Jacuzzi PROFESSIONAL Serie Manuel D'installation page 37

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 pa-
rameter P7- (see the chapter on setting general system parame-
ters).
When the programmed water temperature is reached, the
heater (or heat exchanger) is deactivated and is not reactivated
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 3°C.
To do this, proceed in the same manner as described above,
modifying the values associated with parameter P3- (chapter on
setting general system parameters).
To ensure precise measurement of the water in the tub, the
filtering pump is started up once every half hour (see the chapter
on water filtering), since the temperature probe is inserted in the
pipe that goes to the filter.
Adjustment of water heating temperature (set point)
To check or modify the water heating temperature, do the follow-
ing:
Press the "start" key (3). The corresponding LED will come
on.
The display will show the current temperature of the water in
the tub. However, if the system is turned on at that moment, the
filtering pump is automatically started up, and the actual tem-
perature of the water will be shown after about two minutes
(shown in °C, or °F as programmed, see the chapter on setting gen-
eral parameters).
Press the "hand" key to show the parameter:
- SP—: is the temperature you want the water in the hot-tub to
reach(in °C or °F), i.e. the set point.
When this message appears, the keys "+" and "-" also light up.
You can use them to modify the memorized temperature set
point from a minimum of 15 °C to a maximum of 40 °C (59÷104
°F).
To show the temperature of the water in the tub again, just do
not touch any key for about 30 seconds, or repeatedly press the
"set" key.
Note: if the temperature is set to °F, values above 99°F will still be
shown in two figures, and the small dot at lower right will light up.
Maintaining a minimum temperature of the water
If water heating is deactivated or if the outdoor temperature is very
low, associated with water heating programmes that are too brief,
the temperature of the water may drop to levels that are too low
and/or undesirable.
At least once every half hour, the system reads the actual tem-
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perature of the water in the tub (see the chapter on water filtering),
even if no water filtering or heating cycles have been programmed.
If the water temperature drops below the minimum set tempera-
ture, the heater and the filtering pump are activated automatically
until the temperature returns above that value.
The memorized default minimum temperature is 15°C, but
this can be modified by entering the procedure for modifying
general system parameters (parameter PA-, see corresponding
chapter).
The aforementioned programme for maintaining the mini-
mum temperature is equipped with additional safeties, for ex-
ample if there is a failure of the heater.
If the water temperature drops below 10°C, the pumps and
the blower come on for 30 seconds every hour. If the tempera-
ture drops below 5°C, the pumps and blower continue running
until the temperature is once again greater than 7°C (antifreeze
protection).
S
ETTING OF FILTERING AND HEATING CYCLES
( )
TIMER PARAMETERS
00.00
To enter the procedure for programming timer parameters,
press and hold the "clock" key (7) for about 1-2 seconds. The
corresponding LED will come on as will those of the keys "+" (8),
"-" (5) and "set" (9), while the display will show the first param-
eter (A0—).
N.B.: the system must be in "standing by for commands" condition,
i.e. with the "start" key (3) off.
The system parameters that can be set are "On" (always on),
"di" (deactivated), and cycle start time, to be associated with a
cycle end time (up to a maximum of three).
Press the "set" key repeatedly to view the following parame-
ters, which can be modified using the keys "+" and "-":
- A0—: filtering mode, which can be "On" (always on), "di"
(deactivated), "—" (start time of first filtering cycle; no frac-
tions of hours).
The default setting is "On".
- A1—: end time of first filtering cycle "—", which must nec-
essarily be greater than the start time.
It cannot be modified if A0 = "On" or "di".
- A2—: start time of second filtering cycle "—".
The same notes are valid as for point A1.
- A3—: end time of second filtering cycle "—".
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