Check The Gas Supply Pressure; Flue Gas Test; Chimney Sweep Mode - Bosch Condens 8300i W Installation And Maintenance Instructions Manual

Inspection and maintenance
9.6.3

Check the gas supply pressure

▶ Switch off the device and close the gas isolator.
▶ Unscrew the screw on the test nipple for the gas supply pressure and
connect a pressure gauge.
T10
Fig. 43
▶ Open the gas isolator and switch on the device.
▶ Ensure that there is heat transfer by opening the radiator valves.
▶ Set the chimney sweep mode and start up the device at maximum
rated output.
▶ Check the required gas supply pressure according to the following
table.
Gas type Design
pressure
[mbar]
NG (23) 11.3
1)
LPG (propane) 27.5
LPG (butane) 27.5
1) Standard figure for LPG with fixed cylinders with capacities up to 15 000 l
Table 26 Permissible gas supply pressure
Commissioning must not take place outside of the permissible pressure
range.
▶ Identify the cause and rectify the fault.
▶ If this is not possible: isolate the device on the gas side and notify the
gas supplier.
▶ Set the chimney sweep mode and start up the device at minimum
rated output.
▶ Exit the chimney sweep mode.
40
0010016058-004
Permissible pressure range at
maximum rated output
[mbar] [kPA]
11 – 30 1.1 – 3.0
25 – 45 2.5 – 4.5
25 – 35 2.5 – 3.5
▶ Switch off the device, close the gas isolator, remove the pressure
gauge and tighten the screw.
▶ Refit the casing.
9.7

Flue gas test

Flue gas path testing
The checking of the flue includes the testing of the flue gas routing and a
CO test.
▶ Test the flue gas routing ( Chapter 9.7.2, page 41).
▶ Measure CO ( Chapter 9.7.3, page 41).
9.7.1

Chimney sweep mode

You have 30 minutes to take your measurements or to make your
settings. After this time, the device returns to normal operation.
In chimney sweep mode the rated output of the device can be selected.
▶ Ensure that there is heat transfer by opening the radiator valves.
▶ Press the OK key until the countdown is completed and Chimney
sweep is displayed.
▶ Confirm the query with Yes.
▶ Set the desired rated output using the  or the  keys.
The value is accepted after 2 seconds and marked with a tick.
▶ To exit the chimney sweep mode, press the d key.
Adjustment with removed casing in chimney sweep mode
1. Set the chimney sweep mode and start up the device at maximum
rated output.
2. Set the chimney sweep mode and start up the device at minimum
rated output.
Condens 8300i W – 6721841531 (2022/10)