Water Treatment; Electrical Supply - Biasi Activ A 18S User Manual And Installation Instructions

turn valve, without the approval of the Local
Water Authority.
Filling
A method for initially fi lling the system and
replacing water lost during servicing must
be provided and it must comply with loca
water authority regulations.
The correct method is shown in Fig. 5.4 .
The temporary connection must be removed
immediately after fi lling.
Supply pipe
(cold water inlet)
C.h. return pipe
Fig. 5.4
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-
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 51 of this manual.
- 34 - - 34 -
GENERAL REQUIREMENTS
Control valve
Double check valve
Temporary
connection
Control valve
5.10

Electrical supply

Warning, this appliance
earthed.
External wiring to the appliance must be
carried out by a competent person and be in
accordance with the current I.E.E. Regula-
tions and any local regulations which apply.
Reference should be made to the current
ETCI rules for electrical installations.
For Ireland (IE), refer to I.S.813.2002.
The boiler is supplied for connection to a
230 V~ 50 Hz supply. The supply must be
fused at 3A.
The method of connection to the electricity
supply must facilitate complete electrical
isolation of the appliance by the use of a
fused spur isolation switch. Its installation
permits a complete switching off in the con-
ditions of the overvoltage category III. Alter-
natively it can be used a 3A fused three pin
plug and unswitched shuttered socket outlet
both complying with BS 1363.
The point of connection to the electricity
supply must be readily accessible and adja-
cent to the appliance, except where the ap-
pliance is installed in a bathroom, this must
then be sited outside the bathroom.
must be