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9
Start-up procedure
▶ Open the screw plug on the testing nipple of the gas supply pressure
and for purging [1] by 2 turns and install a hose.
Fig. 60 Bleeding the gas flow pipe
▶ Slowly open the gas valve by pushing on the gas valve and turning it
counterclockwise through ¼ rotation ( fig. 61). The gas valve is
open when it is in the vertical position.
Fig. 61 Opening the gas valve
▶ Purge the gas supply into a well ventilated area.
▶ Close the gas shutoff valve when no more air is present ( fig. 59).
▶ Remove the hose and tighten the screw plug on the testing nipple
again.
NOTICE
▶ Test the tightness of the measuring nipple(s) used.
9.5
Check the air/flue gas connection
Check the following points:
• Is the prescribed flue gas system used ( § 6.8, page 18)?
• Have the configuration instructions from the relevant flue gas system
installation instructions been observed?
36
9.6
Checking the appliance configuration
NOTICE
The burner must only be put into use with the correct
orifice ( table 16).
▶ Consult the relevant gas utility company for the type
▶ Check that the actual gas supply is in accordance
6720645916-57.1N
Fig. 62 Checking the gas classification label
Boiler
GB162-L.B.
80kW/ 100kW
Table 16 Gas orifice diameter
9.7
Measure the gas inlet pressure (working pressure)
6720645916-58.1N
▶ Open at least 2 radiator valves, if present. Do not switch ON the
boiler.
▶ Push on the control panel to open it.
▶ Switch OFF the power supply to the appliance.
▶ Close the gas valve in a clockwise direction ( fig. 63).
Fig. 63 Closing the gas valve
Logamax plus GB162-L.B. 80 kW / 100 kW – 6720645916 (2014/10)
of gas supply.
with the type of gas supply specified on the gas
classification label ( fig. 62).
Type of gas
supply
Altitude in ft. (m)
Natural gas
4,001-10,200
(1,220-3,111)
LPG
4,001-8,000
(1,220-2,625)
LPG
8,001-10,200
(2,625-3,111)
6720645916-60.1N
6720645916-59.1N
Gas orifice
diameter in
inch (mm)
0.370
(9.40)
0.185
(4.70)
0.197
(5.00)
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