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OPERATION AND INSTALLATION Air | water heat pump » WPL 15 AS » WPL 15 ACS » WPL 20 A » WPL 20 AC » WPL 25 A » WPL 25 AS » WPL 25 AC » WPL 25 ACS...
CONTENTS SPECIAL INFORMATION Commissioning ��������������������������������������������� 20 12.1 Checks before commissioning�������������������������������� 20 OPERATION 12.2 Using the appliance with an external second heat General information �����������������������������������������3 generator ��������������������������������������������������������� 20 Safety instructions ����������������������������������������������� 3 12.3 Settings ����������������������������������������������������������� 20 Other symbols in this documentation ����������������������� 4 12.4 Operation and control �����������������������������������������...
SPECIAL INFORMATION | OPERATION General information SPECIAL INFORMATION OPERATION - The appliance may be used by children aged 8 General information and up and persons with reduced physical, sen- sory or mental capabilities or a lack of experience The chapters “Special Information” and “Operation” are intended for both the user and qualified contractors.
OPERATION Safety Other symbols in this documentation Safety Note Intended use General information is identified by the symbol shown Observe the application limits listed in chapter "Specification / on the left. Data table". f Read these texts carefully. This appliance is intended for domestic use. It can be used safely by untrained persons.
OPERATION Appliance description Appliance description The heat pump automatically reverts to heating mode at the end of the defrost cycle. Properties Material losses The appliance is a heating heat pump for outdoor installation that In dual mode operation, the return water of the second operates as an air | water heat pump.
OPERATION Maintenance and care Maintenance and care Troubleshooting Fault Cause Remedy Material losses There is no hot No power at the appliance. Check the fuses/MCBs in Maintenance work, such as checking the electrical safety, water or the heat- your fuse box/distribution must only be carried out by a qualified contractor.
INSTALLATION Safety INSTALLATION Preparations The appliance is designed for siting in front of a wall. Observe the minimum clearances. If the appliance is installed in an open space or on a roof, protect the air intake side. Do this by erecting a wall Safety to shield it against the wind.
INSTALLATION Preparations Minimum clearances Siting Note If the condensate drain hose is not laid with frost protec- tion or is exposed to severe weather conditions, instal- lation of a ribbon heater is recommended both with the plinth and the wall mounting support. 9.4.1 Example: Pipe routing above ground or mounting bracket MK 1 - The substrate must be horizontal, level, solid and permanent.
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INSTALLATION Preparations WPL 20 A | WPL 20 AC | WPL 25 A | WPL 25 AS | WPL 25 AC | WPL 25 ACS 1500 f Hook two brackets respectively into the lateral slots on the front and back. Ensure you are using the correct brackets for the left and right hand slots respectively. f Position the brackets so that the groove on the bracket is hooked into the appliance.
INSTALLATION Preparations 9.4.2 Example: T-support SK-WPL Note To prevent disturbance due to structure-borne noise transmission, never install the wall mounting bracket on the external walls of living areas or bedrooms. f Install the wall mounting bracket, for example, on a garage wall.
2.5 mm² for routing above the surface Note (single phase) 4.0 mm² for routing through a wall The appliance can be secured to a foundation with screws WPL 15 AS WPL 15 ACS as additional protection against tipping over. 1x C 35 A Heat pump 6.0 mm²...
INSTALLATION Installation 10.4 Flow and return connection Making the push-fit connection The connector must be in its relaxed position before the pipe is Material losses inserted. In this position, there is a small gap between the screw Insulate the heating flow and return lines for cooling cap and main body.
INSTALLATION Installation 10.6 Oxygen diffusion 10.7.2 Venting the heating system Material losses Avoid open heating systems and plastic pipes in under- floor heating systems which are permeable to oxygen. In underfloor heating systems with plastic pipes that are per- meable to oxygen and in open vented heating systems, oxygen diffusion may lead to corrosion on the steel components of the heating system (e.g.
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Number of cir- Lead room Number of cir- floor area cuits floor area cuits m² n x m m² n x m WPL 15 AS 3x70 2x70 WPL 15 ACS 3x70 2x70 WPL 20 A 1000 4x70 3x70 WPL 20 AC...
INSTALLATION Power supply 10.10 Condensate drain 11. Power supply A condensate drain connector is factory fitted to the defrost pan WARNING Electrocution to enable any condensate that may form to drain off. f Before any work, isolate the appliance from the power supply at the control panel.
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INSTALLATION Power supply f Connect the electric emergency/booster heater if you want to utilise the following appliance functions: Appliance func- Effect of the electric emergency/booster tion heater Mono energetic op- If the heat pump cannot reach the dual mode point, the eration electric emergency/booster heater ensures both the heating operation and the provision of high DHW tem-...
INSTALLATION Power supply 11.3 Power connection WPL 25 AS | WPL 25 ACS Closing the wiring chamber X5 / DHC X3 / WP X4 / Steuerung 1/N/PE~230/50 1/N/PE~230/50 1/N/PE~230/50 C 32A C 36A C 16A 3,0 kW 3,2 kW N PE 6,2 kW N PE 1 Serrated washer 2 Screw f Secure the cover with the screw and serrated washer.
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INSTALLATION Power supply Closing the wiring chamber Electrical connection for ribbon heater Power supply: L, N, PE f Position the cover on the appliance. f Secure the cover with the four screws. www.stiebel-eltron.com WPL A | WPL AC | WPL AS | WPL ACS |...
INSTALLATION Commissioning 12. Commissioning A WPM heat pump manager is required to operate the appliance. All necessary adjustments prior to and during operation are made on this device. Only qualified contractors may carry out the adjustments on the heat pump manager commissioning report, commission the ap- pliance and instruct the owner in its use.
INSTALLATION Maintenance 12.4 Operation and control Standard values to begin with: Parameter Underfloor heating Radiator heating Material losses system system Never interrupt the power supply, even outside the heat- Heating curve ing season. The system's active frost protection is not Control response time guaranteed if the power supply is interrupted.
INSTALLATION Troubleshooting 14. Troubleshooting WARNING Electrocution f Before any work, isolate the appliance from the power supply at the control panel. Following isolation from the mains supply, parts of the appliance may remain live for up to 2 minutes since the capacitors still have to discharge into the inverter.
INSTALLATION Troubleshooting Compressor mode with an external second heat generator 14.1.1 Closing the wiring chamber Damage to the appliance and environment In this case, do not connect the electric emergency/boost- er heater. If the appliance is operated in dual mode with an external second heat source, set the DIP switch as follows: f Set the DIP switch as follows.
INSTALLATION Troubleshooting 14.5 Fan noise Faults indicated by the red LED: - High pressure fault The heat pump draws heat from the outdoor air. This causes the - Low pressure fault outdoor air to cool down. At outside temperatures of 0 °C to 8 °C, the air may be cooled to below freezing point.
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INSTALLATION Troubleshooting www.stiebel-eltron.com WPL A | WPL AC | WPL AS | WPL ACS |...
INSTALLATION Specification 15.2 Wiring diagram for WPL 15 AS | WPL 15 ACS | WPL 25 AS | WPL 25 ACS (single-phase) X5 Netz DHC X3 Netz WP X4 Netz Steuerung ON ERR L X27/2 X27/1 X27/2 X27/8 FROM AC TO DRIVE Rohrbegleitheizung Abtauen X27/7 > p N PE DHC1 T > DHC2 W PE Ölsumpfheizung...
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INSTALLATION Specification X2 Busanschluss WP “+” X27/2 Lüfter Drehz. Lüfter +10V Lüfter 0...10V Lüfter GND Heizungsrücklauf Außenluft Verdichtereintritt Verdampferaustritt hrbegleitheizung Einspritzung tauen CAN GND CAN L CAN H Heizungsvorlauf +12...+18V ND 4...20mA (IWS III) HD 4...20mA MD 4...20mA sumpfheizung Heißgas +12V X8 / F4 Phase 1...
INSTALLATION Specification 15.4 Output diagrams WPL 15 AS | WPL 15 ACS Heating output X Outside temperature [°C] Y Heating output [kW] 1 max. W55 2 max. W45 3 max. W35 4 min. W55 5 min. W45 6 min. W35 DHW output X Outside temperature [°C] Y DHW output [kW] 1 max.
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INSTALLATION Specification Cooling capacity X Flow temperature [°C] Y Cooling capacity [kW] 1 max. A35 2 min. A35 www.stiebel-eltron.com WPL A | WPL AC | WPL AS | WPL ACS |...
INSTALLATION Specification 15.5 Output diagrams WPL 20 A | WPL 20 AC Heating output X Outside temperature [°C] Y Heating output [kW] 1 max. W55 2 max. W45 3 max. W35 4 min. W55 5 min. W45 6 min. W35 DHW output X Outside temperature [°C] Y DHW output [kW] 1 max.
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INSTALLATION Specification Cooling capacity X Flow temperature [°C] Y Cooling capacity [kW] 1 max. A35 2 min. A35 www.stiebel-eltron.com WPL A | WPL AC | WPL AS | WPL ACS |...
INSTALLATION Specification 15.6 Output diagrams WPL 25 A | WPL 25 AC | WPL 25 AS | WPL 25 ACS Heating output diagram X Outside temperature [°C] Y Heating output [kW] 1 max. W55 2 max. W45 3 max. W35 4 min. W55 5 min. W45 6 min. W35 DHW output diagram X Outside temperature [°C] Y DHW output [kW] 1 max.
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INSTALLATION Specification Cooling capacity diagram X Flow temperature [°C] Y Cooling capacity [kW] 1 max. A35 2 min. A35 www.stiebel-eltron.com WPL A | WPL AC | WPL AS | WPL ACS |...
INSTALLATION Specification 15.7 Data table The performance data apply for new appliances with clean heat exchangers. The power consumption figures for the integral auxiliary drives are maximum values and may vary subject to operating point. The power consumption of the integral auxiliary drives is included in the output details of the heat pump (to EN 14511). WPL 15 WPL 15 WPL 20 A...
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INSTALLATION | GUARANTEE | ENVIRONMENT AND RECYCLING Specification WPL 15 WPL 15 WPL 20 A WPL 20 WPL 25 A WPL 25 WPL 25 WPL 25 Energy data Energy efficiency class A+/A++ A++/A++ A++/A++ A++/A++ A++/A++ A++/A++ A++/A++ A++/A++ Electrical data Rated voltage, compressor Rated voltage, controller Rated voltage, emergency/booster heater...
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