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WPL 13,  WPL 18,  WPL 23
WPL 13 S,  WPL 16 S
Compact air/water heat pump
Installation instructions

The installation (water and electrical work) and commissioning, as well as the maintenance of 
this equipment, must only be carried out by an authorised qualified contractor in accordance with 
these instructions.

264757

Index

General 

2

1.1  Equipment description 

2

1.2  Function 

2

1.3  Correct operation 

2

1.4  Incorrect operation 

2

1.5  Regulations and standards 

2

1.6  Standard delivery and accessories 

2

Specification 

3

2.1  Specification WPL 13, 18 ,23 

3

2.2  Performance diagrams WPL 13, 18 ,23  4
2.3  Specification WPL 13 S, 16 S 

7

2.4  Performance diagrams WPL 13 S, 16 S  8

Installation, connection, sound emissions 
and commissioning 

10

3.1  Transport 

10

3.2  Installation location 

10

3.3  Noise emissions 

10

3.4  Installing the base unit 

11

3.5  Base unit assembly 

11

3.6  Heating water connection  

11

3.7  Circulation pump 

12

3.8  Condensate drain 

12

3.9  Buffer cylinder 

14

3.10  Second heat source 

14

3.11  Checking the fan 

14

3.12  Casing components 

15

3.13  Installing the air hoses 

15

4      Electrical connection 

16

Electrical connection WPL S (single 
phase) with WPAB  

23

Commissioning 

24

Operation and control 

24

Maintenance and cleaning 

24

8.1  Maintenance 

24

8.2  Cleaning 

24

Fault remedies 

25

 

Initial startup protocol 

26

 

Environment and recycling 

29

 

Guarantee 

29

Information for the owner of the
heat pump heating system

Keep these operating instructions safely and 
pass them on to any new user, should the 
equipment change hands. Let your contractor 
check their content in conjunction with re-
quired maintenance or repair work.

26_03_01_0181

Summary of Contents for WPL 13

Page 1: ...ioning 10 3 1 Transport 10 3 2 Installation location 10 3 3 Noise emissions 10 3 4 Installing the base unit 11 3 5 Base unit assembly 11 3 6 Heating water connection 11 3 7 Circulation pump 12 3 8 Condensate drain 12 3 9 Buffer cylinder 14 3 10 Second heat source 14 3 11 Checking the fan 14 3 12 Casing components 15 3 13 Installing the air hoses 15 4 Electrical connection 16 5 Electrical connectio...

Page 2: ...within the stated operating temperature range 1 4 Incorrect operation The installation location must be prepared by your contractor in line with section 3 2 Never operate the heat pump in areas at risk from explosions or outside the stated operating temperature range 1 5 Regulations and standards Observe the following regulations and stan dards during assembly and installation On the water side DI...

Page 3: ...n WNA max4 C 15 60 15 60 15 60 Electrical specification Mains supply Fuse A 16 gl 16 gl 16 gl Secondary heater DHC internal HS 2 Fuse A 16 gl 16 gl 16 gl Control circuit Fuse A 16 gl 16 gl 16 gl Protection EN 60529 DIN VDE 0470 IP 14 B IP 14 B IP 14 B Voltage Frequency compressor V Hz 3 PE 400 50 3 PE 400 50 3 PE 400 50 Voltage Frequency secondary heater DHC internal HS 2 V Hz 3 N PE 400 50 3 N PE...

Page 4: ...t diagram for heat pump WPL 13 Flow temperature 35 C Flow temperature 50 C Flow temperature 60 C Power consumption heat output kW Performance factor Inlet temperature of the WQA heat source system medium C 26_03_01_0180 ...

Page 5: ...am for heat pump WPL 18 Fig 1b Flow temperature 35 C Flow temperature 50 C Flow temperature 60 C Power consumption heat output kW Inlet temperature of the WQA heat source system medium C Performance factor 26_03_01_0179 ...

Page 6: ...intrittstemperatur des WQA Mediums C 25 20 Vorlauftemperatur 35 C Vorlauftemperatur 50 C Vorlauftemperatur 60 C Fig 1c Flow temperature 35 C Flow temperature 50 C Flow temperature 60 C Power consumption heat output kW Inlet temperature of the WQA heat source system medium C Performance factor 2 2 Output diagram for heat pump WPL 23 26_03_01_01_0182 ...

Page 7: ...x4 C 15 35 50 60 Electrical specification Mains supply Fuse A 25 gl 25 gl Secondary heater DHC internal HS 2 Fuse A 35 gl 35 gl Control circuit Fuse A 16 gl 16 gl Protection EN 60529 DIN VDE 0470 IP 14 B IP 14 B Voltage Frequency compressor V Hz 1 N PE 230 50 1 N PE 230 50 Voltage Frequency secondary heater DHC internal HS 2 V Hz 1 N PE 230 50 1 N PE 230 50 Voltage Frequency control circuit V Hz 1...

Page 8: ...ussentemperatur J A C Leistungsaufnahme P el kW Heizleistung Q H kW Leistungszahl e Aussentemperatur J A C C26_03_01_0873 C26_03_01_0874 Flow temperature 35 C Flow temperature 45 C Flow temperature 50 C Flow temperature 55 C Flow temperature 60 C Power consumption heat output kW Inlet temperature of the WQA heat source system medium C Performance factor 2 4 Output diagram for heat pump WPL 13 S In...

Page 9: ...r Aussentemperatur J A C Leistungsaufnahme P el kW Heizleistung Q H kW Leistungszahl e Aussentemperatur J A C C26_03_01_0875 C26_03_01_0876 2 4 Output diagram for heat pump WPL 16 S Flow temperature 35 C Flow temperature 45 C Flow temperature 50 C Flow temperature 55 C Flow temperature 60 C Flow temperature 35 C Flow temperature 45 C Flow temperature 50 C Flow temperature 55 C Flow temperature 60 ...

Page 10: ...eath the heat pump to enable water and electrical pipes cables to be connected from below Fig 4 and 7 Ensure a minimum wall clearance on the air expulsion side of 2 m Section 3 3 1 Observe Sound emissions with external installations 3 2 2 Special considerations in case of internal installation Substrate Concrete or screed Water and electrical pipes cables are routed into the heat pump from the top...

Page 11: ...ction when routing the electrical cables 3 6 Heating water connection 3 6 1 The heat pump heating system must be installed by a qualified contractor in accord ance with the water installation drawings which are part of the engineering documents With regard to the safety equipment of the heating system observe DIN EN 12828 plus TRD 721 safety equipment In dual mode operation the return water of the...

Page 12: ...6 Oxygen diffusion Corrosion can result on steel components when plastic underfloor heating system pipes are used which are not impermeable to oxy gen or in open heating systems The product of corrosion i e rusty sludge can settle inside the heat pump evaporator and can result in output reduction through reduc tion of cross section or in a shutdown being activated by the high pressure limiter Ther...

Page 13: ...ensate drain hose which terminates near the knock out on the floor plate to the right of the refrigeration drive In case of external installation route this hose after removing the knock out downwards out of the equipment Fig 7 For internal installations route the defrost water into a public sewer For this the condensate drain hose can be routed through the opening in the floor plate and frame and...

Page 14: ...e thermostatic valve s or zone valve s in the lead room e g in the living room or bathroom remove the head of thermostatic valves and match the heating curve at different outside temperatures e g 10 C and 10 C so that the required temperature results in the lead room The thermostatic valve s or zone valve s in the lead room should always be fully open Stiebel Eltron recommends that the heating cir...

Page 15: ...age 3 12 Casing installation 1 On the base unit remove eight quick release fittings at each point one at the top and bottom centre and keep safe for later use 2 Position the lid onto the equipment and secure with one quick release fitting at each side 3 Make all water and electrical connections to the equipment 4 Hook the side panels the front and back panel into the base unit and secure with resp...

Page 16: ...ig 12 Check the strain relief function Observe the operating instructions for the heat pump manager WPM 4 5 Circulation pump Connect the circulation pump for the heat utilisation side in accordance with the electri cal connection diagram Fig 15 and 18 or the engineering documents 4 6 Stand alone operation In emergencies this heat pump can also oper ate without the heat pump manager see page 25 How...

Page 17: ...rol Phase monitoring relay Connected load Terminal assignment 2 6 kW L1 N PE 3 0 kW L2 N PE 3 2 kW L3 N PE 5 6 kW L1 L2 N PE 5 8 kW L1 L3 N PE 6 2 kW L2 L3 N PE 8 8 kW L1 L2 L3 N PE X4 Terminal control Mains supply L N PE Control inputs 2 HS internal heat source DHC Ext ST Stand alone operation X2 Terminal LV H BUS high L Bus Low BUS Ground BUS not connected 26_03_01_0056 Electrical connection WPl...

Page 18: ... Fan contactor K5 Instantaneous water heater relay K6 Instantaneous water heater relay K7 Instantaneous water heater relay M1 Compressor motor M2 Motor fan N1 Defrost end control thermostat N2 Defrost pressure differential switch N3 Oil sump heater thermostat R1 Start Resistor R2 Start Resistor R3 Start Resistor X1 Terminals X2 LV terminal X3 Power supply X4 Terminals control X23 Earth block power...

Page 19: ...se L without OFF period Control phase L with OFF period N L3 L2 L1 PE N PE L 1 N PE 50Hz 230V Supply from the domestic meter 3 N PE 50Hz 400V Supply from the heat pump meter Heat Pump Manager WPM II External Flow Return DHW 2nd HS Source Mixer Pulse 1 3 Bus H Bus L Bus Bus Sensor 1 Sensor 2 Solar Mixer Mixer 2nd HS 2nd HS Circulation DHW HC 2 HC 1 Source Buffer 2 Buffer 1 Pump L ESC L Mains L Main...

Page 20: ...l assignment 3 0 kW L PE 3 2 kW L N PE 6 2 kW L L N PE X4 Terminal control Mains supply L N PE Control inputs 2 HS internal heat source DHC Ext ST Stand alone operation WPAB S ON N X2 Terminal LV H BUS High L Bus Low BUS Ground BUS not connected B1 Temp sensor HP flow X2 X4 X3 PE 1 N PE 230 50 1 N PE 230 50 1 N PE 230 50 Fig 16 C26_03_01_0829 Electrical connection WPl 13 S and WPL 16 S ...

Page 21: ...ter relay K6 Instantaneous water heater relay M1 Compressor motor M6 Motor fan N1 Defrost end control thermostat N2 Defrost pressure differential switch N3 Oil sump heater thermostat R4 Potentiometer Lüfterdrehzahl X1 Terminals X2 LV terminal X3 Power supply X4 Terminals control X23 Earth block power supply X27 Earth terminal block X28 Base luster terminal X29 Block for IWS 12 pole X30 Block for I...

Page 22: ...nager WPM II Time switch for power OFF periods Control phase L without OFF period Control phase L with OFF period Supply from the domestic meter Heat Pump Manager WPM II External Flow Return DHW 2nd HS Source Mixer Pulse 1 3 Bus H Bus L Bus Bus Sensor 1 Sensor 2 Solar Mixer Mixer 2nd HS 2nd HS Circulation DHW HC 2 HC 1 Source Buffer 2 Buffer 1 Pump L ESC L Mains L Mains N Bus cable Supply from the...

Page 23: ...nt of the WPL S Implement the wiring in accordance with Fig 19 The WPAB limits the starting current to the values stated in the specification When connecting the WPAB remove the jumper between R and RC When using the WPAB L terminal X3 on the compressor and L terminal X4 on the con troller must use the same phase and this should be protected by an RCD 26_03_01_0256_a Mains supply 1 N PE 230 V Heat...

Page 24: ...he WPM II to standby when the system is taken out of use This retains the safety functions designed to protect the system e g frost protection Drain the water side of the heat pump if there is a risk of frost and the heat pump has been completely shut down 8 Maintenance and cleaning 8 1 Maintenance The heat pump operates under automatic con trol and requires no specific maintenance If heat meters ...

Page 25: ...xed temperature The heat pump starts at 50 C and stops at 55 C The frost protection sen sor connected to the IWS at terminals sensor 1 2 is no used to sense the control magnitude i e frost protection and protection against freezing up during defrosting of an externally installed heat pump are now lost In addition remove the jumper be tween terminal X4 5 and X4 6 and connect 230 V to terminal X4 5 ...

Page 26: ...ffer cylinder yes no Buffer cylinder content 9 DHW heating independent of HP yes no with external heat exchanger yes no with internal heat exchanger yes no STE products types Third party products types 1 Customer s address 2 Installer 3 Building type Detached house Appartment block Apartment block Commercial Industrial Commercial Public building Single heat pump Cascade 4 Equipment type ID No Seri...

Page 27: ...rd party type Parameters set in acc with the control unit commissioning report 14 Power supply Cable type No of conductors Cross section Installed acc to VDE yes no Control cable heat pump Cable type No of conductors Cross section 10 Heat source Air Outside air Extract air Temperature min C max C Ground Ground probe No Internal pipe diameter Distributor yes no Depth of hole Hydraulic connections a...

Page 28: ...eat pump after 10 min operation Brine inlet water air C Brine outlet water air C Heat pump flow temp C Heat pump return temp C 17 System layout Place date 16 Tested to VDE 0701 Implemented yes no Values OK yes no Installer s signature ...

Page 29: ... to local regulations For guarantees please refer to the respecti ve terms and conditions of supply for your country The installation electrical connec tion and first operation of this appli ance should be carried out by a qualified installer The company does not accept liability for failure of any goods supplied which are not installed in accordance with the manufac turer s instructions Guarantee...

Page 30: ...30 Note ...

Page 31: ...31 Note ...

Page 32: ... 775 3887 Email info stiebel eltron ru www stiebel eltron ru Sweden STIEBEL ELTRON AB Friggagatan 5 SE 641 37 Katrineholm Tel 0150 487900 Fax 0150 48 7901 Email info stiebel eltron se www stiebel eltron se Switzerland STIEBEL ELTRON AG Netzibodenstr 23c CH 4133 Pratteln Tel 061 8169333 Fax 061 8 169344 Email info stiebel eltron ch www stiebel eltron ch Thailand STIEBEL ELTRON Asia Ltd 469 Moo 2 Ta...

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