Opening The Heat Pump; Compiling Reports; Checking The Refrigerant Circuit For Leaks; Filling And Venting On The Primary Side - Viessmann VITOCAL 350-G PRO Installation And Service Instructions Manual

Commissioning, inspection, maintenance

Opening the heat pump

Danger
Contact with live components can lead to seri-
ous injury from electric current.
■ Never touch the terminal areas for the heat
pump control unit or power supply; see
page 36.
When working on the appliance, isolate the
■
system from the power supply, e.g. at a sepa-
rate fuse or mains isolator. Check the system
is no longer live and safeguard against recon-
nection.
Danger
The absence of component earthing can result
in serious injury from electrical current and in
component damage in the event of an electrical
fault.
Restore all protective conductor connections.
!
Please note
Commissioning immediately after installation
can lead to appliance damage.
Wait at least 30 min between installing and
commissioning the appliance.

Compiling reports

Enter readings taken during commissioning (described
below) into the reports.

Checking the refrigerant circuit for leaks

Check the floor area, valves and all visible solder joints
for traces of oil.
Note
Traces of oil indicate a leak in the refrigerant circuit.
Have your heat pump checked over by a refrigeration
engineer.

Filling and venting on the primary side

!
Please note
Commissioning when the primary circuit is
empty causes appliance damage.
Fill and vent the primary circuit before connect-
ing the power supply.
1. Check the Victaulic connections in the heat pump
for leaks. The Victaulic couplings must be engaged
with a positive interlock and no gaps.
2. Check the pre-charge pressure of the expansion
vessel.
56
Note
Work on the refrigerant circuit may only be carried out
by qualified refrigeration engineers. Work on electrical
equipment may only be carried out by qualified electri-
cians.
1. Remove the front panel and top panel; see
page 61.
2. When work is complete, close the heat pump; see
page 53.
For commissioning this appliance, see also the
operating instructions.