the outlet of the trap is at least 1 in. (25 mm) lower than the
If the installation requires draining the condensate water away from the unit, install a
Install Flue Hood
!WARNING
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury or death.
The venting system is designed to ensure proper venting. The flue hood assembly must be installed as indicated in this section of the unit installation instructions.
Install the flue hood as follows:
1.This installation must conform with local building codes and with the National Fuel Gas Code (NFGC), NFPA 54/ANSI Z223.1 (in Canada, CAN/CSA B149.1, and B149.2) or latest revision. Refer to provincial and local plumbing or wastewater codes and other applicable local codes.
2.Remove flue hood from shipping location (inside the return section of the blower
3.Secure flue hood to flue panel by inserting a single screw on the top and the bottom of the hood.
TRAP
OUTLET
A09052
Fig. 9 - Condensate Trap
Install Gas Piping
The gas supply pipe enters the unit through the access hole provided. The gas connection to the unit is made to the
Install a gas supply line that runs to the heating section. Refer to Table 2 and the current edition of NFGC in the U.S. and the current
NSCNGPIC in Canada. Do not use
For natural gas applications, the gas pressure at unit gas connection must not be less than 4.0 IN. W.C. or greater than 13 IN. W.C. while the unit is operating. For propane applications, refer to propane conversion kit instructions.
A
When installing the gas supply line, observe local codes pertaining to gas pipe installations. Refer to the NFPA 54/ANSI
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 exceed 36 in. (915 mm).
3.When lever handle type manual equipment shutoff valves are used, they shall be
4.The use of copper tubing for gas piping is NOT approved by the state of Massachusetts.
In the absence of local building codes, adhere to the following pertinent recommendations:
1.Avoid low spots in long runs of pipe. Grade all pipe 1/4 in. (6.35 mm) for every 15 ft (4.6 m) of length to prevent traps. Grade all horizontal runs downward to risers. Use risers to connect to heating section and to meter.
2.Protect all segments of piping system against physical and thermal damage. Support all piping with appropriate straps, hangers, etc. Use a minimum of one hanger every 6 ft. (1.8 m). For pipe sizes larger than 1/2 in., follow recommendations of national codes.
3.Apply joint compound (pipe dope) sparingly and only to male threads of joint when making pipe connections. Use only pipe dope that is resistant to action of liquefied petroleum gases as specified by local and/or national codes. Never use Teflon tape.
4.Install sediment trap in riser leading to heating section (See Fig. 10). This drip leg functions as a trap for dirt and condensate.
5.Install an accessible, external, manual main shutoff valve in gas supply pipe within 6 ft (1.8 m) of heating section.
6.Install
7.Pressure test all gas piping in accordance with local and national plumbing and gas codes before connecting piping to unit.
NOTE: Pressure test the gas supply system after the gas supply piping is connected to the gas valve. The supply piping must be disconnected from the gas valve during the testing of the piping systems when test pressure is in excess of 0.5 psig. Pressure test the gas supply piping system at pressures equal to or less than 0.5 psig. The unit heating section must be isolated from the gas piping system by closing the external main manual shutoff valve and slightly opening the
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