10
P/N 38033 Rev. C 12-1-00
Gas Requirements
Gas Line Installations
Beforeinstallingthe gasline,besureto check which
fueltheheaterhasbeendesignedtoburn.Thisis
importantbecause differenttypesoffuel require
differentpipe sizes.Theratingplateon theheaterwill
indicatewhichfuel the heaterisdesignedtoburn.The
chartonthispageshowswhichsizepipeisrequiredfor
thedistancefromthegas meter/propane tank to the
heater.
NOTE
When sizing gas lines, calculate three (3) additional
feet of straight pipe for every 90 degree elbow used.
Wheninstalling thegasline,avoidgettingdirt,greaseor
otherforeignmaterial in thepipeasthismaycause
damagetothegas valve, whichmayresultinheater
failure.
Thegasmetershouldbesizedtoassurethatit will
supplyenoughgastotheheaterandany other
appliancesthatmaybe used on the samemeter.
Thegas linefromthemeterwill usuallybeofalarger
sizethanthegas valve suppliedwiththeheater.To
assureaslittle restrictionaspossible,theconnecting
fittingsatthemeter should bethesamesizeasthemain
gaslineandthemaingaslineshouldbereducedas
closeto the heater aspossible.
CAUTION
The heater and any other gas appliances must be
disconnected from the gas supply piping system
during any pressure testing on that system.
Theheateranditsgas connection must be leak tested
before placingthe heaterinoperation. Donotuse
flame to test the gas line. Use soapy water or
another nonflammable method.
ledoM
051
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052
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053
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'01'04'05'051'051'006 ----
-'02'03'08'521'052'054'006--
-'01'02'05'07'051'052'005'006-
-- '01'03'05'001'002'053'004'006
-- '01'02'03'07'521'052'052'005
--- '01'02'06'001'051'002'054
Testing Gas Pressure
1. Push the power switchto “OFF”.
2. Turnthe gas valve knob to “OFF”.
3. Remove the pressure tap plugontheburnerside of
thegas valve.
4. Attach the Manometer.
5. Turnthe gas valve knob to “ON”.
6. Fire the heater andread the Manometer.
Natural Propane
Maximum inlet gas pressure 10 in. WC 14 in. WC
Minimum inlet gas pressure **5 in. WC 12 in. WC
Normal manifold pressure 4 in. WC 11 in. WC
** 6 WC for 400 model
*All Readings are taken with the heater firing. Any adjustments
made with heater off will give incorrect readings.
Pipe Sized For Length Of Run In Equivalent Feet
WARNING
Do not install the gas line union inside the heater
cabinet. This will void your warranty.
Gas Pressure Requirements*
