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Installation Instructions - Page 15
FIG. 19
LOCATION OF PRESSURE
SENSING TUBES
If the boiler is to be used on a gravity DHW system
refer to Page 16, overheat thermostat positioning
before fitting the flue elbow.
Slide the flue elbow into the flue duct and locate the
flange over the studs on the fluehood ensuring that
the sealing gasket is in place. Secure the elbow to
fluehood using the four brass securing nuts.
Reconnect flexible tubes to elbow. ENSURE THEY
ARE NOT KINKED. NOTE: Red tube connects the
front aluminium tube in upper chamber to the lower
connection on elbow, each being identified with a
red ring.
FIG. 20B
WARNING: UNDER NO CIRCUMSTANCES SHOULD A 'REDUCING SET' BE FITTED
Supplied By www.heating spares.co Tel. 0161 620 6677
FIG 20. PIPE CONNECTIONS
Connect system pipework to the boiler, compression
fittings are recommended. A drain off tap should be
installed close to the boiler if it is in a low point of the
system.
On combined gravity hot water/pumped central heating
installations the flow and return pipes for both the gravity
hot water circuit and pumped central heating circuit must
be connected to tees fitted directly to the flow and return
pipes on the boiler
The gravity circuit should be installed in 28mm copper
pipe. 28mm tees should be used.
The injector disc (accessory pack H) must be positioned in
the pumped return branch of the tee and the pipes
connected to the tees as illustrated in Figs. 20 and 20B.
Two discs are provided, use the larger and discard the
other.
Connect the gas supply pipe to the inlet of the gas cock,
connect the boiler service cock to the inlet of the gas valve.
Ensure that the gas cock is in a position where it can be
easily operated when the controls cover is removed.
15
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