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BOILER LOCATION AND CLEARANCES
WORCESTER BOSCH GREENSTAR HIGHFLOW 440
6 720 611 731a (08.04)
6
BOILER LOCATION AND CLEARANCES
This boiler is only suitable for installing internally
within a property at a suitable location onto a
fixed, rigid non-combustable surface at least the
same size of the boiler and capable of
supporting the boiler weight.
Compartments:
Follow the requirements of BS6798 and
BS5440 Part 2 and note:
Minimum clearances must be maintained.
An access door is required for servicing and
maintenance of the boiler.
If fitting the boiler into an airing cupboard use
a non-combustable perforated material
(maximum hole sizes of 13mm) to separate the
boiler from the air space.
Service clearances. See Fig. a.
The diagram opposite shows the minimum
space required to service the boiler only.
Unvented compartment clearances. See Fig. b.
The diagram opposite shows the minimum
space required to install and service the boiler
inside an unvented compartment.
*Space required for unvented areas with a
removable door or panel.
**This space can be reduced to 50mm for one
side only as long as both the side clearances
add up to the total of both the side
measurements shown or more.
Airing cupboard clearances. See Fig. c.
The diagram opposite shows the minimum
space required to install and service the boiler
within an airing cupboard.
Venting compartments. See Fig. d.
If the clearances are less than those stated for
options c & d then ventilation must be provided
as described in BS5440:
A minimum of 2 air vents (C) must be fitted,
one at low level and another at high level onto
the same wall using the same air for circulation.
Minimum free air required for both vents:
For air directly from outside: 148cm
2
per vent.
For air from internal space/room: 296cm
2
per vent.
GENERAL NOTES
Fig. a.
Fig. b.
Fig. c.
Fig. d.
INTRODUCTION