Worcester Greenstar Highflow 440

PRE-
INSTALLATION
INSTALLATION & SERVICING INSTRUCTIONS
12
BOILER LOCATION & CLEARANCES
6-720-611-730b (12.05)
 This boiler is only suitable for installing internally
within a property at a suitable location onto a
fixed rigid non-combustible surface at least the
same size as the boiler and capable of supporting
the boiler weight.
 The boiler is not suitable for external installation
unless a suitable enclosure is provided.
 THIS BOILER IS NOT SUITABLE FOR ROOF
SPACE INSTALLATION.
Compartments:
Follow the requirements of BS6798 and BS5440
Part 2 and note:
 Minimum clearances must be maintained.
 An access door is required to install, service
and maintain the boiler and any ancillary
equipment.
 If fitting the boiler into an airing cupboard use
a non-combustible perforated material (maximum
hole sizes of 13mm) to separate the boiler from
the airing space.
a: INSTALLATION CLEARANCES:
Diagram 'a' shows the minimum space required to
install the boiler only.
b: SERVICE CLEARANCES:
Diagram 'b' opposite shows the minimum space
required to service the boiler only.
c: UNVENTED COMPARTMENT
CLEARANCES:
Diagram 'c' 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.
d: AIRING CUPBOARD CLEARANCES:
Diagram 'd' opposite shows the minimum space
required to install and service the boiler within an
airing cupboard.
e: VENTING COMPARTMENTS:
If the clearances are less than those stated for
options 'c' & 'd' (above) then ventilation must be
provided as described in BS 5440.
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 venting:
For air directly from outside: 148cm2 per vent.
For air from internal space/room: 296cm2 per vent.
BOILER LOCATION &
CLEARANCES
600mm
800mm
800mm
900mm
50mm
100mm**
100mm**
200mm*
25mm
100mm
200mm
100mm
25mm
100mm
625mm
800mm
A
600mm
100mm
100mm
800mm
1200mm
600mm
15mm
5mm
5mm
610mm
1200mm
a: INSTALLATION CLEARANCES
b: SERVICE CLEARANCES
c: UNVENTED
COMPARTMENT CLEARANCES
C
B
D
2300mm
e: VENTING
COMPARTMENTS
1450mm
865mm
d: AIRING CUPBOARD
CLEARANCES