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SECTION 9: GAS PIPE WORK
17 of 42
SECTION 9: GAS PIPE WORK
It is important that the gas supply pipe and the
electrical connections do not support any of the
heater’s weight.
A gas meter is connected to the service pipe by the
gas supply company. An existing meter should be
checked, preferably by the company, to ensure that
the meter is adequate for the rate of gas supply
required.
Installation pipes must be fitted in accordance with
local and national codes. Pipe work from the meter
to the heater(s) must be of adequate size.
9.1 Connections
Connect the heater to the gas supply ensuring that
the final connections are as follows:
•Gas supply pipe work is run in medium or heavy
gau ge tubing in compliance with local and
national codes.
• The gas supply pipe is adequately sized to carry
the total volume of gas for the complete
installation.
• An isolating valve and union connection should
be used and fitted into the supply adjacent to the
heater.
•For suspended heaters, u
se an approved metal
flexible connection between the isolating valve
and the heater. To reduce pressure loss, use
one pipe size larger than the heater gas
connection.
IMPORTANT - The complete installation must be
purged and tested for gas soundness in accordance
with local and national codes.
• Check the pipe and tubing ends for leaks
before placing heating equipment into ser-
vice. When checking for gas leaks, use a
soap and water solution; never use an open
flame
WARNING
Explosion Hazard
Leak test all components of gas pipe work
before operation.
Gas can leak if pipe work is not installed
properly.
Do not high pressure test gas pipe work with
heater connected.
Failure to follow these instructions can result
in death, injury or property damage.