All installations and services must be performed by qualified service personnel.
L. GAS PIPING
GENERAL GAS PIPING
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FIRE OR EXPLOSION HAZARD
•Failure to follow the safety warnings exactly could result in serious injury, death or property damage.
•Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for the detection of leaks to check all connections.
•Because of the potential of odorant fade, a gas leak may not be detected by smell. If this furnace is installed below grade, contact your gas supplier for a gas detector.
•All gas piping must be leak tested using a soap and water solution (when the gas is turned on) following the procedure outlined in this section. A final test for gas leakage must be made after purging the gas line (Refer to Section III, E, of this manual). This test must be conducted with the unit operating and should include the furnace piping and gas valve. Never use an open flame to check for a gas leak.
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•Care must be taken not to wet electronic components during leak test. Wetting the electronic components may damage circuitry and cause a hazardous situation. Dry moisture from all leads and terminals if minor wetting occurs. Wait at least 24 hours for the circuit to fully dry before energizing the burner circuit.
•The furnace and its individual gas shutoff valve must be disconnected from the gas supply during pressure testing of the gas supply system at pressures in excess of 1/2 PSIG or 14.0 in. W.C. The furnace must be isolated from the gas supply by closing its manual shut off valve at test pressures equal to or less than 1/2 PSIG or 14.0 in. W.C.
•Do not use a connector, which has previously served another gas appliance.
All gas piping and testing must be performed by a qualified installer or service person. The installation must comply with local codes, these instructions and the National Fuel Gas Code, NFPA 54/ANSI
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