Buderus Logano G124X II/SP Installation And Maintenance Instructions Manual page 39

Placing the heating system in operation
Check flame sensor
56. Turn gas valve ON/OFF button (
clockwise to OFF position. The main burner flame
and the pilot flame are extinguished.
57. Turn gas valve ON/OFF switch (
counterclockwise to PILOT position.
58. Wait three (3) minutes and turn gas valve ON/OFF
switch ( Fig. 38) counterclockwise to ON position.
Gas must not flow into the main burner.
59. Use a pressure gauge to check that the manifold
pressure (output pressure) is 0.
60. If gas flows turn gas valve ON/OFF switch
( Fig. 38) to OFF position immediately and close
the gas shut-off.
61. Disconnect heating system from the power supply
and inform your customer service technician or LP
gas company. If no gas flows continue with step 62.
62. Turn gas valve ON/OFF button clockwise to OFF
position.
63. Close main gas shut-off.
64. Disconnect the heating system from the power
supply.
65. 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.
66. Repeat steps 1 to 6 and 35 to 52 to place the heating
system in operation again. Check the screw plugs
for leaks with soap solution. If no leaks are found,
continue with step 68. 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.
67. Seal leaks. Open gas shut-off and repeat step 66.
68. Carefully wipe away the soap solution to prevent
corrosion caused by the alkali content of the soap.
69. Replace front panel of boiler.
With the Logamatic 2107 control only
70. 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
Fig. 37)
Fig. 38)
Fig. 38 G124X SP gas valve
1 ON/OFF button (at ON position)
1
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