Owner`s manual

MODEL 320M AND 320 XM
MECHANICAL SYSTEMS
These are non digital systems which use a
mechanical equipment pak.
If you have the 110 volt version the heater will not
work when you have the pump on high speed due to
the amperage capacity of the 110 volt circuit in your
house.With the 240 volt version, the heater will
operate when the pump is turned to high speed.
Start up / Temperature Setting
Remove the equipment door from the hot tub and
open the two knife valves. See Figure 4. Locate the
air bleed knob and open to bleed any air out of the
system then turn the on/off switch to on. Make sure
all jets are in the open position. Once all air is bled
out of the system, and good flow is felt from the jets
you can turn on the heater.The temperature adjust-
ment is done down at the equipment.
Turn the thermostat knob up to maximum setting;
put a Beachcomber or a good quality, accurate
floating thermometer in the water. Once the temper-
ature on the thermometer is up to your desired
temperature, turn the dial backwards slowly, just
until the heater on indicator light goes out.This will
then keep the water at your desired temperature.
Note: There is a 2ºF variance above or below your
desired temperature with mechanical thermostats.
Continuous / Economy Switch
If the economy setting is used the pump will only
run when the thermostat senses a demand for heat.
During warm summer months when the demand for
heat is low,you may not get enough circulation time
to maintain water clarity.
If you select continuous mode, the pump will run 24
hours a day and the heater will turn on and off from
the sensing of the thermostat. In extremely warm
weather you may need to remove the equipment
door to provide extra ventilation to the pump. Failure
to do so may cause the pump to overheat and shut
off or heat the water to an unsafe temperature.
High–Limit Reset
This is a safety device that will shut the system
down if a water temperature above 110ºF is sensed
at the heater housing.A return knife valve on the
left side of the pak left closed would cause the
water to overheat and kick out the high-limit switch.
Manually reset this button after approximately
1 hour. It is a red button that sticks out of the front
of the white pak box.
Activation Buttons
There are two push buttons located up on the top
of the hot tub. One button is to turn your pump from
low speed circulation to high speed jet operation.
The other is to turn the light on or off. Don’t forget to
turn the light off after each hot tub use. Failure to do
so can reduce the life expectancy of the light bulb.
Air Control Valves
There is one air control lever between the activation
buttons.Turn the lever to the two o’clock position to
allow warm air to be drawn into the jets from the
equipment area. See Figure 6.
Activating the pump to high speed will draw more
air.Turn the lever back to the 6 o’clock position to
stop the air from being drawn in.This is the
recommended position when not using the hot tub.
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Figure 6