Installation shall be in accordance with the current editions of:-
Building Standards (Scotland) (Consolidation) Regulations
Building Regulations
Gas Safety (Installation and Use) Regulations (as amended)
BS7671 Institute of Electrical Engineers (IEE.) Wiring Regulations
BS6891 Installation of Low Pressure Gas Pipework of up to 28mm (R1) in domestic premises (2nd family gases).
BS5440 Pt.1 (Flues for Gas Appliances)
BS5440 Pt.2 (Air Supply for Gas Appliances)
BS5864 Installation of Gas Fired Ducted Air Heaters
British System Design Manual “Gas Fired Warm Air Heating”
Model and Local Authority Bye-laws
IMPORTANT: STATUTE LAW DEFINES THAT ALL GAS APPLIANCES MUST BE INSTALLED BY COMPETENT
PERSONS, (i.e. CORGI REGISTERED INSTALLERS) IN ACCORDANCE WITH THE GAS SAFETY (INSTALLATION
AND USE) REGULATIONS (CURRENT EDITION). FAILURE TO COMPLY WITH THESE REGULATIONS MAY
LEAD TO PROSECUTION.
2.
HEATER COMPARTMENT AND CLEARANCES
(See BS5864)
2.1
A minimum clearance of 15mm (
5
/
8
in) at either side of the heater, and 150mm (6in) above the heater, should be allowed.
For service access, a minimum of 450mm (18in) is required at the front of the heater, and 75mm at the left hand side.
Space must also be allowed, in a compartment installation, to permit the removal of the heater. If a Cleanflow electronic
air filter is to be fitted in the compartment, allowance must be made for this in the width of the compartment. The
compartment must be of a fixed rigid structure and the internal construction must be of half-hour fire resistance to
internal fire; the inside lining or finishing of the enclosure must be noncombustible or a class 1 finish (see also BS 476).
2.2
In airing cupboard installations, the part used as the air heater compartment must comply with the relevant section of
BS 5864 and must be completely separated by either a noncombustible partition or a perforated metal partition with the
perforations not exceeding 13mm (0.5in).
2.3
In under-stair installations, the compartment must comply with the relevant section of BS5864, provided that, in addition,
all internal surfaces, including the base, are of, or lined with noncombustible material.
3.
VENTILATION AND COMBUSTION AIR
3.1
A room sealed appliance does not require a combustion air vent in the room or internal space in which it is installed. If
the appliance is installed in a compartment, the minimum total free area of the high and low level ventilation air vents
must be as specified in Table 1 below, (in reference to BS5440 Pt 2, Table 1).
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Position of
Air from room
Air direct
air vents
or internal space
from outside
High level
89cm
2
(14 in
2
)
45cm
2
(7 in
2
)
Low level
89cm
2
(14 in
2
)
45cm
2
(7 in
2
)
TABLE 1
MINIMUM EFFECTIVE AREAS
4.
ADAPTING TO RIGHT HAND AIR ENTRY
4.1
Remove the return air spigot and the short side cover from the left hand side of the appliance, and lay to one side.
4.2
Remove the long side cover from the right hand side of the appliance, and reassemble it on the left hand side, ensuring
that the
slots are towards the front
of the appliance.
4.3
Reassemble the short side cover and the return air spigot ton the right side of the appliance, ensuring that the
slots in the
side cover are towards the front
of the appliance.
5.
DUCT SYSTEM
(See British Design Manual - Gas Fired Warm Air Heating).
IMPORTANT: All duct work MUST be mechanically secured, and sealed with ducting tape.
5.1
RETURN AIR
5.1.1
Room sealed appliances may be installed without return air ducting, provided that the path between the return air
grille and the appliance return air inlet is protected in such a manner that the required airflow will be maintained at
all times. Where no ducting is fitted, a finger guard (Ref. FGJ, available from Johnson and Starley Ltd.), MUST be
fitted.
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Fig. 7 JANSTAR functional flow circuit diagram
268
44
40
122
600
830
Return air
plenum
Warm air
plenum
Fixing holes
in rear face
440
75
285
190
Flue
Spigot
Rear face
Fig. 8 Principal dimensions (mm)
