OPERATION
SETTINGS
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The appliance is equipped with an electric emergency/booster
heater (DHC). In mono mode, the electric emergency/booster
heater is activated when the dual mode point can no longer be
maintained, in order to safeguard heating operation and to pro-
vide high DHW temperatures. In such cases, the electric emer-
gency/booster heater is activated in mono energetic operation as
a booster heater.
Further features
- Suitable for underfloor and radiator heating
- Low temperature heating systems preferred
- Still extracts heat from the outdoor air at – 20°C outside
temperature
- Corrosion-protected, external casing made from hot-dipped
galvanised sheet steel plus stove-enamelled finish
- Comprises all components required for operation and all
safety equipment
- Filled with non-combustible safety refrigerant
Note
To control the heating system, the WPMII heat pump
manager is required.
3.1 Function
Heating
Heat is extracted from the outdoor air via the heat exchanger
(evaporator) on the air side. The refrigerant evaporates and is
compressed with a compressor. Electrical energy is necessary for
this process.
The refrigerant is then at a higher temperature level and transfers
the heat drawn from the air to the heating system via an additional
heat exchanger (condenser). During this process, the refrigerant
expands and the cycle begins again.
At air temperatures below approx. 7°C, the humidity in the air
condenses as hoarfrost on the evaporator fins. This hoarfrost is
automatically defrosted. Water created from this defrosting pro-
cess collects in the defrost pan and is drained off via a hose.
In the defrost cycle, the fan is switched OFF and the heat pump
circuit is reversed. The heat required for defrosting is drawn from
the buffer cylinder or heating circuit. The heat pump automatically
reverts to heating mode at the end of the defrost cycle.
Cooling
Rooms are cooled by reversing the heat pump circuit. Heat is
extracted from the heating water and the evaporator transfers
this heat to the outdoor air.
4. Settings
The appliance is controlled with the heat pump manager and re-
quires no special operation.
Please observe the heat pump manager operating and instal-
lation instructions.
5. Maintenance and care
!
Damage to the appliance and environment
Maintenance work, such as checking the electrical safety,
must only be carried out by a qualified contractor.
Protect the appliance from dust and dirt ingress dur-
ing building work.
A damp cloth is sufficient for cleaning all plastic and sheet
metal parts. Never use abrasive or corrosive cleaning agents.
Every month, check that the condensate drain is working
correctly (visual inspection). When doing so, check whether
water is collecting below or next to the appliance. Observe
chapter "Troubleshooting".
We recommend an annual inspection (to establish the current con-
dition of the system), and maintenance by a contractor if required
(to return the system to its original condition).
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