Siting The Flue Terminal; Air Supply - Worcester WR325 RSF Installation And Servicing Instructions

5

Siting the Flue terminal

See Fig. 4
5.1 The flue must be installed as specified in BS 5440:Part
1 and the Building Regulations.
5.2 The terminal must not cause an obstruction or the
discharge cause a nuisance.
5.3 If the terminal is fitted within 1000mm of a plastic or
painted gutter or within 500mm of painted eaves then an
aluminium shield at least 1000mm long should be fitted to the
TERMINAL POSITION
A -
directly below an openable window or
other opening e.g. air brick.
B - Below gutters, soils pipes or drain pipes.
C - Below eaves.
D -
Below balconies or car port roof.
E -
From vertical drain pipes and soil pipes.
F - From internal or external corners.
G - Above ground, roof or balcony level.
H -
From a surface facing a terminal.
6

Air supply

6.1 The appliance does not require a separate vent for
combustion air.
6.2 The appliance can be fitted in a cupboard with no vents
for cooling but the minimum clearances must be increased to
those given below. (Note: The clearances at the front are for a
removable panel, e.g. a door).
Above the Turret
Above casing
Below casing
Right-hand side
Left-hand side
In front
8
Supplied By www.heating spares.co Tel. 0161 620 6677
MIN. DISTANCE
I - From a terminal facing a terminal.
300 mm (12 in.)
J - From an opening in a car port (e.g. door
75 mm (3 in.)
K - Vertically from a terminal on the same
25 mm (1 in.)
25 mm (1 in.)
L - Horizontally from a terminal on the same
25 mm (1 in.)
25 mm (1 in.)
M - From door, window or air vent (achieve
300 mm (12 in.)
600 mm (24 in.)
30 mm
235 mm
200 mm
75 mm
75 mm
250 mm
Table 5
underside of the gutter or painted surface.
5.4 If a terminal is fitted less than 2 metres above a surface
to which people have access then a guard must be fitted. See
Section 2.9.
5.5 The terminal guard must be evenly spaced about the
flue terminal and fixed to the wall using plated screws.
5.6 In certain weather conditions a terminal may steam and
siting where this could cause a nuisance should be avoided.
5.7 Take care to ensure that combustion products do not
enter ventilated roof voids.
TERMINAL POSITION
window) into dwelling.
wall.
wall.
where possible.
6.3 If the appliance is to be fitted in a cupboard or
compartment with less clearance than those in table 5 (minimum
clearances are given in Section 5. Siting the Appliance) then
permanent air vents for cooling are required. One at high level
and one at low level, either direct to outside air or to a room.
Both vents must pass to the same room or be on the same wall
to the outside air.
6.4 The minimum free areas required are given below.
POSITION OF AIR FOM THE
AIR VENTS ROOM
HIGH LEVEL 220 cm²
LOW LEVEL 220 cm²
6.5 Refer to BS 6798 and BS 5440:2 for additional
information.
Fig. 4
MIN. DISTANCE
1200 mm (47 in.)
1200 mm (47 in.)
1500 mm (60 in.)
300 mm (12 in.)
300 mm (12 in.)
AIR DIRECT
FROM OUTSIDE
110 cm²
110 cm²
Table 6