Technical information

Installation and servicing instructions strictly reserved
for qualified gas installers
23
GAS, WATER AND CONDENSATE
CONNECTIONS
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 connection is at the rear
of the boiler, see diagram 7.1. Using 21.5mm
plastic overflow pipe connected to the spigot on
the condense trap (push fit). The drain pipe should
have a fall of a least 2.5° away from the boiler.
Condensate should, 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.
Diagram 7.1
12579
PLASTIC
OVERFLOW
PIPE
GAS SERVICE
COCK
GAS SUPPLY
PIPE IN
GAS SERVICE COCK
SHOWN IN
OPEN
POSITION
UNION CONNECTOR
CAP
GAS SERVICE
COCK LINER
SPIGOT
CONDENSATE DRAIN
CONNECTION