In the winter months when the ambient temperature is lower than 3°C, a shut-down heat pump must be
winterised to avoid any frost damage.
Winterising in 4 steps
6.2 Winter storage
Step 1
Disconnect the heat pump
from the power supply.
Step 3
Unscrew the drain plug
and water pipes in order to
drain any water from the
heat pump.
Step 2
Open the By-Pass valve.
Close the inlet and outlet
valves.
Step 4
Screw back the drain plug
and pipes or block them
with rags so as to prevent
any foreign bodies from
getting into the circuit.
Finally, protect the pump
with its winter storage
cover.
WARNING
DISCONNECT THE POWER SUPPLY
If a circulating pump is servo-controlled by the heat pump, drain this also.
6. Maintenance and servicing
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