Initial Start-up, Inspection and Maintenance
59
Steps
(continued)
20. Check gas pipes and fittings for leaks
S
ervice
Start-up and Maintenance
21. Reinstall burner
S
ervice
Start-up and Maintenance
1. Replace electrical cables from fan
motor , mount burner, and
diagonally tighten 4 torque screws
(approx. 3 ft.lbs./4 Nm using a
calibrated torque wrench).
2. Insert new gasket and tighten the
fitting on the gas connection
pipe.
3. Insert air pressure switch connection
pipe onto the gas valve “OUT”
connector (P2 on the switch).
4. Replace electrical cables from gas
valve , and ignition transformer
unit .
5. Open gas shutoff valve and switch
on power supply.
5581 775 1.3
The gas supply piping must be leak
tested before placing the boiler in
operation.
WARNING
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).
CAUTION
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