Buderus Logano G124X II/SP Installation And Maintenance Instructions Manual page 33

Placing the heating system in operation
8. Turn gas valve ON/OFF switch counterclockwise to
ON position.
9. The ignition module must generate sparks towards
the pilot burner. The pilot flame must appear and
then ignite the main burner. If the main burner does
not ignite, close the gas shut-off. Disconnect heating
system from the power supply and inform your
customer service technician or LP gas company.
10. If the main burner has ignited, the gas valve must be
checked for leaks with soap solution. If no leaks are
found, continue with step 12. If leaks have been
found, switch ON/OFF switch on gas valve
clockwise to the OFF position. Disconnect heating
system from the power supply and set the
thermostat to the lowest setting.
11. Seal leaks. Repeat steps 1 and 2 (regardless of the
control in use).
Caution:
With aquastat control continue with steps 3 and 4,
with the Logamatic 2107 continue with steps 5
and 6.
Then repeat steps 7 to 10 regardless of the control
in use.
12. Check the supply gas pressure while the boiler is
operating. The supply pressure must be between
4.7" and 10.5" W.C. for natural gas and between 11"
and 13" W.C. for propane gas. Record the measured
values in the commissioning protocol in the
installation and maintenance instructions.
12b.Shut-off main gas supply. Install manometer on
manifold to measure manifold pressure. Open
shut-off valve, turn on boiler an measure manifold
pressure.
Natural gas
G124X II
[inch W.C.]
18
25
32
Tab. 7 Manifold pressure
13. Check manifold pressure. The manifold pressure
must be set in accordance with the values in
Tab. 7. To set the manifold pressure the cover
( Fig. 30) on the gas valve must be removed. Turn
the adjustment screw clockwise to increase the
pressure and counterclockwise to reduce the
pressure. This setting must be adjusted while the
boiler is operating.
14. Record the set value in the commissioning protocol
of the installation and maintenance instructions and
screw the safety screw (
gas valve again.
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
Propane
[inch W.C.]
3.6 9.8
3.5 10.3
3.6 10.0
Fig. 30, page 33) into the
1
5
4
Fig. 30 G124X II gas valve
1 ON/OFF button (at ON position)
2 Screw plug for gas supply pressure measuring port
3 Safety screw for manifold pressure setting
4 Screw plug for manifold measuring port
5 Safety screw for pilot ignition pressure setting
11
2
3
33