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G
A
B
F
. 2.4
IG
F
. 2.5
IG
8
E
C
D
E
F
KT007A
2.7
G
C
AS
ONNECTION
The local gas region contractor connects the gas meter to
the service pipe.
If the gas supply for the boiler serves other appliances
ensure that an adequate supply is available both to the
boiler and the other appliances when they are in use at
the same time.
Pipe work must be of an adequate size. Pipes of a
smaller size than the boiler inlet connection should not be
used.
The gas installation should also be in accordance with the
relevant standards. In GB this is BS 6891, and in IE this
is the current edition of I.S. 813.
2.8
W
C
ATER
ONNECTIONS
V
IEW OF THE
L
:
EGEND
A = Central Heating Flow
B = Domestic Hot Water Outlet
C = Gas Inlet
D = Domestic Cold Water Inlet
E = Central Heating Return
F = Safety Valve Outlet
G = Drain valve
C
H
ENTRAL
EATING
Detailed recommendations are given in BS 6798:1987
and BS 5449-1:1990, the following notes are given for
general guidance.
P
W
:
IPE
ORK
Copper tubing to BS EN 1057:1996 is recommended for
water pipes. Jointing should be either with capillary
soldered or compression fittings.
Where possible pipes should have a gradient to ensure
air is carried naturally to air release points and water
flows naturally to drain taps.
The appliance has a built-in automatic air release valve,
however it should be ensured as far as possible that the
appliance heat exchanger is not a natural
collecting point for air.
Except where providing useful heat, pipes should be
insulated to prevent heat loss and avoid freezing.
Particular attention should be paid to pipes passing
through ventilated spaces in roofs and under floors.
B
-
:
Y
PASS
The appliance includes an automatic by-pass valve,
which protects the main heat exchanger in case of
reduced or interrupted water circulation through the
heating system, due to the closing of thermostatic valves
or radiators. S
D
YSTEM
ESIGN
This boiler is suitable only for sealed systems.
D
C
:
RAIN
OCKS
These must be located in accessible positions to permit
the draining of the whole system and should be fitted at
all low points. The taps must be at least 15mm nominal
size and manufactured in accordance with BS 2870:1980.
S
V
D
AFETY
ALVE
ISCHARGE
B
C
OILER
ONNECTIONS
:
:
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