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Watts Solar Controller LCD PLUS Manual

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2.3.3 System 3
System with 2 tanks, 2 pumps, 1 collectors array and 3
sensors.
With this system you can add an extra function with 1
sensor (Thermostat, Cooling, Antistagnation).
The loading of the tanks is activated if the temperature
difference “dt” between the collector (T1) and the tanks (T2,
T4) is sufficient.
You can choose different possibilities for the priority of the tank
loading. See parts “Priority Tank” for more information.
2.3.4 System 4
System with 1 tank, 1 pump, 1 valve, 2 collector arrays with
2 different cardinal direction (East / West) and 3 sensors.
With this system you can add an extra function with 1
sensor (Thermostat, Cooling, Antistagnation).
The loading of the tank1 is activated if the temperature
difference “dt” between collector (T1, T4) and the tank1 (T2) is
sufficient. The valve direction of P2 is achieved by the warmer
of the two collector arrays.
2.3.5 System 5
System with 1 tank, 2 pumps, 2 collector arrays with 2
differents aspects (East / West) and 3 sensors. With this
system you can add an extra function with 1 sensor
(Thermostat, Cooling, Antistagnation).
The loading of the tank1 (T2) is activated if the temperature
difference “dt” between the collectors and the tank1 is
sufficient.
The tank will be loaded by the warmer collector (T1 or T4).
P1 // P2
Use this function to authorize the run of the two pumps P1 and
P2 in the same time. (The tank will be loaded by both
collectors)
- To activate the function, press (+) or (-) to select the “P1 //
P2“ line and press (►) to active “yes” this function with (+) or (-
).
2.3.6 System 6
System with 1 collector array, 1 solar tank, 1 pump, 1 valve
and 4 sensors.
With this system you can add an extra function with 1
sensor (Thermostat, Cooling, Antistagnation or Booster).
The loading of the tank1 is activated if the temperature
difference “dt” between collector (T1) and the tank1 (T2) is
sufficient.
Heating circuit return pre-heating:
If the "dt" between tank1 (T3) and heating return (T4) is
sufficient, the space heating return will be preheated through
tank1. This saves energy at the external heating source *.
2.3.7 System 7
System with 1 collector array, 1 solar tank, 2 pumps, 1
external heat exchanger.
With this system you can add an extra function with 1
sensor (Thermostat, Cooling, Antistagnation and diffcontrol
function).
The loading of the tank1 is activated if the temperature
difference “dt” between collector (T1) and the tank1 (T2) is
sufficient.
Delay P2
You can choose a time delay for the start up of the pump
between the heat exchanger and the tank1. Default value is 1
minutes to give the heat exchanger time to heat up.
- With (+) or (-) select the line “delay P2” and press (►) to put
highlight the line.
- It is now possible to choose the delay for P2 start up with (+)
or (-). (Adjustable 0 to 30 minutes with factory value 1 minute)
2.3.8 System 8
System with 1 tank, 2 pumps, 1 collector array, 3 sensors
and 1 plate heat exchanger. With this system you can add
an extra function with 1 sensor (Thermostat, Cooling,
Antistagnation or booster).
P1 P2
System
3
T1
T1 _ _ _°C
T2 _ _ _°C
T4 _ _ _°C
P1 _ _ _ %
P2 _ _ _ %
T2 T4
P2
P1
T1 _ _ _°C
T2 _ _ _°C
T4 _ _ _°C
P1 _ _ _ %
System
4
T1 T4
T2
P1 P2
System
5
T1 T4
T2
T1 _ _ _°C
T2 _ _ _°C
T4 _ _ _°C
P1 _ _ _ %
P2 _ _ _ %
 System --- -
System 5
P1||P2 No
P2
*
P1
System
6
T1
T1 _ _ _°C
T2 _ _ _°C
T3 _ _ _°C
T4 _ _ _°C
P1 _ _ _ %
T2
T4
T3
P1
P2
System
7
T1
T1 _ _ _°C
T2 _ _ _°C
P1 _ _ _ %
P2 _ _ _ %
T2
 System --- -
System 7
Delay P2 2min
… 7 …


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