Supplied By www.heating spares.co Tel. 0161 620 6677
10
221504A
D
D
E
E
A
PERMANENT
SURFACE
B
MINIMUM CLEARANCES
A
B
C
D
E
500
78
*
10
5
*
*
To a permanent surface
SIDE FLUE - 220mm
REAR FLUE - 120mm
WHERE EXTERNAL ACCESS TO
THE FLUE IS NOT PRACTICAL THEN
CLEARANCE OPPOSITE THE EXIT
MUST BE ADEQUATE TO PERMIT
INSTALLATION OF THE FLUE ASSEMBLY
0073
Diagram 3.1
CLEARANCES
TABLE 5. COMPARTMENT AIR VENTS
VENTILATION
REQUIREMENTS
cm
2
in
2
cm
2
in
2
VENTILATION
FROM ROOM
OR SPACE
HIGH LEVEL LOW LEVEL
VENT AREA VENT AREA
195 30 195 30
98 15 98 15
VENTILATION
FROM
OUTSIDE
3 Boiler Location
3.1 Boiler Location
The boiler may be installed in any room although particular
attention is drawn to the requirements of the current issue of
BS7671 with respect to the installation of a boiler in a room
containing a bath or shower. Any electrical switch or boiler
control using mains electricity should be so situated that it
cannot be touched by a person using the bath or shower.
The electrical provisions of the Building Standards (Scotland)
are applicable to such installations in Scotland.
The boiler must be mounted on a flat wall which is sufficiently
robust to take its total weight, see Data Table 1.
3.2 Boiler Clearances
The boiler must be positioned so that at least the minimum
operational and servicing clearances are as shown in diagram
3.2.
Additional clearance may be required around the boiler for
installation purposes, dependant upon site conditions.
3.3 Timber Frame Buildings
If the boiler is to be installed in a timber frame building, it should
be fitted in accordance with the British Gas Publication “Guide
for Gas Installation in Timber Framed Housing” reference DM2.
If in doubt, seek advice from the local gas undertaking or
Hepworth Heating Ltd.
3.4 Room Ventilation
The boiler is room sealed, so when installed in a room or space
a permanent air vent is not required.
3.5 Cupboard or Compartment Ventilation
Where the boiler is fitted in a cupboard or compartment,
permanent high and low level ventilation must be provided. The
ventilation areas required are given in Table 5.
Where the installation of the boiler will be in an unusual location,
special procedures are necessary, refer to the current issue of
BS6798 for guidance.
Make sure that the cupboard or compartment air vents are
positioned to be clear of obstructions at all times.
A compartment used to enclose the boiler must be designed
and constructed specifically for this purpose.
An existing cupboard or compartment modified for the purpose
may be used. Refer to the current issue of BS6798 for
guidance.
The doorway opening should be of sufficient size to allow for
easy removal of the boiler.
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