Inlet Gas Pressure - Buderus GB142-60 Instruction

3.2

Inlet gas pressure

Open at least one thermostatic radiator valve if
present to allow water to flow through the boiler.
Do not switch on the boiler.
Close the gas shut-off valve. Loosen the screw plug
on the inlet gas pressure testing nipple by two turns
(fig. 5, pos. 1).
Connect the pressure gauge connection hose to the
testing nipple (fig. 5, pos. 2).
Slowly open the gas shut-off valve.
The boiler and its individual shutoff valve must be dis-
connected from the gas supply piping system during
any pressure testing of that system at test pressures in
excess of ½ psi (3.5 kPa).
The boiler must be isolated from the gas supply piping
system by closing its individual manual shutoff valve
during any pressure testing of the gas supply piping
system at test pressures equal to or less than ½ psi
(3.5 kPa).
Briefly press on the control panel cover to open it.
Switch on the heating system by setting the main
switch to position "1" (see fig. 10, page 11).
Press the "Chimney Sweep"
(for approx. two seconds) until the display shows a
decimal point.
Measure the gas connection pressure as soon as
the "Burner" LED lights and enter this value in the
start-up report.
The inlet gas pressure must be:
– for natural gas - min. 3.5 to 10.5 inch W.C. (8.7 to
26.1 mbar), nominal supply pressure 7.0 inch W.C.
(17.4 mbar)
– for LPG - min. 8.0 to 13.0 inch W.C. (19.9 to
32.3 mbar), nominal supply pressure 11.0 inch
W.C. (27.4 mbar).
Repeatedly press the "Service"
temperature indication is displayed.
GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!
d
button and hold it
e
button until the
Fig. 5 Measuring the inlet gas pressure
Fig. 6 Opening the control panel
LP conversion
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