Buderus 600 - 11S Installation And Servicing Instructions page 24

2 Initial start-up
2.1.3 Purging air from the gas supply system
Close the gas service valve.
Unscrew the sealing closure of the gas connection-
pressure testing nipple by two turns (fig. 31).
Purge system and appliance as per relevant procedures,
IGE/UP/1b. Ensuring all safety requirements are met.
Open the gas service valve.
Close the gas shutoff valve once more.
Shut the sealing closure of the test nipple once more.
Open cover for 2nd operating level (fig. 32, item 1).
Start boiler up and move chimney sweep switch (fig. 32,
item 3) to position "1".
The display shows (fig. 32, item 2) "
the gas supply system is purged of air. Return chimney sweep
switch to normal running position, that is position "0".
2.1.4 Check combustion air/flue gas connection
Check to ensure that the correct combustion air/flue gas
system has been fitted.
Check that the instructions included in the appropriate flue gas
system installation manual have been followed.
Subject to modifications resulting from technical improvements!
24 Installation and maintenance instructions for wall-mounted condensing gas boiler 600 - 11S/19S/24S/24C • 05/2004
-. =.
" or " " to indicate that
Fig. 31 Purging air from the gas supply system
Fig. 32 Display and chimney-sweep switch
Type of gas Factory settings of gas burners
When delivered ready for operation
and set to Wobbe index
14.1 kWh/m
Natural gas E
1013 mbar), applicable for Wobbe
(includes natural
index range 11.3 to 15.2 kWh/m
gas H)
Inscription on gas-type indicating
label: Category setting:
G 20 - 2E_20 mbar
After adaptation by a CORGI
registered installer, the unit can be
Propane P run on propane. Inscription on gas-
type indicating label:
3P G 31_30-50 mbar
Table 4 Gas-supply types
Boulter Buderus Ltd. • http://www.boulter-buderus.co.uk
2
3
11
KW
0 1
1 2
1
10
1
10
1
3
(referred to 15 °C,
3
.