Check Gas Pipes And Fittings For Leaks; Reinstall Burner - Viessmann VITODENS 100-W WB1B Series Installation And Service Instructions Manual

Steps
(continued)
Start-up and Maintenance
Start-up and Maintenance
Start-up and Maintenance
Fig. 63
Initial Start-up, Inspection and Maintenance

21. Check gas pipes and fittings for leaks

WARNING
The gas supply piping must be leak
tested before placing the boiler in
operation.

22. Reinstall burner

CAUTION
Ensure all joints of gas line are
pressure tight and that gas valves
do not leak when under normal
operating pressure (use approved
leak detection liquid). Do not use
open flame.
1. Replace electrical cables from fan
motor A, mount burner, and
diagonally tighten 4 Torx T-30
screws F to a torque of 4 Nm /
3 lb.ft.
2. Insert new supplied gasket and
tighten the fitting E on the gas
connection pipe to a torque of
15 Nm / 11 lb.ft.
3. Plug the Venturi extension D into
the fan.
4. Replace electrical cables from gas
valve B, and electrode block C.
5. Open gas shutoff valve and switch
on power supply.
6. Check the gas connection for
tightness.
7. Install front panel, as shown on
page 55.
61