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

Steps
(continued)
S
Start-up and Maintenance
ervice
S
Start-up and Maintenance
ervice
F
4x
B
C A
Fig. 61

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

E D
Initial Start-up, Inspection and Maintenance
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
diagonally tighten 4 torque screws
F (approx. 3 lb. ft. / 4 Nm using a
calibrated torque wrench).
2. Insert new supplied gasket and
tighten the fitting E on the gas
connection pipe.
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.
, mount burner, and
61