Buderus 600 - 11S Installation And Maintenance Instructions Manual page 60

6 Changing to another type of gas
Swivel the air combination unit forwards (fig. 92, item 1).
Pull the air combination unit up and out of the bayonet
connector (fig. 92, item 2) and remove via the front of the
unit.
Replacing a gas nozzle
WARNING!
Conversion to another gas type is
implemented by installing/removing a gas
nozzle (fig. 93, item 3) of the appropriate gas
nozzle diameter (table 9).
Undo the three screws (fig. 93, item 2) on the long side of
the gas fitting.
Remove the gas nozzle and insert the correct gas nozzle
for the new gas type.
Insert new seal (fig. 93, item 4).
Remount all components in the reverse sequence.
Cover stickers (fig. 94, item 1) with the new stickers
(2 pieces, included in conversion kit).
Starting up
Start up the appliance following the procedure described in
the mounting and maintenance instructions.
Include all seal areas concerned during mounting in the
gas-tightness check when in operation.
Buderus • http://www.buderus-domestic.co.uk
60 Installation and maintenance instructions for wall-mounted condensing gas boiler 600 - 11S/19S/24S/24C • 02/2006
s
2
Fig. 92 Remove the air combination unit
Gas nozzles
Type of gas supply
Natural gas H (G20)
LPG
Table 9 Gas-nozzle diameter
Fig. 93 Replacing a gaz nozzle
Subject to modifications resulting from technical improvements!
1
∅
[mm]
Venturi
tubes
11S 19S/24(C)
Standard
5.55 6.5 Venturi
tubes
Standard
3.40 4.15 Venturi
tubes