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INST 396 Jacuzzi® J-HN Series Heater V12-16
VENTING GUIDELINES FOR ALL OUTDOOR INSTALLATIONS (EXCEPT OUTDOOR SHELTER INSTALLATIONS).
HORIZONTAL OR VERTICAL VENTING (CATEGORY III) REQUIREMENTS:
The heater requires the use of a Jacuzzi® J-HN series indoor vent adaptor kit to adapt the built-in stackless vent for use with 5”
(125mm) category III vent pipe. The maximum vent run must not exceed 50 ft of equivalent straight vent pipe. pipe for all models
except HiNRG 400 Propane where Max Vent run for HiNRG 400 Propane is 28 feet( 8.5 meters)
Install the vent pipe to comply with all local codes and the provisions of the National Fuel Gas Code, ANSI Z223.1/NFPA 54 for US
installations, and Natural Gas and Propane Installation Code, CSA B149.1 for Canadian installations. Additionally, the Category III
listed vent fittings, vent terminals and vent pipe often has installation requirements stated from the manufacturer of those
components – these must also be followed. Maintain all clearances between the vent pipe and combustion surfaces required by the
manufacturer’s instructions and all code requirements.
Do not exceed the maximum stated vent runs (stated in equivalent straight pipe runs), taking into consideration all elbows and other
fittings that contribute to frictional losses and reduced exhaust efficiency.
Each 90 degree elbow reduces the maximum possible horizontal vent run by an equivalent 10 ft.(3.04 meters)
Each 45 degree elbow reduces the maximum possible horizontal vent run by an equivalent 5 ft. (1.52 meters)
The Vent Chart gives the maximum allowable vent runs taking into consideration the effect of added elbows.
Maximum Reduced Horizontal or Vertical Vent Run - 5 in (125mm) Category III Vent
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