Gas Piping - Carrier 58SP0B Installation, Start-Up, Operating And Service And Maintenance Instructions

58SP0B/58SP1B: Installation, Start–Up, Operating and Service and Maintenance Instructions
Fig. 17 – Duct Flanges
Downflow Furnaces
The return-air duct must be connected to return-air opening bottom inlet,
see Fig. 1. DO NOT cut into casing sides (left or right). Side opening is
permitted for only upflow and certain horizontal furnaces. Bypass
humidifier connections should be made at ductwork or coil casing sides
exterior to furnace, see Fig. 18.
Upflow and Horizontal Furnaces
The return-air duct must be connected to bottom, sides (left or right), or a
combination of bottom and side(s) of main furnace casing, see
Bypass humidifier may be attached into unused return air side of the
furnace casing, see Fig. 19 and
furnace models are approved for side return air connections, see
and Fig. 20.
Fig. 18 – Downflow Return Air Configurations and Restriction
Fig. 19 – Upflow Return Air Configurations and Restrictions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Fig. 20. Not all upflow and horizontal
Fig. 20 – Horizontal Return Air Configurations and Restrictions

GAS PIPING

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Gas piping must be installed in accordance with national and local
codes. Refer to current edition of NFPA 54/ANSI Z223 in the U.S.
Installations must be made in accordance with all authorities having
jurisdiction. If possible, the gas supply line should be a separate line
running directly from meter to furnace.
NOTE: In the state of Massachusetts:
1. Gas supply connections MUST be performed by a licensed
plumber or gas fitter.
2. When flexible connectors are used, the maximum length shall not
Fig. 1. exceed 36 in. (915 mm).
3. When lever handle type manual equipment shutoff valves are used,
they shall be T-handle valves.
Fig. 19
4. The use of copper tubing for gas piping is NOT approved by the
state of Massachusetts.
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death,
and/or property damage.
Never purge a gas line into a combustion chamber. 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. A
fire or explosion may result causing property damage, personal injury
or loss of life.
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FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death,
and/or property damage.
Use proper length of pipe to avoid stress on gas control manifold and
gas valve.
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death,
and/or property damage.
Gas valve inlet and/or inlet pipe must remain capped until gas supply
line is permanently installed to protect the valve from moisture and
debris. Also, install a sediment trap in the gas supply piping at the inlet
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to the gas valve.
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WARNING
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WARNING
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WARNING
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