Water Treatment - Biasi Activ A 250V User Manual And Installation Instructions

The installer should ensure that no leaks ex-
ist either inside the boiler or on the system
as frequent fi lling of the system could cause
premature scaling of the heat exchanger.
5.9

Water treatment

C.h. circuit
Where a new boiler is fi tted to a new system
with either plastic or copper pipes, it is im-
portant the system is fully fl ushed, on com-
Open vent water system with flow and return connected to bottom pipes.
COLD WATER
STORAGE
TO DRAIN
OFFTAP
THERMOSTAT
STOP
VALVE
HOT WATER
CYLINDER
TERMINAL
BOLCK
DRAIN
ROOM
THERMOSTAT
CH/DHW
2 CHANNEL
PROGRAMMER
RETURN
Fig. 5.9
GENERAL REQUIREMENTS
TANK
LOCKSHELD
VALVE
SWITCHED
LIVE
FLOW
pletion, to ensure fl ux residues, swarfs, oils
and other installation debris is removed.
Where a new boiler is fi tted to an existing
system, it is important the debris from the
existing system is fully removed in order to
ensure the effi ciency of the new appliance
is maintained.
Details on fl ushing procedure are given in
the section "Initial fi lling of the system" to
page 55 of this manual.
RECOMMENDATION ONLY
NOTE: pump requised
optimisation to prevent
pump over into feed &
expansion tank
AUTOMATIC
AIR VENT
MOTORIZED
VALVE
SYSTEM
BYPASS
PUMP
3-WAY
VALVE
MOTORIZED
VALVE
EXPANSION
COOLD
FEED
CH FEED
& EXPANSION
TANK
APPLIANCE
DRAIN
- 39 - - 39 -