Initial start-up
2
24
Installation and servicing instructions condensing gas boiler 800 - 24/29/43/60 and 800 - 24T25/29T25 H/V • edition 02/2006
Subject to modifications resulting from technical improvements !
Buderus • http://buderus-domestic.co.uk
2.2
Start-up work
2.2.1
Checking the boiler equipment
fig. 30 Purging the gas supply pipe (SIT gas units)
Type of gas
Factory setting of gas burners
Natural
gas
E
(includes
natural
gas
H
)
When delivered ready for operation and set
to Wobbe index 14.1 kWh/m
3
(referred to
15 °C, 1013 mbar), applicable for Wobbe in-
dex range 11.3 to 15.2 kWh/m
3
.
Inscription on type of gas label:
Category setting: G 20
2E_20 mbar
Formerly: set to Wobbe index 15.0 kWh/m
3
(referred to 0 °C, 1013 mbar), applicable for
Wobbe index range 12.0 to 15.7 kWh/m
3
.
LPG
After change-over (see Installation Instruc-
tions: “Changing to another type of gas”)
suitable for LPG.
Inscription on type of gas label:
Category setting: 3P G 31_30-50 mbar
Table 4
Gas burner factory settings
Gas boiler
Type of gas
Gas injec-
tor diame-
ter [mm]
Air injec-
tor diame-
ter [mm]
800-24
(24T25 H/V)
Natural gas
H
4.65
21.55
LPG
3.45
20.10
800-29
(29T25 H/V)
Natural gas
H
5.00
23.30
LPG
3.90
23.00
800-43
Natural gas
H
6.40
29.30
LPG
4.85
27.40
800-60
Natural gas
H
8.00
36.40
Table 5
Gas and air injector diameters
NOTE!
The burner must only be put into operation
with the correct injectors (table 5).
