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

Start-up, Inspection and Maintenance
Steps
(continued)
Start-up and Maintenance
Start-up and Maintenance
Start-up and Maintenance
72

22. Check gas pipes and fittings for leaks

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

23. Reinstall burner

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 (35 lb.in.).
2. Insert new supplied gasket and tighten the
fitting E on the gas connection pipe to a torque
of 15 Nm (132 lb.in.).
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 52.
Vitodens 100-W, WB1B Installation & Service
WARNING
CAUTION