LXi
™
Pool/Spa Heater Installation and Operation Manual Page 35
7.6.1 Lighting the Heater
Lighting instructions are as follows:
1. Turn off all electrical power to the heater at the
main junction box.
2. Remove the heater door and turn the heater gas
valve to OFF.
3. Wait 5 minutes before trying to start the heater.
4. Turn the gas valve control knob counterclock-
wise to ON. See Figure 30.
5. Replace the heater door.
6. Turn on electrical power to the heater.
7. Turn on the fi lter pump.
8. Set the heater control to the "SPA" mode. If the
temperature of the water exceeds the thermostat
setting it is necessary to increase the thermostat
setting to exceed the water temperature. Adjust
the thermostat setting (desired temperature) to be
greater than the water temperature. The igniter
lights the burner when the thermostat calls for
heat.
9. Set the time clock, if one is installed.
7.6.2 Shutdown
Complete shutdown instructions are as follows:
1. Set both temperature controls to their lowest set-
ting.
2. Turn off the control. Make sure the display shows
that the heater is off.
3. Turn off all electrical power to the heater at the
junction box.
4. Open the heater door and turn the gas valve knob
clockwise to off.
5. Shut off the external gas supply valve to the
heater.
7.7 Adjusting the Water Pressure
Switch
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 of a fl ow can damage the
appliance. Adjust the switch to turn the heater off,
not on.
ATTENTION
Le manocontact de pression d’eau doit être réglé
de façon à ce que l’appareil cesse de fonctionner
si la pompe s’arrête. Si le manocontact est réglé
pour se fermer lorsque le débit d’eau est trop faible,
l’appareil risque de s’endommager. Réglez le mano-
contact pour qu’il arrête l’appareil, et non pour qu’il
le mette en marche.
The pressure switch is preset at the factory for
activation at 2 psi (14 kPa). Do not adjust the pressure
switch if the heater is installed more than 15 feet (4.57
m) below the pool surface. Consult your local Jandy
representative for recommendations.
On some installations, the piping from the heater
to the pool is very short. The back pressure could be
too low to trigger the pressure switch. If this happens,
it may be necessary to install a directional fi tting or
elbows where the return line enters the pool. This will
increase back pressure enough for the heater to operate
properly.
Figure 30. Gas Valve
Figure 31. Adjustment of Pressure Switch
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