Installation of Gas Piping
IMPORTANT
All gas piping must be installed in accordance with the latest edition of the National Fuel Gas Code ANSI/Z223.1 and any local codes that may
1.Determine the Supply Gas Requirements
The unit’s nameplate states the requirements for the gas being supplied to the unit.
Minimum gas pressure for maximum output
apply. In Canada, the equipment shall be installed in accordance with the Installation Code for Gas Burning Appliances and Equipment (CGA B149) and Provincial Regulations for the class. Authorities having jurisdiction should be consulted before installations are made.
IMPORTANT
All piping should be clean and free of any foreign material. Foreign material entering the gas train can cause damage.
Warning
MAX BTU/HR |
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BTU/H MAX |
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NORMAL MANIFOLD |
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PRESSURE |
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PRESSION DÕADMISSION |
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NORMALE |
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MIN GAS |
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PRESSURE |
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PRESSION DE GAZ |
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TYPE OF GAS |
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NATURE DU GAZ |
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EQUIPPED FOR |
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CONCU POUR |
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MIN BTU/HR
BTU/H MIN
MIN GAS PRESSURE
FOR MAX OUTPUT
PRESSION DE GAZ MIN
POUR PUISSANCE MAX
MAX GAS
PRESSURE“W.C.
PRESSION DE GAZ MAX
PSI
DESIGN ΔT
ΔT NORMALE
F
EXTERNAL STATIC PRESSURE
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PRESSION STATIQUE EXTERIEURE
All components of this or any other gas fired heating unit must be leak tested prior to placing the unit into operation. A soap and water solution should be used to perform this test. NEVER test for gas leaks with an open flame.
IMPORTANT
Do NOT connect the unit to gas types other than what is specified and do NOT connect the unit to gas pressures that are outside of the pressure range shown on the label.
Warning
When leak testing pressures equal to or less than 14 in. wg (3.5 kPa), first close the
Note
When connecting the gas supply, the length of the run must be considered in determining the pipe size to avoid excessive pressure drop. Refer to a Gas Engineer’s Handbook for gas pipe capacities.
Note
Each furnace has a single
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Type of gas | Maximum gas pressure |
Indirect Gas Nameplate
2. Install Additional Regulator if Required
When the supply gas pressure exceeds the maximum gas pressure shown on the unit’s nameplate, an
additional regulator (by others) is required to reduce | ||||
the pressure. The |
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regulator must have a | ||||
(in. wg) | ||||
listed leak limiting device | ||||
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Minimum | Maximum | |||
or it must be |
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vented to the | Natural | 6 | 14 | |
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LP | 10 | 14 | ||
outdoors. | ||||
3. Connect the Supply Gas Line
A manual shut off valve (gas cock), 1/8 inch plugged test port and 6 inch drip leg must be installed prior to the gas train. The valve and the test port must be accessible for the connection of a test gauge. Supply gas
connections must be made by
a qualified installer and are not
furnished by manufacturer.
4. Test the System for Leaks
Check both the supply lines and the factory piping for leaks. Apply a soap and water solution to all piping and watch for bubbling which indicates a leak.
Warning
NEVER test for a gas leak with an open flame.
Warning
The factory piping has been checked for leaks, but should be rechecked due to shipping and installation.
Model IG / IGX
