Dynamic Gas Pressure Test - Bosch ZBR16-3A Installation And Service Instructions Manual

78 | Gas type conversion
11.4

Dynamic gas pressure test

B Switch the appliance OFF and close the gas shut-off
valve.
B Loosen the screw in the test port for gas inlet pressure
( Fig. 72, [1]) and connect a pressure gauge
( Fig. 74).
Fig. 74 Dynamic gas pressure test port
B Turn on the gas cock and switch the appliance ON.
B Press and hold the emissions test button
lights up.
The display shows the supply temperature alternating
with = maximum set output in heating mode.
B Briefly press the emissions test button
The display shows the supply temperature in
alternation with = maximum nominal output.
B Check the required inlet gas pressure according to
table 31.
6 720 643 068 (2011/06)
Gas type
NG
LPG (propane)
Tab. 31 Inlet gas pressure
B Repeatedly press the emissions test button
light goes out.
The display returns to the supply temperature.
B Switch the appliance OFF, turn off the gas cock, remove
the pressure gauge and tighten the screw in the test
port for gas inlet pressure.
B Reinstall the cover.
until it
.
Nominal
pressure
" W.C.
(mbar)
7 (17.4)
11 (27.4)
Do not operate the appliance if the measured
value is below or above these values.
Determine the cause and eliminate the fault. If
this is not possible, block the appliance on the
gas side and notify the gas supplier.
Copyright (optional information)
Permissible pressure
range for maximum
nominal output
" W.C. (mbar)
3.5-10.5 (8.7-26.1)
8-13 (19.9-32.3)
until the