PH
-SERIES
29
12.0
GAS PIPING
WARNING:
All gas work MUST be performed by qualified/licensed personnel with adequate
training and experience in this field.
WARNING:
Use only the type of gas for which the heater is equipped. Using the wrong gas could
create a hazard, resulting in damage, personal injury or death.
In Canada refer to the
Natural Gas and Propane Installation Code,
CSA B149.1 or latest edition and in the USA,
the
National Fuel Gas Code, ANSI Z223.1/NFPA
54 or latest edition.
a)
Adequate supply of gas to the heater is required for it to produce the designed amount of heat output.
The gas meter must have a large enough capacity to handle the extra consumption required by the
heater.
b)
The gas line must be of an adequate size to deliver the necessary amount of fuel to the unit.
c)
If there is any question concerning a) or b) call your local gas company for further assistance.
d)
Make sure that all piping is supported properly.
e)
All connections must have special sealing compound applied to them.
f)
A drip leg must be installed before the heater to prevent contaminating matter interfering with the
operation of the unit.
g)
Check piping for leaks via pressure test.
Install a 1/8" (3.175 mm) N.P.T plugged tapping
immediately
ahead of heater in gas supply. Use this location for test gauge. A soap and water test can be used to verify
location of any possible leak.
WARNING:
Do not use an open flame for testing!
WARNING:
For high pressure testing, disconnect heater(s) and shut-off cocks and cap off pipe for test.
Failure to do so will damage pressure ratings on the above mentioned equipment and cause a complete
replacement of these parts.
WARNING:
The heater and its individual shutoff valve must be disconnected from the gas supply piping system during
any pressure testing for that system at test pressures in excess of ½ psig.
The heater must be isolated from the gas supply piping system by closing its individual manual shutoff valve
during any pressure testing of the gas supply piping system at test pressures equal to or less than ½ psig.
Refer to pages 30 & 31 for gas connection to heater.
