Inlet Gas Pressure - Buderus Condensing gas boiler Instructions Manual

3
Liquid Propane conversion
DANGER: Risk of explosion
B Check for leaks before working on gas-
carrying components.
CAUTION:
due to a short circuit.
B Cover damageable parts before leak
testing.
B Do not spray the leak detection agent onto
cables, plugs or electrical connection
lines. Do not allow it to drip onto them
either.
B Disconnect the boiler from the power supply.
B Check the exterior tightness of new conduit sections
up to and including the direct sealing point on the gas
burner fitting. The maximum test pressure allowed on
the input of the gas burner fitting is 60 " W.C.
(150 mbar).
B Check the input rates after converting the boiler to LPG
to the values on the front page.
3.4

Inlet gas pressure

NOTICE
B Contact the relevant gas utility company if
the required inlet gas pressure is not
available.
B Install a gas pressure regulator before the
gas burner fitting if the supply pressure is
too high.
B Open at least 1 thermostatic radiator valve if present to
allow water to flow through the boiler. Do not switch on
the boiler.
B Close the gas shut-off valve. Loosen the screw plug on
the inlet gas pressure testing nipple by 2 turns
(Æ fig. 16, [1]).
B Connect the pressure gauge connection hose to the
testing nipple (Æ fig. 16, [2]).
B Slowly open the gas shut-off valve.
The boiler and its individual shutoff valve must be
disconnected from the gas supply piping system during
any pressure testing of that system at test pressures in
excess of 60 " W.C. (150 mbar). 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 60 " W.C. (150 mbar).
8 Logamax plus GB162-80 kW/100 kW - We reserve the right to make any changes due to technical modifications!
1
2
Fig. 16 Measuring the gas supply pressure
B Press on the control panel cover to open it.
Fig. 17 Opening the control panel
B Switch on the boiler by setting the main switch to
position "1" (Æ fig. 1, page 5).
B Press the "Chimney Sweep"
approx. 2 seconds until the display shows a decimal
point.
B 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. 7.0 to 10.5 " W.C. (17.4 to
26.1 mbar), nominal supply pressure 8.0" W.C.
(19.9 mbar).
• for LPG - min. 8.0 to 13.0" W.C. (19.9 to 32.3 mbar),
nominal supply pressure 11.0" W.C. (27.4 mbar).
B Press repeatedly the "Service" e button until the
temperature indication is displayed.
B Press the "Chimney Sweep" d button to end the
measurement procedure.
B Close the gas shut-off valve.
B Remove the connection hose again and tighten the
screw plug on the testing nipple.
B Open the gas shut-off valve again.
6720615033-017.1TD
6720615033-018.1TD
d
button and hold it for