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MICROPACK ‘ETM’ SERIES
HEATING & CHILLED SYSTEM PRESSURISATION UNITS
Datasheet No: 209Issue No: 8Date: 01/10/07group member
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ITEM MODEL/SERIES STANDARD/CLASS REMARKSQuality System Manufacturing ISO 9001:1994 Cert No. FM33090
Wiring Standards BSEN 60204: Part 1:1998Electro Magnetic Compatibility European Directive 89/336/EEC:1992
European Directive 89/392/EEC:1994Mains Water Breaktank 5 Litres Nominal Capacity
Mains Float Valve TB Mk.2 WRC.950 2008 0.5" Type 'AB' Air GapPipework Polyurethane Type TU
Pipe Fittings TUV 9205-8323-501Pumps ET 508 IMQ & VDE Standards
Pump Motors T.E. Encapsulated IP55, Class F Insulation Thermal Overload ProtectedControl Cabinet AQ-HM-S IP54
Interlocked Door Isolator LA2 & LA3 BS, UL, CSA, VDE, IECMicroprocessor Enhanced MPC or 2000Plus
Transducer Control 292 SS/Ceramic 8 Bar Max. Test Pressure
Construction Standards 'Micropack' ETM Series
HEATING & CHILLED WATERPRESSURISATION EQUIPMENT
MICROPACK ‘ETM’ SeriesMICROPROCESSOR CONTROLLED
GENERAL
The “Micropack” ETM Series system pressurisation unit is designed to maintain a minimum set pressure in a sealed heating or chilled water system.
Once the system has been initially filled via a quick filling loop, should the pressure fall below the cold fill pressure the ETM unit operates automatically to restore that pressure.
If high or low pressure conditions occur the boiler/chiller operation can be interrupted via thevolt-free contacts provided.
The unit is used in conjunction with a suitably sized expansion vessel from the “Aquatank” range of repla-cable diaphragm vessels to BS6144 (see table on page 3).
FEATURES of STANDARD MODEL 2ETM40
• Microprocessor/Transducer control (For long term accuracy & reliability)• Low water protection in break tank• Common Boiler / Chiller interlock fault relay (volt-free)• Mains water break tank with type ‘AB’ air gap to Water Supply Regulations 1999.
• Two pressurisation pumps• Compact wall mounted cabinet. (300 wide x 400 high x 170 deep)• Automatic alternation of duty pump (for even wear)• Automatic periodic pump pulsing (To prevent pump seizure)
2
• RS232 or 422/485 serial communications port• 8 Volt free signal relays (Functions can be varied to suit requirements)• Indicators for pump run, tripped, hand, off & auto• Additional analogue & digital inputs & outputs available if required
(Note, Both units are fully adjustable on site)
• High water protection in break tank• Keypad for ease of setting parameters• Illuminated comprehensive 2 line LCD display• Non volatile Eprom memory
FEATURES of ENHANCED MODEL 2ETM40-E (as above with addition of below)
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30°C
AM
BIENT 2
5% G
LYCOL
100
200
300
400
500
600
700
800
900
1000
2000
3000
4000
5000
1500
SYSTEM CONTENT IN LITRES
20 30 40 50 60 70 80 9010
0
200
300
400
50010
BOILER POWER IN KW FOR MEDIUM CONTENT SYSTEMS (10L/Kw)
10
20
30
40
50
60
708090
100
185
60V
R20
0VR
300V
R50
0VR
100V
R
EX
PA
NS
ION
VO
LUM
E O
F S
YS
TE
M IN
LIT
RE
S
30°C
0%
GLY
COL
6000
7000
8000
9000
1000
0
0 20V
R
82°C
(LTHW
) BOILE
R FLO
W T
EMPERATURE
170
50
110
All Dimensions in mm.
300
400
InterlockedDoor Isolator
Mains Power 20mm
System Connection15mm
Mains WaterSupply 15mm
Overflow
Approx. weight 12Kg.
8
370
9
35
333mm fixing centres
160
210
290
205
Warning 22mm
Interlocked Electrical SupplyIsolator and ON/OFF switch
flow restrictorFloat valve
Display1 Pair ofWall Brackets
DIMENSIONS
3
EXPANSION VESSEL SELECTION GUIDE
EXAMPLE:1250 Ltr LTHW system at 82oCSelect 200VR expansion vessel
D
H
DN
60 VR —› 300 VR
Type 25 HR 60 VR 100 VR 200 VR 300 VRNominal Content –litres 25 60 100 200 300
D mm 295 409 480 634 634
D1 mm 228 - - - -
H mm 485 740 840 980 1280
Water Connection DN BSP 1” 1” 1” 1 ¼” 1 ¼”
Dry Weight Kg 5.6 25 32 50 55
Max. working Pressure-bar 10 10 10 10 10
AQUATANK ‘VR’ Series:The diaphragm vessels for special appli-cations: Meets or exceeds EC norms for pressure vessels 97/23/EC; Max working pressure: 10 bar; Vessel Material: Steel RSt 37-2.; All vessel parts in contact with water are coated against corrosion; Diaphragm: Made of special high quality rubber material; Filling Valve: Schraeder-valve-type;Surface Treatment: Blue, durable powder coating finish.
H
DN
D1
D
25 HR
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N
Supply
Pressure fault
Control
TYPICAL BOILER/CHILLER INTERRUPT CIRCUIT
L N E 20 21 22
C NC NO
LNEE E NNP2
Power Supply240VAC 50Hz 2 Amp
Boiler/ChillerVolt Free240VAC 5A max non-inductive
Pum
p 1
Pum
p 2
Setpoint Adjust
High Pressure Setting
Boiler/ChillerInterlock Terminals
thermostat
Controlrelay
CNO NC
P1
MPC Microprocessor
STANDARD 2ETM40 ELECTRICAL CONNECTIONS
CONNECTION NOTESSafety Interrupt Volt free terminals 20/22 change state when either High or Low pressure is sensed on the system. The control relay de-energises in a fault condition.
SPECIFICATION FOR STANDARD “MICROPACK” 2ETM40 SERIES
Twin pump pressurisation unit suitable for a cold fill pressures of up to 3.0 bar (45 psi), complete with MPC microprocessor and 292 pressure transducer incorporating: combined high/low system pressure cut out single pole relay with “volt-free” contacts; digital pressure and faultdisplay; solid state drive for pressurisation pumps with thermal overload; automatic cut-out and reset on low water level in breaktank.5 litre mains water breaktank with 15mm float valve having type A air gap to BS6281:Part 1.All contained within powder coated sheet steel enclosure, with interlocked door isolator and interconnect-ing piping and wiring.Electrical supply: 240v. 1 Phase, 50 Hz, 2 Amp; Max Power: 0.07 Kw
4
OPERATIONAL/WARNING DISPLAY“L.P” = Low System Pressure, (Scrolls with pressure reading).“H.P” = High System Pressure, (Scrolls with pressure reading).“L.L” = Low Water Level in Mains Water Break Tank.
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ENHANCED 2ETM40-E ELECTRICAL CONNECTIONS
5
SPECIFICATION FOR MICROPACK 2ETM40-E (ENHANCED)As standard specification with additions: 2000Plus microprocessor control, two thermal overload protected pump motors, Fascia controls to provide 5 indicating lights for each pump condition or status:- run, tripped, hand, off auto.Fascia keypad to enter & set operational parameters, reset alarm & mute.Fascia 2 line LCD illuminated display to provide:
OPERATIONAL DATA DISPLAY: INFORMATION DISPLAYS:System Pressure Hours Run for Each PumpSystem Status Including Warnings Hours Elapsed Since Last ServiceAlarms With Type of Fault Parameter Settings DisplayPump/s Tripped High Pressure Cut-out SettingTransducer Fault Duty Pressure (Cold Fill Pressure)Boiler/s Cut-out Low Pressure Cut-out Setting Support Pump Delay Time
BMS VOLT FREE RELAY CONNECTIONS: * WARNING DISPLAYS:High System Pressure High Pressure ApproachLow System Pressure Low Pressure ApproachLow/High Water Level Low Water Level ApproachExcessive Frequency of Start/Demand Servicing ReminderPump Tripped/Failed Transducer FaultCommon Warning Signal for all Warning Displays*Boiler/Chiller Cut-out
PUMP 1
PUMP 2
Tripped
Running
Tripped
Running
OffAuto
HandOffAuto
Parameters
P
Reset
Mute
Enter
R
M
Hand
Set Operational Parameters or View Data
Alarm ResetAlarm Mute
Enter Operational Parameters
Audible Fault Alarm
Pump Run, Tripped, Hand, Off, Auto LightsPump 1
Pump 2
Optional Solid State Relay (SS) Output (break tank filling etc..)
8 VOLT FREE RELAYS FOR:Pump/s TrippedLow/High Water LevelBoiler/s Cut-outFrequency of StartsHigh System PressureLow System PressureTransducer FailureCommon Warning Display (see below)
A A D D A/D
Special Analogue/Digital (A/D) Input
2 Optional Digital Inputs5 Level Sensing Probes in Mains Water Break Tank
292 Pressure Transducer
Interconnecting Ribbon Cable
2 Line LCD (backlight) Display
Keypad For:-
Mother Board
Facia Board
FUS
E
FUS
E
SS
R
SS
R SS
R
SS
R
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WORK AT SITE
• Bolt unit to wall.• Connect 15mm mains water supply.• Fit 22mm over flow warning pipe.• Provide 2 amp 240 V AC 50Hz electrical supply and connect to unit.
PUMP 1
PUMP 2
PUMP 3
PUMP 4
Tripped
Running
Tripped
Running
Tripped
Running
Tripped
Running
HandOffAuto
HandOffAuto
HandOffAuto
HandOffAuto
AquaTech LimitedWivenhoe, Essex, CO7 9DR, UK.
Phone: 01206 825254
2000Plus Controller
Parameters
PReset
Mute
Enter
R
M
• Wire boiler/chiller control to terminals. • Connect MICROPACK ETM unit to system.• Fill system via quick-filling loop.• CAUTION: Test pressure must not exceed 8.0 bar (115 psi)
Main Heating Return Header
2 Amp, 240V AC Fused Spur Mains Supply2ETM40
‘Micropack’ Pressurisation Unit
Lockshield Isolating Valve
15 mm Incoming Mains Water Supply
AquaTank Dia-phragm Expan-
sion Vessel(Floor Standing)
Drain Cock
22mm Overflow to Drain
Air Charg-ing Valve
Isolating Valveand Union
Please Note:All pipework & valves are supplied and fitted by contractor.
Use intermediate cooling vessel if flow exceeds 90oC.
INSTALLATION DIAGRAM OF AN AQUATECH MICROPACK UNIT
Connection to un-derside of return header on suction side of circulator pumps
For connection size see Aqua-tank Vessel Table, page 3
The information in this specification is correct at time of issue; as AquaTech Pressmain design and development programmes are continuous, we reserve the right to make any changes to this specification without prior notice.
Leaders in the design, manufacture and assembly of packaged fluid pumping equipment and control systems.Applications: Cold Water Supply; Fire Fighting; Heating & Chilled System Pressurisation; Tank Level Monitoring.
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