Ambirad AR13 SL, Installation And Servicing Manual, Page: 3 / 20

3
These heaters are for use on natural gas
(G20) at a maximum supply pressure of
25 mbar and propane (G31) at a maximum
supply pressure of 45 mbar in G.B and I.E.
The gas connection on the Ambi-Rad heater
is R
1
/
2
( 1
/
2
in B.S.P internal thread).
Natural gas (I
2H
)
Max supply pressure 25 mbar
Min supply pressure 17 mbar
Propane (I
3p(37)
)
Max supply pressure 45 mbar
Min supply pressure 25 mbar
Propane (I
3p(50)
)
Max supply pressure 57.5 mbar
Min supply pressure 42.5 mbar
Correct gas burning pressure is indicated
in the table below.
2 Gas connection
3 Standards
Ambi-Rad heaters must be installed in
accordance with the relevant provisions
of the Gas Safety (Installations and Use)
Regulations 1998. Due account should also
be taken of any obligations arising from the
Health and Safety at Works etc. Act 1974.
In addition the installation must be carried
out in accordance with the current I.E.E.
1992 (BS 7671), BS 6896:1991 (Industrial
& Commercial for Flued Appliances)
BS EN 13410:2001 (Unflued Appliances and
IGE/UP/1) and any other relevant British
Standards and Codes of Practice.
A gas meter is connected to the service
pipe by the local gas region or local
gas region contractor. An existing meter
should be checked preferably by the
Gas Region or local Gas Region Contractors
to ensure that the meter is adequate to
deal with the rate of gas supply required.
Installation pipes should be fitted in
accordance with BS 6891:1988, such that
the minimum pressure at least, as stated
in section 2 will be achieved and any
Model Natural Gas G20 Propane G31
AR13 8.4mbar 32.9mbar
AR13QB 8.1mbar 35.2mbar
AR22 11.6mbar 31.6mbar
AR35 10.0mbar 34.0mbar
AR40 10.4mbar 28.4mbar
AR45 9.5mbar 28.0mbar
AR50 5.8mbar 28.0mbar
Correct gas pressure
AR U Tubes Heaters
other British Standards and Codes of
Practice. Pipes of smaller size than the
heater inlet gas connection should not
be used. The complete installation must
be tested for soundness as described in
the previous standard.
The gas supply must not be in the position
where it is subject to overheating.
The gas union service cock MUST be fitted
in the gas supply close to the heater, but
not onto the burner itself.
It is essential to provide some flexibility in
the final gas connection by use of a tested
and certified metallic hose to BS 6501
Part 1:1991 (minimum acceptable quality
Type ‘B’ Class 1). When stainless steel
flexible hoses are used the hose should
be connected in a 180˚ bend without any
strain or torsion. (See figure 1).
Note Take care when making a gas
connection to the heater not to apply
excessive turning force to the internal
controls.
1 AR and ARE series gas fired
radiant tube heaters
Model Natural Gas G20 Propane G31
AR13 8.4mbar 32.9mbar
AR13QB 8.1mbar 35.2mbar
AR22/24’ 10.7mbar 31.6mbar
AR22/27’ 11.6mbar 31.6mbar
AR22/32’ 10.7mbar 31.6mbar
AR22/36’ 10.7mbar 31.6mbar
AR35/33’ 13.7mbar 36.6mbar
AR35/42’ 11.2mbar 36.6mbar
AR35/50’ 11.2mbar 36.6mbar
AR40/42’ 11.3mbar 28.6mbar
AR40/50’ 11.3mbar 28.6mbar
AR45/50’ 10.1mbar 29.6mbar
AR45/60’ 10.1mbar 29.6mbar
AR50/50’ 5.8mbar 24.2mbar
AR50/60’ 5.8mbar 24.2mbar
AR SL Single Linear Heaters
Model Natural Gas G20 Propane G31
ARE13 8.4mbar 32.9mbar
ARE22 12.5mbar 31.6mbar
ARE35 12.9mbar 34.0mbar
ARE40 12.7mbar 28.4mbar
ARE45 10.7mbar 28.0mbar
ARE50 5.6mbar 28.0mbar
ARE U Tubes Heaters
Model Natural Gas G20 Propane G31
ARE13 8.4mbar 32.9mbar
ARE22 12.5mbar 31.6mbar
ARE35/42’ 13.7mbar 36.6mbar
ARE35/50’ 13.7mbar 36.6mbar
ARE40/42’ 12.7mbar 28.6mbar
ARE45/50’ 10.7mbar 29.6mbar
ARE45/60’ 10.7mbar 29.6mbar
ARE50/50’ 5.6mbar 28.0mbar
ARE50/60’ 5.6mbar 28.0mbar
ARE SL Single Linear Heaters