Fedders FV95A090 - Manual (Page 30)

WARNING
THIS FURNACE IS FACTORY EQUIPPED TO BURN NATURAL
GAS ONLY.
CONVERSION TO L.P. GAS REQUIRES SPECIAL KIT No.
FAILURE TO USE THE PROPER CONVERSION KIT CAN
CAUSE FIRE, EXPLOSION, CARBON MONOXIDE
POISONING, PROPERTY DAMAGE, PERSONAL INJURY OR
LOSS OF LIFE.
CAUTION
CONVERSION OF THIS FURNACE REQUIRES SPECIALIZED
EQUIPMENT. A TRAINED AND QUALIFIED INSTALLER,
SERVICE AGENCY OR GAS SUPPLIER MUST COMPLETE
CONVERSION.
CAUTION
CONNECT THIS FURNACE ONLY TO GAS SUPPLIED BY A
COMMERCIAL UTILITY OR SUPPLIER. PRIVATE GAS WELLS
DO NOT GENERALLY PROVIDE GAS WITH CONSISTENT,
UNIFORM AND PREDICTABLE HEATING VALUES AND
DENSITIES. MANY NON-COMMERCIAL WELLS CONTAIN
IMPURITIES SUCH AS SULPHUR, WHICH MAY DAMAGE
THE FURNACE. THIS FURNACE CANNOT OPERATE
PROPERLY OR SAFELY USING FUELS OUTSIDE NORMAL
COMMERCIAL STANDARDS.
GAS SUPPLY
Gas Piping
In the United States, the gas piping should be installed in
accordance with ANSI Z223.1 / NFPA 54 and any local codes.
In Canada, the gas piping should be installed in accordance
with CAN/CSA-B149, and in accordance with any local codes.
The gas piping may enter the furnace from either side.
Install a BMI ground joint union between the gas valve and
the side panel to allow easy removal of the burner for
service purposes.
CAUTION
ENSURE THAT THE MANUAL SHUTOFF VALVE AND GAS
VALVE ARE NOT SUBJECTED TO HIGH PRESSURES.
DISCONNECT THE MANUAL SHUTOFF VALVE AND GAS
VALVE DURING ANY PRESSURE TESTING THAT EXCEEDS
1/2 P.S.I.G. (3.45 KPA
).
w.c.; 12 inches w.c. is recommended.
These pressures must be maintained while all other gas
fired appliances are operating at maximum conditions.
exceed 10.5 inches w.c. inlet pressure with NG.
The gas valve has an adjustable internal regulator for
controlling burner manifold pressure. Burner manifold
pressure is listed on the furnace rating plate.
Leak Testing
All new gas piping installations should be pressure tested as
specified by CAN/CGA-B149 or NFPA 54 ANSI Z223.1 or
ANSI/NFPA 58, Standard for the Storage and Handling of
Liquefied Petroleum Gases.
ALWAYS USE A BACKUP WRENCH TO PREVENT
TWISTING OF THE CONTROL ASSEMBLY AND GAS
VALVE. ANY STRAINS ON THE GAS VALVE CAN AFFECT
POSITIONING OF THE ORIFICES RELATIVE TO THE
BURNERS. THIS COULD RESULT IN FAULTY BURNER
OPERATION.
IMPORTANT
Install a manual gas shutoff valve and drip leg as close to
the furnace as possible. Some local codes call for the
manual gas shutoff valve to be located between 4 to 5 feet
above floor level to prevent tampering by small children.
Ensure that the valve is readily accessible.
If local codes allow the use of a flexible gas appliance
connector, always use a new listed connector. Do not use a
connector which has previously serviced another gas
appliance.
28
The L.P. gas inlet supply pressure should be 11 to 13 inches
The natural gas inlet supply pressure should be 5 to 10.5
inches water column (w.c.); 7 inches w.c. is recommended.
Do not exceed 13 inches w.c. inlet pressure with LP. Do not
194301570001.