Buderus Logano GC124 II/SP Installation And Service Instructions Manual page 37

Final start-up procedure for GC124 SP models
16. Observe main burner flame through the sight glass
( Fig. 29, page 35) in the burner plate. The flame
must have a steady and fixed contour and generally
has a bluish color. If the main burner flame meets
the requirements, proceed with step 17. If the main
burner flame is too weak or is yellow or goes out,
turn the ON/OFF knob (
clockwise to OFF. Close the gas shut-off and
disconnect the heating system from the power
supply and contact the customer service technician
or the gas company.
Check flame rod
17. Turn gas valve ON/OFF knob (
to OFF position.The main burner flame and the
ignition flame are extinguished.
18. Turn gas valve ON/OFF knob (
counterclockwise to PILOT position.
19. Wait three (3) minutes and turn gas valve ON/OFF
knob ( Fig. 34) counterclockwise to ON position.
20. Gas must not flow into the main burner. Use
a pressure gauge to check that the manifold
pressure (output pressure) is 0.
21. If gas flows turn gas valve ON/OFF knob (
to OFF position immediately to close the gas valve.
Disconnect heating system from the power source
and inform your customer service technician or gas
company. If no gas flows continue with step 22.
22. Turn gas valve ON/OFF knob clockwise to OFF
position.
23. Close main gas shut-off.
24. Disconnect the heating system from the power
source.
25. Remove pressure measuring nipple and pressure
gauge for measuring gas pressure and manifold
pressure from the gas valve and close the openings
with the screw plugs.
We reserve the right to make any changes due to technical modifications.
Installation and maintenance instructions Gas Boiler Logano GC124 II/SP • Issue 07/2006
Fig. 34) on the gas valve
Fig. 34) clockwise
Fig. 34)
Fig. 34)
1
Fig. 33 Main burner
1 Main burner flame
1
Fig. 34 GC124 SP gas valve
1 ON/OFF knob (in ON position)
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