Operating instructions

39
Writing reports
Enter measurements taken during com-
missioning (described in the following)
into the reports from page 137
onwards.
Checking the refrigeration circuit for leaks
If there are any leaks, have the compact
heat pump checked by a refrigeration
engineer.
Filling and venting on the primary side
!
Please note
To prevent equipment damage,
fill the primary circuit before con-
necting the power supply.
1. Check the pre-charge pressure of the
expansion vessel (see page 41).
2. Fill the primary circuit with
Viessmann heat transfer medium
and vent.
Note
The system must be protected
against frost down to –15 °C.
3. Check the connections for possible
leaks. Replace faulty or displaced
gaskets.
Filling and venting on the secondary side
!
Please note
To prevent equipment damage,
protect electrical components on
the control unit door from escap-
ing liquids.
1. Open any on-site non-return valves
installed.
Commissioning, inspection, maintenance
Further details regarding the individual steps
5441 603 GB
Service