20
icos system condensing -
Installation and Servicing
INSTALLATION
The safety valve is located at the bottom RHS of the boiler.
The discharge pipe should be positioned so that the discharge of water or steam cannot create a hazard to the occupants of
the premises or damage the electrical components and wiring.
27 SAFETY VALVE DRAIN
28 CONDENSATE DRAIN
Refer also to the British Gas document: 'Guidance Notes for
the Installation of Domestic Gas Condensing Boilers' (1989).
The condensate drain provided on the boiler must be
connected to a drainage point, preferably within the building.
Ensure that the condensate trap is full of water before
commissioning the boiler - refer to Frame 19.
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.
Any external runs must be insulated.
Excessive external pipe runs should be avoided in order 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.
In order to defer the onset of freezing of the condensate drain
when the pipe is run externally the pipe should be run as far
26 GAS CONNECTION
1.
Extend a gas supply pipe of not less than 15mm O.D.
copper to the boiler.
A working gas pressure of 20mbar (8" w.g) should be
available at the boiler inlet, with the boiler firing at full
output.
IMPORTANT.
The gas service cock contains a non-metallic
seal so must not be overheated when making
capillary connections.
GAS IN
2071
1
Piping
frame
Rubber washer
Gas cock
(shown in the
open position)
2025
Condensate
drain
Front view
155mm
Side view
as possible within the building.
The boiler condensate drain connection is suitable for Marley
'Terrain' tubing.
A siphon kit is available to prevent freezing.
INST
ALLA
TION
Содержание icos system m3080
Страница 1: ......
Страница 51: ...51 icos system condensing Installation and Servicing NOTES ...
Страница 53: ......