Jacuzzi J-HN250C User Manual

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INST 396 Jacuzzi® J-HN Series Heater V12-16
GAS CONNECTION
The gas connection is on the left side of the heater. A ¾3/4” FI. connection is provided for gas line connection. An approved manual
shut off valve must be installed in the gas fitting line before the heater.
The gas fitting line should be installed by an authorized person and comply with local regulations The gas line from the Gas meter
will usually be of a larger size than the gas inlet connection.
The heater gas valve has a built in pressure regulator and 2 x ⅛” pressure test points. On starting the heater, a manometer must be
used and the supply inlet pressure checked while the heater is running against the heater data plate. Incorrect inlet pressures may
void warranty and may result in service charges, should service be required. Gas valves are pre-set and should only be adjusted by
trained Jacuzzi technicians or qualified gas fitters.
Propane (LPG) is heavier than air and will pool in low spots. Do not place heater in a pit or other locations where leaking gas
might collect as this can lead to an explosion.
GAS PIPE SIZING TABLES
Natural Gas Pipe Sizing – Low Pressure from Meter (iron or plastic pipe)
DISTANCE FROM
GAS
MODEL
Jacuzzi J-HN250
Jacuzzi J-HN400
METER TO HEATER
BTU/hr (nom)
250,000
399,000
0 to 50 ft
1”(25mm)
1 1/4”(31mm)
50 to 100ft
1 1/4”(31mm)
1 1/4”(3.1mm)
100 to 200 ft
1 1/2”(37mm)
1 1/2”(37mm)
200 to 300 ft
1 1/2”(37mm)
2”(50mm)
5” Static Pressure with 0.5” pressure drop during heater operation
Assumes no other gas appliance connected to Gas Line
Propane Gas Pipe Sizing – Low Pressure Single Stage regulation 11” gas Line Supply
DISTANCE FROM
GAS
MODEL
Jacuzzi J-HN250
Jacuzzi J-HN400
TO HEATER
BTU/hr (nom)
250,000
399,000
IRON PIPE
TUBE
IRON PIPE
TUBE
1”(25mm)
1 1/8”
(28mm)
1”(25mm)
1”(25mm)
1 1/8”
(28mm)
1 1/4”
(31mm)
1 1/4”
(31mm)
1 ½”
(37mm)
1 1/4”
(31mm)
1 ½”
(37mm)
11” Static Pressure with 0.5” pressure drop during heater operation
Assumes no other gas appliance connected to Gas Line
Gas Pipe Sizing Tables are indicative only. All pipe sizing should be calculated by an authorized person.
WARNING: Propane is heavier than air and will settle if heater is installed in a pit or low position. Do not install a
propane heater in an area where gas may accumulate. Propane Installations must comply with ANSI/NFPA 58 in US and local
authority regulations and standards

Jacuzzi J-HN250C Specifications

General

Brand	Jacuzzi
Model	J-HN250C
Category	Heater
Language	English