53
Dealing with malfunctions
If the operating disturbance cannot be rectified by means of the above,
an installation engineer should be called.
Close the shut-off valves in heating medium system.
open the drain valve ( 73 ). A small amount of
water runs out, however, to fully empty the heating
medium side requires the connector that joins the
heating medium side and the connection on the heat
pump VB-flow to be loosened a little to allow air to
enter so the remaining water can run out. When the
heating medium is empty the requisite service can be
carried out.
Draining, heat medium side
First,close the drain valve ( 73 ). And then open the
drain valve ( 72 ). When the water tank is empty the
requisite service can be carried out.
Draining, water tank
The drain-pipe for the chassis is already assembled in
advance before leaving the factory. The consumer is
required to place the hose at appropriate location.
Draining, the chassis
74
75
And then close the water tank drain valve (72) . and
73
44
72
