24
INSTALLATION
icos system -
Installation and Servicing
nm84
60
Piping
frame
Blue fibre washer
Compression
gas coc
k
(
shown in the
open position
)
GAS IN
27 GAS CONNECTION
IMPORTANT.
The gas service cock is sealed with a
non-metallic blue fibre washer so must not be
overheated when making capillary connections.
Refer to Frame 2 for details of the position of the gas
connection.
N.B.
The principle of the 1:1 gas valve ensures that
the
icos system HE range
is able to deliver it's full
output at inlet pressures down to 14mb. However if
dynamic pressures below 20mb are experienced
ensure this is adequate for
ALL
other gas appliances
in the property.
A boiler gas supply pipe length of 20m and not less
than 15mm O.D. can be connected to the boiler via the
gas service cock union.
Ensure that the gas supply pipe does not foul the
boiler casing.
Refer to Frame 37 or 'Servicing' for details of the pressure
test point position.
nm7898
2
1
3
26 CONNECTING THE FLUE TO THE BOILER
1.
Locate the flue into the turret.
2.
Insert the flue assembly through the prepared hole in
the wall.
3.
Locate the flue turret on the top of the boiler, ensuring
that the turret gasket is in place. Check that the flue 'A'
seal located in the top of the flue manifold is secure and
giving an effective seal.
4.
Secure the flue turret on top of the boiler by inserting the
open ends of the turret clamp under the 2 studs and
fixing it in the middle with the single M5 x 10mm pozi-
hex screw provided.
5. Flues over 1 metre long.
Fix the flue support bracket to the
wall, using the wall plugs and
wood screws.
NB.
The support
bracket will utilise
one fixing hole only
whilst used in
conjunction with the
stand-off option.
Note.
Before fitting the flue turret fill the condensate trap within the boiler by pouring a cupful of water into the flue outlet A.
Take care to ensure that the water is only poured into the flue outlet, and does not spill into the boiler casing.
INST
ALLA
TION
200214-11.pmd
17/11/2006, 09:35
24
