Publication No. 5105703
5
Installation Requirements
1.2
Codes of Practice
The boiler must be installed in accordance with: The Gas
Safety (Installation and Use) Regulations 1998 and the
current issue of:-
The Building Regulations, Building Standards (Scotland)
Regulations, Local Building Regulations, Model and local
Water Undertaking Bye-laws, IEE Wiring Regulations and
Health & Safety Document No. 635 "The Electrician At
Work Regulations 1989".
1.3
Gas Supply
The meter and supply pipes must be capable of delivering
this quantity of gas in addition to the demand from any other
appliances in the house and must be governed at the meter.
The complete installation must be tested for gas soundness
and purged as described in BS6891.
1.4
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.
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.
1.5
Location of Boiler
The boiler is not suitable for external installation and should
not be fitted directly above a cooking appliance.
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 must be mounted on a flat wall which is sufficiently
robust to take the weight of the boiler.
The boiler is suitable for installation to 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 25 mm
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.
The boiler may be installed in any room, although particular
attention is drawn to the requirements of the current IEE
Wiring Regulations and, in Scotland, the electrical provisions
of the Building Standards applicable in Scotland with
respect to the installation of the boiler in a room containing
a bath or shower.
Where a room-sealed appliance is installed in a room
containing a bath or shower, any electrical switch or
appliance control, utilising mains electricity should be so
situated that it cannot be touched by a person using the bath
or shower.
Where the installation of the boiler will be in an unusual
position, special procedures may be necessary and BS6798
and BS5546 give detailed guidance on this aspect.
A cupboard or compartment used to enclose the boiler must
be designed and constructed specifically for this purpose.
An existing cupboard or compartment may be used provided
that it is modified for the purpose. Details of essential
features of cupboard/compartment design including airing
cupboard installations are given in BS6798 and BS5546
and should be complied with.
The boiler requires the clearances shown after installation
for correct operation and servicing:
Front:
610 mm
Sides:
5 mm
Top:
50 mm unless optional pump cover is fitted
when clearance should be 178 mm
Bottom: 100 mm
Additional clearances are required during installation of
this boiler and 127 mm is required at the top for access
to the pipe connections.
