Page 16
ENGLISH
Jandy
®
Pro Series, JXi
™
Gas-Fired Pool & Spa Heater
|
Installation & Operation Manual
4.
Install a sediment trap and union ahead of the gas
controls and outside the heater panels, as shown
in Figure 11. Do not use a restrictive gas cock.
DO NOT USE FLEXIBLE GAS PIPING, it will
restrict the gas flow to the heater.
PIPE
UNION
SEDIMENT TRAP
Figure 11. Manual Shut-off Valve and Sediment Trap
NOTE:
Close shutoff valve and disconnect the heater to
isolate the heater before pressure testing the gas
supply system.
5.
Connect a manometer to the supply pressure port
on the gas valve. While the heater, and when
possible, while all other gas burning appliances
supplied by the common gas delivery system,
are operating, confirm the gas supply pressure is
correct according to Table 5.
Gas Pressure
Natural
Propane
Inches W.C.
Maximum inlet
10.5
14
Minimum inlet
4
4
Gas Offset
– 0.2
– 0.2
Notes:
•
All readings must be taken while the heater is operating.
•
Any adjustments or readings made while the heater is off
will result in poor performance and problems.
Table 5. Gas Supply Pressure Requirements
6.
If the gas supply pressure is less than required,
check for undersized pipe between the meter and
the heaters, a restrictive fitting, or an undersized
gas meter.
7.
Before operating the heater, test the complete gas
supply system and all connections for leaks using
a soap solution.
Do not use an open flame to test
for leaks.
CAUTION
Some leak test solutions (including soap and water)
may cause corrosion or stress cracking. Rinse the
piping with water after testing.
8.
Test gas offset pressure. See Section 10.
Professional Service and Maintenance.
WARNING
Failure to replace the 1/8 inch NPT gas valve plugs on
inlet, gas offset pressure ports, and cap on the mani-
fold pressure adjustment screw, can result in property
damage, severe injury, or death.
4.2 Special Precautions for LP Gas
Under the same environmental conditions, liquid
propane (LP) gas is more dense than air and will more
readily collect in enclosed areas if there is not adequate
ventilation. It is not recommended to install LP gas
heaters in enclosed areas such as pits. Locate heaters a
safe distance f
rom LP gas cylinders and filling equipment.
Consult the National Fuel Gas Code (NFPA
®
54/ANSI
®
Z223.1, latest edition), the Liquefied Petroleum Gas Code
(NFPA 58, latest edition), the Natural Gas and Propane
Installation Code in Canada (CAN/CSA B149.1, latest
edition), and any other local codes and fire protection
authorities about specific installation restrictions in your
area.
For ALL installations the combustion air openings
requirements and NFPA54 / ANSI Z223.1 MUST be
followed for safe and proper operation.
Section 5. Water Connections
5.1 Water Piping Connections
Install pool system components with connections as
illustrated in Figure 12.
Pool
3-way
valve
3-way
valve
Spa
3-way
valve
check
valve
Heater
Filter
Pump
Chlorinator
main
drain
Figure 12. Typical Water Piping Configuration
