Page 44
Jandy
®
JXi
™
Gas-Fired Pool and Spa Heater | Installation & Operation Manual
• Where possible, shelter the pool from prevailing
winds with well-trimmed hedges or other
landscaping, cabanas, or fencing.
• The greatest source of heat loss in a swimming
pool is through evaporation. It can account for
50% of pool systems total heat loss. The use
of solar blankets, automatic covers or anything
that limits the air’s access to the surface of the
water will help reduce this heat loss and minimize
evaporation.
9.3 Winterizing
In areas where freezing temperatures occur in winter
and the pool or spa will not be used, the pool should
be winterized by a qualifi ed pool service technician:
• Turn off the electrical supply and the main gas
supply to the heater.
• Remove the heater access panel.
• Turn off gas supply to the heater following the
shut-down instructions. See Section 8.6 and
Figure 21.
• Remove the drain plug from the inlet/outlet header
and completely drain the heater before the fi rst
frost. See Section 5.5.1 step “a”
• Inspect the gasket on the drain plug. Store the
drain plug in a safe place for winter.
• Cover the exhaust vent grill with plastic so that
snow will not accumulate and freeze on top of the
combustion chamber.
• Remove and drain the copper tubing (siphon loop)
for the water pressure switch.
COPPER
TUBING
Figure 23. Water Pressure Switch Copper Tubing
(Siphon Tube)
9.4 Spring Startup
When winterized, the heater should be reassembled
by a qualifi ed professional technician in the Spring.
• Reinstall the drain plug.
• Uncover the vent grill.
• Reattach copper tubing to water pressure switch.
• Make sure power is supplied to the pump.
• Turn on the fi lter pump and circulate water
through the heater for 5 minutes. Check for leaks
while circulating.
• Turn on the main gas supply to the heater at the
gas valve outside the heater jacket.
• Turn on the heater according to Section 8.6 and
Figure 21.
9.5 Inspection and Service
WARNING
Improper installation or maintenance can cause nausea or asphyxiation
from carbon monoxide in fl ue gases which could result in severe injury,
or death.
WARNING
For your safety, when starting the heater, keep your head and face
away from any exhaust or inlet grill openings to prevent any risk of
personal injury. Make sure all doors/panels are securely in place and
stand back from the heater.
The heater is designed and constructed to provide
long performance life when installed and operated
properly under normal conditions. Periodic
inspections, especially at spring start-up, are
important to keep your heater running safely and
effi ciently through the years. Zodiac Pool Systems
LLC recommends that the homeowner inspect
the heater on a regular basis (especially after
abnormal weather conditions), and arrange to have
a professional inspection at least once a year by a
qualifi ed service technician.
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