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Installation & Maintenance Data Group: WSHP Part Number: 910128846 Date: March 2012 IM 1139 © 2012 McQuay International SmartSourceSingle Stage Horizontal & Vertical Water Source Heat Pumps Model GSH - Horizontal Unit Model GSV - Vertical Unit Sizes 007-070

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Page 1: SmartSource Single Stage Horizontal & Vertical Water ...salesportal.daikinapplied.com/bizlit/DocumentStorage/WaterSource... · Single Stage Horizontal & Vertical Water Source Heat

Installation & Maintenance Data

Group: WSHP

Part Number: 910128846

Date: March 2012

IM 1139

© 2012 McQuay International

SmartSource™ Single Stage Horizontal & Vertical Water Source Heat Pumps

Model GSH - Horizontal Unit Model GSV - Vertical Unit Sizes 007-070

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Contents

Nomenclature.......................................................................3General Information ............................................................5

Safety, Receiving and Storage .........................................5Installation Considerations................................................5

Physical Data .......................................................................6Vertical Units ....................................................................6Horizontal Units ...............................................................7

Installation – GSH Horizontal Unit .....................................8Service Clearances...........................................................8Procedure .........................................................................8Installation Considerations................................................9Filter Access .....................................................................9Discharge Air Conversion .................................................9Ductwork & Attenuation ..................................................11Discharge Duct Dimensions ...........................................12Return Air Filter Rack Assembly & Duct Collar Connections ....................................................................13Ventilation Air ..................................................................13

Installation – GSV Vertical Unit ........................................14Service Clearances.........................................................14Procedure .......................................................................14Ductwork and Attenuation ...............................................15Discharge Duct Collar Dimensions .................................15General ...........................................................................15Piping & Electrical Connections Locations .....................17Return Air Filter Rack Assembly & Duct Collar Connections ....................................................................17

System Applications .........................................................18Water Loop Application ...................................................18Ground-Loop Application ................................................19Ground-Water Application ...............................................21Water System Quality .....................................................23Supply & Return Piping...................................................24Condensate Drain Connection........................................25Cleaning & Flushing System...........................................26

Controls ..............................................................................27MicroTech® III SmartSource Unit Controller ...................29

Unit Protections & LED Fault Status Annunciation ........29

MicroTech SmartSource Controller with LonWorks® Communication Module ....................................................31

MicroTech SmartSource Controller with BACnet Communication Module ..................................................31Rotary Fan Speed Selection Switch ...............................33Constant Torque Motor ...................................................33Constant CFM Type ECM Motor Fan Settings ...............34Information for Initial Start-up .........................................35Check, Test & Start Procedure .......................................35

Start-up ...............................................................................35Operating Limits ................................................................36

Environment....................................................................36

Factory-Installed Option ...................................................36Motorized Isolation Valve & Relay ..................................36

Typical Wiring Diagrams ...................................................37MicroTech III Unit Control with BACnet Communication Module (HGRH) - 265-277V, 1-Phase ............................37MicroTech III Unit Control with BACnet Communication Module (HGRH)- 265-277V, 1-Phase, Service & Disconnect ......................................................................38MicroTech III Unit Control with BACnet Communication Module (WSE & DSH) - 208-230V, 1-Phase with 115V Loop Pumps and 20kW Electric Heat ......................................39MicroTech III Unit Control with BACnet Communication Module (WSE & DSH) Service & Disconnect - 208-230V, 1-Phase with 115V Loop Pumps and 20kW Electric Heat 40MicroTech III Unit Control with LonWorks Communication Module - 208-230V, 3-Phase with 230V Loop Pumps and 5kW Electric Heat ...........................................................41MicroTech III Unit Control with LonWorks Communication Module Service & Disconnect 208-230V, 3-Phase with 230V Loop Pumps and 5kW Electric Heat......................42MicroTech III Unit Control with BACnet Communication Module (WSE) - 460V, 3-Phase with 230V Loop Pumps and 20kW Electric Heat ..................................................43MicroTech III Unit Control with BACnet Communication Module (WSE) Service & Disconnect - 460V, 3-Phase with 230V Loop Pumps and 20kW Electric Heat .........................................................44

Maintenance .......................................................................45General Maintenance ........................................................45

The in and outs of R-410A ..............................................45Lubrication ......................................................................45Charging .........................................................................45

Troubleshooting ................................................................46Cooling Refrigeration Cycle ............................................46Heating Refrigeration Cycle ............................................47

Water Source Heat Pump Equipment Check, Test and Start Form ..........................................................................48

Unit Check / Equipment Data .........................................49Commercial Check, Test and Start Worksheet ...............50

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NomenclatureNote: Text displayed in Bold-Italics designate standard offering.

Category Code Item Code Option Code Designation & Description (Bold-Italic = Standard)Product Category 1 1 W = Water Source Heat PumpModel Type 2 2-3 GS = HighEfficiencySingleStageConfiguration 3 4 H = Horizontal V = VerticalNominal Capacity 4 5-7 007 = 7,000 Btuh Nominal Cooling 009 = 9,000 Btuh Nominal Cooling 012 = 12,000 Btuh Nominal Cooling 015 = 15,000 Btuh Nominal Cooling 019 = 19,000 Btuh Nominal Cooling 024 = 24,000 Btuh Nominal Cooling 030 = 30,000 Btuh Nominal Cooling 036 = 36,000 Btuh Nominal Cooling 042 = 42,000 Btuh Nominal Cooling 048 = 48,000 Btuh Nominal Cooling 060 = 60,000 Btuh Nominal Cooling 070 = 70,000 Btuh Nominal Cooling Unit Control 5 8 B = MicroTech III Unit ControllerDesign Series (Vintage) 6 9 1 = Revision / Design Series 1Voltage 7 10 A = 115/60/1 E = 208-230/60/1 F = 208-230/60/3 J = 277-265/60/1 K = 460/60/3Range for Entering Water/Glycol Temp. 8 11-12 GW = Ground Water WL = Water Loop GL = Ground LoopReturn Air Location 9 13 L = Left-Hand Return Air & Right-Hand Piping R = Right-Hand Return Air & Right-Hand PipingDischarge Air Location 10 14 E = End (Horizontal Unit Only) T = Top(VerticalUnitOnly) S = Straight(HorizontalUnitOnly)Fan Motor 11 15 4 = ECM Constant CFM 5 = ECM Constant TorqueDehumidification Option 12 16 B = HotGasReheatSmartDehumidification C = SimplifiedDehumidification(LowerCFMnoHGRHor no Humidistat) D = HumidistatControlledDehumidification(NoHGRH) E = Humidistat Only Y = NoneSound Package 13 17 Y = None A = PremiumCoaxial Heat Exchanger Construction 15 19 C = Copper Inner Tube - Steel Outer Tube(Supply Liquid / Refrigerant) S = Cupronickel Inner Tube - Steel Outer TubePrimary Air Coil Option 16 20 S = Standard E = E-CoatedCommunication Module 19 24 B = BACnet L = LonWorks

Y = NoneFilter Rack 20 25 2 = 4-Sided, 2" w/Duct Collar & Door 3 = 4-Sided, 2" w/Duct Collar, Door, Hi-Merv Seal 4 = 4-Sided, 4" w/Duct Collar, Door, Hi-Merv Seal Y = NoneFilter Type 21 26 A = Disposable E = Merv 8 Factory-Installed G = Merv 13 (4-inch thick) Factory-Installed Y = NoneWater Coil - Indoor Air 22 27 E = Waterside Economizer Y = NoneElectric Heating - Indoor Air 23 28 C = 5.0 kW Internal Electric Heater E = 10.0 kW Internal Electric Heater F = 15.0 kW Internal Two Stage Electric Heater G = 20.0 kW Internal Two Stage Electric Heater P = Control for Electric Heat, Single 24V Signal (Field-installed Duct Heater by others) Y = None

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Model NomenclatureCategory Code Item Code Option Code Designation & Description (Bold-Italic = Standard)Control Secondary Heat Type 24 29 B = Boilerlerss Electric Heat E = Emergency Electric Heat P = Primary Electric Heat (No Heat Pump Heating) S = Supplemental Heat Y = NoneDesuperheater (Hot Water Generator) 25 30 D = Desuperheater Y = NoneLoop Pump 26 31-32 1S = One Low Head 230 Volt Pump, Grundfos UP26-99F 1L = One High Head 230 Volt Pump, Grundfos UP26-116F 2S = Two Low Head 230 Volt Pumps, Grundfos UP26-99F 2L = Two High Head 230 Volt Pumps, Grundfos UP26-116F 3S = One Low Head 115 Volt Pump, Grundfos UP26-99F 4S = Two Low Head 115 Volt Pumps, Grundfos UP26-99F YY = NoneCoaxial Coil Supply Liquid 27 33 B = 2-Way, Motorized - 24v Valve Control, NOFlow Control Y = NoneCoaxial Coil Supply Liquid 28 34 G = Auto Flow Control 5.0 GPMFlow Control H = Auto Flow Control 6.0 GPM I = Auto Flow Control 8.0 GPM J = Auto Flow Control 9.0 GPM K = Auto Flow Control 10.0 GPM L = Auto Flow Control 11.0 GPM M = Auto Flow Control 12.0 GPM N = Auto Flow Control 13.0 GPM P = Auto Flow Control 15.0 GPM S = Auto Flow Control 18.0 GPM Y = NoneDesuperheater Water Flow Options 31 37 Q = Pump - 208-230/60/1 Voltage Y = NoneWater Coil Piping Package Options 35 41 A = 3-Way Motorized - 24V Valve Control, NO to Coax(Hot Water or Waterside EconomizerPrimary Drain Pan Material 39 45 S - Stainless SteelCompressor Insulation 41 47 B = Compressor Insulation Sound Blanket Y = NoneCompressor Isolation 42 48 B = Isolated baseInsulation - 43 49 A = 1/2" Fiberglass Skin-FacedCompressor Compartment B = 1/2" Fiberglass - Foil Faced C = 3/8" Closed Cell FoamInsulation - Air Side 44 50 A = 1/2" Fiberglass Skin-Faced B = 1/2" Fiberglass - Foil-Faced C = 3/8" Closed Cell FoamInsulation - Piping 45 51 A = Insulated Piping Y = NoneCabinet Finish 47 53 A = Powder Coat Y = NoneCabinet Color 48 54 Y = None W = Off White T = Textured Charcoal BronzeFan Motor Control 50 56 C = Various Speeds with 4 Adjustment SettingsDisconnect Switch 53 60 Y = None N = Non-FusedControl Transformer 55 62 1 = 50VA Control Transformer 2 = 75VA Control TransformerThermostat/Sensor Control 56 63 T = Thermostat Control S = Sensor ControlExpansion Device 75 82 A = Thermal Expansion Valve Thermal Bulb and Equalizer TubeAlarm Relay 76 83 A = Alarm Relay (Dry Contacts) Y = NoneExtended Warranty, Parts Only 91 105-106 YY = None 1E = 1-Year, Entire Unit Parts Only 2C = 2-Year Parts (Compressor Only) 2R = 2-Year Parts (Refrigerant Circuit) 3C = 3-Year Parts (Compressor Only) 3R = 3-Year Parts (Refrigerant Circuit) 4C = 4-Year Parts (Compressor Only) 4R = 4-Year Parts (Refrigerant Circuit)

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General Information

Safety, Receiving and Storage

CAUTION Sharp edges can cause personal injury. Avoid contact with them.

Upon receipt of the equipment, check carton for visible damage. Make a notation on the shipper’s delivery ticket before signing. If there is any evidence of rough handling, immediately open the cartons to check for concealed damage. If any damage is found, notify the carrier within 48 hours to establish your claim and request their inspection and a report. The Warranty Claims Department should then be contacted.Do not stand or transport the machines on end. For storing, each carton is marked with “up” arrows.In the event that elevator transfer makes up-ended positioning unavoidable, do not operate the machine until it has been in the normal upright position for at least 24 hours.Temporary storage at the job site must be indoor, completely sheltered from rain, snow, etc. High or low temperatures natu-rally associated with weather patterns will not harm the units. Excessively high temperatures, 140°F (60°C) and higher, may deteriorate certain plastic materials and cause permanent damage.

IMPORTANT This product was carefully packed and thoroughly inspected

before leaving the factory. Responsibility for its safe delivery was assumed by the carrier upon acceptance of the shipment. Claims for loss or damage sustained in transit must therefore be made upon the carrier as follows:

VISIBLE LOSS OR DAMAGE

Any external evidence of loss or damage must be noted on the freight bill or carrier’s receipt, and signed by the carrier’s agent. Failure to adequately describe such external evidence of loss or damage may result in the carrier’s refusal to honor a damage claim.Theformrequiredtofilesuchaclaimwillbesuppliedbythe carrier.

CONCEALED LOSS OR DAMAGE

Concealed loss or damage means loss or damage which does not become apparent until the product has been unpacked. The contents may be damaged in transit due to rough handling even though the carton may not show external damages. When the damage is discovered upon unpacking, make a written request for inspectionbythecarrier’sagentwithinfifteen(15)daysofthedeliverydateandfileaclaimwiththecarrier.

Installation Considerations

WARNING The installer must determine and follow all applicable codes and

regulations. This equipment presents hazards of electricity, ro-tating parts, sharp edges, heat and weight. Failure to read and follow these instructions can result in property damage, severe personal injury or death. This equipment must be installed by experienced, trained personnel only.

1. To prevent damage, do not operate this equipment for supplementary heating and cooling during the construction period.

2. Inspectthecartonforanyspecifictaggingnumbersindicated by the factory per a request from the installing contractor.

Note: 1. Check the unit data plate for correct voltage, phase and capacity with the plans before installing the equipment. Also, make sure all electrical ground connections are made in accordance with local code. 2. ECM motors on 460/60/3 volt units require a 265 volt power supply. Both a hot AND a neutral wire are required to obtain proper fan motor voltage. Therefore, 4-wires with a wye type wiring arrangement is required.

3. Check the unit size against the plans to verify that the unit is being installed in the correct location.

4. Before installation, check the available ceiling height versus the height of the unit.

5. Note the location and routing of water piping, condensate drain piping, and electrical wiring. The locations of these items are clearly marked on submittal drawings.

6. Theinstallingcontractorwillfinditbeneficialtoconferwith piping, sheet metal, and electrical foremen before installing any unit.

7. The contractor shall cover the units to protect the machinesduringfinishingofthebuilding.Thisiscriticalwhilesprayingfireproofingmaterialonbarjoists,sandblasting,spraypaintingandplastering.Ifplasticfilmisnotavailable,theshippingcartonmaybemodifiedtocover the units during construction.

8. Remove the Styrofoam shipping block under the fan housing on horizontal units before start-up.

Figure 1: Horizontal unit foam shipping block

Remove foam shipping block

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Physical Data

Vertical Units Table 1: Unit sizes 007 through 030

DescriptionUnit Sizes 007 through 030

007 009 012 015 019 024 030

Compressor Type Rotary Rotary Rotary Rotary Rotary Scroll Scroll

Refrigeration Charge (Oz.) 26 26 29 42 42 56 54

Fan Wheel (D x W) 6" x 8" 6" x 8" 6" x 8" 9" x 7" 9" x 7" 9" x 7" 9" x 7"

Fan Motor HP 1/10 1/10 1/10 1/3 1/3 1/3 1/2

Water Connection Size (FPT) 1/2" 1/2" 1/2" 3/4" 3/4" 3/4" 3/4"

Desuperheater Connection Size (FPT)

1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2"

Coax & Water Piping Volume (Gal. @ 70ºF)

0.2 0.2 0.2 0.5 0.5 0.5 0.5

Condensate Connection Size (FPT) 3/4 3/4 3/4 3/4 3/4 3/4 3/4

Air Coil Face Area (Sq Ft.) 2.1 2.1 2.1 2.5 2.5 4.1 4.1

Air Coil Dimensions (W x H) 18" x 17" 18" x 17" 18" x 17" 18" x 20" 18" x 20" 28" x 20.5" 28" x 20.5"

Air Coil Rows 3 3 3 3 3 3 3

Air Coil Tube Size 3/8" 3/8" 3/8" 3/8" 3/8" 3/8" 3/8"

Filter Size 17.5" x 20.0" 17.5" x 20.0" 17.5" x 20.0" 18.0" x 20.0" 18.0" x 20.0" 27.8" x 22.1" 27.8" x 22.1"

Operating Weight 148 151 151 201 202 231 233

Shipping Weight 170 173 173 220 221 265 267

Table 2: Unit sizes 036 through 070

DescriptionUnit Sizes 036 through 070

036 042 048 060 070

Compressor Type Scroll Scroll Scroll Scroll Scroll

Refrigeration Charge (Oz.) 72 90 88 120 122

Fan Wheel (D x W) 11" x 10" 11" x 10" 11" x 10" 11" x 10" 11" x 10"

Fan Motor HP 1/2 3/4 3/4 1 1

Water Connection Size (FPT) 3/4" 1" 1" 1" 1"

Desuperheater Connection Size (FPT) 1/2" 1/2" 1/2" 1/2" 1/2"

Coax & Water Piping Volume (Gal. @ 70ºF) 0.5 0.5 1.1 2.1 2.1

Condensate Connection Size (FPT) 3/4 3/4 3/4 3/4 3/4

Air Coil Face Area (Sq Ft.) 4.9 5.6 5.6 6.4 6.4

Air Coil Dimensions (W x H) 26" x 27" 30" x 27" 30" x 27" 34" x 27" 34" x 27"

Air Coil Rows 3 3 3 3 3

Air Coil Tube Size 3/8" 3/8" 3/8" 3/8" 3/8"

Filter Size 28.9" x 25.9" 28.9" x 29.9" 28.9" x 29.9" 33.9" x 29.9" 33.9" x 29.9"

Operating Weight 313 350 352 470 477

Shipping Weight 344 382 384 496 503

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Physical DataHorizontal Units Table 3: Unit sizes 007 through 030

DescriptionUnit Sizes 007 through 030

007 009 012 015 019 024 030

Compressor Type Rotary Rotary Rotary Rotary Rotary Scroll Scroll

Refrigeration Charge (Oz.) 26 26 29 42 42 56 54

Fan Wheel (D x W) 6" x 8" 6" x 8" 6" x 8" 9" x 7" 9" x 7" 9" x 7" 9" x 7"

Fan Motor HP 1/10 1/10 1/10 1/3 1/3 1/3 1/2

Water Connection Size (FPT) 1/2" 1/2" 1/2" 3/4" 3/4" 3/4" 3/4"

Desuperheater Connection Size (FPT) 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2"

Coax & Water Piping Volume (Gal. @ 70ºF)

0.2 0.2 0.2 0.5 0.5 0.5 0.5

Condensate Connection Size (FPT) 3/4 3/4 3/4 3/4 3/4 3/4 3/4

Air Coil Face Area (Sq Ft.) 2.1 2.1 2.1 2.5 2.5 4.1 4.1

Air Coil Dimensions (W x H) 16" x 17" 16" x 17" 16" x 17" 18" x 20" 18" x 20" 18" x 32.5" 18" x 32.5"

Air Coil Rows 3 3 3 3 3 3 3

Air Coil Tube Size 3/8" 3/8" 3/8" 3/8" 3/8" 3/8" 3/8"

Filter Size 15.5" x 20.0" 15.5" x 20.0" 15.5" x 20.0" 18.0" x 20.0" 18.0" x 20.0" 16.75" x 34" 16.75" x 34"

Operating Weight 148 151 154 200 214 254 256

Shipping Weight 165 168 171 214 228 289 291

Table 4: Unit sizes 036 through 070

DescriptionUnit Sizes 036 through 070

036 042 048 060 070

Compressor Type Scroll Scroll Scroll Scroll Scroll

Refrigeration Charge (Oz.) 72 90 88 120 122

Fan Wheel (D x W) 11" x 10" 11" x 10" 11" x 10" 11" x 10" 11" x 10"

Fan Motor HP 1/2 3/4 3/4 1 1

Water Connection Size (FPT) 3/4" 1" 1" 1" 1"

Desuperheater Connection Size (FPT) 1/2" 1/2" 1/2" 1/2" 1/2"

Coax & Water Piping Volume (Gal. @ 70ºF) 1.1 1.2 1.2 2.1 2.1

Condensate Connection Size (FPT) 3/4 3/4 3/4 3/4 3/4

Air Coil Face Area (Sq Ft.) 5.0 5.6 5.6 6.4 6.4

Air Coil Dimensions (W x H) 26" x 27" 30" x 27" 30" x 27" 34" x 27" 34" x 27"

Air Coil Rows 3 3 3 3 3

Air Coil Tube Size 3/8" 3/8" 3/8" 3/8" 3/8"

Filter Size 18.75" x 37.25" 18.75" x 42.62" 18.75" x 42.62" 18.75" x 48" 18.75" x 48"

Operating Weight 329 365 367 472 478

Shipping Weight 361 408 410 514 521

Table 5:Horizontalunitcornerweights,percentageoftotaloperatingweight(Baseunitonly)

Unit Size

Total Operating

Weight (lbs.)

Corner Weight % of Total Operating Weight

A B C D

007 148

30% 20% 20% 30%

009 151

012 154

015 200

019 214

024 254

030 256

036 329

042 365

048 367

060 472

070 478

Con

trol B

ox

Compressor

Water Connections

AB

C D

Uni

t Fro

nt

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Installation – GSH Horizontal UnitService ClearancesFigure 2: Recommended minimum & optimum unit clearances

Procedure1. Locate the unit in an area that allows for easy removal

ofthefilterandaccesspanels.Leavetherecommendedamount of clearance around the heat pump for easy removal, and to perform routine maintenance, or troubleshooting, refer to Figure 2.Providesufficientroomto make water, electrical and duct connections.

2. The contractor should make sure that adequate ceiling panel access exists, including clearance for hanger brackets,ductcollarsandfittingsatwaterandelectricalconnections.

3. Allow adequate room below the unit for a condensate trap and do not locate the unit above pipes.

4. Each unit is suspended from the ceiling by four threaded rods. The rods are attached to the unit corners by a hanger bracket through a rubber isolator.

CAUTION Do not use rods smaller than shown in Figure 6 on page 9.

The rods must be securely anchored to the ceiling or to the bar joists.

5. Each unit is furnished with a hanger kit. The kit is shipped un-assembled and includes hanger brackets, rubber isolators, washers, bolts and lock washers. Lay out the threaded rods per the dimensions in Figure 5 on page 9.

6. When attaching the hanger rods to the unit, a double nut is recommended since vibration could loosen a single nut. The installer is responsible for providing the hex nuts when installing hanger rods. Refer to Figure 6 on page 9.

7. Leave minimum 3" (76 mm) extra threaded rod below the double nuts or minimum 3" (76 mm) clearance between top of unit and ceiling above to facilitate top panel removal for servicing.

Figure 3:Typicalhorizontalunitinstallation

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Installation – GSH Horizontal UnitInstallation ConsiderationsFilter AccessEachunitisshippedwithafilterbracketforsidefilterre-moval.Foroppositesidefilterremovalthefilterrackassem-blymaybeturned180degrees.Also,asheetmetalductfilterretainer can be fabricated when return air duct work is used. Figure 4: Filter rack filter door removal

Filter rackFilter access door

Threaded access door knobs

Figure 5: Hanger bracket locations - sizes 026-072

W

YX

Table 6: Hanger bracket location dimensionsUnit Size W X Y

007, 009, 012 44.67 (1135) 23.60 (599) 19.10 (485)

015, 019 50.06 (1272) 24.40 (620) 19.90 (505)

024, 030 62.16 (1579) 23.90 (607) 18.64 (474)

036 72.16" (1833) 27" (686) 21.24" (539)

042, 048 77.57" (1970) 27" (686) 21.24" (539)

060, 070 82.97" (2107) 27" (686) 21.24" (539)

Note: All dimensions within ± 0.10 inches (2.5 mm).

Figure 6: Hanger bracket details (sizes 007-019)

3/8" Threaded Rod (By Others)

Vibration IsolatorWasher

Hex Nuts (Double) (By Others)

Bolt & Lock Washer

Figure 7:Heavy-dutyhangerbrackets(sizes024-070)

Bolt & Lock Washer

Vibration Isolator

Hex Nuts (Double) (By Others)

3/8" Threaded Rod (By Others)

Heavy-Duty Bracket

Horizontal unit sizes 024 through 070 are provided with heavy-duty hanger brackets, fastening bolts, vibration isola-tors and washers. Do not subsitute these brackets for others, for unit sizes 024 through 070. 3/8" threaded rods and hex nuts (doubled) are provided by others.

Discharge Air ConversionA straight discharge unit may be converted to an end dis-charge by doing the following:Note: The information covered in this section of the blower

assembly orientation is typical of Daikin McQuay units. Regardless, if you are changing end to straight or straight to end the blower assembly has to turn 90 degrees and simultaneously rotate 180 degrees to achieve the proper orientation. Not all Daikin McQuay units will have the same air discharge location but will have the same general results when following the instructions.

DANGERHazardous Voltage!

Disconnect all electric power including remote dis-connects before servicing. Failure to disconnect power before servicing can cause severe personal injury or death.

CAUTION Sharp edges can cause personal injury. Avoid contact with

them.

1. Turn off power to the unit at the breaker box.2. Remove the top panel by removing the screws around

the perimeter of the top securing it to the lower cabinet (Figure 8).

Note: Retain all screws for reinstalling.3. Remove the access panel to the fan motor by loosening

the two (2) screws at the bottom holding the panel (Figure 8). Remove the piece of insulation at the bottom on the side of the bottom panel.

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Installation – GSH Horizontal UnitFigure 8: Remove top and access panel to fan motor

Remove screws around the perimeter of top

Remove two (2) screws at bottom of access panel to access fan motor

Remove Top

Remove Access Panel to Fan Assembly

Fan Discharge Panel Assembly (Bottom-Horizontal Orientation)

4. Remove the screws securing the fan discharge panel assembly (Figure 8). 5. Lift the fan assembly out rotating it 180 degrees and position it within the opening at the end of the unit (Figure 9). With

the fan motor in the end discharge position the fan and housing orientation is top-horizontal. In a straight air discharge arrangement the housing is in the bottom-horizontal orientation.

6. Secure the fan assembly to the unit frame with the screws removed previously.7. Reinstall the access panel in the fan motor access opening (Figure 10).8. Reinstall the top panel and secure with screws removed previously.Note: If installed correctly the fan motor should be accessible when the fan motor access panel is removed.

Figure 9:Liftoutthefanassembly,turn90degreesandrotate180degrees

Remove screws securing the fan assembly to the cabinet. Note bottom-horizontal orientation of fan assembly

Position the fan assembly in the end opening with the fan in the “top-horizontal” orientation

Rotate the Fan Assembly 180 degrees

Straight Discharge Arrangement(Bottom-Horizontal) Orientation

End Discharge Arrangement(Top-Horizontal) Orientation

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Installation – GSH Horizontal Unit

Figure 10: Reinstall the top and access panel

Reinstall Access Panel to Fan Motor

Reinstall Top

Ductwork & AttenuationDischarge ductwork is normally used with these conditioners. Return air ductwork may also be required.All ductwork should conform to industry standards of good practice as described in the ASHRAE Systems Guide.The discharge duct system will normally consist of:• aflexibleconnectorattheunit• a10ft.lengthofinsultedduct• andatrunkductteeingintoabranchductwithdischarge

diffusers as shown in Figure 11.

With metal duct material, the entire branch duct should be internallylinedwithacousticfibrousinsulationforsoundattenuation.Glassfiberductboardmaterialismoreabsorbingandmaypermitomissionoftheflexiblebootconnector.Asageneralrecommendation,theacousticfibrousinsula-tion should be at least 1/2 inch thick over the entire duct run (Figure 11).Forbettersoundattenuation,linethelastfivediameters of duct before each register with a one-inch thick sound blanket. Elbows, tees and dampers can create turbu-lenceordistortionintheairflow.Placeastraightlengthofduct,5to10timestheductwidth,beforethenextfittingtosmoothoutairflow.Diffusersthatarelocatedinthebottomof a trunk duct can also produce noise. For this same rea-son, volume control dampers should be located several duct widths upstream from an air outlet.For Hotel, Motel, Dormitory or Nursing Home applications that use a single duct discharge, a velocity of 500 to 600 fpm is suggested. These applications typically have static pressures as low as 0.05 inches of water and duct lengths approximately six feet in length. The discharge duct must be fully lined and have a square elbow without turning vanes. Return air for these applications should enter through a “low” sidewallfiltergrilleandrouteupthestudspacetoaceilingplenum. For horizontal heat pumps mounted from the ceiling, an insulated return plenum is sometimes placed at the return air opening to further attenuate line-of-sight sound transmis-sion through return openings.

Figure 11:Typicalductingofhorizontalunit

Flexible (Boot) Connector

Acoustically Insulated Duct (approximately 10')

Trunk Duct

Trunk Duct Tee

Branch Duct

Acoustically Insulated Return Air Duct

Room Air Supply Diffuser

Room Air Supply Diffuser

Branch Duct

Room Air Supply Diffuser

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Installation – GSH Horizontal UnitDischarge Duct DimensionsFigure 12: GSH discharge duct collar locations

Left Return - End Discharge Right Return - End Discharge

FrontFront

Right Return - Straight Discharge View

NN

M M

OO

OO

P P

PP

RRQQ

Left Return - Straight Discharge View

FM AP

FM AP

FM AP

G G

Legend: FM AP = Fan Motor Access Panel

Table 7: GSH discharge duct collar dimensions

GSH Horizontal

Unit

Discharge Air Duct Connection in inches (mm)

MN

O P QR

Left-hand Right-hand Left-hand Right-hand

007, 009, 012 6.18 (157) 8.23 (209) 4.10 (104) 4.89 (124) 9.45 (240) 6.12 (156) 4.10 (104) 8.23 (209)

015, 019 4.64 (118) 5.75 (146) 3.15 (80) 10.46 (266) 9.33 (237) 4.63 (118) 3.15 (80) 5.75 (146)

024, 030 4.41 (112) 6.20 (157) 2.71 (69) 10.39 (264) 9.32 (237) 4.41 (112) 2.71 (69) 6.20 (157)

036 4.88 (124) 4.74 (120) 2.81 (71) 13.75 (349) 13.25 (337) 4.88 (124) 2.81 (71) 4.74 (120)

042, 048 4.88 (124) 4.74 (120) 2.81 (71) 13.75 (349) 13.25 (337) 4.88 (124) 2.81 (71) 4.74 (120)

060, 070 4.88 (124) 4.74 (120) 2.81 (71) 13.75 (349) 13.25 (337) 4.88 (124) 2.81 (71) 4.74 (120)

Note: All duct dimensions are referenced from the outside edge of the flange.

Table 8: GSH piping & electrical connections dimensions

GSH Horizontal

Unit

Piping Connections in inches (mm) Electrical Connections in inches (mm)

D EF

GH

J K L

Supply ReturnCondensate Drain

3/4" FPTLow Voltage4 Between Line Voltage5

007, 009, 0121 2.65 (67) 5.65 (144) 1.47 (37) 3.76 (96) 1.98 (50) 2.08” (53) 7.06 (179) 9.14 (232)

015, 0192 2.95 (75) 5.95 (151) 1.47 (37) 4.07 (103) 1.98 (50) 2.08 (53) 7.06 (179) 9.14 (232)

024, 0302 2.58 (66) 13.39 (340) 1.57 (40) 4.29 (109) 1.94 (49) 2.57 (65) 7.36 (187) 9.93 (252)

0362 2.76 (70) 13.57 (345) 1.57 (40) 4.36 (111) 1.94 (49) 3.57 (91) 8.23 (209) 11.81 (300)

042, 0483 3.07 (78) 13.88 (353) 1.57 (40) 4.36 (111) 1.94 (49) 3.57 (91) 8.23 (209) 11.81 (300)

060, 0703 3.07 (78) 13.88 (353) 1.57 (40) 4.36 (111) 1.94 (49) 3.57 (91) 8.23 (209) 11.81 (300)

Notes: 1 Supply and return piping connections = 1/2" (13 mm) FPT. 2 Supply and return piping connections = 3/4" (19 mm) FPT. 3 Supply and return piping connections = 1" (25.4 mm) FPT. 4 Low voltage opening = 7/8" (22 mm) diameter. 5 Line voltage opening = 1-1/8" (29 mm) diameter.

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Figure 13: GSH piping & electrical connections locations

J

KL

Front View

DE

C AP

Low Voltage (Note 3, page 12)

Line Voltage (Note 4, page 12 )

H F

(Note 1, page 12)

Legend: C AP = Control Access Panel

Figure 14: Unit with optional disconnect switchLine voltage hole in disconnect switch

Disconnect switch

Return Air Filter Rack Assembly & Duct Collar ConnectionsReturnairductworkcanbeconnectedtothestandardfilterrack, see Figure 15. The unit comes standard with a 2" (51mm)thickfactory-installedthrowawayfilter,mountedina4-sidedcombinationfilterrackandreturnairductcollar.Fil-ters can be easily removed from either side by interchanging theremovablefilterdoortotherightorleftsideandrotatingthefilterrackassembly180degrees.Donotusesheetmetalscrews directly into the unit cabinet for connection of supply or return air ductwork, especially return air ductwork which can hit the drain pan or the air coil.

Ventilation AirVentilation may require outside air. The temperature of the ventilation air must be controlled so that mixture of outside air and return air entering the conditioner does not exceed conditioner application limits. It is also typical to close off the ventilation air system during unoccupied periods (night setback).The ventilation air system is generally a separate building subsystem with distribution ductwork. Simple introduction of the outside air into each return air plenum chamber reason-ably close to the conditioner air inlet is recommended. Do not duct outside air directly to the conditioner inlet. Provide sufficientdistanceforthoroughmixingofoutsideandreturnair. See "Operating Limits" on page 36.

Figure 15: GSH return air duct collar location

ZW2.125" (54 mm)

.839" (21.3 mm)

.839" (21.3 mm)

.839" (21.3 mm)

.839" (21.3 mm)

ZH

* 2.10" (53 mm) See Note

.839" (21.3 mm)

Table 9: GSH return air duct collar dimensionsUnit Size ZW ZH

007, 009, 012 21.17 (538) 15.56 (395)

015, 019 24.07 (611) 18.14 (461)

024, 030 17.13 (435) 34.35 (872)

036 19.13" (486) 37.6" (955)

042, 048 19.13" (486) 42.00 (1067)

060, 070 19.13" (486) 48.40 (1229)

Note: * Optional 4" filter rack = 4.10" (104 mm).

Installation – GSH Horizontal Unit

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Figure 17:Verticalunit-typicalinstallationinsmallmechanical room or closet

Installation – GSV Vertical UnitService ClearancesFigure 16: Recommended clearances for service access

Procedure1. Locate the unit in an area that allows for easy removal

ofthefilterandaccesspanels,andhasenoughspacefor service personnel to perform maintenance or repair. Providesufficientroomtomakewater,electricalandductconnections.

2. Makesurethatsufficientaccesshasbeenprovidedforinstalling and removing the unit, including clearance forductcollarsandfittingsatwaterandelectricalconnections.

3. Allow adequate room around the unit for a condensate piping.

4. The unit can be installed “free standing” in an equipment room. However, closet installations are more common for small vertical type units. Generally, the unit is located in the corner of a closet with the non-ducted return air facing 90 degrees to the door and the major access panels facing the door as in Figure 17. Alternatively, the unit can have a ducted return air with the opening facing the door and the major access panels facing 90 degrees to the door.

5. Unit must be located on top of a vibration absorbing material such as a rubber (isolation pad) that is the same size as the base of the unit, to minimize vibration and noise (Figure 17).

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1 - Supply Air Ducting2 - Acoustical Thermal Lining (10 ft.)3 - Line Voltage - 7/8" (22 mm) Hole4 - Low Voltage - 7/8" (22 mm) Hole5 - Flexible Duct Collar6 - Louvered Door for Return Air7 - Condensate Drain Connection8 - Flexible Return Hose with Flow Controller/Ball Valve

(3/4" FPT)9 - Flexible Supply Hose with Y-Strainer/Ball Valve (3/4" FPT)10 - Access Panel to Controller11 - LED Annunciator Status Lights12 - Vibration Isolation Pad

Ductwork and AttenuationDischarge ductwork is normally used with these units. Where return air ductwork is required, the unit comes standard witha2"(51mm)thick,factory-installedthrowawayfilter,mountedina4-sidedcombinationfilterrackandreturnairduct collar. Filters can be easily removed from either side by interchangingtheremovablefilterdoortotherightorleftsideandrotatingthefilterrackassembly180degrees.A2"or4"filterrackisavailableasafactory-installedselectableoptiontoacceptaMerv8orMerv13filter.All ductwork should conform to industry standards of good practice as described in ASHRAE Systems Guide. Afieldsupplieddischargeductsystemwillnormallyconsistof:• Aflexibleconnectorattheunit• A90degreeelbowwithoutvanes• A10ftlengthofinsulatedduct• Atrunkductteeingintoabranchcircuitwithdischarge

diffusers.

Discharge Duct Collar DimensionsFigure 18: GSV discharge duct collar locations

M

N

O

O

PP

Q

Top View - Right ReturnTop View - Left Return

Front

N

General1. Verify the compatibility between the voltage and phase

of the available power and that shown on the unit serial plate. Line and low voltage wiring must comply with local codes or the National Electrical Code, whichever applies.

2. Applycorrectlinevoltagetotheunit.A7⁄8"(22mm)holeand/ora1-1⁄8"(29mm)knockoutissuppliedonthesideof the unit. A disconnect switch near the unit is required by code. Power to the unit must be sized correctly and have dual element (Class RK5) fuses or an HACR circuit breaker for branch circuit overcurrent protection. See the nameplate for correct ratings.

3. Three phase 60 cycle units, 460/60-3, require a neutral wire for power to the fan circuit.

4. Connect the thermostat/subbase wiring with the power “off ” to the unit.

5. Field supplied relays installed on the input terminals W1, W2, Y1, Y2 or G may introduce electrical noise. Never install relay coils in series with the inputs.

230 Volt OperationAll 208-230 volt single-phase and three-phase units are facto-ry wired for 208 volt operation. For 230 phase operation, the line voltage tap on the 24 volt transformer must be changed. Disconnect and cap the red lead wire and interchange it with the orange lead wire on the primary of the 24 volt transformer (sizes 026-072).Table 10: GSV discharge duct collar dimensions

GSV Vertical

Unit

Discharge Duct Collar Connection in inches (mm)

M N O P Q

007, 009, 012 10.63 (270) 6.64 (169) 4.89 (124) 9.37 (238) 10.68 (271)

015, 019 5.75 (146) 8.16 (207) 10.45 (265) 9.33 (237) 10.43 (265)

024, 030 5.75 (146) 8.37 (213) 10.39 (264) 9.32 (237) 10.55 (268)

036 6.44 (164) 9.63 (245) 13.75 (349) 13.25 (337) 9.63 (245)

042, 048 6.44 (164) 9.63 (245) 13.75 (349) 13.25 (337) 9.63 (245)

060, 070 6.44 (164) 9.63 (245) 13.75 (349) 13.25 (337) 9.63 (245)

Note: All duct dimensions are referenced from the outside edge of the flange.

Installation – GSV Vertical Unit

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Installation – GSV Vertical UnitFigure 19:Typicalinstallationusingductedreturn

Flexible (Boot) Connector

Isolation Pad

Flexible (Boot) Connector

Duct piece from return air duct collar to boot Discharge Duct

Figure 20:Typicalductingforverticalunit

Flexible (Boot) Connector

Acoustically Insulated Duct (approximately 10')90° elbow

Trunk Duct

Trunk Duct Tee

Branch Duct

Branch Duct

Room Air Supply Diffuser

Room Air Supply Diffuser

Room Air Supply Diffuser

Notes: 1. Transformation to supply duct have maximum slope of 1" in 7". 2. Square elbows with double thickness vanes may be substituted. 3. Do not install ducts so that the air flow is counter to fan rotation. If necessary, turn fan section. 4. Transformations and units must be adequately supported so no weight is on the flexible fan connection.

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Table 11: GSV piping & electrical connections dimensions

GSV Vertical

Unit

Piping Connections in inches (mm) Electrical Connections in inches (mm)

D E F G H J K L

SupplyDesuperheater Water Supply

Desuperheater Water Return

ReturnCondensate

Drain 3/4" FPTLow Voltage4 Between Line Voltage5

007, 009, 0121 2.62 (67) N/A N/A 5.62 (143) 13.14 (334) 2.08 (53) 7.06 (179) 9.14 (232)

015, 0192 2.90 (74) N/A N/A 5.90 (150) 16.08 (408) 2.08 (53) 7.06 (179) 9.14 (232)

024, 0302 2.58 (66) 6.68 (170) 9.68 (246) 13.39 (340) 17.39 (442) 3.07 (78) 8.00 (203) 11.07 (281)

0362 3.26 (83) 7.07 (180) 10.07 (256) 14.07 (357) 17.88 (454) 3.82 (97) 8.25 (210) 12.07 (307)

042, 0483 3.07 (78) 7.07 (180) 10.07 (256) 13.88 (353) 17.88 (454) 3.82 (97) 8.25 (210) 12.07 (307)

060, 0703 3.07 (78) 7.07 (180) 10.07 (256) 13.88 (353) 17.88 (454) 3.82 (97) 8.25 (210) 12.07 (307)

Notes: 1 Supply and return piping connections = 1/2" (13 mm) FPT. 2 Supply and return piping connections = 3/4" (19 mm) FPT. 3 Supply and return piping connections - 1" (25.4 mm) FPT. 4 Low voltage opening = 7/8" (22 mm) diameter. 5 Line voltage opening = 1-1/8" (29 mm) diameter.

Return Air Filter Rack Assembly & Duct Collar ConnectionsFigure 23: GSV return air duct collar locations

VV

WW XX

YY

ZZ

4" (102)2" (51)

Optional 4" Filter Rack2" Filter Rack

Table 12: GSV return air duct collar dimensionsUnit Size V W X Y Z

007, 009, 01215.97 (406)

19.35 (492)

21.87 (555)

17.63 (448)

16.31 (414)

015, 01916.49 (419)

22.25 (565)

24.07 (611)

18.14 (461)

18.74 (476)

024, 03026.48" (673)

20.78" (528)

22.62" (575)

28.15 (715)

19.09 (485)

03624.57" (624)

27.38" (696)

29.22" (742)

26.25 (667)

23.50 (597)

042, 04828.57" (726)

27.38" (696)

29.22" (742)

30.25 (768)

23.50 (597)

060, 07032.57" (827)

27.38" (696)

29.22" (742)

34.25 (870)

23.50 (597)

Installation – GSV Vertical UnitPiping & Electrical Connections LocationsFigure 21: GSV piping & electrical connections locations

DE

FG

H

J

KL

Low Voltage Opening (Note 3)

Line Voltage Opening (Note 4)

Front View

C AP

FM AP

1.5" (38)

1.5" (38)

1.83" (47)

Legend: C AP = Control Access Panel FM AP = Fan Motor Access Panel

Figure 22: Unit with optional disconnect switch

Line voltage hole in disconnect switch

Disconnect switch

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System ApplicationsWater Loop ApplicationCommercial systems typically include a number of units connected to a common piping system. Any unit plumbing maintenance work can introduce air into the piping system; therefore air elimination equipment is a major portion of the mechanical room plumbing. In piping systems expected to utilize water temperatures below 50°F [10°C], 1/2” [13mm] closed cell insulation is required on all piping surfaces to eliminate condensation (extended range units required). Metal to plastic threaded joints should never be used due to their tendency to leak over time. All SmartSource units include flushmountedFPTwaterconnectionsintegraltotheunitcorner post, which do not require a backup wrench.Teflon®tapethreadsealantisrecommendedtominimizein-ternal fouling of the heat exchanger. Do not over tighten con-nections and route piping so as not to interfere with service or maintenance access. Hose kits are available from Daikin McQuayindifferentconfigurationsasshowninFigure 26 for connection between the unit and the piping system. Depend-ing upon selection, hose kits may include shut off valves, P/T plugs for performance measurement, high pressure stainless

steel braided hose, “Y” type strainer with blow down valve, and/or “J” type swivel connection. Balancing valves and an external low pressure drop solenoid valve for use in variable speed pumping systems may also be included in the hose kit.Thepipingsystemshouldbeflushedtoremovedirt,pip-ing chips, and other foreign material prior to operation (see "Cleaning & Flushing System" on page 26.Theflowrateis usually set between 2.25 and 3.5 gpm per ton [2.9 and 4.5 l/m per kW] of cooling capacity. Daikin McQuay recom-mends 3 gpm per ton [3.9 l/m per kW] for most applications of water loop heat pumps. To ensure proper maintenance and servicing,P/Tportsareimperativefortemperatureandflowverification,aswellasperformancechecks.Water loop heat pump (cooling tower/boiler) systems typi-cally utilize a common loop, maintained between 60 - 90°F [16 - 32°C]. The use of a closed circuit evaporative cooling tower with a secondary heat exchanger between the tower and the water loop is recommended. If an open type cooling towerisusedcontinuously,chemicaltreatmentandfilteringwill be necessary.

Figure 24:Typicalwaterloopapplication(horizontalunitwithoptionalunitmountedlooppumps

Low Voltage Thermostat Wiring

Power Disconnect

Building Loop Piping

3/8" Threaded Rod (By Others)

Shutoff Ball Valves with P/T Ports & Flexible Hoses

Discharge DuctReturn Air

Discharge Air

Unit Hanger Brackets

Line Voltage Unit Power

Unit Mounted Loop Pumps

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Ground-Loop Application

CAUTION The following instructions represent industry accepted installa-

tion practices for closed loop earth coupled heat pump systems. Instructions are provided to assist the contractor in installing trouble free ground loops. These instructions are recommenda-tions only. State/provincial and local codes MUST be followed and installation MUST conform to ALL applicable codes. It is the responsibility of the installing contractor to determine and comply with ALL applicable codes and regulations.

CAUTION Ground loop applications require extended range equipment

and optional refrigerant/water circuit insulation.

Pre-InstallationPrior to installation, locate and mark all existing underground utilities, piping, etc. Install loops for new construction before sidewalks, patios, driveways, and other construction has begun. During construction, accurately mark all ground loop piping on the plot plan as an aid in avoiding potential future damage to the installation.

Piping InstallationThe typical closed loop ground source system is shown in Figure 26. All earth loop piping materials should be limited to polyethylene fusion only for in-ground sections of the loop.Figure 25:Polyethylenefusedpiping

Galvanizedorsteelfittingsshouldnotbeusedatanytimedue to their tendency to corrode. All plastic to metal threaded fittingsshouldbeavoidedduetotheirpotentialtoleakinearthcoupledapplications.Aflangedfittingshouldbesubsti-tuted.P/Tplugsshouldbeusedsothatflowcanbemeasuredusing the pressure drop of the unit heat exchanger.

Figure 26:Typicalgroundloopapplication(looppumpbyothersshown)

Power Disconnect

Vibration Isolation Pad

Loop Pump Flow Controller

Shutoff Ball Valves with P/T Ports & Flexible Hoses

Line Voltage Wiring

Low Voltage Thermostat Wiring

Supply & Return Ground Loop Piping

System Applications

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All alcohols should be premixed and pumped from a res-ervoir outside of the building when possible or introduced under the water level to prevent fumes. Calculate the total volumeoffluidinthepipingsystem.Thenusethepercentageby volume shown in Table 13 for the amount of antifreeze needed. Antifreeze concentration should be checked from a wellmixedsampleusingahydrometertomeasurespecificgravity.Figure 27: Flushing the loop

Earth loop temperatures can range between 25 and 110°F [-4 to 43°C]. Flow rates between 2.25 and 3 gpm [2.41 to 3.23 l/m per kW] of cooling capacity is recommended in these applications.Testindividualhorizontalloopcircuitsbeforebackfilling.Test vertical U-bends and pond loop assemblies prior to installation. Pressures of at least 100 psi [689 kPa] should be used when testing. Do not exceed the pipe pressure rating. Test entire system when all loops are assembled.

Flushing the Earth LoopUponcompletionofsysteminstallationandtesting,flushthesystem to remove all foreign objects and purge to remove all air.

AntifreezeIn areas where minimum entering loop temperatures drop be-low 40°F [5°C] or where piping will be routed through areas subject to freezing, antifreeze is required.Alcohols and glycols are commonly used as antifreeze; how-everyourlocalsalesofficeshouldbeconsultedtodeterminethe antifreeze best suited to your area. Freeze protection should be maintained to 15°F [9°C] below the lowest expect-ed entering loop temperature. For example, if 30°F [-1°C] is the minimum expected entering loop temperature, the leaving loop temperature would be 22 to 25°F [-6 to -4°C] and freeze protection should be at 15°F [-10°C]. Calculation is as fol-lows: 30°F - 15°F = 15°F [-1°C - 9°C = -10°C].

Table 13:Antifreezepercentagebyvolume

TypeMinimum Temperature for Low Temperature Protection

10°F [-12.2°C] 15°F [-9.4°C] 20°F [-6.7°C] 25°F [-3.9°C]

Methanoll00% USP food grade Propylene Glycol

Ethanol1

25% 21% 16% 10%

38% 25% 22% 15%

29% 25% 20% 14%

Note: 1 Must not be denatured with any petroleum product.

Table 14: Antifreeze correction factorsAntifreeze % by weight

15% 25% 35% 45%

Ethanol

Cooling Capacity 0.985 – – –

Heating Capacity 0.9825 – – –

Pressure Drop 1.04

Ethylene GlycolCooling Capacity 0.9935 0.9895 0.985 0.981

Heating Capacity 0.9865 0.9795 0.973 0.965

Pressure Drop 1.10 1.16 1.22 1.27

MethanolCooling Capacity 0.985 – – –

Heating Capacity 0.9825 – – –

Pressure Drop 1.04 – – –

Propylene GlycolCooling Capacity 0.985 0.975 0.965 0.955

Heating Capacity 0.981 0.9685 0.952 0.936

Pressure Drop 1.11 1.20 1.31 1.40

System Applications

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Water Quality Standards - "Table 16: Water impurities, re-sult & recommended water system application" on page 23 should be consulted for water quality requirements. Scaling potential should be assessed using the pH/Calcium hard-ness method. If the pH <7.5 and the calcium hardness is less than 100 ppm, scaling potential is low. If this method yields numbers out of range of those listed, the Ryznar Stability and Langelier Saturation indecies should be calculated. Use the appropriate scaling surface temperature for the application, 150°F [66°C] for direct use (well water/open loop) and DHW (desuperheater); 90°F [32°F] for indirect use. A monitor-ing plan should be implemented in these probable scaling situations. Other water quality issues such as iron fouling, corrosion prevention and erosion and clogging should be referenced in Table 16.Expansion Tank and Pump - Use a closed, bladder type expansion tank to minimize mineral formation due to air exposure. The expansion tank should be sized to provide at least one minute continuous run time of the pump using its draw-down capacity rating to prevent pump short cycling. Discharge water from the unit is not contaminated in any manner and can be disposed of in various ways, depending on local building codes (e.g. recharge well, storm sewer, drain field,adjacentstreamorpond,etc.).Mostlocalcodesforbidthe use of sanitary sewer for disposal. Consult your local building and zoning department to assure compliance in your area.Water Control Valve - Note the placement of the water control valve in Figure 28. Always maintain water pressure in the heat exchanger by placing the water control valve(s) on the return line to prevent mineral precipitation during the off-cycle. Pilot operated slow closing valves are recommended to reduce water hammer. If water hammer persists, a mini-expansion tank can be mounted on the piping to help absorb theexcesshammershock.Ifafieldprovidedmotorizedvalveand actuator is utilized, ensure that the total ‘VA’ draw of the valve can be supplied by the unit transformer. For instance, a slow closing valve can draw up to 35VA. Units are furnished with a factory-installed 50 VA transformer. An optional 75VA transformer is also available. A typical pilot operated solenoid valve draws approximately 15VA (see Figure 39).

System ApplicationsGround-Water ApplicationOpen Loop - Ground Water Systems - Typical open loop piping is shown in Figure 28. Shut off valves should be included for ease of servicing. Boiler drains or other valves shouldbe“tee’d”intothelinestoallowacidflushingoftheheat exchanger. Shut off valves should be positioned to allow flowthroughthecoaxviatheboilerdrainswithoutallowingflowintothepipingsystem.P/Tplugsshouldbeusedsothatpressure drop and temperature can be measured. Piping mate-rials should be limited to copper or PVC SCH80.Note: Due to the pressure and temperature extremes, PVC

SCH40 is not recommended.Water quantity should be plentiful and of good quality. See "Water impurities, result & recommended water system ap-plication" on page 23 for water quality guidelines. The unit can be ordered with either a copper or cupro-nickel water heat exchanger. Consult Table 16 for recommendations. Copper is recommended for open loop ground water systems that are not high in mineral content or corrosiveness. In conditions anticipating heavy scale formation or in brackish water, a cupronickel heat exchanger is recommended. In ground water situations where scaling could be heavy or where biologi-cal growth such as iron bacteria will be present, an open loop system is not recommended. Heat exchanger coils may over time lose heat exchange capabilities due to build up of mineral deposits. Heat exchangers must only be serviced by a qualifiedtechnician,asacidandspecialpumpingequipmentis required. Desuperheater coils can likewise become scaled and possibly plugged. In areas with extremely hard water, the owner should be informed that the heat exchanger may requireoccasionalacidflushing.Insomecases,thedesuper-heater option should not be recommended due to hard water conditions and additional maintenance required.Figure 28:Typicalopenloopapplication

Optional (Field-Installed) Water Control

Valve Flow Regulator

Optional Filter

P/T Plugs Boiler

Drains

Shutoff Valve

Pressure Tank

Return

Supply

Power Disconnect

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Flow Regulation - Flow regulation can be accomplished by two methods. One method involves simply adjusting the ball valve or water control valve on the discharge line. Measure the pressure drop through the unit heat exchanger, and deter-mineflowratefromTable 15. Since the pressure is constantly varying, two pressure gauges may be needed. Adjust the valve untilthedesiredflowof1.5to4gpm,perton[5.7to15.1l/m,perkW]isachieved.Asecondmethodofflowcontrolregula-tionrequiresaflowcontroldevicemountedontheoutletofthewatercontrolvalve.Thedeviceistypicallyabrassfittingwithanorificeofrubberorplasticmaterialthatisdesignedtoallowaspecifiedflowrate.Onoccasion,flowcontroldevicesmay produce velocity noise that can be reduced by applying some back pressure from the ball valve located on the dis-charge line. Slightly closing the valve will spread the pressure drop over both devices, lessening the velocity noise.

Table 15: Water pressure drop

Unit Size GPMPressure Drop, psi (kPa)

50ºF 70ºF 90ºF

007

1.0 0.7 1.6 0.7

1.5 1.4 3.0 1.3

2.0 2.2 4.8 2.0

009

1.9 2.0 1.9 1.8

2.3 2.7 2.6 2.5

3.4 3.4 3.3 3.2

012

2.0 5.1 2.1 2.0

3.0 9.7 4.1 3.9

4.0 15.4 6.4 6.2

015

2.5 1.2 1.1 1.1

3.8 2.6 2.5 2.4

5.0 4.5 4.3 4.2

019

3.8 2.5 2.4 2.3

4.5 3.6 3.4 3.3

5.3 4.9 4.7 4.5

024

4.0 1.1 1.0 1.0

6.0 2.3 2.2 2.1

8.0 3.9 3.7 3.6

030

5.0 1.6 1.6 1.5

7.5 3.4 3.3 3.2

10.0 5.8 5.5 5.3

036

6.0 1.9 1.8 1.8

9.0 4.0 3.9 3.7

12.0 6.8 6.5 6.3

042

7.0 1.0 1.0 0.9

10.5 2.1 2.1 2.0

14.0 3.7 3.5 3.4

048

10.0 2.0 1.9 1.8

12.0 2.8 2.6 2.5

14.0 3.7 3.5 3.4

060

10.0 2.0 2.0 1.9

15.0 4.4 4.2 4.1

20.0 7.7 7.3 7.1

070

15.0 4.4 4.2 4.1

18.0 6.3 6.0 5.8

21.0 8.4 8.1 7.8

System Applications

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Water System QualityThecleaning,flushingandchemicaltreatmentofawatersourceheatpumpsystemisfundamentaltoefficientoperationand the life expectancy of the system.Potential system problems produced by the use of water fall into three general categories:1. Scale formation – Mineral deposits which result from the

crystallization and precipitation of dissolved salts in the water. The deposits form an insulating barrier, reducing theheattransferrateandimpedingthecirculationoffluidsdue to increased pressure drop.

2. Corrosion – Decomposition of the metal caused by absorption of gases from the air. Corrosion may occur in any metal component of the system.

3. Organic growths – Slime and algae which form under certain environmental conditions, and can reduce the heat transfer rate by forming an insulating coating or can promote corrosion by pitting.

The system water should be evaluated for degrees of impuri-ty, with testing available from independent testing labs, health departments or state agencies. Table 16 is a list of water characteristics, the potential impuri-ties and their results and the recommended treatment.

Avoiding Potential ProblemsAs shown in Table 16, all water contains some degree of impurities which may affect the performance of a heat pump system. The use of a cupro-nickel coil can help avoid poten-tialproblems.Waterflowratesshould:A. be high enough that the temperature rise through the heat

exchanger does not exceed 10° F when operating in the cooling mode.

B. not exceed 4 GPM per nominal ton. Flow rates that have velocities of 10 feet per second or more may cause pipe erosion and heat exchanger failure.

Table 16:Waterimpurities,result&recommendedwatersystemapplication

Impurity Copper Coils Curpro-nickel Coils ResultApplication

Open Recirculating Closed Recirculating

Calcium & Magnesium Salts

(hardness)

Less than 350 ppm

350 ppmSea Water

Scaling

1. Bleed-off2. Surface active agents such

as polyphosphates.3. Addition of acid.4. pH adjustment.Other considerations:▪Adequate fouling factor▪ Surface temperature▪ Water temperature▪ Clean system

No treatment required

Iron oxide Low levels only Moderate levels

Corrosion

1. Corrosion inhibitors in high concentrations (200 to 500 ppm).

2. Corrosion inhibitors in low concentrations (20 to 80 ppm).

3. pH control.4. Proper materials of con-

struction.

Corrosion inhibitors in high concentrations.Proper materials of construction.

pH 7 - 9 5 – 10

Hydrogen Sulfide Less than 10 ppm 10 – 50 ppm

CO2 Less than 50 ppm 50 – 75 ppm

Chloride Less than 300 ppm 300 – 600 ppm

Total Dissolved Solids

Less than 1000 ppm 1000 – 1500 ppm

Slime & AlgaeSlime and algae can form undercertain environmental conditions

Reduced heat transfer due to forming of insulating coat-ing, orpitting due to corrosion

Chlorinated phenols.Other biocides.Chlorine by hypochlorites or by liquid chlorine No treatment required

Notes: 1. The tremendous variety in water quality around the country makes the recommendation of a single best method of treatment impossible. Consult a local water treatment specialist for specific treatment recommendations.

2. Cupro-nickel is recommended if iron bacteria is high, suspended solids or dissolved oxygen levels are high. 3. If the concentration of these corrosives exceeds the maximum tabulated in the cupro-nickel column, then the

potential for serious corrosion problems exists.

System Applications

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Supply & Return PipingAll units should be connected to supply and return piping in a two-pipereversereturnconfiguration.Areversereturnsystemis inherently self-balancing and requires only trim balanc-ingwheremultiplequantitiesofunitswithdifferentflowandpressure drop characteristics exist in the same loop. • Toinsureproperwaterflow,measurethetemperature

differential between the supply and return connections. The temperature differential should be 10°F to 14°F (5°C to 8°C) for units in cooling mode.

A direct return system may also work acceptably, but proper waterflowbalancingismoredifficulttoachieveand maintain.• Thepipingcanbesteel,copperorPVC.Notes: Polyolester Oil, commonly know as POE oil is a

synthetic oil used in many refrigeration systems. POE oil, if ever in contact with PVC/CPVC will coat the inside wall of PVC/CPVC pipe causing environmental stress fractures.

Although there is no PVC/CPVC piping in this product, please keep this in mind when selecting piping materials for your application, as system failure and property damage could result.

Supply and return runouts usually join the unit via short lengthsofhighpressureflexiblehosewhicharesoundattenu-ators for both unit operating noise and hydraulic pumping noise. • Oneendofthehoseshouldhaveaswivelfittingto

facilitate removal for service. Hard piping can also be brought directly to the unit. Note: This option is not recommended since no vibration or

noise attenuation can be accomplished. The hard piping must have unions to facilitate unit removal. See Figure 30 for a typical reverse return piping system.• Someflexiblehosethreadedfittingsaresuppliedwith

sealantcompound.Ifnot,applyTeflontapetoassureatight seal.

Figure 29:Exampleofareversereturnpipingsystem

System Applications

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Note: Improper trapping can lead to several problems. If the trap is too tall, negative pressure will prevent drainage, causing condensate backup. If the trap is too short the seal will be destroyed or nonexistent, producing the same effect as a non-trapped system.

Figure 32:Horizontalunitvinylcondensatehose&trapdetail

C

A

B

7/8" I.D. Clear Plastic

Table 17: Condensate drain static pressures

Static Pressure A B C

Standard 1-1/4" 5/8" 2-3/4"

High 1-1/2" 3/4" 3-1/8"

1. Condensate piping can be steel, copper or PVC. Each unit includes a condensate connection.

2. Theunithasa3/4-inchfemalepipefittingoneachwatersource heat pump to accommodate the condensate drain connection. Factory supplied condensate hose assemblies haveapipethreadfittingtofacilitateconnectionofaflexiblevinylorsteelbraidedhose.AcompletecopperorPVCcondensatesystemcanbeused.Unionfittingsin the copper or PVC lines should be applied to facilitate removal.

3. Do not locate any point in the drain system above the drain connection of any unit.

4. Automaticflowcontrolleddevicesmustnotbeinstalledpriortosystemcleaningandflushing.

5. A high point of the piping system must be vented.6. Checklocalcodefortheneedfordielectricfittings.Itmaybenecessarytomanuallyfillthetrapatsystemstartup,ortoruntheunitforsufficienttimetobuildacondensateseal.The condensate trap and condensate piping drainage should be free of any foreign debris. Debris can prevent proper drain-age and unit operation and result in condensate buildup.

PipingFigure 30:Typicalhorizontalunitpiping

Ball Valves

Supply Riser

Return Riser

Condensate Riser

Supply Air

Hanger Kits (4)Flex Hoses

Electrical Access Panel

Note: Do not over-torque fittings. The maximum torque without damage to fittings is 30 foot pounds. If a torque wrench is not available, use as a rule of thumb, finger tight plus one quarter turn.

5. Supply and return shutoff valves are required at each conditioner. The return valve is used for balancing and should have a “memory stop” so that it can always be closed off but can only be reopened to the proper position fortheflowrequired.

6. No unit should be connected to the supply and return piping until the water system has been cleaned and flushedcompletely,see"Cleaning & Flushing System" on page 26.Afterthecleaningandflushinghastakenplace, the initial connection should have all valves wide openinpreparationforwatersystemflushing.

Condensate Drain ConnectionVertical units are factory provided with a condensate drain trap located inside the cabinet. Condensate removal piping must be pitched away from the unit not less than 1/4" per foot. A vent is required after the trap so that the condensate will drain away from the unit. The vent can also act as a clean out if the trap becomes clogged. To avoid having waste gases entering the building, the condensate drain should not be directly piped to a drain/waste/vent stack. See local codes for the correct application of condensate piping to drains

Figure 31: Unit condensate drain pipe trap detail

Optional Field- Installed Vent

1-1⁄2" (38mm)

1-1⁄2"(38mm)

1⁄4"PerFoot (21mm Per Meter)

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4. Trisodium phosphate was formerly recommended as a cleaningagentduringflushing.However,manystatesandlocalities ban the introduction of phosphates into their sewage systems. The current recommendation is to simply flushlongerwithwarm80°F(27°C)water.

5. Refillthesystemwithcleanwater.Testthewaterusinglitmus paper for acidity, and treat as required to leave thewaterslightlyalkaline(pH7.5to8.5).Thespecifiedpercentage of antifreeze may also be added at this time. Use commercial grade antifreeze designed for HVAC systems only. Do not use automotive grade antifreeze.

Oncethesystemhasbeenfilledwithcleanwaterandantifreeze (if used), precautions should be taken to protect the system from dirty water conditions. Dirty water will result in system wide degradation of performance andsolidsmayclogvalves,strainers,flowregulators,etc. Additionally, the heat exchanger may become clogged which reduces compressor service life or causes premature failure.

6. Set the loop water controller heat add setpoint to 70°F (21°C) and the heat rejection setpoint to 85°F (29°C). Supply power to all motors and start the circulating pumps.Afterfullflowhasbeenestablishedthroughallcomponents including the heat rejector (regardless of season) and air vented and loop temperatures stabilized, each of the conditioners will be ready for check, test and start-up, air balancing, and water balancing.

Cleaning & Flushing System1. Priortofirstoperationofanyconditioner,thewater

circulatingsystemmustbecleanedandflushedofallconstruction dirt and debris.

If the conditioners are equipped with water shutoff valves, either electric or pressure operated, the supply and return runouts must be connected together at each conditioner location. This will prevent the introduction of dirt into the unit. See Figure 33.

Figure 33:Supply&returnrunoutsconnectedtogether

Return Runout

Supply Runout

Mains

Flexible Hose

Runouts Initially Connected Together

2. Fill the system at the city water makeup connection with allairventsopen.Afterfilling,closeallairvents.

The contractor should start main circulator with the pressure reducing valve open. Check vents in sequence to bleed off any trapped air, ensuring circulation through all components of the system.

Power to the heat rejector unit should be off, and the supplementary heat control set at 80°F (27°C).

While circulating water, the contractor should check and repair any leaks in the piping. Drains at the lowest point(s)inthesystemshouldbeopenedforinitialflushandblowdown,makingsurecitywaterfillvalvesaresetto make up water at the same rate. Check the pressure gauge at pump suction and manually adjust the makeup to hold the same positive steady pressure both before and after opening the drain valves. Flush should continue for at least two hours, or longer if required, to see clear, clean drain water.

3. Shut off supplemental heater and circulator pump and open all drains and vents to completely drain down the system. Short circuited supply and return runouts should now be connected to the conditioner supply and returnconnections.Donotusesealersattheswivelflareconnections of hoses.

Piping

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Table 18: MicroTech III SmartSource unit controller terminals & descriptions

H1 – 1 24 24 VAC Power Input

H1 – 2 C 24 VAC common

H2 – 1 SL1 Fan Main Required Output – Switched L1

H2 – 2 Blank Terminal

H2 – 3 N Fan Main Required Output – Neutral

H3 – 1 HP1-1 Comp High Pressure Switch (HP1) Input Terminal 1

H3 – 2 HP1-2 Comp High Pressure Switch (HP1) Input Terminal 2

H4 – 1 1 Discharge Air Temp Sensor – Common

H4 – 2 Discharge Air Temp Sensor – Signal

H4 – 3 Leaving Water Temp Sensor – Common

H4 – 4 Leaving Water Temp Sensor – Signal

H5 – 1 1

Connections to I/O Expansion Board

H5 – 2

H5 – 3

H5 – 4

H5 – 5

H5 – 6

H5 – 7

H5 – 8

H5 – 9

H5 – 10

H5 – 11

H5 – 12

H6 – 1 1 CondensateOverflowSignalInput

H6 – 2 Compressor Suction Temp Sensor (LT1) – Common

H6 – 3 Compressor Suction Temp Sensor (LT1) – Signal

H6 – 4 Compressor Low Pressure Switch (LP1) – Source Voltage

H6 – 5 Compressor Low Pressure Switch (LP1) – Signal

H6 – 6 Reversing Valve – Common

H6 – 7 Reversing Valve – Output

H7 – 1 1 No Connection

H7 – 2 No Connection

H7 – 3 Red LED Output

H7 – 4 Green LED Output

H7 – 5 Yellow LED Output

H7 – 6 Red-Green-Yellow LED Common

H8 – 1 1 Isolation Valve/Pump Request Relay N/O

H8 – 2 Isolation Valve/Pump Request Relay N/C

H8 – 3 24 VAC Common

H9 – 1 1 Room Temp Sensor & Tenant Override – Signal

H9 – 2 Room Temp Sensor & Tenant Override – Common

TB1 – 1 1 Room Sensor – Status LED Output

TB1 – 2 2 Room Sensor – Fan Mode & Unit Mode Switches

TB1 – 3 3 Room Sensor – Setpoint Adjust Potentiometer

TB1 – 4 4 Room Sensor – Room Temp Sensor & Tenant Override

TB1 – 5 5 Room Sensor – DC Signal Common

TB2 – 1 R 24 VAC

TB2 – 2 A Thermostat – Alarm Output

TB2 – 3 W2 Thermostat – Heat Stage #2 (W2) Input

TB2 – 4 W1 Thermostat – Heat Stage #1 (W1) Input

TB2 – 5 Y2 Thermostat – Cool Stage #2 (Y2) Input

TB2 – 6 Y1 Thermostat – Cool Stage #1 (Y1) Input

TB2 – 7 G Thermostat – Fan Input

TB2 – 8 O Thermostat – Heat Stage #3 (W3) Input

TB2 – 9 C 24 VAC Common

TB3 – 1 E Emergency Shutdown Input

TB3 – 2 U Unoccupied Input

L1 – 1 L1 - 1 Line Voltage Terminal 1

L1 – 2 L1 - 2 Line Voltage Terminal 2

L1 – 3 L1 - 3 Line Voltage Terminal 3

N1 N1 Neutral Terminal 1

N2 N2 Neutral Terminal 2

N3 N3 Neutral Terminal 3

I/O expansion module connectors/terminals H1 – 1 1

Connections to Main Board

H1 – 2

H1 – 3

H1 – 4

H1 – 5

H1 – 6

H1 – 7

H1 – 8

H1 – 9

H1 – 10

H1 – 11

H1 – 12

H2 – 1 1 Auxiliary Heat Stage #2 Output – N/O

H2 – 2 No Connection

H2 – 3 24 VAC Common

H3 – 1 1 Ext. 24 VAC In

H3 – 2 Ext. 24 VAC Common In

H3 – 3 HGR / Waterside Economizer Output – N/O

H3 – 4 Ext. 24 VAC Common

H3 – 5 ECM Fan Motor Variable Speed Signal Output

H3 – 6 ECM Fan Motor Variable Speed Signal – Common

H4 – 1 1 Entering Water Temp Sensor – Signal

H4 – 2 Entering Water Temp Sensor – Common

H5 – 1 1 No Connection

H5 – 2 No Connection

H5 – 3 Red LED Output

H5 – 4 Green LED Output

H5 – 5 Yellow LED Output

H5 – 6 Red-Green-Yellow LED Common

H6 – 1 HP2-1 Comp High Capacity High Press Sw (HP2) Input Terminal 1

H6 – 2 HP2-2 Comp High Capacity High Press Sw (HP2) Input Terminal 2

H7 – 1 Fan Speed Table Row Select – Signal

H7 – 2 Fan Speed Table Row Select – Common

H7 – 3 Thermostat – Heat Stage #4 (W4) Input – Signal

H7 – 4 Auxiliary 24 VAC Out

H8 – 1 1 Compressor – High Capacity Output – N/O

H8 – 2 24 VAC Common

H8 – 3 No Connection

H8 – 4 Auxiliary Heat Stage #1 Output – N/O

H8 – 5 24 VAC Common

TB1 – 1 1 Humidistat Signal Input

TB1 – 2 2 Thermostat - Heat Stage #4 (W4) Input – Signal

Controls

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ControlsFigure 34: MicroTech SmartSource unit controller & I/O expansion module connectors descriptions

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sorislockedout.Ifthecondensatesensordetectsafilleddrain pan, the compressor operation will be suspended only in the cooling mode. The unit is reset by opening and closing the disconnect switch on the main power supply to the unit in the event the unit compressor operation has been suspended due to low temperature (freezestat) switch, high pressure switch, or low pressure switch. The unit does not have to be reset on acondensateoverflowdetection.The MicroTech III SmartSource unit controller fault output sends a signal to an LED on a wall thermostat. Table 19 on page 30 shows for which functions the fault output is “on” (sending a signal to the LED).

Unit Protections & LED Fault Status Annunciation Refrigerant Circuit High Pressure Protection A normally closed high (compressor discharge) pressure switch is used in SmartSource units to help protect the refrig-erant circuit from excessively high pressure. The controller will monitor this switch. Note: Due to the method of sensing the HP switch, the true

state cannot be determined unless the compressor output is active.

Refrigerant Circuit Low Pressure ProtectionA normally closed low (compressor suction) refrigerant pres-sure switch is used in SmartSource units to help protect the refrigerant circuit from excessively low refrigerant pressure. The controller will monitor the switch, when the low-pressure switch contacts are open for more than the low-pressure time delay, default is 30 seconds, the controller will go into the low-pressure fault mode.

Condensate Overflow Sensor (Cooling & Dehumidification Modes Only)The controller is designed to sense when condensate wa-ter levels in the drain pan become excessively high. When high condensate water levels are detected during cooling or dehumidificationmode,thecontrollerwillgointocondensateoverflowwarningmode.• Nocondensateoverflowwarningswilloccurwhenthe

unit is running in heating modes, thus allowing the unit to heat with high condensate water levels.

• Thefanwilloperatenormallyduringthecondensateoverflowfaultmode.

Heat Exchanger Low Temperature ProtectionThe Suction Line Temperature sensor is located on the suc-tion line of the compressor and is used to help protect the unit from excessively low water coil and air coil temperatures. • ThecontrolmodulewillmonitortheSLTsensorandifthe

refrigerant temperature drops below the low temperature limit set point, the controller will go into the low temperature fault mode.

The controller is programmed for different responses if a low temperature fault is detected during heating or cooling modes.

MicroTech® III SmartSource Unit ControllerThe MicroTech III SmartSource unit controller is provided with two drive terminals, R (24VAC), and C (0VAC) that can be used to drive the thermostat inputs (G, Y1, Y2, W1, W2, W3, W4 and Humidistat) and control inputs (U, E and O). Any combination of or single board drive terminal (R, or C) may be used to operate the MicroTech III’s unit control-ler or thermostat inputs. Some of the control inputs are used within the Water Source Heat Pump and not accessible to the enduserwithoutafieldservicetool(laptopwithappropriatesoftware).Typically the MicroTech III SmartSource unit controller's R (24VAC) terminal is used to drive the board’s thermostat in-puts by connecting it to the R terminal of an industry standard thermostat. The control outputs of the standard thermostat are then connected to the MicroTech III SmartSource unit con-troller 's thermostat inputs. Any remaining board input(s) may be operated by additional thermostat outputs or remote relays (dry contacts only).All MicroTech III SmartSource unit controller inputs must be operated by dry contacts powered by the control board’s power terminals. No solid state devices (Triacs) may be used to operate MicroTech III SmartSource unit controller inputs. No outside power sources may be used to operate Micro-Tech III. All units must be properly grounded per local code requirements. R – 24VAC current R – G = Thermostat fan input R–Humidistat(HGRorCoolingatDehumidification

fan speed) R – Y1 = Stage #1 Cooling R – Y2 = Stage #2 Cooling R – W1 = Stage # Heating R – W2 = Stage #2 Heating R – W3 Stage #3 Heating R – W4 Stage #4 HeatingThe MicroTech III SmartSource unit controller has a lockout circuit to stop compressor operation if the high pressure or low pressure switch opens. If a compressor low suction tem-perature or freeze fault is detected, the unit will go into the cooling mode for 60 seconds to defrost any slush in the water-to-refrigerant heat exchanger. After 60 seconds the compres-

Controls

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■ LowRefrigerantTemperatureProtectioninheatingmode■ LowRefrigerantTemperatureProtectionincoolingmode

Low Water Temperature ProtectionThere are two versions of low water temperature protection,1. Low Entering Water Temperature protection or;2. Low Leaving Water Temperature protection.

Emergency ShutdownThe controller will be in remote shutdown when the emer-gency shutdown contact closes to ground. Remote shutdown is provided so that when properly connected to a water loop controller or remote switch, the emergency shutdown input can be used to shut down the water source heat pump.

Low Voltage (Brownout) ProtectionThe Baseboard controller module will monitor the 24 volt power input supplied to the board. If a low voltage condition is detected the control module will shut down the unit to pro-tect electrical components from low line voltage conditions.■ ElectricalCharacteristics • Linevoltagefeedstheprimarysideofthe24volt

transformer whose secondary output supplies power to the controls.

• Whenthelinevoltagedrops,thetransformeroutputvoltage drops a corresponding amount.

• TheBaseboardcontrolmodulemonitorsthesupplyvoltage from the transformer and after calibration will detect low line voltage conditions

■ LowVoltageCalibrationProcess • TheLowVoltageCalibrationprocessisfirst

performed at the factory, and results in a Brownout Reference set point that will protect the unit under normaloperatingconditionsinthefield.

■ LowVoltageProtectionControlSequence • Whenthelinevoltagedropsbelow80%oftheunit

nameplate rated value, the controller senses the lower 24 volt supply voltage.

Intelligent Alarm ResetThis feature applies to faults that do not clear automatically. It is used to minimize nuisance trips of automatic lockouts caused by temporary conditions that might inhibit the unit from performing normal functions. • WhenanIntelligentResetalarmoccurs,itiscountedand

the alarm is cleared when the condition returns to normal. If the alarm occurs two more (for a total of 3) times within a 24-hour period, the heat pump remains off (locked out) until the alarm is manually cleared. The control board is reset by a short interruption of unit power, or remotely reset by pressing the timed override button for more than 10 seconds, or through the service tool, or over the network.

• Attheendofthe24hourperiod,allcountsforIntelligentReset alarms are reset to zero.

ControlsRemote Reset of Automatic LockoutsThe Remote Reset feature provides the means to remotely reset automatic lockouts. There are (3) means to reset an auto-matic lockout condition:• Usingthethermostatcreate2demandsforcapacitywithin

30 seconds• PresstheRoomSensororThermostatTimedOverride/

Reset Button for more than 10 seconds• TurntheunitpoweroffWhen the cause of the fault condition has been cleared, and the unit transitions from not requiring any capacity to need-ing any capacity twice within 30 seconds (accomplished by user manipulation of the Heat/Cool/Auto/Off switch on the thermostat), an alarm reset equivalent to a tenant override button reset is generated. The intelligent reset counter and the 24 hour timer are cleared when this type of alarm reset is generated.Note: This feature only applies to thermostat controlled

systems.For room sensor controlled units, pressing the “Override” or “Reset” button for more than 10 seconds will apply a ground signal to the tenant override in(screw terminal connection at TB1 pin 4) will clear the lockout alarm once the cause of the fault condition has been cleared.A unit power cycle can also be used to clear an automatic lockout if the conditions causing the fault have been cleared.Table 19: MicroTech III SmartSource unit controller fault & status LED's

Description Type Yellow Green Red

IO Expansion Communication Fail Fault ON Flash Flash

InvalidConfiguration Fault Flash Flash OFF

Low Voltage Brownout Fault OFF Flash OFF

Emergency Shutdown Mode OFF Flash OFF

Compressor High Pressure Fault OFF OFF Flash

Compressor Low Pressure Fault OFF OFF ON

Compressor Suction Temp Sensor Fail

Fault Flash Flash ON

Compressor Low Suction Temp Fault Flash OFF OFF

Freeze Fault Detect Fault Flash OFF Flash

Room Temp Sensor Fail (Room Sensor Control Only)

Fault Flash Flash ON

Leaving Water Temp Sensor Fail Fault Flash Flash ON

CondensateOverflow Fault ON OFF OFF

Serial EEPROM Corrupted Fault ON ON ON

Waterside Economizer Low Temp Cutout (WSE Control & Call for Cooling)

Mode Flash ON Flash

Service Test Mode Enabled Mode Flash Flash Flash

Unoccupied Mode Mode ON ON OFF

Occupied, Bypass, Standby, or Ten-ant Override Modes

Mode OFF ON OFF

Note: Mode/faults are listed in order of priority.

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Table 20: I/O expansion module fault & status LED'sDescription Type Yellow Green Red

Baseboard Communication Fail

Fault Flash OFF Flash

Entering Water Temp Sensor Fail(Boilerless Electric Heat or Waterside Economizer Only)

Fault ON OFF Flash

Low Entering Water Temperature(No Display On Boilerless Electric Heat)

Fault OFF ON Flash

Fan is OFF Mode OFF ON OFF

Fan Running at Low Speed (0 to 33%) Duty Cycle

Mode OFF Flash OFF

Fan Running at Medium Speed (34 to 66%) Duty Cycle

Mode ON Flash OFF

Fan Running at High Speed (67 to 100%) Duty Cycle

Mode Flash Flash OFF

Table 21:Faultrecoveryandreset

Fault DescriptionAuto

Recovery

Tenant Override Button Reset

NetworkReset

I/O Expansion Communication Fail

Yes No No

InvalidConfiguration No No No

Low Voltage Brownout Yes No Yes

All Sensor Failures No No Yes

Compressor High Pressure No Yes Yes

Compressor Low Pressure Yes1 Yes Yes

Compressor Low Suction Temp or Freeze Fault Detect (In Heating Mode)

Yes1 Yes Yes

Compressor Low Suction Temp or Freeze Fault Detect (In Cooling or DehumidificationModes)

No Yes Yes

CondensateOverflow Yes No Yes

Low Entering Water Temp Yes No No

Serial EEPROM Corrupted No No No

Waterside Economizer Low Temp Cutout

Yes No No

Note: 1 Indicates auto recover is subject to intelligent alarm reset. Alarm auto recovers on first two occurrences, locked out on third within 24 hour period.

See "Intelligent Alarm Reset" on page 30 for further details.

ControlsMicroTech SmartSource Controller with LonWorks® Communication ModuleFor installation and operation information on LonWorks Communication Module and other ancillary control compo-nents, see:• IM927-MicroTechIIIWaterSourceHeatPump

LonWorks Communication Module• IM933-LonMakerIntegrationPlug-inTool:Foruse

with the MicroTech III SmartSource Unit Controller • IM955-MicroTechIIIWallSensorforusewith

MicroTech III SmartSource Unit Controller Figure 35: LonWorks communication module

MicroTech SmartSource Controller with BACnet Communication ModuleFor installation and operation information on MicroTech III SmartSource unit controller and other ancillary components, see:

■ IM928-MicroTechIIIBACnetCommunicationModule■ OM931-MicroTechIIISmartSourceUnitControllerfor

Water Source Heat Pumps Operation and Maintenance Manual

■ IM955-MicroTechIIIWallSensorForusewithMicroTech III SmartSource Unit Controller

Figure 36: MicroTech III BACnet water source heat pump snap-in communication module

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Figure 37: LonWorks® or BACnet communication module placement on MicroTech™ III SmartSource unit controller

Controls

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Rotary Fan Speed Selection SwitchA 4-position rotary switch located in the control box allows CFMsettingstobefieldadjustable.Fanspeedcontrolopti-mizes unit fan speed based on thermostat/room sensor inputs. The rotary switch allows for manually setting an optimal fan speedspecifictotheapplicationrequirements.Eachpositionon the rotary switch represents settings 1-4, see Table 23 and Table 22.

Figure 38:4-positionrotaryfanspeedswitch

Controls

Constant Torque MotorTable 22: Constant torque motor CFM values

UnitSize

Setting FunctionExternal Static Pressure (inches of water column)

.10 .15 .20 .25 .30 .35 .40 .45 .50 .55 .60 .65 .70

007

Setting 4

Stage 1

341 323 306 290 273 257 240 224 208 192 176 161 145

Setting 3 318 300 282 265 248 231 214 197 181 165 150

Setting 2 295 276 257 239 221 204 187 170 154

Setting 1 295 276 257 239 221 204 187 170 154

Setting 4

Stage 2

362 346 330 314 298 282 266 250 234 218 202 187 171

Setting 3 341 323 306 290 273 257 240 224 208 192 176 161 145

Setting 2 318 300 282 265 248 231 214 197 181 165 150

Setting 1 295 276 257 239 221 204 187 170 154

Setting 4

Fan Only

295 276 257 239 221 204 187 170 154

Setting 3 295 276 257 239 221 204 187 170 154

Setting 2 255 234 214 194 175 157 139 122 105 90 75 60 47

Setting 1 255 234 214 194 175 157 139 122 105 90 75 60 47

009

Setting 4

Stage 1

380 364 348 333 317 302 286 270 255 239 224

Setting 3 355 338 322 306 289 273 257 241 225

Setting 2 326 308 291 273 256 239 223

Setting 1 326 308 291 273 256 239 223

Setting 4

Stage 2

407 392 377 362 347 332 317 302 287 272 256 241 226

Setting 3 380 364 348 333 317 302 286 270 255 239 224

Setting 2 355 338 322 306 289 273 257 241 225

Setting 1 326 308 291 273 256 239 223

Setting 4

Fan Only

326 308 291 273 256 239 223

Setting 3 326 308 291 273 256 239 223 206 190 174 159 143 128

Setting 2 283 264 245 226 208 190 173 156 139 124 108 93 79

Setting 1 283 264 245 226 208 190 173 156 139 124 108 93 79

012

Setting 4

Stage 1

458 444 430 416 402 388 374 360 346 332 318 304 290

Setting 3 426 412 398 383 368 354 339 324 310 295

Setting 2 393 378 363 348 332 317 302 286

Setting 1 393 378 363 348 332 317 302 286

Setting 4

Stage 2

487 473 460 446 432 419 406 392 379 366 353 341 328

Setting 3 458 444 430 416 402 388 374 360 346 332 318 304 290

Setting 2 426 412 398 383 368 354 339 324 310 295

Setting 1 393 378 363 348 332 317 302 286

Setting 4

Fan Only

393 378 363 348 332 317 302 286

Setting 3 393 378 363 348 332 317 302 286

Setting 2 341 323 306 290 273 257 240 224 208 192 176 161 145

Setting 1 341 323 306 290 273 257 240 224 208 192 176 161 145

Note: Gray tinted areas, below recommended operating range.

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Constant CFM Type ECM Motor Fan SettingsTable 23:SinglestageunitswithconstantCFMtypeECMmotor

UnitSize

SettingMaximum

ESP(in. wg.)

1Low CFMHeat

1High CFMHeat

1Low CFMCool

1High CFMCool

FanOnly

DehumidificationElectric

Heat

015

Setting 4 (High) .70 500 560 500 560 375 375 560

Setting 3 (Standard) .70 440 500 440 500 375 375 560

Setting 2 (Medium) .70 375 440 375 440 280 375 560

Setting 1 (Low) .70 375 375 375 375 280 375 560

019

Setting 4 (High) .70 500 700 600 675 450 450 675

Setting 3 (Standard) .70 400 600 525 600 450 450 675

Setting 2 (Medium) .70 350 500 450 525 340 450 675

Setting 1 (Low) .70 300 400 450 450 340 450 675

024

Setting 4 (High) .70 800 900 800 900 600 600 900

Setting 3 (Standard) .70 700 800 700 800 600 600 900

Setting 2 (Medium) .70 600 700 600 700 450 600 900

Setting 1 (Low) .70 600 600 600 600 450 600 900

030

Setting 4 (High) .70 1000 1125 1000 1125 750 750 1125

Setting 3 (Standard) .70 875 1000 875 1000 750 750 1125

Setting 2 (Medium) .70 750 875 750 875 560 750 1125

Setting 1 (Low) .70 750 750 750 750 560 750 1125

036

Setting 4 (High) .70 1250 1400 1250 1400 940 938 1400

Setting 3 (Standard) .70 1090 1250 1090 1250 940 938 1400

Setting 2 (Medium) .70 940 1090 940 1090 700 938 1400

Setting 1 (Low) .70 940 940 940 940 700 938 1400

042

Setting 4 (High) .70 1400 1575 1400 1575 1050 1050 1575

Setting 3 (Standard) .70 1225 1400 1225 1400 1050 1050 1575

Setting 2 (Medium) .70 1050 1225 1050 1225 785 1050 1575

Setting 1 (Low) .70 1050 1050 1050 1050 785 1050 1575

048

Setting 4 (High) .70 1600 1800 1600 1800 1200 1200 1800

Setting 3 (Standard) .70 1400 1600 1400 1600 1200 1200 1800

Setting 2 (Medium) .70 1200 1400 1200 1400 900 1200 1800

Setting 1 (Low) .70 1200 1200 1200 1200 900 1200 1800

060

Setting 4 (High) .70 2000 2250 2000 2250 1500 1500 2250

Setting 3 (Standard) .70 1750 2000 1750 2000 1500 1500 2250

Setting 2 (Medium) .70 1500 1750 1500 1750 1120 1500 2250

Setting 1 (Low) .70 1500 1500 1500 1500 1120 1500 2250

070

Setting 4 (High) .70 2160 2400 2160 2400 1710 1710 2400

Setting 3 (Standard) .70 1920 2160 1920 2160 1710 1710 2400

Setting 2 (Medium) .70 1710 1920 1710 1920 1330 1710 2400

Setting 1 (Low) .70 1710 1710 1710 1710 1330 1710 2400

Note: 1 The unit is capable of high-low fan performance through the use of a 2-stage thermostat wired to specific terminals for High-Low CFM fan performance. Standard operation with a 1-stage thermostat is indicated as High CFM fan performance.

Controls

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IM 1139 / Page 35 of 52

Start-upInformation for Initial Start-up

CAUTION Units must be checked for water leaks upon initial water system

start-up. Water leaks may be a result of mishandling or damage during shipping. Failure by the installing contractor to check for leaks upon start-up of the water system could result in property damage.

Check, Test & Start ProcedureNOTICE

Complete the "Water Source Heat Pump Equipment Check, Test and Start Form" on page 48.

1. Open all valves to full open position and turn on power to the conditioner.

2. Set thermostat for “Fan Only” operation by selecting “Off” at the system switch and “On” at the fan switch. If “Auto” fan operation is selected, the fan will cycle with the compressor. Check for proper air delivery.

3. Set thermostat to “Cool.” If the thermostat is an automatic changeover type, simply set the cooling temperature to the coolest position. On manual changeover types additionally select “Cool” at the system switch.

Again, many conditioners have time delays which protect the compressor(s) against short cycling. After a few minutes of operation, check the discharge grilles for cool air delivery. Measure the temperature difference between entering and leaving water. It should be approximately 1½ times greater than the heating mode temperature difference. For example, if the cooling temperature difference is 15°F (8°C), the heating temperature difference should have been 10°F (5°C).

Withoutautomaticflowcontrolvalves,targetacoolingtemperature difference of 10°F to 14°F (5°C to 8°C). Adjust the combination shutoff/balancing valve in the returnlinetoawaterflowratewhichwillresultinthe10˚Fto14°F(5°Cto8°C)difference.

4. Set thermostat to “Heat.” If the thermostat is the automatic changeover type, set system switch to the “Auto” position and depress the heat setting to the warmest selection. Some conditioners have built-in time delays which prevent the compressor from immediately starting. With most control schemes, the fan will start immediately. After a few minutes of compressor operation, check for warm air delivery at discharge grille. If this is a “cold building” start-up, leave unit running until return air to the unit is at least 65°F (18°C).

Measure the temperature difference between entering and leaving air and entering and leaving water. With entering water of 60°F to 80°F (16°C to 27°C), leaving water should be 6°F to 12°F (3.3°C to 6.6°C) cooler, and the air temperature rise through the machine should not exceed 35°F (19°C). If the air temperature exceeds 35°F (19°C), thenthewaterflowrateisinadequate.

5. Check the elevation and cleanliness of the condensate line.Iftheairistoodryforsufficientdehumidification,slowly pour enough water into the condensate pan to ensure proper drainage.

6. If the conditioner does not operate, check the following points:

a. Is supply voltage to the machine compatible? b. Is thermostat type appropriate? c. Is thermostat wiring correct?7. If the conditioner operates but stops after a brief period: a. Isthereproperairflow?Checkfordirtyfilter,incorrect

fan rotation (3-phase fan motors only), or incorrect ductwork.

b. Isthereproperwaterflowratewithintemperaturelimits?Checkwaterbalancing;backflushunitifdirt-clogged.

8. Check for vibrating refrigerant piping, fan wheels, etc.9. Donotlubricatethefanmotorduringthefirstyearof

operation as it is pre lubricated at the factory.10. Field supplied relays installed on the input terminals W1,

W2, W3, W4, Humidistat, Y1, Y2 and G may introduce electrical noise. Never install relay coils in series with the inputs.

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Operating LimitsEnvironmentThis equipment is designed for indoor installation only. Sheltered locations such as attics, garages, etc., generally will not provide sufficientprotectionagainstextremesintemperatureand/orhumidity,andequipmentperformance,reliability,andservicelifemay be adversely affected.Table 24: Air limits in °F (°C)

Air LimitsStandard Range Units Geothermal Range Units

Cooling Heating Cooling Heating

Minimum Ambient Air 50° F (10°C) 50°F (10°C) 40°F (4°C) 40°F (4°C)

Maximum Ambient Air 100°F (38°C) 85°F (29°C) 100°F (38°C) 85°F (29°C)

Minimum Entering Air 50°F (10°C) 50°F (10°C) 50°F (10°C) 40°F (4°C)

Maximum Entering Air 100/83°F (38/28°C) 80°F (27°C) 100/83°F (38/28°C) 80°F (27°C)

Table 25: Water limits

Water LimitsStandard Range Units Geothermal Range Units

Cooling Heating Cooling Heating

Minimum Entering Water 55°F (13°C) 55°F (13°C) 30°F (-1°C) 20°F (-6°C)

Normal Entering Water 85°F (29°C) 70°F (21°C) 77°F (25°C) 40°F (4°C)

Maximum Entering Water 110°F (43°C) 90°F (32°C) 110°F (43°C) 90°F (32°C)

Minimum GPM/Ton 1.5

Nominal GPM/Ton 3.0

Maximum GPM/Ton 4.0

Notes: 1. Maximum and minimum values may not be combined. If one value is at maximum or minimum, the other two conditions may not exceed the normal condition for standard units. Extended range units may combine any two maximum conditions, but not more than two, with all other conditions being normal conditions.

2. This is not a normal or continuous operating condition. It is assumed that such a start-up is for the purpose of bringing the building space up to occupancy temperature.

Start-up

Factory-Installed OptionMotorized Isolation Valve & RelayThe motorized valve kit is available as a factory-installed and wiredoptionormaybeorderedasafield-installedaccessory.Wired as shown in Figure 39, the motorized valve will open on a call for compressor operation. Valves for unit sizes 007 to 019 are 1/2" while unit sizes 024 to 070 are 3/4".The motorized isolation valve actuator (ISO) has both a 24V power connection and a 24V end switch connection.

Figure 39: Motorized valve wiring

◄Backtopage 21

Install the supplied wire harness into plug H8 on the main control board. Run wires between the ISO actuator and the supplied wire harness ends.Connect N.O & N.C. actuators as shown on the schematicNote: The actuator end switch is applicable for unit sizes 015

through 070 only.The end switch should be wired in series with the 24V com-pressor signal wire. Connect the end switch wires as shown in the schematic. The end switch will close when the valve is fully open. Note: For detailed installation instructions for the motorized

valve, refer to IM 1151.

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Typical Wiring DiagramsMicroTech III Unit Control with BACnet Communication Module (HGRH) - 265-277V, 1-Phase

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Typical Wiring DiagramsMicroTech III Unit Control with BACnet Communication Module (HGRH)- 265-277V, 1-Phase, Service & Disconnect

Legend: Note: Devices in legend may or may not be on unit.ADR Aquastat, Discharge RefrigerantAHL Aquastat, High LimitAN1,2 LED Annunicator, circuit 1, 2CO1-04 Fan Motor 1-4 CapacitorC11-12 Compressor 1,2 CapacitorCP1,2 Compressor 1, 2COS CondensateOverflowProtectionSensorDAT Discharge Air Temperature SensorDCS Disconnect SwitchDSH Desuperheater PumpDSS Desuperheater Shutoff SwitchEB1 Expansion Control Board 1EB2 Expansion Control Board 2 - fan speed ctrlEH1 Electric HeatEWT Entering Water Temperature SensorFM1-4 Fan Motor 1-4GND GroundHG1,2 Hot Gas Reheat Valve Acutator

HHT Hot Water Heat Valve ActuatorHP1,2 High Pressure Switch 1, 2HUM Humidistat SensorISO Water Flow Isolation Valve ActuatorLAT Leaving Air Temperature SensorLP1,2 Low Pressure Switch 1, 2LT1,2 Compressor Suction Line Temperature Sensor 1, 2LWT Leaving Water Temperature SensorM01-04 Fan Motor 4 ContactorM11-1 Compressor 1, 2 ContactorM70, 71 Secondary Heat ContactorMCB Main Control BoardNCB Network Control BoardOLP Overload Protector - Compressor MotorPL1,2 Loop Pump 1, 2R15 Relay, Field Contacts, Alarm OutputR20 Relay, Loop PumpRAT Return Air Temperature SensorRV1,2 Reversing Valve 1, 2TB1 Terminal Block, Line VoltageTB2 Terminal Block, 24VTB3 Terminal Block, EH1 Line VoltageTR1 Transformer - ControlTR2 Transformer - Fan MotorTR3 Transformer - Loop PumpTSL Thermostat, WirelessTSW Thermostat, Wired (Unit-mounted)W0001-^ WireWH001-^ Wire HarnessWN1-^ Wire NutWP001-^ Wire PlugWPCP1 Wire Plug Assy - Compressor PowerWPT01 Wire Plug Assy - 2-stage Comp CtrlWSE Waterside Economizer Actuator

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Typical Wiring DiagramsMicroTech III Unit Control with BACnet Communication Module (WSE & DSH) - 208-230V, 1-Phase with 115V Loop Pumps and 20kW Electric Heat

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Typical Wiring DiagramsMicroTech III Unit Control with BACnet Communication Module (WSE & DSH) Service & Disconnect - 208-230V, 1-Phase with 115V Loop Pumps and 20kW Electric Heat

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IM 1139 / Page 41 of 52

Typical Wiring DiagramsMicroTech III Unit Control with LonWorks Communication Module - 208-230V, 3-Phase with 230V Loop Pumps and 5kW Electric Heat

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Typical Wiring DiagramsMicroTech III Unit Control with LonWorks Communication Module Service & Disconnect 208-230V, 3-Phase with 230V Loop Pumps and 5kW Electric Heat

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IM 1139 / Page 43 of 52

Typical Wiring DiagramsMicroTech III Unit Control with BACnet Communication Module (WSE) - 460V, 3-Phase with 230V Loop Pumps and 20kW Electric Heat

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Typical Wiring DiagramsMicroTech III Unit Control with BACnet Communication Module (WSE) Service & Disconnect - 460V, 3-Phase with 230V Loop Pumps and 20kW Electric Heat

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IM 1139 / Page 45 of 52

MaintenanceGeneral Maintenance1. Normal maintenance on all units is generally limited

tofilterchanges.Unitsareprovidedwithpermanentlylubricated motors and require no oiling even though oil caps may be provided.

2. Filter changes are required at regular intervals. The time period between changes will depend upon the project requirements. Some applications such as motels produce a lot of lint from carpeting and linen changes, and will requiremorefrequentfilterchanges.Checkfiltersat60-dayintervalsforthefirstyearuntilexperienceisacquired.Iflightcannotbeseenthroughthefilterwhenhelduptosunlight or a bright light, it should be changed. A more critical standard may be desirable.

3. The condensate drain pan should be checked annually and cleanedandflushedasrequired.

4. Record performance measurements of volts, amps, and water temperature differences (both heating and cooling). A comparison of logged data with start-up and other annual data is useful as an indicator of general equipment condition.

5. Periodic lockouts almost always are caused by air or water problems. The lockout (shutdown) of the unit is a normal protective result. Check for dirt in the water system, water flowrates,watertemperatures,airflowrates(maybeadirtyfilter),andairtemperatures.Ifthelockoutoccursin the morning following a return from night setback, entering air below machine limits may be the cause.

The in and outs of R-410AR-410A is a non-ozone depleting blend of two refrigerants -HFC-125andHFC-32inafiftypercentmixture.R-410Aexhibits higher operating pressure and refrigeration capacity than R-22. R-410A is intended for use in new air conditioning applications that have traditionally been used HCFC-22 (R-22). Due to higher capacity and pressure of R-410A, it must not be used in existing R-22 systems.AlthoughR-410Aisnon-flammableatambienttemperatureand atmospheric pressure, it can become combustible under pressure when mixed with air.Note: R-410A should not be mixed with air under pressure

for leak testing. Pressure mixtures of dry nitrogen and R-410A can be used for leak testing.

LubricationR-410A should be used only with polyester (POE) oil. The HFC refrigerant components in R-410A will not be compat-ible with mineral oil or alkylbenzene lubricants. R-410A sys-tems will be charged with the OEM recommended lubricant, ready for use with R-410A.

ChargingDue to the zeotropic nature of R- 410A, it should be charged as a liquid. In situations where vapor is normally charged into a system, a valve should be installed in the charging line to flashtheliquidtovaporwhilecharging. Make certain that the recycle or recovery equipment used is designed for R-410A. The pressure of R-410A refrigerant is approximately 60 percent greater than that of R-22. Pressure gauges require a range up to 800 PSIG high side and 250 PSIG low side. Recovery cylinders require a 400 PSIG rating – do not put R-410A in a 300 PSIG rated cylinder.

Recycle/recovery equipment must be designated for R-410A. R-410A pressure is greater than R-22. Improper equipment can cause severe injury or death.

WARNING

Note: Because a water source heat pump operates under a wide range of water and air temperatures, the values printed below are to be taken as suggested pressure and temperatures.) All Daikin McQuay water source heat pumps are designed for commercial use. The units are designed for the cooling mode of operation and fail safe to cooling. The reversing valve is energized for the heating mode of operation.

Superheat Head Pressure Water Delta T 8 to 14 degrees 335-355 PSIG 10° to 14°Note: All information above is based on ISO standard 13256-

1 and tested at these conditions.

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Troubleshooting

Table 26:Troubleshooting refrigeration circuit

Charge Undercharge System Low Low Low High Low Low Low Low Pressure (Possible Leak)

Overcharge System High High High Normal High Normal High Pressure

Low Air Flow Heating High High High Low High Low High Pressure

Low Air Flow Cooling Low Low Low High High Low Low Temp

Low Water Flow Heating Low Low High Low High Low Temp

Low Water Flow Cooling High High High High Low Low High High Pressure

High Air Flow Heating Low Low Low Low High Low Low Low TempHigh Air Flow Cooling Low High Normal High Low Low Normal High Pressure

High Water Flow Heating Normal Low Normal High Normal Normal Low High PressureHigh Water Flow Cooling Low Low Low Low High Normal Low Low Temp

TXV Restricted High Low High High Low Low

LowNormal

NormalLow

HighNormal

LowNormal

LowNormal

Normal Low

Air Water Safety Head Suction Compressor Super Temp (loops) Temp LockSymptom Pressure Pressure Amp Draw Heat

Subcooling Differential Differential Out

Typical Refrigeration CyclesFigure 40:Coolingmode–(singlecircuitonlyshown)

Return Air

Reversing Valve

Conditioned Air – (Cooling)

Thermal Expansion Valve

Co-Axial Heat Exchanger

Blower

Coil – Air to Refrigerant Heat Exchanger

Water In

Water Out

Sensing Bulb and Capillary Tube

Compressor

Cooling Refrigeration CycleWhenthewallthermostatiscallingforCOOLING,thereversingvalvedirectstheflowoftherefrigerant,ahotgas,leavingthe compressor to the water-to-refrigerant heat exchanger. Here the heat is removed by the water and the hot gas condenses to becomealiquid.Theliquidthenflowsthroughathermalexpansionmeteringsystemtotheair-to-refrigerantheatexchangercoil.The liquid then evaporates becoming a gas, at the same time absorbing heat and cooling the air passing over the surfaces of the coil.Therefrigerantthenflowsasalowpressuregasthroughthereversingvalveandbacktothesuctionsideofthecompressorto complete the cycle.

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IM 1139 / Page 47 of 52

Figure 41:Heatingmode–(singlecircuitonlyshown)Return Air

Thermal Expansion Valve

Co-Axial Heat Exchanger

Reversing Valve

Conditioned Air – (Heating)

Blower

Water In

Water Out

Sensing Bulb and Capillary Tube

Compressor

Coil – Air to Refrigerant Heat Exchanger

Heating Refrigeration CycleWhenthewallthermostatiscallingforHEATING,thereversingvalvedirectstheflowoftherefrigerant,ahotgas,leavingthecompressor to the air-to-refrigerant heat exchanger coil. Here the heat is removed by the air passing over the surfaces of the coil andthehotgascondensestobecomealiquid.Theliquidthenflowsthroughacapillarythermalexpansionmeteringsystemtothewater-to-refrigerant heat exchanger. The liquid then evaporates becoming a gas, at the same time absorbing heat and cooling the water.Therefrigerantthenflowsasalowpressuregasthroughthereversingvalveandbacktothesuctionsideofthecompressorto complete the cycle.

Troubleshooting

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Check, Test and Start WS-CTS-00.01

Group: WSHP

Date: October 2000 Supercedes: CTS-279-1

Job Name _________________________________________________________ Check, Test & Start Date ________________

City or Town __________________________________________ State _________________________ Zip ________________

Who is Performing CTS _____________________________________ Equipment Type (Check all that apply)

General Contractor _________________________________________

Essential Items Check of System – Note: “No” answers below require notice to installer by memorandum (attached copy.)

□Closed Loop □Open Loop

□Geothermal □Other (specify) ______________

Water Source Heat Pump Equipment Check, Test and Start Form

Essential Items CheckA. Voltage Check __________ Volts Loop Temp. ___________ °F Heating System Water P.H. Levels __________ Set For ___________ °F Cooling

B. Yes No Condition Comments

□ □ Loop Water Flushed Clean _________________________________________________________________

□ □ Closed Type Cooling Tower _________________________________________________________________

□ □ Water Flow Rate to Heat Pump Balanced ______________________________________________________

□ □ Standby Pump Installed ___________________________________________________________________

□ □ System Controls Functioning _______________________________________________________________

□ □ Outdoor Portion of Water System Freeze Protected ______________________________________________

□ □ Loop System Free of Air ___________________________________________________________________

□ □ Filters Clean ____________________________________________________________________________

□ □ Condensate Traps Installed _________________________________________________________________

Note: “No” answers below require notice to installer by memorandum (attached copy.)

□ □ Outdoor Air to Heat Pumps: ________________________________________________________________

□ □ Other Conditions Found: ___________________________________________________________________ _______________________________________________________________________________________

This form must be completed and submitted within ten (10) days of start-up to comply with the terms of the Daikin McQuay warranty. Forms should be returned to Daikin McQuay Warranty Department, 4900 Technology Park Blvd., Auburn, NY 13021-9030

Installation Data

Please include any suggestions or comments for McQuay International: _____________________________________________ ______________________________________________________________________________________________________ ______________________________________________________________________________________________________ ______________________________________________________________________________________________________

Above System is in Proper Working OrderNote: This form must be filled out and sent to the warranty administrator before any service money can be released.

Date

Signature for Sales Representative

Signature for Customer

For Internal Use Release: SM ________________________ CTS ________________________ T ________________________

Service Manager Approval

Date

©2012 McQuay International Check, Test & Start-up Form WS-CTS-00.01 (Rev. 10/00)

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Unit Check / Equipment Data

Installation Data

Job Name ___________________________________________________ Check Test Date: __________________________

City __________________________________________________________ State _______________ Zip ______________

Unit Model # _________________________________________________

Unit Serial # __________________________________ Job site Unit ID # (HP #) __________________________

General Contractor: ______________________________ Mechanical Contractor: __________________________

Technician Performing Start-Up: Name _______________________ Employer: __________________________

Complete equipment data from measurements taken at the locatons indicated on the drawing below.

Equipment Data

Flow Rate EWP - LWP = ∆P

EWP - PSI In _____________ minus LWP - PSI Out _______ equals∆P ___________ThefirststepinfindingGPMistosubtractleavingwaterpressurefromenteringwaterpressure.Thedifferencebe-tweenthetwoisreferredtoas∆P.∆PcanbeconvertedtoGPMbylookingintheequipmentspecificatoncatalog.Caution ∆P ≠ GPM

Note: A conversion table must be used to find GPM from (Delta) ∆P measurements.

Loop Fluid Temperature Rise / Drop through Coaxial Heat Exchanger EWT - LWT = ∆T EWT - °F Out _____________ minus LWT - °F Out ______________equalsFluid∆T ______________∆TistheriseordropinthefluidtemperatureasitpassesthroughtheCoaxial.

Air Temperature Rise / Drop through the air coil ∆T x CFM x 1.08 = BTUH Sensible

EAT - °F In _______________ minus LAT - °F Out _______________ equalsAir∆T _______________

Note: Perform Check, Test and Start-Up in the Cooling Mode Only.

AIR

COIL

V

VV

V

V

V

DischargeHot Gas

Suction

Compressor

Reversing Valve

V

COAX

IN OUTLWP

LWT

Loop Fluid Pressure (In PSI) EWP

Loop Fluid Temperature °F EWT

EATAir Temperature °F

LAT

IN OUT

ExpansionValve

Check, Test & Start

EWT- EnteringWaterTemperature EWP- EnteringWaterPressure EAT- EnteringAirTemperature ∆-Delta(Differential)LWT - Leaving Water Temperature LWP - Leaving Water Pressure LAT - Leaving Air Temperature CFM - Cubic Feet/Minute BTUH - British Thermal Units/Hour

13

24

5 6

1 2

3 4

5 6

Form No. ________________________

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Commercial Check, Test and Start Worksheet(Complete all equipment measurements indicated for each unit per installation on page 2)

Check Model Serial # H.P. # EWT LWT EWP LWP EAT LAT Volts Amps Air Filter Comments

Cooling and Coil (more comments on back)

Part No. _________________________

43 1 2 5 6

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4900 Technology Park Boulevard, Auburn, NY 13201-9030 USA, (315) 253-2771©2011 McQuay International

Form WS-CTS-00.01 (Rev. 10/00)

Notes / Comments

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©2012McQuayInternational•www.daikinmcquay.com•800.432.1342 IM1139Page52of52

Daikin McQuay Training and DevelopmentNow that you have made an investment in modern, efficient Daikin McQuay equipment, its care should be a high priority. For training information on all Daikin McQuay HVAC products, please visit us at www.daikinmcquay.com and click on Training, or call 540-248-9646 and ask for the Training Department.

WarrantyAll Daikin McQuay equipment is sold pursuant to its standard terms and conditions of sale, including Limited Product Warranty. Consult your local Daikin McQuay Representative for warranty details. Refer to Form 933-430285Y. To find your local Daikin McQuay Representative, go to www.daikinmcquay.com.

Aftermarket ServicesTo find your local parts office, visit www.daikinmcquay.com or call 800-37PARTS (800-377-2787). To find your local service office, visit www.daikinmcquay.com or call 800-432-1342.This document contains the most current product information as of this printing. For the most up-to-date product information, please go to www.daikinmcquay.com.

Products manufactured in an ISO certified facility.