Publication No. 5102977
6 Installation Requirements
1. Installation Requirements
1.1 Gas Supply
The meter and supply pipes must be capable of delivering
thisquantityofgasinadditiontothedemandfromanyother
appliances in the house and must be governed at the
meter.
On 90 & 100 models, due to the gas flow rate required,
22mm gas supply pipe should be used up to the inlet
connection of the gas cock on the boiler.
Thecompleteinstallationmustbe tested for gas soundness
and purged as described in BS6891.
1.2 Electricity Supply
230V ~ 50Hz via a fused double pole switch with a contact
separation of at least 3 mm in both poles adjacent to the
boiler. Power consumption is approximately 80W. There
must be only one common isolator for the boiler and its
control system and it must provide complete electrical
isolation. A plug (if fitted) must be accessible to the user
after installation of the appliance.
Fuse the supply at 3 A. The minimum requirement for the
power supply cable is that it should be a PVC sheathed
cord at least 0.75 mm² (24 x 0.2 mm) (code designation
HO5 VV-F or HO5 VVH2-F) as specified in table 16 of
BS6500:1984.
All wiring external to the boiler shall comply with the latest
IEE Wiring Regulations, and any local regulations which
apply.
WARNING: THIS APPLIANCE MUST BE EARTHED.
In the event of an electrical fault after installation of the
boiler, preliminary electrical systems checks must be
carried out i.e. Earth Continuity, Short Circuit, Polarity and
Resistance to Earth.
1.3 Location of Boiler
Theboileris not suitable for external installation.Theboiler
must stand firm and level. No special floor protection is
needed,butfinisheswhichsoftenwhenwarme.g.linoleum
and plastic floor tiles should be removed or may be
protected by an insulating sheet at least 10mm thick.
The boiler must be installed so that the flue terminal is
exposed to the external air. It is important that the position
of the terminal allows the free passage of air across it at all
times.
The boiler is suitable for installation against a combustible
wall e.g. wood cladding, provided that the flue duct is not
closer than 25 mm to combustible material. A metal sleeve
should be installed to surround the flue duct to provide a
25mm annular space. Further guidance is given in
BS5440:1:2000,sub-clause 4.4.
If the boiler is to be installed in a timber framed building
it should be fitted in accordance with the Institute of Gas
Engineers document IGE/UP/7/1998 (also, British Gas
Service publication Part 19 - Building and Kitchen Work).
If in doubt advice must be sought from Potterton.
RSLboilersmaybeinstalledin anyroom,althoughparticular
attention is drawn to the requirements of the current IEE
WiringRegulations and,inScotland,theelectricalprovisions
of the Building Standards applicable in Scotland with
respect to the installation of the boiler in a room containing
a bath or shower.
CFL boilers must not be installed in bath, shower rooms, or
rooms used as sleeping accommodation.
RSLModels:
Wherearoom-sealedapplianceisinstalledin
a room containing a bath or shower, any electrical switch
orappliancecontrol, utilising mains electricity should beso
situated that it cannot be touched by a person using the
bath or shower.
CFL Models:
Conventional flue boilers can be installed
either in a kitchen or utility room or inside a suitably
ventilated, purpose designed or modified compartment.
Where the installation of the boiler will be in an unusual
position,specialproceduresmaybenecessary andBS6798
and BS5546 give detailed guidance on this aspect.
Acompartmentused to enclosetheboilermustbedesigned
and constructed specifically for this purpose. An existing
compartment may be used provided that it is modified for
the purpose. Details of essential features of compartment
design including airing cupboard installations are given in
BS6798 and BS5546 and should be complied with.
RSLModels:
Iftheboilerisfittedunderaworksurfaceitmay
be located next to or between kitchen cabinets or fittings
providing that the front of the boiler case is visible and
unobstructed, the special requirements for an enclosed
compartment will not apply
If the boiler is to be fitted under a worksurface, the
worksurface may need to be removed to install the boiler.
It is advisable that the worksurface be removable to allow
access for servicing if required.
If the boiler is to be fitted in a run of kitchen units it is
recommended that the boiler is fitted first or the adjacent
units removed.