13
Installation and maintenance manual ecoTEC
of Gas Engineers Publication IGE/UP/7/1998 “Guide for
Gas Installation in Timber Framed Housing”.
3.5 Gas
supply
The gas supplier should ensure the availability of an
adequate supply of gas. A gas meter may only be con-
nected to the service pipe by the supplier of gas or their
contractor. An existing meter should be checked to
ensure that it is capable of passing the rate of gas sup-
ply required.
Installation pipes should be fitted in accordance with
BS 6891. In IE the current edition of IS 813. Pipework
from the meter to the boiler must be of an adequate
size. Do not use pipes of a smaller size than the boiler
gas connection (15 mm). The complete installation must
be checked for leaks and purged as described in
BS 6891.
3.6 Flue
pipe
Danger!
Vaillant appliances are certified only with genu-
ine Vaillant flue pipes. Only use genuine Vaillant
flue pipes. Malfunctions can occur if you use
other accessories. These may result in damage
and injury. You will find a list of genuine flue
pipes in the Vaillant installation manual for flue
pipes.
The CE mark is valid only if the appliance is
operated with Vaillant flue pipes.
3.6.1 Standard
100
mm flue system
600
65.5
30
74
48
Fig. 3.4 Art. No. 303 933
The standard 100 mm flue system (Art. No. 303 933) is
suitable for installations up to 666 mm measured from
the centre of the boiler flue outlet to the outside face of
the wall.
Flue extensions are available to extend this length up to
8 m. Both 90° bends and 45° elbows are also available
to increase siting flexibility.
70
1435
10
550
Fig. 3.5 Art. No. 303 900
3.6.2 Optional 125
mm flue system
A concentric flue system of 125 mm outside diameter is
available and can be used to achieve flue lengths up to
20 m.
A vertical flue system is also available. Refer to flue sys-
tem installation instructions for full details.
70
1103
70
15
Fig. 3.6 Art. No. 303 209
15
3
0
880
70
Fig. 3.7 Art. No. 303 200
General requirements 3
