Condensate Drain - IDEAL isar HE24 Installation And Servicing

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22 CONDENSATE DRAIN

Refer also to the British Gas document: 'Guidance Notes
for the Installation of Domestic Gas Condensing Boilers'
(1989).
Before mounting the boiler on the wall, the condensate
drain (provided in the h/ware pack) must be connected
from the boiler 'S' trap to a drainage point, preferably
within the building.
Ensure that the condensate trap is full of water before
commissioning the boiler . Refer to Frame 26.
The routing of the drain must be made to allow a
minimum fall of 1 in 20 away from the boiler, throughout
its length.
The drainage pipework must be arranged so that
obstruction (e.g. through freezing) of external drainage
pipe does not give rise to spillage within the dwelling.
IMPORTANT.
If excessive external pipework cannot be avoided an
additional siphon kit and insulation are recommended to
prevent possible freezing.
All pipework and fittings in the condensate drain system
must be made of plastic. No other materials may be
used.
The drain outlet on the boiler is standard 21.5mm
overflow pipe. This size must not be reduced in any part
of its length.
23 CONDENSATE PIPE TERMINATION CONFIGURATIONS
Note. ALL EXTERNAL PIPE RUNS MUST BE INSULATED
1. INTERNAL TO SINK WASTE
UPSTREAM OF SINK WASTE
TRAP
2. INTERNAL TO SINK WASTE
DOWNSTREAM OF SINK
WASTE TRAP (PREFERRED
METHOD)
* If drain termination is to soil
stack, a 75mm trap will be
required
isar -
Installation and Servicing
INSTALLATION
BOILER
75mm trap
cla7771
BOILER
cla7772 75mm trap
Front View
Condensate
drain
155mm
Sink constitutes
air break
Sink
Side View
Open end of pipe
direct into gulley
below grating but
above water level
Ground Level
DRAIN
Open end of pipe
direct into gulley
below grating but
above water level
Ground Level
DRAIN
continued . . . .
21