8
Frost Protection
The plate heat exchanger, the piping and the hydraulic
pump can be damaged by frost, despite the built-in anti-
freeze protection of the unit.
In frost prone areas refer to installation location instructions.
To avoid freezing-up of the water contained in the
system, one of the precautions must be taken during
winter:
1. Drain the water from the system, using the drains in
the lower part of the unit.
2. Add the correct percentage of glycol antifreeze to the
water circuit.
3. The power to the unit must be on all the time so unit
can start circulation pump and auxiliary heater for anti-
freeze protection.
Important
The pipe work must be flushed before the heat pump is connected, so that any contaminants do not damage the
components parts.
The water pressure in the evaporator can not exceed 500 kPa or 72 PSI.
