Water Filtering; Method Of Water Heating; Temperature Scale And Maintaining; The Programmed Temperature - Jacuzzi Experience ALIMIA Installation Manual

I

WATER FILTERING

Water filtering is essential to keep it clean and clear, and to elim-
inate suspended particles. This cleaning is assured by the filter-
ing pump and by the sand filter. Refer to the corresponding chap-
ter for further information on the sand filter.
If the spa is subject to heavy use, it is advisable to set a contin-
uous filtering cycle, or at least of sufficient duration to remove all
contaminants which may enter the water during use.
With the control panel of the electronic box, you can set fil-
tering to be continuous, during certain periods of the day, or de-
activated. Filtering during specific periods of the day can be
scheduled for one, two or three time periods over a space of 24
hours. To carry out these settings, refer to the next chapter on-
setting of heating and filtering cycles (timer parameters).
To activate filtering according to the parameters memorized
in the timer, the timer must be on (1), i.e with the "clock" key LED
on (see chapter on setting general system parameters).
To read the exact temperature of the water in the tub (the
probe is in the pipe that runs to the filter), the filtering pump
starts up every half hour for five minutes, even if no filtering cy-
cles have been set. This ensures a total of at least 4 hours of
water filtering during the day, even if filtering is deactivated,
provided the system is not off.
When the filtering pump is running due to automatic pro-
gramming, or preset by the timer, it cannot be turned off by the
pneumatic push button located on the spa.
When users enter the spa and turn on a hydromassage pump
and/or the blower, the filtering pump starts up automatically. It
then remains on for another 15 minutes after the hydromas-
sage pumps and/or blower shut off. This eliminates any con-
taminants which enter the water during use.
I

METHOD OF WATER HEATING

The spa water is heated by a tubular electric heater or a heat
exchanger. The heat exchanger must be connected to a system
that produces hot water. These devices ensure that the water is
heated in just a few hours, even after changing water in the sys-
tem. The electric heater (12 kw) is able to increase the tempera-
ture of 1 m3 of water by about 10 °C in an hour, not taking into
consideration system heat loss. For installation in warm climates,
where the water in the spa can be heated using solar energy, the
system can be requested with no water heating system.
Therefore, other methods will be used to maintain perfect water
temperature.
Do not set water heating temperatures of over 40°C. The rec-
ommended temperature is 35-36°C. The electric heater is
equipped with a manual reset safety thermostat, factory
set to 45°C.
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By means of the control panel of the electronic box, you can
set continuous heating (which is however deactivated when the
programmed temperature is reached), heating at scheduled
times of the day, or deactivated.
Heating at during specific periods of the day can be scheduled
for one, two or three time periods over a space of 24 hours. To
carry out these settings, refer to the next chapter on setting of
heating and filtering cycles (timer parameters).
When heating is set to continuous, or at scheduled times, if the
water temperature as measured by the probe located on the spa-
pak is less than the programmed temperature, the filtering pump
is started and the heater (or heat exchanger) is activated, and re-
mains on until the programmed temperature is reached.
However, if heating at scheduled times is set, the heater s-
tays off outside those times, even if the water temperature is be-
low the programmed temperature.
Water heating can be activated by means of the "heating"
key (4) on the control panel mounted on the electronic box with
the system in "active" status ("start" key on).
Water heating can also be activated by means of the pneumat-
ic push buttons installed on the tub, provided they are enabled.
See the subsequent chapter on pneumatic push buttons.
By means of the control panel, you can set/modify the water
heating temperature, either with the system in the "standing by
for commands " status (see the chapter on general system pa-
rameters), or in "active" status (see section on adjustment of
water heating temperature).
In any case, the display must show the message SP—, which can
be modified using the keys"+" and "-".

Temperature scale and maintaining

the programmed temperature

The temperature scale default setting is °C, but it can be changed
to °F via the general system parameters with the control panel in
"standing by for commands" status.
Press and hold the "light bulb" key for about 1-2 seconds. Then
use the keys "set", "+" and "-" to modify the data for parameter
P7- (see the chapter on setting general system parameters).
When the programmed water temperature is reached, the
heater (or heat exchanger) is deactivated and is not reactivat-
ed until the actual water temperature drops to a certain value be-
low the programmed set point. This value, which has a default
value of 1°C, can be modified by 0.5°C up to a maximum of
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set