1450mm
870mm
400mm
+ 30mm
above elbow
5mm
5mm
20mm
to removable door
200mm
600mm
front clearance
for service
This boiler is only suitable for installing internally
within a property at a suitable location onto a
fixed, rigid surface at least the same size as 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 to install, service
and maintain the boiler and any ancilliary
equipment.
• If fitting the boiler into an airing cupboard
use a non-combustible material (which can be
perforated with holes upto 13mm diameter) to
seperate the boiler from the airing space.
BOILER CLEARANCES:
The diagram opposite shows the minimum
space required to install and service the boiler.
If a boiler is installed in a compartment with
clearances less than shown in the tables oppo-
site, ventilation is required. Refer to tables
below for ventilation requirements.
BOILER CLEARANCES - UNVENTILATED
COMPARTMENTS:
The tables opposite show the options for the
minimum space required to install and service
the boiler inside an unventilated compartment.
*
NOTE:
These are the combined top & bottom
clearances excluding the appliance.
**
NOTE:
These are the combined left & right
clearances excluding the appliance.
BOILER LOCATION &
CLEARANCES
SERVICING CLEARANCES
VENTED COMPARTMENT
Using 100mm flue kit
980mm
Using 125mm flue kit
- 1010mm
VENTILATION FREE COMPARTMENTS
INSTALLATION CLEARANCES
Ventilation Free Compartment Installation Clearances
The suggested total unventilated compartment minimum clearances are:
Side
Above
Below
Front (to removable door)
400mm
170mm approx.
200mm
100mm
(30mm above
the elbow)
(Note: Top and bottom clearances must not be reduced below these values as they are the
minimum required for servicing).
If Side Clearances are Reduced
350mm 441mm
129mm
300mm
523mm
161mm
250mm
617mm
200mm
200mm
727mm
243mm
150mm
856mm
295mm
100mm
1012mm
358mm
50mm
1202mm
434mm
If total side clearance is
reduced to:
Then overall height clearances
must be increased to (approx):
OR
Front clearance (to removable
door) must be increased to:
If Front Clearance is Reduced
50mm 511mm
505mm
25mm
596mm
569mm
If front clearance (to
removable door) is
reduced to:
Then overall height clearances
must be increased to (approx):
OR
Total side clearance must be
increased to:
** *
* **
BOILER LOCATION & CLEARANCES
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR Ri
8 716 115 168a (06/2008)
10
P
R
E -
IN
ST
AL
LA
TI
O
N
Ri
Vent
To room or
Direct to
position
internal space
outside
High
Minimum free
Minimum
level
area 122 cm
2
free area
61 cm
2
Low
Minimum free
Minimum
level
area 122 cm
2
free area
61cm
2
