Buderus GC144/3, Инструкция по установке и обслуживанию

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12
Final start-up procedures
Logano GC 144 II – 6 720 808 893 (2017/02) 16
11.1.2 Turning on heating system
The boiler is fully functional with the factory-installed boiler temperature
controller and field installed and connected vent damper.
▶ Switch on power to the heating system, continue to chapter 12.
▶ Verify that the thermostat (optional) signals a heat demand to the
boiler (set temperature dial at least 10°F above ambient).
Fig. 21 ON/OFF switch
[1] Emergency shutoff switch
12 Final start-up procedures
Verifying the ignition spark
▶ Look through the sight glass at the igniter and verify that a spark is
visible.
▶ Should no spark be visible continue to troubleshooting in
chapter 15.8, page 27.
Fig. 22 GC 144 II
[1] Sight glass
▶ Turn ON/OFF knob (

figure 23) counterclockwise to the ON
position.
▶ The ignition flame will appear and ignite the main burner. If the main
burner does not ignite, close the gas shut-off. Disconnect heating
system from the power source and inform your customer service
technician or gas company.
Fig. 23 Gas valve
[1] ON/OFF knob (shown in ON position)
Checking gas supply pressure
▶ Check the gas supply pressure while the boiler is operating. The
connection pressure for natural gas must be between 4.7" and 10.5"
W.C. For propane gas (LP) it must be between 11" and 13" W.C. If
the gas pressure is in the correct range, record the measured value in
the start-up protocol, then continue with the next step. If the supply
pressure does not meet the above criteria, close gas line and contact
the gas company.
Checking orifice pressure
▶ Compare the orifice pressure with the values in table 10
(

page 17). If it differs by more than 0.2" W.C., adjust accordingly.
To set the orifice pressure, the protective screw on the gas valve
must be removed (

figure 24, page 17). 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.
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WARNING: Risk to life from fire or explosion.
▶ Never use excessive force on the ON/OFF knob
(

figure 23).
▶ Turn ON/OFF knob only by hand.
▶ Never use tools to turn knob.
▶ If you are unable to turn the knob by hand, do not try
to repair it.
▶ Call Buderus technical service for assistance.
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