23
ixi gas pool and spa heater
Installation Manual
22
ixi gas pool and spa heater
Installation Manual
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.
6.3
Water Pressure Switch Adjustment
The water pressure switch is located inside the heater
jacket on the water connection side
See Section
2.8,
item “f”.
The switch is preset at the factory. 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
If the heater is installed more than 1.2 metres (4’)
above or below the pool water level, a Pressure Switch
is no longer sufficient. A Flow Switch must be installed
as well.
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. If
the heater is installed more than 1.2 metres (4’) above
or below the pool water level, a Pressure Switch may
no longer be sufficient, and a Flow Switch may need to
be installed as well. 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,
a Flow Switch must be installed. Please contact a pool
professional or your local AstralPool representative for
additional 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 13.
• 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 13.
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 6.1.
• 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 13.
• Check the adjustment by turning the filter pump
OFF. The burner should shut off immediately.
• If it does not, restart the filter pump and repeat
the preceding step.
• Check the adjustment again. If you are still unable
to successfully set your water pressure switch
please contact your local AstralPool distributor or
call technical support at 1300 186 875. Additional
information can be found at www.AstralPool.com.
au.
• Return the pool temperature control to the
desired temperature.
• Return heater to normal operation.
