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ENGLISH
Zodiac
®
JXi
™
Gas-Fired Pool & Spa Heater
|
Installation & Operation Manual
Sweep Elbow
Union Nut
Union Nut
Union Tailpiece
Union Tailpiece
Cut Pipe
Cut Pipe
O-Ring
O-Ring
O-Ring
Drain Cap
Top Inlet Manifold Orifice
Side Inlet Manifold Orifice
Manifold Outlet
Figure 9.
Inlet Piping
• If using the sweep elbow. Use approved NSF
adhesive to glue the sweep elbow into the tailpiece
and onto the cut pipe.
•
Repeat the above steps for the manifold outlet. Again
paying special care to ensure proper seating of the
union tailpiece o-ring.
• Install the union nut and drain cap with o-ring at the
unused inlet on the heater manifold. Be sure that the
o-ring is properly seated. Secure hand tight only. Do
not overtighten. Do not use pipe joint or tape.
•
Return all valves to their operating positions.
•
Restore power to the heater at the breaker.
• Turn on pump and inspect carefully for leaks.
•
Restore main gas supply.
•
Start the system and check for proper flow.
•
Return heater to normal operation.
WARNING
To avoid an electrical shock hazard, which can result in serious
injury or death, ensure that all electrical power to the system is
turned off before approaching, inspecting or troubleshooting any
leaking valves or plumbing that may have caused other electrical
devices in the surrounding area to get wet.
Follow all fi lter manufacturer’s instructions. Never
attempt to assemble, dis as sem ble or adjust the
fi lter when there is pressurized air in the system.
Starting the pump while there is any pressurized
air in the system can cause the fi lter lid to be
blown off, which can cause death, serious
personal injury or property dam age.
5.3
Water Pressure Switch Adjustment.
The water pressure switch is located inside the heater
jacket on the water connection side
See
Section
1.8,
item “f”.
The switch is preset at the factory for activation at
14 kPa (2 psi). The pressure switch setting must be
adjusted If the heater is installed:
• Below the surface level of the pool
•
More than 600 mm (2′) above the pool level
• Where the pressure is measured at 6.9 kPa (1 psi) or
greater with the filter pump off
CAUTION
The water pressure switch should be adjusted to turn the heater off
when the pump is off. Setting the switch to close at too low fl ow can
damage the appliance. Adjust the switch to turn the heater off, not on.
NOTE:
It is recommended that a Pressure Release Valve (PRV) be
installed prior to taking any of the steps below.
Location of the heater above or below the pool water
surface can also affect the operation of the switch. The
factory installed switch can accommodate elevations of
1.8 m (6′) above the pool water surface or 3.4 m (11′
)
below pool water surface. If the heater water connections
are outside this range, consult your local Zodiac
representative for recommendations.
• Set the heater control to “OFF”.
•
Remove five screws securing the side panel to the
heater body.
•
Remove the side panel to gain access to the water
pressure switch. See
Figure 10.
•
Turn the filter pump on.
Pressure
Switch
Rotate clockwise with fingers
until heater turns off. Then rotate
couterclockwise 1/4 turn to set.
Leads
Adjustment
Sprocket
Figure 10. Water Pressure Switch Adjustment
•
Confirm that the pressure switch closes with a
voltmeter.
• If the switch does not close, check that all valves are
open to the heater and that there are no restrictions in
the line. You may also need to confirm flow rate from
your pump as outlined in
Section 5.1.
• Once an operational and correctly sized pressure
switch has been confirmed,
set the heater control to
either POOL or SPA.
•
With your fingers, turn the adjustment sprocket very
slowly clockwise until the heater shuts off.
• Slowly turn the pressure switch adjustment sprocket
counterclockwise one-quarter turn. The heater should
come back on. See
Figure 10.
