Buderus Logano GC124 II/SP Installation And Service Instructions Manual page 38

13 Final start-up procedure for GC124 SP models
Carrying out leak test
26. Open main gas shut-off.
27. Set thermostat at least 10°F above ambient to
establish a heat demand.
28. Turn on ON/OFF switch (Emergency shutoff switch).
29. Repeat steps 1 to 5 on page 35.
30. After the burner has lit check the gas valve including
screw plugs for leaks using soapy water. If no leaks
are found, continue with step 32. If leaks are found,
close gas valve and turn ON/OFF knob on gas valve
clockwise to the OFF position. Disconnect the
heating system from the power source and turn
thermostat to its lowest setting.
31. Seal any leaks. Repeat steps 26 to 30.
32. Carefully wipe away the soapy water to prevent
corrosion caused by the alkaline content of the soap.
Checking the vent damper
RISK TO LIFE
due to leaking flue gases
Verify the functionality and operability
WARNING!
of the vent damper.
33. Check the position of the vent damper. The damper
must be fully open (vertical). When the burner is on,
flue gases must not escape from the open draft hood
38 Installation and maintenance instructions Gas Boiler Logano GC124 II/SP • Issue 07/2006
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Fig. 35 Checking the vent damper
1 Open draft hood
2 Vent connection
3 Vent damper
4 Damper blade position indicator
5 Vent damper motor
6 Flue gas collector
7 Boiler
We reserve the right to make any changes due to technical modifications.
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