Controls; Temperature Control; Setting The Thermostat; Note On Determining Water Temperature - Jacuzzi Alexa Owner's Manual

Function Selector Switch
To ensure your safety and allow easy operation, your
spa is equipped with an air-activated function selector
switch located on the control panel at the rim, near the front
corner of the spa. This push-button switch selects the
following four functions in the continuous sequence indi-
cated:
1. OFF
2. JETS
3. HEATER/FILTER
4. FILTER ONLY
(The next selection is OFF again.)
You know which function your are selecting when the
whirlpool system is activated; use that function as a
reference to indicate your location in the function se-
quence, since that function is the most obvious when
operating.
For best performance, pause a second or two between
push-button selections.

Setting the Thermostat

Turn on the heater by selecting the HEATER/FILTER
mode on the selector switch.
You can verify that the spa's heater is operating by
opening the skirt door, and checking that the red indicator
light is illuminated on the back of the heater housing.
The heater adjustment knob is located on the control
panel. To set the thermostat, rotate the knob to the desired
temperature. If the water temperature reaches a level
higher than desired, turn the heater knob back to a lower
setting. The spa's water temperature will stabilize after
CONTROL PANEL
AIR INDUCTION
Controls nearest jets
OPERATION
SYSTEM SWITCH
(Controls JETS, HTR/FLTR
and FILTER only functions.)
a while and fall a few degrees before the heater turns on
again. When the water temperature reaches the tempera-
ture set by the thermostat, the heater and motor/pump will
turn off.
The water temperature will rise at a rate of about 2 F per
hour, depending on the temperature of the air surrounding
the spa. This rate will necessitate a waiting period before
using the spa, the length of which will be determined by the
temperature of the water before turning on the heater. For
example, if the water in the spa is kept at about 70 F when
the spa is not in use, and the water temperature at which
you plan to use the spa is 100 , then it will take about 15
hours to heat up sufficiently.
Once you have determined the desired setting on the
thermostat knob, it is not necessary to change or readjust
it again during normal operation unless you decide on a
different setting.
The optional spa cover available for your spa will help
control heat loss from the water surface and thereby reduce
energy consumption. You can improve the spa's heat
retention by keeping the spa cover in place on the spa while
heating the water.
Notes on Determining Water Temperature:
As spa products generally perform in a narrow range of
operating temperatures, we recommend that you use a
medical (clinical) type thermometer for an accurate mea-
surement of spa water temperature. Other types of ther-
mometers generally available, such as those used for swim-
ming pools, are not sufficiently accurate to determine spa
water temperatures. Take water temperature readings when
the heater has just turned off, for the greatest accuracy.
TEMPERATURE CONTROL KNOB
(for adjusting thermostat)
7