Boiler
Fig. 4
Magnetic
Cleaner
Return
Pump
Fig. 5
© Baxi Heating UK Ltd 2012
Copper
Copper
0.5m
0.5m
Copper
1m
Manual Air
Vent
Flow
Boiler
6.0 System Details
6.3
Pipework
1. The sizes of flow and return pipes from the boiler
should be determined by normal methods, according to
the requirements of the system. The connections to the
boiler will accept 22mm pipe fittings. Compression
fittings must be used to prevent heat damage to the
boiler (as supplied see Section 9.3).
2. A 20 °C drop in temperature across the system is
recommended for condensing boilers, but where
radiator sizing is marginal it may be advisable to retain a
system temperature drop of 11°C.
Flow
Return
3. In systems using non-metallic pipework it is necessary
to use copper pipe for the boiler Flow and Return. The
copper must extend at least 1 metre from the boiler
and include any branches (Fig. 4).
6.4
Bypass Requirements
1. An Automatic Bypass must be fitted. The appliance
requires a minimum bypass of 7 l/min for open vented
systems.
6.5
Magnetic Cleaner (Fig. 5)
1. A 'ADEY MagnaClean TwinTech' Magnetic Filter
must be fitted on the return to boiler as close to the
appliance as possible. FAILURE TO FIT THIS DEVICE
WILL INVALIDATE THE APPLIANCE WARRANTY.
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