Closing The Boiler Door; Checking The Thermal Insulation; Checking The Mixer For Ease Of Operation And Leaks - Viessmann Vitocrossal 300 Service Instructions For Contractors

Commissioning, inspection, maintenance
Cleaning the sight glass in the boiler door
A
Fig. 5
Check gaskets and hose connection
A
Danger
Leaks can result in a risk of poisoning through
escaping gas.
Check gaskets carefully.

Closing the boiler door

1. Tighten the screws on the boiler door evenly and
diagonally.
Torque 10 Nm
Danger
Leaks can result in a risk of poisoning
through escaping gas.
Prior to commissioning, check the boiler
door gasket for correct seating and realign if
necessary.

Checking the thermal insulation

Check the thermal insulation for fit and realign if
required.

Checking the mixer for ease of operation and leaks

1. Remove the motorised lever from the mixer han-
dle.
2. Check the mixer for ease of operation.
14
B
for leaks.
B
2. Mount the gas supply pipe and check for tightness.
3. Check the mixer for leaks. In the event of a leak,
replace the O-rings.
4. Click the motorised lever into place.
(cont.)