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We reserve the right to modify technical specifications without prior notice.
83054200fUK

© ait-deutschland GmbH

LW 251A

Circuit diagram 1/3

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Summary of Contents for LW A Series

Page 1: ...o modify technical specifications without prior notice 83054200fUK ait deutschland GmbH Translation of the original instruction manual HEAT PUMPS Operating Manual Outdoor Installation AIR WATER UK LW...

Page 2: ...for the respective model This operating manual is intended only for persons as signed to work on or operate the unit Treat all con stituent parts confidentially The information contained herein is pro...

Page 3: ...AND BLEEDING THE SYSTEM 20 Water quality of the fill and additional water in hot water heating systems 20 INSULATING THE HYDRAULIC CONNECTIONS 22 COMMISSIONING 22 Safety temperature limiter 23 DISMAN...

Page 4: ...ermission of the manufacturer EC conformity The unit bears the CE mark of conformity EC declaration of conformity Safety The unit is operationally safe when used for the intend ed purpose The construc...

Page 5: ...air which is used as a source of heat must not contain any kind of corrosive components Components such as ammonia sulphur chlo rine salt sewer gas flue gases etc may cause damage leading to complete...

Page 6: ...hereafter refered to as HQR The HQR is mandatory with air water heat pumps With brine water and water water heat pumps a HQR may only be set up when a forward flow temperature of 35 C has been reache...

Page 7: ...regularly to ensure that the condensate can drain out of the unit unobstructed To this end regularly check the condensate pan in the unit and the condensate drain to ensure that they are clean free f...

Page 8: ...signs of dam age Check to make sure that delivery is complete Any defects or incorrect deliveries must be claimed immediately NOTICE Note the model Overview Technical data scope of delivery ACCESSORIE...

Page 9: ...Danger of tipping over during transport This can result in personal injury and dam age to the unit Take suitable precautionary measures to eliminate the danger of tipping ATTENTION Never use componen...

Page 10: ...251 and higher lifting with pipes is not possible Proceed as follows Insert the pipes through the holes in the frame on the switch cabinet side operator side LW 71 LW 81 NOTICE Set up the unit so tha...

Page 11: ...ns and place on the base Make sure that the frame of the unit is in full contact with the underlying surface LIFTING THE UNIT WITH A CRANE NOTICE Models LW 251 and higher must be lifted using a crane...

Page 12: ...ntinuing with any other work If you have not already done so remove lower fac ing panels on the switch cabinet and water connec tion side of the unit To do so loosen the two quick release screws on th...

Page 13: ...lower facing panels see Electrical connection work Heat pump side connection of control and sensor wires ATTENTION During extended interruptions in work close the unit with the lower facing panels In...

Page 14: ...CIRCUIT ATTENTION Connect the unit to the heating circuit accord ing to the hydraulic diagram for the respective model Hydraulic connection instructions NOTICE Check to make sure that the diameters an...

Page 15: ...meter of 50 mm For underlying surfaces that are permeable to water it is sufficient to insert the condensate pipe ver tically at least 90 cm into the ground If the condensate is discharged into draina...

Page 16: ...m Buffer tank The hydraulic connection of the heat pump requires a buffer tank in the heating circuit The required volume of the buffer tank is calculated based on the following for mula Vbuffer tank...

Page 17: ...nnection box for compressor LW 101 LW 121 LW 150H 1 Connection box for electric heating element 2 Connection box for compressor Electrical connections Observe the following when performing all work DA...

Page 18: ...ent 2 Connection box for compressor Connect power cable to the connection box Electric heating element with the LW 310A on site Close connection box Install power cable in a conduit as far as where it...

Page 19: ...rcuit diagrams for the respective model Screw control and sensor wires to the two connec tors on the back of the electric switch cabinet After connecting the control and sensor wires fas ten the elect...

Page 20: ...of the systems and the material diversity are also increasing which plays an important role especially in their corrosion behaviour The heating water not only affects the efficiency of the system but...

Page 21: ...ere is a threat of corrosion and aluminium is attacked without the presence of oxygen Therefore apart from softening the heating fill and additional water the heating water should also be appropriatel...

Page 22: ...inspection will prevent damage to the heat pump system that could be caused by incorrect installation work Make sure of the following Clockwise rotary field of the load power supply compressor Instal...

Page 23: ...current Electrical connections may be installed only by qualified electricians Before opening the unit disconnect the system from the power supply and secure it from being switched back on WARNING On...

Page 24: ...nit size Total weight kg Connections Heating circuit Heat source Refrigerant Refrigerant type Quantity kg Free cross section air channels mm Cross section condensate water length from unit mm m Electr...

Page 25: ...30 1 3 N PE 400V 50Hz C10 1 N PE 230V 50Hz B10 3 N PE 400V 50Hz B16 2 6 5 4 0 7 9 2 51 5 19 24 9 6 3 813512c LW 71A 8 1 3 9 7 7 3 0 7 2 3 5 8 8 4 3 5 7 2 8 20 58 60 20 35 50 58 3000 1000 1500 1900 0...

Page 26: ...nit size Total weight kg Connections Heating circuit Heat source Refrigerant Refrigerant type Quantity kg Free cross section air channels mm Cross section condensate water length from unit mm m Electr...

Page 27: ...V 50Hz B10 8 75 4 5 16 8 8 7 0 75 0 75 28 80 38 24 813507d LW 180A 19 6 3 9 10 1 4 2 18 7 3 3 9 8 3 4 17 2 l 3 6 9 5 l 3 8 21 2 4 0 10 3 4 5 14 1 I 2 8 7 3 l 2 9 20 50 20 35 A 7 60 52 60 5600 2000 380...

Page 28: ...nit size Total weight kg Connections Heating circuit Heat source Refrigerant Refrigerant type Quantity kg Free cross section air channels mm Cross section condensate water length from unit mm m Electr...

Page 29: ...E 230V 50Hz B10 3 N PE 400V 50Hz B16 2 8 5 8 0 7 12 64 30 24 9 6 3 813536b LW 180H A 19 3 3 7 10 9 3 8 19 7 3 1 10 4 3 2 17 5 3 3 9 0 3 4 21 8 4 0 12 5 4 4 14 8 2 8 7 5 2 8 13 6 1 6 7 2 1 6 20 60 20 3...

Page 30: ...4 6 8 10 12 14 16 18 20 15 10 5 0 5 10 15 20 25 30 35 Temp C 35 C 1VD 50 C 1VD COP 1 2 3 4 5 6 7 20 15 10 5 0 5 10 15 20 25 30 35 Temp C Pe kW 0 1 2 3 4 5 20 15 10 5 0 5 10 15 20 25 30 35 Temp C p bar...

Page 31: ...6 8 10 12 14 16 18 20 15 10 5 0 5 10 15 20 25 30 35 Temp C 35 C 1VD 50 C 1VD COP 1 2 3 4 5 6 7 20 15 10 5 0 5 10 15 20 25 30 35 Temp C Pe kW 0 1 2 3 4 5 20 15 10 5 0 5 10 15 20 25 30 35 Temp C p bar...

Page 32: ...8 10 12 14 16 18 20 20 15 10 5 0 5 10 15 20 25 30 35 Temp C 35 C 1VD 50 C 1VD COP 1 2 3 4 5 6 7 20 15 10 5 0 5 10 15 20 25 30 35 Temp C Pe kW 1 2 3 4 5 20 15 10 5 0 5 10 15 20 25 30 35 Temp C p bar 0...

Page 33: ...15 17 19 21 23 25 20 15 10 5 0 5 10 15 20 25 30 35 Temp C 35 C 1VD 50 C 1VD COP 1 2 3 4 5 6 7 20 15 10 5 0 5 10 15 20 25 30 35 Temp C Pe kW 2 3 4 5 6 20 15 10 5 0 5 10 15 20 25 30 35 Temp C p bar 0 0...

Page 34: ...0 22 24 26 28 30 20 15 10 5 0 5 10 15 20 25 30 35 Temp C 35 C 1VD 50 C 1VD COP 1 2 3 4 5 6 7 20 15 10 5 0 5 10 15 20 25 30 35 Temp C Pe kW 2 3 4 5 6 20 15 10 5 0 5 10 15 20 25 30 35 Temp C p bar 0 0 0...

Page 35: ...28 30 32 34 36 20 15 10 5 0 5 10 15 20 25 30 35 Temp C 35 C 1VD 50 C 1VD 35 C 2VD 50 C 2VD COP 1 2 3 4 5 6 7 20 15 10 5 0 5 10 15 20 25 30 35 Temp C Pe kW 2 3 4 5 6 7 8 9 10 20 15 10 5 0 5 10 15 20 2...

Page 36: ...40 42 44 46 48 20 15 10 5 0 5 10 15 20 25 30 35 Temp C 35 C 1VD 50 C 1VD 35 C 2VD 50 C 2VD COP 1 2 3 4 5 6 7 20 15 10 5 0 5 10 15 20 25 30 35 Temp C Pe kW 2 3 4 5 6 7 8 9 10 11 12 13 20 15 10 5 0 5 10...

Page 37: ...46 48 50 52 54 20 15 10 5 0 5 10 15 20 25 30 35 Temp C 35 C 1VD 50 C 1VD 35 C 2VD 50 C 2VD COP 1 2 3 4 5 6 7 20 15 10 5 0 5 10 15 20 25 30 35 Temp C Pe kW 2 3 4 5 6 7 8 9 10 11 12 13 20 15 10 5 0 5 10...

Page 38: ...10 5 0 5 10 15 20 25 30 35 Temp C Pe kW 0 1 2 3 4 5 6 7 8 20 15 10 5 0 5 10 15 20 25 30 35 Temp C p bar 0 0 0 1 0 2 0 3 0 4 0 5 0 0 1 0 2 0 3 0 4 0 m h p Legend UK823129L 170408 Volume flow heating wa...

Page 39: ...8 30 32 20 15 10 5 0 5 10 15 20 25 30 35 Temp C 35 C 1VD 50 C 1VD 64 C 1VD 35 C 2VD 50 C 2VD 64 C 2VD COP 1 2 3 4 5 6 20 15 10 5 0 5 10 15 20 25 30 35 Temp C Pe kW 0 1 2 3 4 5 6 7 8 9 10 20 15 10 5 0...

Page 40: ...1 52 42 38 37 38 36 32 31 32 LW140A 54 49 49 49 40 35 35 35 34 29 29 29 LW180A 55 51 51 51 41 37 37 37 35 31 31 31 LW251A 59 57 56 57 45 43 42 43 39 37 36 37 LW310A 61 58 59 59 47 44 45 45 41 38 39 39...

Page 41: ...09 Datum 17 3 2010 Legend UK819373 All dimensions in mm A Front view B Side view C Top view 1 Hot water outflow forward flow R1 2 Hot water inflow return flow R1 3 Condensate hose diameter 36 mm LE Ai...

Page 42: ...3 2 1 c b a Zust nderungstex PEP 023 2010 PEP 001 2013 M 999 2010 Schutzvermerk ISO 16016 beachten M 999 2010 PEP 001 2013 PEP 023 2010 PEP 026 2009 a b c d M 007 2014 Key UK819351d Subject to techni...

Page 43: ...ung 5 4 3 2 1 w a A B C D E F 4 3 2 1 Zust nderungstext Datum Von Ers Ge No Schutzvermerk ISO 16016 beachten DIN DM 17 3 2014 M 007 2014 Key UK819435 Subject to technical change without notice All dim...

Page 44: ...ichtung A B 5 4 3 2 1 A B C D E F 4 3 2 1 Zust nderungstex Schutzvermerk ISO 16016 beachten M 007 2014 Key UK819436 Subject to technical change without notice All dimensions in mm A Front view B Side...

Page 45: ...A B 5 4 3 2 1 w a A B C D E F 4 3 2 1 Zust nderungstext Datum Von Ers Ge No Schutzvermerk ISO 16016 beachten DIN DM 13 3 2014 M 007 2014 Key UK819437 Subject to technical change without notice All di...

Page 46: ...K819326b Subject to technical change without notice All dimensions in mm A Front view B Side view C Plan view section without fa ade and shrouds 1 Heating water outlet flow R 1 1 2 2 Heating water inl...

Page 47: ...19 Legend UK819374a All dimensions in mm A Front view C Top view Unit contour Minimum clearances 1 Recess in base 2 Local heat pipe for heating water forward return flow 3 Empty pipe for electric cab...

Page 48: ...Minimum clearances 1 Recess in base 2 Local heat pipe for heating water forward return flow 3 Empty pipe for electric cables minimum diameter 70mm 4 Condensate discharge minimum diameter 50mm 5 Water...

Page 49: ...w C Top view Minimum clearances 1 Recess in base 2 Local heat pipe for heating water forward return flow 3 Empty pipe for electric cables minimum diameter 70mm 4 Condensate discharge minimum diameter...

Page 50: ...view C Top view Minimum clearances 1 Recess in base 2 Local heat pipe for heating water forward return flow 3 Empty pipe for electric cables minimum diameter 70mm 4 Condensate discharge minimum diamet...

Page 51: ...view C Top view Minimum clearances 1 Recess in base 2 Local heat pipe for heating water forward return flow 3 Empty pipe for electric cables minimum diameter 70mm 4 Condensate discharge minimum diamet...

Page 52: ...t view C Top view Minimum clearances 1 Recess in base 2 Local heat pipe for heating water forward return flow 3 Empty pipe for electric cables minimum diameter 70mm 4 Condensate discharge minimum diam...

Page 53: ...er A2 X0 X4 3 External return sensor TRL PE Pump for mixing circuit 1 11 TBW 8 External sensor A3 ZUP BUP ZW2 A4 3 N PE 400V 50Hz 1 Information on fus es can be found in the technical data ZIP M X52 Z...

Page 54: ...nternally wired TB1 L1 TA A1 HUP Heat pump Cut out controller unit X52 PE 10 3 N PE 400V 50Hz 6 HUP UK831170 A2 X12 ZW2 SST 1 PE 12 11 X1 BUP X8 X8 A5 Distribution box in heat pump power supply output...

Page 55: ...discharge cooling mixer 1 open 3 Pump for mixing circuit 1 External sensor 1 Hot water circulating pump switching valve BUP A3 Plug on switch box heat pump control line Contactor electric heating elem...

Page 56: ...3 N PE 400V 50Hz X9 X10 Q5 E22 1 2 3 4 5 6 7 8 1 2 8 A B C D E F A B C D E F Blatt Bl 1 2 3 4 5 6 7 AIT 817332c Stromlaufplan ait deutschland GmbH M 029 2010 M 063 2013 M 020 2015 11 10 2010 30 08 20...

Page 57: ...at pump gauge line 817332 X10 F1 442Ohm Q1 Q3 X10 K10 STB Q5 F2 B10 X52 X52 R4 R5 R6 R3 X7 R10 R2 1 2 3 4 5 6 7 8 1 2 8 A B C D E F A B C D E F Blatt Bl 2 2 3 4 5 6 7 AIT 817332c Stromlaufplan ait deu...

Page 58: ...23 Compressor 1 Q5 Q1 Sump heating for compressor 1 G1 Function br ZW1 PE 3 Fan Distribution box power supply output compressor Terminal in switch box heat pump bl ZW1 E22 br Legend F3 3 Fan fuse 6 3...

Page 59: ...source outlet gauge TVL If installed heat source input gauge THG R3 R2 Encoding resistor 1800 Ohm Q1 R10 F2 Defrosting pressostat Defrosting valve STB Flow sensor MOT TRL NDP HD K10 R50 bl AV VD1 Volt...

Page 60: ...E22 Distribution box power supply output compressor M1 UK817333b PE bl Q5 4 2 4 3 Q1 Sump heating for compressor 1 G1 Contactor for compressor 1 Contactor for auxiliary heating 1 3 N PE 400V 50Hz 1 5...

Page 61: ...If installed heat source outlet gauge R3 If installed heat source input gauge TRL R4 R2 Q1 AEP F2 K10 Defrosting valve STB Flow sensor MOT R10 NDP Defrosting pressostat Contactor for compressor 1 VD1...

Page 62: ...essor 1 5 Q1 Starting current limit compressor 2 3 N PE 400V 50Hz Compressor 2 1 Compressor 1 Thermostat Sump heating for compressor 1 Distribution box power supply output compressor 3 4 X8 Contactor...

Page 63: ...TVL R5 THG If installed heat source outlet gauge PE F1 High pressure switch Auxiliary relay fan activation Flow sensor STB K3 K10 Contactor for auxiliary heating TRL Defrosting valve ASD VD1 R2 PE R3...

Page 64: ...0V 50Hz Thermostat Sump heating for compressor 2 Compressor 1 3 Sump heating for compressor 2 Sump heating for compressor 1 Q11 M1 1 4 3 PE Fan fuse 6 3 A 1 G1 S10 S11 VENT1 3 Q1 2 VD2 1 2 3 N PE 400V...

Page 65: ...gend Operating materials B10 VEN Terminal in switch box heat pump Function MOT R10 Q1 Contactor for compressor 1 VD1 X12 Plug on switch box heat pump control line UK817344b AEP K3 R6 THG X12 F2 HD X10...

Page 66: ...tion Plug on switch box heat pump control line HDP R10 X12 Terminal in switch box heat pump B10 Contactor for compressor 1 Low pressure switch Legend Q6 ZW1 R2 Defrosting pressostat NDP Operating mate...

Page 67: ...ompressor right hand rot field is mandatory 1 10 Star contactor fan 4 Network protection fan 2 PE 2 1 X8 7 5 2 VD2 Sump heating for compressor 2 VD2 Compressor 1 K5 M2 Fuses ventilator F4 F6 E5 Thermo...

Page 68: ...VD2 2 Plug on switch box heat pump gauge line TRL F1 2 Return sensor E1 PE TVL R5 CW R4 K2 Hot gas sensor TVL F2 R6 THG If installed heat source outlet gauge PE Y1 Function VD1 VEN MOT ASD F1 High pr...

Page 69: ...s mandatory F3 VENT1 VD1 1 gn ge Q3 Q1 Terminal in switch box heat pump 6 Fan br E22 Function 1 gn ge 5 3 3 3 N PE 400V 50Hz 2 1 1 ZW1 PE Contactor for compressor 1 5 E23 Legend ZW1 G1 X9 Contactor fo...

Page 70: ...itch box heat pump gauge line 2 High pressure switch R4 TWE Plug on switch box heat pump control line Solenoid valve gas injection compressor Hot gas thermostat liquid injection S12 1 If installed hea...

Page 71: ...21 M2 PE VD2 Starting current limit compressor 1 Contactor for auxiliary heating ZW1 E20 Nozzle heating fan 1 Contactor for compressor 1 G1 Auxiliary heating 3 N PE 400V 50Hz PE Q4 3 4 Thermostat Sump...

Page 72: ...PE X12 STB 2 2 F1 Q5 rt Hot gas thermostat liquid injection Star contactor fan HD VD2 N X12 K12 Contactor for compressor 2 UK817361b HDP 3 Plug on switch box heat pump gauge line ND B10 2 X52 Legend N...

Page 73: ...box heat pump THG R4 X52 THG R10 TVL 21 07 2014 M 008 2011 3 Achim Pfleger 10X589 a 3 3 Achim Pfleger 10 09 2010 LW180H A 817361 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 1...

Page 74: ...180 100 544 100 534 100 535 LW 140A LW 180 LW 180L 100 544 100 545 LW 180A 100 535 100 536 LW 180L LW 251 100 545 100 546 LW 180A LW 251A 100 536 LW 251 100 546 LW 251A 100 547 100 536 100 537 LW 251...

Page 75: ...75 We reserve the right to modify technical specifications without prior notice 83054200fUK ait deutschland GmbH...

Page 76: ......

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