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Watts Solar Controller LCD PLUS Manual

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Date,
- Press (►) once to adjust the Month.
- Press (►) twice to adjustment the Day.
- Press (►) three times to adjustment the the Year.
- Depress (◄) three times to return to the line
selection.
* The day will be automatically displayed.
24H/12H clock,
- Press (►) once to enable the desired choice for
the time format.
D.S.T.
- Daylight Summer Time, activate this function to
enable the automatic hour change between summer
and winter.
Note: If the power supply to the controller is lost the correct
time will be stored in memory for 24H. Longer periods will
require manual readjustment of the clock.
2.3 System
When the line is highlighted, press (►) to enter the
submenu.Choose between the 8 system options, by pressing
(►) key and choose your system with (+) or (-). There is also
the possibility to add different extra functions by using the P3
output (see “output configuration” Chapter 2.4)
2.3.1 System 1
Basic system, with 1 tank, 1 pump, 1 collectors array and 2
sensors.
With this system you can add extra functions with 1 or 2
sensors (Thermostat, Cooling, Antistagnation, Booster or
Diffcontrol function).
The loading of the tank1 is activated if the temperature
difference “dt” between the collector (T1) and the tank1 (T2) is
sufficient.
2.3.2 System 2
System with 2 tanks, 1 pump, 1 valve, 1 collectors array and
3 sensors. With this system you can add an extra function
with 1 sensor (Thermostat, Cooling, Antistagnation or
Booster).
The loading of the tanks is activated if the temperature
difference “dt” between the collector (T1) and the tanks (T2,
T4) is sufficient.
You will have different adjustments to define the priority of the
tank and also the loading function for the secondary tank.
These following parameters are available for tsytems with
2 tanks.
Priority Tank
“No Prio”
No priority is done on the tanks. The two tanks are loaded
independently; the only condition is that the “dt” value is
sufficient to initiate tank loading.
“1”
The primary tank will be the tank1 managed by the sensor T2.
It will be named with a small number “1” in the tank on the
main screen.
“2”
The primary tank will be the tank2 managed by the sensor T4.
It will be named with a small number “1” in the tank on the
main screen.
If a primary tank is chosen, the loading of this tank will be
made in priority, the secondary tank will be only loaded if:
- The primary tank will reach the “Maxtemp tank(x)” value
adjusted on “setting” menu.
- If the collector temperature is too small to initiate tank
loading of the primary tank. In this case the secondary tank will
be loaded with the cycle function defined by the two following
parameters. This function allows switch back from second tank
to the priority tank.
(1 cycle = “Prio Time break” + “Prio Time charge”)
Note:
All the time if the “dtMax tank(x)” value of the primary tank
becomes sufficient the loading will switch to the primary tank.
Prio Time charge
Load time duration (ON time) for the cycle function.
- To change the duration press (►) to highlight the line and
select your choice with (+) or (-). (Adjustable to 1 to 30min with
default value 15min)
Prio Time break
Break time duration (OFF time) for the cycle function.
- To change the duration press (►) to highlight the line and
select your choice with (+) or (-).(Adjustable to 1 to 30min with
default value 2min)
 System --- -
System 1
P1
System
1
T1
T2
T1 _ _ _°C
T2 _ _ _°C
P1 _ _ _ %
P1
P2
System
2
T1
T1 _ _ _°C
T2 _ _ _°C
T4 _ _ _°C
P1 _ _ _ %
T2 T4
 System --- -
System 2
Prio tank 1
Prio time charge 15m
Prio time break 2m
… 6 …


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