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

Commissioning, inspection, maintenance
Further details regarding the individual steps

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 cor-
rect seating and realign if nec-
essary.

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 handle.
2. Check the mixer for ease of opera-
tion.
18
(cont.)
2. Mount the gas supply pipe and check
for tightness.
3. Check the mixer for leaks. Replace
the O-rings if the mixer leaks.
4. Snap the motorised lever into place.