Buderus Logano G124X II/SP Installation And Maintenance Instructions Manual page 35

Placing the heating system in operation
25. Turn gas valve ON/OFF button clockwise to OFF
position.
26. Close main gas shut-off.
27. Disconnect heating system from the power supply
and set the thermostat to the lowest setting.
28. Remove pressure measuring nipple and pressure
gauge for measuring gas supply pressure and
manifold pressure from the gas valve and close the
openings with the screw plugs.
29. Repeat steps 1 to 10 (depending on the control) and
20 to restart the heating system. Check the screw
plugs for leaks with soap solution. If no leaks are
found, continue with step 31. If leaks are found,
close gas shut-off and switch ON/OFF button on gas
valve clockwise to the OFF position. Disconnect the
heating system from the power supply.
30. Seal leaks. Open gas shut-off and repeat step 24.
31. Carefully wipe away the soap solution to prevent
corrosion caused by the alkali content of the soap.
32. Check the function of the maximum aquastat to
make sure that it switches off the boiler as soon as
the boiler water temperature set at the aquastat or
the Logamatic 2107 control is reached. Record the
result in the commissioning protocol of the
installation and maintenance instructions.
33. Replace front panel of boiler.
With the Logamatic 2107 control only
34. Select AUT (automatic mode) with the mode
selection switch.
We reserve the right to make any changes due to technical modifications.
Installation and maintenance instructions Logano G124X II/SP special gas-fired boiler • Issue 04/2005
1
Fig. 33 G124X II gas valve
1 ON/OFF button (at ON position)
11
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