Opening The Heat Pump; Compiling Reports; Checking The Refrigerant Circuit For Leaks - Viessmann Vitocal 300-G Series 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 wiring chambers: For heat pump
control unit and power supplies, see page 21.
When working on the appliance, isolate the
■
system from the power supply, e.g. at a sepa-
rate MCB/fuse or a mains isolator. Check the
system is no longer 'live' and safeguard
against reconnection.
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.
All earth connectors must be reconnected.

Compiling reports

Enter the readings taken during commissioning
(described hereafter) into the reports on page 98
onwards.

Checking the refrigerant circuit for leaks

Danger
The refrigerant is a non-poisonous gas that dis-
places air. Unregulated escape of refrigerant in
enclosed spaces can lead to breathing difficul-
ties and suffocation.
■ Ensure adequate ventilation in enclosed
spaces.
■ Always observe regulations and guidelines on
handling this type of refrigerant.
Danger
Direct contact with refrigerant can be harmful to
skin.
Wear safety goggles and protective gloves when
working on the refrigerant circuit.
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.
48
!
Please note
Commissioning immediately after installation
can lead to appliance damage.
Wait at least 30 min between installing and
commissioning the appliance.
1. Remove the front panel in reverse order to the
description on page 43.
2. When work is complete, close the heat pump: See
page 43.
For commissioning the appliance, see also the
"Vitotronic 200 heat pump control unit" operating
instructions.
!
Please note
Refrigerant can escape when working on the
refrigerant circuit.
Work on the refrigerant circuit must only be car-
ried out by a certified contractor (in accordance
with EC 842/2006 and 303/2008).