Domestic Water; Water Treatment; Electrical Supply - Biasi RIVA PLUS HE 24C ERP User Manual And Installation Instructions

Filling
A method for initially filling the system and re-
placing water lost during servicing must be pro-
vided and it must comply with local water au-
thority regulations.
The correct method is shown in Fig. 5.4.
The temporary connection must be removed im-
mediately after filling.
Supply pipe
(cold water inlet)
C.h. return pipe
Fig. 5.4
The installer should ensure that no leaks exist
either inside the boiler or on the system as fre-
quent filling of the system could cause prema-
ture scaling of the heat exchanger.
5.9

Domestic water

The domestic water installation must be in ac-
cordance with the relevant recommendations
of BS 5546. Copper tubing to BS EN 1057 is
recommended for water carrying pipework and
must be use for pipework carrying potable water.
For Ireland (IE), refer to I.S.813.2002.
5.10

Water treatment

C.h. circuit
Where a new boiler is fitted to a new system with
either plastic or copper pipes, it is important the
system is fully flushed, on completion, to ensure
flux residues, swarfs, oils and other installation
debris is removed.
Where a new boiler is fitted to an existing sys-
tem, it is important the debris from the existing
system is fully removed in order to ensure the
efficiency of the new appliance is maintained.
Details on flushing procedure are given in the
section "Initial filling of the system" to page 51
- 42 - - 42 -
GENERAL REQUIREMENTS
Control valve
Double check valve
Temporary
connection
Control valve
of this manual.
D.h.w. circuit (scale protection)
In areas where the water is 'hard' (i.e. more than
200 ppm total hardness as defined by BS 7593:
2006 Table 2) it is recommended that a proprie-
tary scale-reducing device is fitted into the boiler
cold supply, within the requirements of the local
water company.
5.11

Electrical supply

Warning, this appliance must be earthed
External wiring to the appliance must be carried
out by a competent person and be in accord-
ance with the current I.E.E. Regulations 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 sup-
ply must facilitate complete electrical isolation of
the appliance by the use of a fused spur isola-
tion switch. Its installation permits a complete
switching off in the conditions of the overvoltage
category III. Alternatively 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 sup-
ply must be readily accessible and adjacent to
the appliance, except where the appliance is
installed in a bathroom, this must then be sited
outside the bathroom.