Publication No. 5105703
7
1.6
Air Supply
The air requirements must meet BS 5440 Part 2.
The room in which the boiler is installed does not require a purpose provided air vent.
Ventilated Cupboard/Compartment: If the boiler is installed in a cupboard or compartment, permanent air vents are
required in the cupboard or compartment, one at high level and one at low level, either direct to the outside air or to a room.
Both high level and low level air vents must communicate with the same room or must be on the same wall to outside
air. Both the high level and low level vent must each have a free area as stated below. The free area of each vent may
be halved if the ventilation is provided directly from outside.
Models:
340: 135 cm²
50: 170 cm²
60: 206 cm²
80: 277 cm²
If the boiler is installed in a cupboard or compartment with a door, allow
at least 15 mm clearance between the front of the boiler and the door
for air movement.
1.7
Flue Systems
The flue system can be run from either the left, right, rear or top of the
boiler.
Installation Requirements
'x'
PRF0006A
'B'
'C'
148
'A'
'D'
50
*300
(310)
*50 (60)
*30 (40)
*125
(135)
*25
(35)
64
100
Electrical
Connections
Inside Control
Box
170
Return
PRF0003A
Flow
Gas Connection
R.c½
(½" BSP Female)
700
600
Maximum Length 'X'
Standard Flue
510 mm
2 Metre Flue
1995 mm
* Note: If pipework is to be run down the back of the boiler, the
normal clearance of 28 mm between the rear of the boiler and
wall can be increased to 38 mm if desired by inverting the boiler
mounting plate during installation.
Dimensions in brackets ( ) apply when the mounting plate is
inverted.
Model
40
50
60
80
Dimension
'A'
425
425
425
425
(mm)
'B'
150
150
150
150
'C'
143
143
143
143
'D'
87
87
107
107
Fig. 2
Fig. 3