Restarting The Heat Pump After Winter - AQUA FORTE ZWPA Serie Manuel D'installation Et D'utilisation

6.1 Heat pump winterizing
Important: failure to take the necessary precautions for winterizing can damage the heat pump, which
will invalidate the warranty.
The heat pump, filter pump, filter and conduits must be protected in areas where the temperature can drop
below the freezing point, Evacuate all water from the heat pump as follows:
√ Interrupt the electrical power supply to the heat pump
√ Close the water supply to the heat pump
√ Completely close valves 2 and 3 of the by-pass
√ Disconnect the water inlet and outlet coupler fittings of the heat pump and let the water drain out
of the unit.
√ Loosely reattach water inlet and outlet coupler fittings to the heat pump in order to prevent dirt
from setting into the conduits.
6.2 Restarting the pump after winter
If you purged your heat pump for winterizing, you should undertake the following steps to restart it in
spring:
√ Check first if there is no dirt in the conduits and if there are no structural problems
√ Check if the water inlet and outlet coupler fittings are adequately fastened to the heat pump
√ Start the filter pump to start the water flow to the heat pump. Set the by-pass again
√ Reconnect the electrical power supply to the heat pump and turn it ON.