Checking All Gas Connections For Tightness; Checking The Rotary Damper Setting - Viessmann Vitocrossal 300 Service Instructions Manual

Checking the filter element in the gas line (if installed) and replacing if
required

Checking all gas connections for tightness

Danger
Escaping gas leads to a risk of explosion.
Always carry out the following steps.
1. Insert new gaskets in all gas fittings that have been
opened and retighten them.
2. Open the gas shut-off valve.
3. Check the inlet joints of the gas train for tightness.
!
Please note
The use of leak detection spray can result in
faulty operation.
Leak detection spray must not come into
contact with electrical contacts.

Checking the rotary damper setting

Fig. 21
1. Open the gas shut-off valve.
Commissioning, inspection, maintenance
4. Start the burner (see page 9).
5. Check for tightness
■ Outlet joints of the gas train
Joint between the fan and the boiler flange
■
Joint between the fan and the Venturi pipe
■
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21