Installation InstructionsPHF3 Series

3 Phase (208/230 Volt)

PACKAGE HEAT PUMPS

TABLEOF CONTENTS

UNITDIMENSIONS ......................................... 2

SAFEINSTALLATIONREQUIREMENTS ......................... 3

LOCATINGTHE UNIT ....................................... 3

CLEARANCES ............................................ 3

INSTALLATION............................................ 3

GROUNDLEVELINSTALLATION .............................. 3

ROOFTOPINSTALLATION ................................... 3

HOISTING................................................ 4

DOWNFLOWCONVERSION .................................. 4

CONDENSATEDRAIN....................................... 4

ELECTRICALWIRING ................................... 4

DUCTWORK.......................................... 6

FILTERS ............................................. 6

AIRFLOWADJUSTMENT ................................ 7

START-UPPROCEDURES ............................... 7

SEQUENCEOF OPERATION.............................. 8

MAINTENANCE ....................................... 9

RIGGING ........................................... 11

WIRINGDIAGRAMS ................................ 12 - 13

_ CLIS_IEDUS

516 O1 1701 OO 8-10-O6

Printed in U.S.A.

Key: PHF3

3 TO 4 TON

See

Detail

46-1/2"

4112"

t

BASE PAN - CHASSIS

42-3/4"*

BASE RAIL

--" 12-1/4 i

19

SUPPLY 12-1/4

RETURN19I

1-9/162-3/16

3-3/4

27

46-1 !8"*

Condensate Drain

1-3/4

/I

2-3/16

UNIT SIZE 37A/2-1 B3to4 Ton 47-1/2

** Measured from inside to inside on base rails.

2. SAFE INSTALLATION REQUIREMENTS

FIRE AND ELECTRICAL SHOCK HAZARD

Failure to carefully read and follow all instructions in thismanual could result in furnace malfunction, personalinjury, death and/or property damage.

Installation or repairs made by unqualified persons canresult in hazards to you and others. Installation MUSTconform with local building codes or, in the absence oflocal codes, with the National Electrical CodeNFPA70-2005 or in Canada and CSA C.22.1 - CanadianElectrical Code Part 1.

The information contained in this manual is intended foruse by a qualified service technician familiar with safetyprocedures and equipped with the proper tools and testinstruments.

• Seal supply and return air ducts.

• Check to see that filters are installed correctly and arethe proper type an size.

NOTE: It is the personal responsibility and obligation of thecustomer to contact a qualified installer to ensure that theinstallation is adequate and conforms to governing codesand ordinances.

3. LOCATING THE UNIT

ACCESS PANELS

See Figure 1 for a general view of unit and location ofaccess panels.

CLEARANCES

The location MUST allow for minimum clearances andshould not be adjacent to a patio or other area where theunit's operating sound level might be objectionable.

NOTE: Units with available filter racks, need a 26" minimumclearance at side of unit for removal of filters. See chartbelow if unit is going to be placed near combustibleconstruction or materials.

While minimum clearances are acceptable for safetyreasons, they may not allow adequate air circulation aroundthe unit for proper operation in the cooling mode. Wheneverpossible, it is desirable to allow additional clearance,especially around the condenser inlet and dischargeopenings.

Do NOT install the unit in a location that will permitdischarged air from the condenser to recirculate to thecondenser inlet.

UNIT DAMAGE HAZARD

Failure to follow this caution may result in shorten lifeof unit components.

Do NOT operate unit in a corrosive atmospherecontaining chlorine, fluorine, or any other corrosivechemicals.

Minimum Clearances to Combustible Construction

Duct Side .................. 2" (6" on large chassis models)Condenser Inlet .................................... 30"

Blower Service (Side) ............................... 30"Control Service Side

(Front Combustion Air Inlet) .............. 30"Clearance between 3 Ft. Overhang

and Top of Unit ......................... 30"Combustible Base

(Wood or Class A, B or Croof covering material) ..................... O"

M,n,mumc,earanoos

_ 36"_ 3o" BlowerMotor

Supply Acees Panel

Return

Air Duct

_ 30"_

Internal Filter ControlBoxAccessPanel

INSTALLATIONNOTICE

Unit will NOT operate properly unless it is installed lev-el front to rear and side to side. The slope MUST NOT begreater than 1/8" per foot (10mm per meter). For side toside leveling, the drain side MUST always be lower.

Ground Level Installation

Ground level platform requirements:

- The unit MUST be situated to provide safe access forservicing.

- Platform may be made of either concrete or pressuretreated wood and MUST be level and strong enough tosupport unit weight.

- Position platform separate from building foundation.

- Install in well-drained area, with top surface of platformabove grade level.

- Platform must be high enough to allow for propercondensate trap installation and drainage. SeeFIGURE 2 and associated text for more informationabout condensate drainage.

Rooftop Installation

Rooftop platform requirements:

- The unit MUST be situated to provide safe access forservicing.

- The existing roof structure MUST be adequate tosupport the weight of the unit or the roof MUST be

W

reinforced.Check the weight of the unit in relation to the roofstructure and local building codes or ordinances andreinforce roof structure if necessary. See page 11 of thismanual for unit weights.

- Support for the unit MUST be level and strong enoughto carry unit weight. The support may consist of aplatform or a combination of platform and roof beams orcurb.

- See Hoisting section for hoisting instructions,

HOISTING

NOTE: All access panels MUST be secured in place beforehoisting.

The unit should be hoisted with two lifting slings. Attach theslings to rigging shackles that have been hooked throughholes in the base rail.

Two spreader bars MUST be placed on top of the unit toprotect the unit from damage from the pressure exerted bythe slings. Make sure that all equipment is adequate tohandle the weight ofthe unit and that the slings will not allowthe unit to shift.

Refer to FIGURE 9 on page 11of this manual for illustratedrigging instructions and weight chart.

DOWNFLOW CONVERSION

NOTE: In downflow applications with roof curbs or jackstands, the center rail under the unit must be removed. Thecenter rail is attached to the base rail with screws.

These units are adaptable to downflow use. To convert todownflow use, follow these steps:

1. Remove the blockoff plates found in the return aircompartment and the supply air compartment.

NOTE: Blockoff plate in the supply air compartment onlycontains one screw. If reinstalling plate, back part of plateMUST fit into mating dimples on flange. To reinstall, slantplate into dimples, then put plate into position and fastenwith screw.

2. Install the removed plates on the horizontal return andsupply air openings.

3. Install roof curb on the building. Be sure to follow alldirections included with curb and all applicable buildingcodes in your installation.

Condensate Drain

The condensate drain outlet is a 3/4" (19.1 mm) female PVCconnection located at the bottom on the left hand side (seeFIGURE 2).

The circulating blower creates a negative pressure on thecondensate drain line that can prevent the condensate fromdraining properly. To combat this negative pressure, a fieldsupplied condensate trap that will allow a standing columnof water of at least 2" (50.8mm) MUST be installed. Top ofoutlet from trap MUST be at least 1" (25.4mm) below top ofoutlet from unit. Install the trap as near to the unit aspossible for proper drainage,

A 3/4" (19.1 mm) drain line MUST be installed if required bylocal codes or if location of unit requires it. Run the drain lineto an open drain or other suitable disposal point.

FIGURE 2 1 Condensate Drain Information*

(25.4mm)

(2" (50.Smm)

3/4" (19.1mm)Female PVC

Fitting _

3/4" (19,1mm)Drain Line

* Condensate trap MUST be installed.

4. ELECTRICAL WIRING

ELECTRICAL SHOCK HAZARD.

80-31-32

Failure to follow this warning could result in personalinjury, death and/or property damage.

The unit cabinet must have an uninterrupted,unbroken electrical ground to minimize the possibilityof serious injury if an electrical fault should occur.This ground may consist of an electrical wireconnected to the unit ground lug in the controlcompartment, or conduit approved for electricalground when installed in accordance with NationalElectric Code (NEC) NFPA 70, National Fuel Gas CodeNFPA 54-2005/ANSI Z223.1-2005 and local electricalcodes. In Canada, follow Canadian Electrical CodeCSA (Canadian Standards Association) C22.1 andlocal electrical codes.

REDUCED EQUIPMENT LIFE HAZARD

Failure to follow these precautions could result indamage to the unit being installed.

1) Make all electrical connections in accordance withNational Electric code (NEC) NFPa 70 and local electricalcodes governing such wiring. In Canada, all electricalconnections must be in accordance with CSA standardC22.1, Canadian Electrical Code Part 1, and applicablelocal codes. Refer to unit wiring diagram.

2) Use only copper conductor for connectionsbetween field-supplied electrical disconnect switch andunit. DO NOT USE ALUMINUM WIRE.

3) Be sure that high-voltage power to unit is withinoperating voltage range indicated on unit rating plate.

4) Do not damage internal components when drillingthrough any panel to mount electrical hardware,conduit, etc. Consult local power company forcorrection of improper voltage and/or phase imbalance.

Disconnect Switch

The unit must have separate electrical service with afield-supplied, waterproof, disconnect switch mounted at,

141

orwithin sight from, the unit. Refer tothe unit rating plate formaximum fuse/circuit breaker size and minimum circuitamps (ampacity) for wire sizing.

Ground Connections

Do NOT complete line voltage connections until unit ispermanently grounded. All line voltage connections and theground connection MUST be made with copper wire.

A ground lug is installed in the control box area for theground connection. Use a copper conductor of theappropriate size from the unit to a grounded connection inthe electrical service panel or a properly driven andelectrically grounded ground rod. See warning above.

Line Voltage Wiring - (Wiring Diagrams page 12 & 13)

Connections for line voltage are made in the unit control boxarea. Refer to wiring diagram located on the Access panel.For access, remove the burner access panel.

1. Run the high voltage (L1, L2 and L3) wires and groundleads into the control box.

2. Connect ground lead to chassis ground connection.

3. Connect L1 to pressure lug connection 11 of thecompressor contactor.

4. Connect L2 to pressure lug connection 13 of thecompressor contactor.

5. Connect L3 to the bare Blue wire from the compressorpower plug, using a wire nut and insulate it with electrictape.

Converting 230V Units to 208V

To convert 230V units to 208V:

1. Turn electric power OFE

2. Remove the electrical access panel.3. Locate the 24V control transformer.

4. Remove wires from the terminal labeled "240V" on the24V control transformer and reconnect them to the208V terminal of the 24V control transformer.

5. Replace the electrical access panel.

Accessory Economizer Wiring

This unit has factory-routed wiring required for using anaccessory economizer. (Refer to product specificationsheets for an accessory economizer that is compatible withthis unit.)

The factory-routed economizer wiring consists of:

There are 8 wires in the low voltage connection area. Thesewires must be stripped and connected to thermostat and/orunit pigtail connections per the economizer accessoryinstallation instructions.

There are two gray wires with 1/4" quick connects wire-tiedto the indoor blower motor harness above the blowerhousing. These two gray wires must be connected to themixed-air sensor shipped with the accessory economizer.The mixed air sensor must be mounted per the economizeraccessory installation instructions.

There is a 12 pin plug connection above the return opening.The economizer accessory comes with two wire harnessesconnected with a 12 pin plug. Unplug these two harnessesand connect the one to the 12 pin plug connection foundabove the return opening. Discard the unused harness.Refer to the economizer accessory installation instructionsfor proper installation.

Thermostat / Low Voltage Wiring

Location of the thermostat has an important effect on homecomfort. FOLLOW THE THERMOSTAT INSTRUCTIONMANUAL FOR CORRECT LOCATION, MOUNTING, ANDWIRING.

For 3 to 3-1/2 Ton Models Only:

A single stage thermostat is required for proper operation.Thermostat must have the following terminals: "R", "W',"O', and "G'. Some electronic thermostats use low voltagefrom the unit for power for temperature display andprogramming. These electronic thermostats will have a'C"terminal. The outdoor unit has color-coded wires for easyconnection. Using wire nuts, follow Figure 3 for properconnections:

FIGURE 3 3 to 3-1/2 Ton Thermostat Connections

\ J

/-\t R',

\ .J ,,,_\

F?M.................................................................\ J

\J

\ ./

Thermostat and subbase Unit Control Power

For 4 Ton Models Only:

A two-stage thermostat is required for proper operation.Thermostat should have the following terminals: "R',"W/W1", "Y1 ", "O', and "G'. Some electronic thermostatsuse low voltage from the unit for power for temperaturedisplay and programming. These electronic thermostatswill have a "C" terminal. The outdoor unit has color-coded

wiresforeasyconnection.Usingwirenuts,followFigure4forproperconnections:

FIGURE 4 4 Ton Thermostat Connections

/ ',

\J

\ J

'\ j

_2" _ i PNK! )......................................................... ................. j / '_

\ j

Thermostat and subbase Unit Control Power

THERMOSTAT HEAT ANTICIPATOR

Some thermostats have an adjustable heat anticipator. Theheat anticipator prevents temperature overshoot in heatingmode. If the heat doesn't turn off until the set pointtemperature on the thermostat is exceeded, then theanticipator setting is too low. If the heat turns off before thethermostat reaches the set point temperature on thethermostat, then the anticipator setting is too high. Followthe thermostat instruction manual for proper adjustment ofthe heat anticipator.

Final Electrical Check

1. Make a final wiring check to be sure system is correctlywired. Inspect field installed wiring and the routing toensure that rubbing or chafing due to vibration will notOccur.

NOTE: Wiring MUST be installed so it is protected frompossible mechanical damage.

Ductwork sizing affects the discharge temperature, airflowvelocity, and efficiency of the system. Be sure to properlysize ductwork to the capacity of the unit and to the airflowrequirements of the conditioned space. Failure to properlysize ductwork can result in inadequate airflow and poorefficiency. Undersized ductwork may result in tripped limitcontrols and premature failure of compressors, motors andother components.

Ductwork Insulation

Ductwork installed outdoors must have a minimum 2" thickfiberglass "wrap" insulation and a weatherproof vaporbarrier installed around it. The insulation and vapor barriermust be protected against potential damage. Caulking,flashing, and other means of providing a permanentweather seal must be used.

Ductwork Connections

The use of flexible, non-combustible connectors betweenmain trunk ducts and supply and return air plenums ispermitted. If flexible connectors are used, they should beprotected from potential mechanical damage such aspunctures and tears.

NOTE: When connecting the supply and return plenums tothe unit, make sure that the plenums are sealed against theside casing of the unit and do not interfere with removal ofthe top of the unit.

FILTERS

All return air MUST pass through a filter before entering theunit. An electronic air cleaner, optional filter racks, or otheraccessible filter arrangement must be installed in the returnair ductwork. Minimum recommended filter sizes are listedin FIGURE 5 and are based on maximum face velocities of300 ft!min for disposable filters and 500 ft/min for washable(high velocity) filters. See figure 5 for filter sizes.

5. DUCTWORK

Ductwork Sizing

The maximum recommended velocity in trunk ducts is 1000feet per minute. The maximum recommended velocity inbranch ducts is 800 feet per minute.

REDUCED EQUIPMENT LIFE HAZARD

Failure to follow this caution may result in improperunit operation.

Do not operate the unit without a filter,

FIGURE 5 Filter Sizes

PHF3 Filter sizes

Model

PHF336PHF342PHF348

Disposable FiltersNominal Size (Qt_ Minimum Area

x w x d) (sq inches)2 x 15" x 20" 5762 x 18" x 20" 6722 x 20" x 20" 768

WashalSle-Fiiters

Nominal Size (Qty Minimum Areax w x d) (sq inches)

1 x 18" x 20" 3461 x 20" x 20" 4041 x 20" x 24" 461

6. AIRFLOW ADJUSTMENT

CIRCULATING AIR BLOWER SPEEDSBLOWERPERFORMANCE DATA

Model Number PHF336 PHF342

Speed Tap

Air Delivery in

CFM @ VaryingExternal Static

Pressure (in.

W.C.)

PHF348

Notes: Air Delivery @ listedexternal static pressre are taken at 230Voltswith Drycoit, nofilter and approved heater.

For wet coil add .05in. wc to Static Pressure measurement Notefor 208 Volts applications, reduce airflow by 15%.

FIGURE 6 Blower Tap Connections

Blower Speed Tap Settings

Model Rated Airflow High AirflowPHF336 Speed Tap 2 Speed Tap 3PHF342 Speed Tap 3 Speed Tap 4PHF348 Speed Tap 3 (Hi); 2 (Lo) Speed Tap 4 (Hi); 3 (Lo)

Verify that the proper blower speeds for heating and coolingare selected on the blower motor by removing the bloweraccess panel and inspecting the blower motor, The motorhas 4 speeds numbered "1", "2", "3", and "4", The wires forthe speed selection are as follows:

Red _ Heating

Black _ High Stage Cooling

Violet _ Low Stage Cooling (4 ton only)

Using the same speed for Heating and Cooling.

If the same speed is required for heating and high stagecooling the following procedure must be used:

1. Set Red wire on proper speed selection on blowermotor.

2. Remove Black wire from "COOL" (3 - 3.5 Ton models)or "HI" (4 Ton Model) on Blower Interface Board. Tapeend of Black lead using electrical tape.

3. Jumper the Red wire to both the "Heat" terminal andeither the "COOL" (3 - 3.5 Ton models) or "HI" (4 TonModels) terminal on the Blower Interface Board.

If the same speed is required for heating and low stagecooling (4 Ton model only), the following procedure must beused:

1. Set Red wire on proper speed selection on blowermotor.

2. Remove Violet wire from "LO" on Blower InterfaceBoard. Tape end of Violet lead using electrical tape.

3. Jumper the Red wire to both the "Heat" terminal and the"LO" terminal on the Blower Interface Board.

8. START-UP PROCEDURES

CHECK BEFORE STARTING

1. Check that the blower motor speed terminal block isrunning the correct heating and cooling speeds.

2. Check to see that clean, properly sized air filters areinstalled.

3. Replace all service access panels.

Check the unit's operation as outlined in the followinginstructions. If any unusual sparking, odors or unusualnoises are encountered, shut off electric powerimmediately. Recheck for wiring errors, or obstructions in ornear blower motors.

1. Set thermostat Heat-Cool selector to OFE

2. Set thermostat fan switch to AUTO.

3. Turn electric power ON. Nothing should start running.4. Set thermostat fan switch to ON.5. Reset thermostat fan switch to AUTO.

171

9. SEQUENCE OF OPERATION

ELECTRICAL SHOCK HAZARD.

Failure to follow this warning could result in personal

injury, death and/or property damage.

Turn off electric power supply at disconnect switch orservice panel before removing any access or service

panel from unit.

Cooling Operation (PHF336 -42)With a call for cooling (Y), the indoor fan energizesimmediately where as the contactor energizes after a 5minute time delay (incase of an initial start up) starting thecompressor and the outdoor fan motor. When the coolingdemand is met, (Y) de-energizes, shutting the compressor,indoor fan and the outdoor fan.

Cooling Operation (PHF348)These units utilize a 2 stage indoor thermostat. With a firststage call for cooling (Y1), the indoor fan (low stage)energizes immediately where as the contactor energizesafter a 5 minute time delay (incase of an initial start up)starting the compressor (low stage) and the outdoor fanmotor. If the low stage operation cannot satisfy the coolingdemand, the second stage cooling (Y2) energizesswitching the compressor into high stage cooling throughenergizing an internal solenoid valve inside the scrollcompressor and switching the indoor fan into high stage.When second stage cooling is satisfied, Y2 de-energizesswitching the compressor and the indoor fan into low stagecooling. When the low stage cooling demand is met, Y1de-energizes shutting the compressor, indoor fan and theoutdoor fan.

Heating Operation (PHF336 -42)With a call for heating (Y), the indoor fan (low stage)energizes immediately where as the contactor energizesafter a 5 minute time delay (incase of an initial start up)starting the compressor and the outdoor fan motor. If (Y)cannot satisfy the heating demand, the auxiliary or back upheat (W2) energizes. Incase of staged heating, W3 isenergized if the demand is not met. The highest airflowselected is run while the electric heat is in operation. Whenheating demand is met, W3, W2 and Y sequentiallyde-energize shutting the compressor, indoor fan and theoutdoor fan.

Heating Operation (PHF348)With a first stage call for heating (Y1), the indoor fan (lowstage) energizes immediately whereas the contactorenergizes after a 5 minute time delay (incase of an initialstart up) starting the compressor (low stage) and theoutdoor fan motor. If the low stage operation cannot satisfythe heating demand, the second stage heating (Y2)energizes switching the compressor into high stage heatingthrough energizing an internal solenoid valve inside thescroll compressor and switching the indoor fan into highstage. The auxiliary or back up heat is controlled by a thirdstage (W2). If the demand is not met, W3 is energized

incase of staged heating. When heating demand issatisfied, W3, W2 and Y2 sequentially de-energizeswitching the compressor and the indoor fan into low stageheating. When the low stage heating demand is met, Y1de-energizes shutting the compressor, indoor fan and theoutdoor fan.

Scroll Recycle Delay timerThe defrost board is equipped with a recycle delay timerwhich will delay the start of the compressor for 5 minutes inthe event of a power interruption. This sequences powerthroughout the system and prevents possible reverserotation of the scroll compressor. The output of the timercontrols the compressor contactor via a normally opencontact of K3 (T2). The timer starts the delay cycle when thecompressor is turned off by removal of "Y." If application of"Y" occurs before the timer has expired, the compressorcontactor will not be energized until the timer has expired.

CONTINUOUS FAN OPERATION

With the continuous Indoor fan option selected on thethermostat, G is continuously energized. Incase of 036 -042 units, the selected airflow setting is provided, tn case of048 units, the system runs low stage (Y1) airflow forcontinuous fan operation.

Defrost Mode

On a call for defrost:When the defrost sensor closes in the heating mode, thereis a 30, 60, 90 or 120 minute delay before the defrost modebegins. This delay is selected by the position of thedipswitches on the defrost board. Defrost interval timingcan be configured by selection switch 1 and 2 on thedipswitch per the following table: See Figure 7.

Switch 1 Switch 2 Time

ON OFF 30 Minutes

OFF ON 60 Minutes

OFF OFF 90 Minutes

ON ON 120 Minutes

NOTES:

1. The backup defrost terminate time is fixed at 10minutes.

2. The compressor recycle delay timer is 5 minutes.

3. The power interrupt response is minimum 17 msec. tomaximum 35 msec.

4. Quite shift compressor recycle delay is 30 seconds.

In normal defrost mode, the following sequence will occurafter the set delay:

1. Condenser fan off.

2. Reversing valve energized to cooling and auxiliaryelectric heat (W2) is energized.

3. After defrost sensor opens or a maximum of 10minutes; the condenser fan is energized (after 20seconds) and the reversing valve is de-energized tothe heat mode. Electric strip heat is also de-energized(after 15 seconds) except as required by thethermostat.

Should the system indoor thermostat be satisfiedduring the defrost cycle, the control will de-energize the

reversingvalveandauxiliaryheatoutputsand"hold"thedefrosttimeruntilthenextcallforheat,atwhichtimethedefrostcyclewillbecompleted.

Servicetesting: the pins marked"speed up" whenmomentarilyshortedtogether(for5seconds)andreleased,willdefeatthe5 minutesrecycledelaytimerandallowthecompressorcontactorto beimmediatelyenergized,thusforcingadefrostcycle.Terminationofthisforcedmodewillbebythedefrostthermostatorthe10minutebackuptimer,providedthe defrostthermostatwas closedwhenthedefrostwas "forces." If the defrostthermostatwasnotclosed,atthetimeofthe"forceddefrost,"thedefrostmodewillremainfor30secondsandthenterminate.

FIGURE7 Defrost Board& Dip Switches

Defrost Board

Dip Switch

10. MAINTENANCE

MONTHLY MAINTENANCE AND INSPECTIONCHECKS

Air Filters

REDUCED EQUIPMENT LIFE HAZARD

Failure to follow this cautions may result in damage tothe unit being installed.

Do not operate the unit without a filter,

Inspect filters at least monthly and replace or clean asrequired. Washable filters may be cleaned by soaking inmild detergent and rinsing with cold water. Replace filterswith the arrows on the side pointing in the direction of airflow. Dirty filters are the most common cause of inadequateheating or cooling performance, and of compressorfailures.

COOLING SEASON CHECKS (MONTHLY)

Condenser Coil

Keep the condenser inlet and outlet area clean and free ofleaves, grass clippings or other debris. Grass should bekept short in front of the condenser inlet. Shrubbery MUSTbe trimmed back so it is no closer than 30 inches to unit.

Condensate Drain

Check for condensate drainage. Clean as required.ANNUAL MAINTENANCE AND INSPECTION

ELECTRICAL SHOCK HAZARD.

Failure to follow this warning could result in personalinjury, death and/or property damage.

Turn off electric power supply at disconnect switch orservice panel before removing any access or servicepanel from unit.

The annual inspection should include cleaning as requiredto ensure efficient operation of the unit. To simplify access,remove all access panels and the top from the unit ifpossible.Condenser Fan Motor

Note: The condenser fan motor is permanently lubricated.No further lubrication is required. Do not attempt tolubricate the condenser fan motor.

Clean the surrounding area and the condenser andevaporator coils. Use caution to avoid damage to coil fins.BLOWER MOTOR ACCESS

Refer to Figure 1 for blower motor access panel andcompartment.

1. Remove the blower access panel2. Remove the three screws securing the blower motor

housing. If unit has a support bracket, remove the twoscrews securing the bracket.

3. Remove the two red wires attached to the limitswitchand remove the limit switch.

Motor removal and replacement

This method is required to replace or repair blower wheel,blower housing, or any unreachable components behindblower assembly.

1. Remove all screws around rim of unit top, (exceptscrews which are inaccessible because of proximity tostructure).

2. Raise unit top at corner of unit closest to blower at least2" and place a sturdy brace at least 2" thick between topand unit corner. A 2X4 piece of wood is ideal for this.

3. Disconnect all wires from housing and slide housing outof unit. Reverse this process to reinstall.

Circulating Air BlowerVisually inspect the blower wheel for accumulations of dirtor lint. Clean the compartment and the blower wheel. Ifaccumulation is excessive on blower wheel, or does noteasily remove, it will be necessary to remove the blowerassembly.

Note: The blower motor is permanently lubricated. Nofurther lubrication is required. Do not attempt to lubricatethe blower motor.

191

FIGURE 8 Control Box

Control Plate

Run Capacitor

_,.s-

DefrostBoard

MotorBoard

Capacitor Strap

Transformer

_J

Contactor

lol

F

R GG NG INSTRUCTIONS __fAiLURETOfOLLOW-_-SE_.STRUC-r,O_S

//_ WA_\ NO CAN RESULT IN PROPERTY DAMAGE,BoD,_,_u_R_oRDEAT_- ALL PANELS MUST BE IN PLACE WHEN RIGGING AND LIFTING.

- HOOK RIGGING SHACKLES THROUGH HOLES IN BASE RAIL, AS SHOWN IN DETAIL-A.

- USE SPREADER BARS, WHEN RIGGING, TO PREVENT UNIT DAMAGE.- BE SURE RIGGING AND SHACKLES ARE SUFFICIENT TO HANDLE WEIGHT LISTED BELOW.

DER BARS

DETAIL-A

HEIGHT_OR _

LENGTH WIDTH

Cabinet3 to 4 Ton

Max. Length Max. WidthIN MM IN MM

48 1219 48 1219

Max. HeightIN MM

38 965

Max. WeightLB KG400 182

38m,

el

C0m,

o

el

=s.

10. Wiring Diagrams

3 to 3-1/2 Ton Wiring DiagramF!E!O

SUPPLYPOW{R

UN[I ONLY L_!

MAXIMUM WIRE--

SIZE 2 AW6 L2,

%EQUIP GND -

BLU

B _r---------I

I I _ YL

BLK

"7I1IO ip J9876JWJ

2-Y--l-R--

R --REl-

y --Y_--

0 --ORR--

W2 --WNT--

SEE ECONOMIZERACCESSORY

INSTALLATIONINSTRUCTIONSFOR

PROPERWIRING

W3--v!o--

C --BRN

DR @ D5

BL_YEM

UNIT COMPONENT ARRANGEMEN

iNOOOR FANSECIION

sc!o_

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EQUIP

24V_oxSPLICE

BRN

I

LFGEND

SCI,,I_A'I]C20_/230-3-60

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PLUG

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SUPPLY

POWER

UNIT ONLY L_!

MAXIMUM WIRE--

SIZE 2 AWG L2--

--BLU

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FOR WIRING WITHELECTRIC HEATERS

SEE SCHEMATICON HEA'I_R ACCESSORY.

T

IO-P--9-0--8 -GY--7 -GY--6-W--

4s-_-3 -8R--

21l__

SEE ECONOMIZERACCESSORY

INSTALLATIONINSTRUCTIONSFOR

PROPERWIRING

OUTSOOR FAN5_CTION

G --GRN--

0 iORNi

W2 --WILT--

Y2 --PNN--

W3 --vlo-

C --BRN

_ COMPRESSORSECTION

FTI c s

UNIT COMPONENT ARRANGEMENT

INDO<)R FANSECTIO_

[]

COnTROl gOX AREA

[Q_IP

_VsoxSPL/C_

4 Ton Wiring DiagramCCil

BiK _ 0 _'LK_ DM @ DB

YI

8LK

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TRAN1

D ROS BOARD (_)B}

|IIII

dI I:GI:ND

RED--

BLU LPS BLU

SCHEMATIC208/230-3-60

DISCONNECI

J PER NEC

--2&V POWER

ENIRY

PLUG

COMP 80t

HRI (5 K_) BRF_--

--Wilt BR_J

[_ GRy_HR/,2,3& 4 _{20 _W BRN

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