Manual Watts Solar Controller LCD PLUS (page 15 of 36) (English, German)

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3.11.5 Timer

- The timer block is used to cretate a daily program to

initialise the operation time of the extra output (P3), this

function is generally use for energy saving in the case of an

additional heat source being used to warm the tank (e.g.:

additional heat is present only at the end of the day if the

sun loading was insufficient during the day.)

To use the Timer function select the line “Timer” and choose

“Yes”, then there is the possibility of adjusting the “start” and

“stop” times for three blocks.

3.12 Cooling Function

Available only if extra function “cooling” is selected on the

output P3

3.12.1 Cooling start

- setting level to start cooling the tank1 (by activating P3

output) to another heat storage for example when the water

temperature in the top of tank1 (T3) is above this setting

level. (Adjustable 20 to 90°C with factory value 75°C)

3.12.2 Cooling hysteresis

- Value of the hysteresis to stop cooling the tank1 when the

water temperature on the top of tank (T3) is under Cooling

start temperature minus hysteresis value. (Adjustable 1 to

30°C with factory value 10°C)

3.13 Diff control Function

Available only if extra function “diff control” is selected on the

output P3.

3.13.1 Max cold tank

- Maximum level on tank1 to stop the exchange function (T3

= TC).

(Adjustable 15 to 95°C with factory value 65°C)

3.13.2 Min warm tank

- Minimum level on external tank to start the exchange

function (T4 = TW). (Adjustable 0 to 95°C with factory value

15°C)

3.13.3 dTMax

- Value of the difference between cold and warm storage to

start the exchange function. (Adjustable 3 to 40°C with

factory value 15°C)

3.13.4 dTMin

- Value of the difference between cold and warm storage to

stop the exchange function. (Adjustable 2 to 30°C with

factory value 7°C)

3.14 Antistagnation Function

Available only if extra function “Antistagnation” is selected on

the output P3.

3.14.1 Start Level

- Setting level on collector (T1) to start the function, the

pump P1 will be turned on to discharge the warm

temperature of the collector through the relay P3.

(Adjustable 0 to 200°C with factory value 110°C)

3.14.2 Stop Level

- Setting level on collector (T1) to stop the antistagnation

function, the pumps P1 and P3 will be turned off. (Adjustable

0 to 150°C with factory value 90°C)

4 Operation Menu

4.1 Automatic and Off operation

- To put your system in Automatic operation, press (+) or (-) to

select the “Automatic“ line and press (►) to active this

working mode.

- To put your system in Off mode repeat the same sequence

as above.

Note: The controller status is displayed by a small graphic, on

the main screen stating “OFF”

 Settings -

Delay +900s

 Timer On

Time 1 Start 24H00

Time 1 Stop 24H00

Time 2 Start 24H00

Time 2 Stop 24H00

Time 3 Start 24H00

Time 3 Stop 24H00

Water temperature on top of tank1 T3

(°C)

Cooling stop

(start – hysteresis)

Cooling

start

Warm storage TW

Cold storage TC

MinWarm

tank

MaxCold

Tank

Extra

dTMin

dTMax

Collector

(T1°C)

Stop level

Start level

Tank (T2°C)

Standard

loading cycle

Antistagnation

cycle

 Operation--------------- -- -----

 Automatic (Active)

OFF

Chimney sweep

Manual testing

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Watts Solar Controller LCD PLUS Manual

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