Bedienungsanleitung Watts Solar Controller LCD PLUS (Seite 11 von 36) (Deutsch, Englisch)

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2.5.2 Grundfos sensors

- Your controller had 2 specials inputs for analogics sensors

GRUNDFOS (Type VFS Flow sensor or RPS pressure

sensor).

The Flow sensor is used for energy measuring and

supervision, the pressure sensor is used only to supervise the

pressure on the primary circuit.

GDS1 (Grundfos Direct Sensor)

Once the line selected press (►) to enter in the submenu

GDS1.

You will have the choice between Flow or Pressure sensor with

different scales.

To choose the type of the sensor connected press (►) to

highlight the line and select your choice with (+) or (-).

- “NC” Not used

- “RPS 0 – 4 bar” Pressure sensor

- “RPS 0 – 6 bar” Pressure sensor

- “RPS 0 – 10 bar” Pressure sensor

- “VFS 1 – 12l/min” Flow sensor

- “VFS 2 – 40l/min” Flow sensor

- “VFS 5 – 100l/min” Flow sensor

- “VFS 10 – 200l/min” Flow sensor

- “VFS 20 – 400l/min” Flow sensor

Sensor type: see type plate on the mounted sensor

- Following your sensor choice you can view the

instantaneous values of the temperature, flow or pressure

measured by the sensor.

With Flow sensensor “VFS”,

With Flow sensensor “RPS”,

GDS2 (Grundfos Direct Sensor)

This input has the same function and possibilities of the GDS1

input,

2.5.3 Impulse Flow meter:

If impulse flow meter is installed (on T6 / PF) select “Yes”, then

you must enter with (+) or (-) the flow meter characteristics in

liter / Impulse.

(Adjustable 1 to 25 L/imp with factory value 10 L/imp)

When you use an impulse flow meter for energy measuring,

you must

Connect a temperature sensor (usually T5) mounted on the

collector return piping, to get the correct calculated energy

values.

Important Note:

You must not connect an impulse flow meter to T6, if a digital

pressure or flow sensor is connected to GDS2!

2.5.4 Temperature Sensor

This submenu allows viewing of the current state of all

temperature sensors connected on the controller; you can

immediately see the actual value measured by the sensor, if it

is in use or not & if the sensor is defective.

By pressing on the on the (►) key, you will acced the

calibration of the sensor.

Careful: Check the real value of the sensors with calibrated

thermometer before adjusting. (Calibration range -3 to +3°C

with factory value 0°C)

2.6 Energy measurment:

The controller has two energy measurement blocks. It is

possible to configure for both blocks the sensors which will be

used for energy calculation.

Energy metering calculation logic:

To calculate the energy the controller needs several elements,

two temperature measurement points “Warm” and “Cold”, the

flow value and the heat transfer fluid properties.

 GDS1---- --- -

 GDS1 NC

 GDS1---- --- -

 GDS1 VFS 1-12 l/min

Flow x.x l/min

Temp GDS1 xxx°C

 GDS1---- --- -

 GDS1 RPS 0 - 4 bar

Pressure x.x bar

Temp GDS1 xxx°C

 T6 --- -

 Impulse flow meter no

 T6 --- -

 Impulse flow meter Yes

Liter/impulse 10

 Inputs Configuration---- -

Temperature sensors

 T1 xxx°C

T2 xxx°C

T3 xxx°C

T4 not used

T5 not used

 T1 --- -

Pt1000

 Calibration 0°C

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