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Start-up procedure 9
31
We reserve the right to make any changes due to technical modifications!
Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004
Buderus Hydronic Systems • http://www.buderus.net
z Briefly press on the control panel cover to open it.
z Switch on the heating system by setting the main
switch to position "1" (see chapter 10 "BC10 basic
controller", page 36).
z Press the "Chimney Sweep"
button and hold it (for
approx. two seconds) until the display shows a
decimal point.
z 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. 6.5 – 9.6 inch W.C.
(17 – 25 mbar), nominal supply pressure
7.7 inch W.C. (20 mbar).
for LPG - min. 8.0 inch W.C. (19.9 mbar), max.
13.0 inch W.C. (32.3 mbar), nominal supply pressure
11.0 inch W.C. (27.3 mbar)
z Repeatedly press the "Service"
button until the
temperature indication is displayed.
z Press the "Chimney Sweep"
button to end the
measurement procedure.
z Close the gas shut-off valve.
z Remove the connection hose again and tighten the
screw plug on the testing nipple.
z Open the gas shut-off valve again.
9.8 Checking and adjusting the gas/air
ratio
z Switch off the heating system using the main switch.
Fig. 29 Opening the control panel
CAUTION
Contact the relevant gas utility company if
the required inlet gas pressure is not
available.
Install a gas pressure regulator before the
gas burner fitting if the supply pressure is
too high.
31


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