Glow-worm hxi and Gas Valve - Manual (Page 22)

22 0020008153-05
7.1 Gas Connection
Before connection check the supply of local gas.
The gas supply can be connected from below, see diagram 7.1.
or through the wall at the rear of the boiler.
Refer also to section 1.2 and 1.3.
The whole of the gas installation, including the meter, should be
inspected, tested for soundness and purged in accordance with
the current issue of BS6891 and in IE the current edition of
I.S.813 "Domestic Gas Installations".
7.2 Water Connections
Provision is made for the water connections to be made from
above the boiler, see diagram 7.2. The position is shown on the
wall template.
Flush out the domestic hot water and the heating systems
before connecting to the boiler.
7.3 Condensate Drain Connection
The condensate drain, see diagram 7.1, is suitable for use with
standard "Push fit" overflow pipe and couplings. DO NOT use
adhesive when connecting to the spigot. The drain pipe should
be non corrosive plastic.
The condensate drain pipe should have a fall of at least 2.5 o
away from the boiler and if possible be discharged into the
household internal drainage system. If this is not practicable,
discharge can be allowed into the external household drains or
a purpose designed soak away, refer to diagram 7.3.
It is recommended that any external condensate drain pipe is
insulated and also preferably of 32mm diameter, to prevent
freezing in adverse weather conditions.
The condensate is discharged periodically in ‘slugs’ by siphonic
action.
It is not necessary to provide air breaks or extra traps in the
discharge pipe as there is already a 75mm high trap inside the
boiler. Fitting an extra trap may cause the boiler siphon to work
incorrectly.
Refer to BS5546 or BS6798 for advice on disposal of boiler
condensate.
7 Gas, Water and Condensate Connections
Diagram 7.1
13114
Diagram 7.2
9244
FLOW
COUPLING
RETURN
GAS
SERVICE
COCK
GAS
SUPPLY
PIPE IN
GAS SERVICE
COCK SHOWN IN
OPEN POSITION
UNION CONNECTOR
GAS SERVICE
COCK LINER
SPIGOT
22mm compression is the
recommended fixing
for servicing.
(not supplied)
CONDENSATE
DRAIN PIPE