Technical manual

SOLAR

A detailed description of the individual operation and function of the control units can be found in the respective installation and operating instructions.

4.2.2 Temperature sensors

All Dimplex solar control units come with three PT1000 temperature sensors which can be extended as required. The polarity of the sensor contacts is not important.

The length of the sensors delivered with each control unit is:

- collector sensor: 1.5m

- cylinder sensors (x2): 3.0m

When extending the collector sensor, the overvoltage protection box is to be used to protect the control unit from voltage surges caused by lightening (see Figure 27). The overvoltage protection box is part of the pump unit delivery.

The cable used for the extension of any of the sensors should meet the following mini- mum requirements:

-0.75mm² up to 50m long

-1.50mm² up to 100m long

Note: Sensor and mains cables must not be routed or ducted together. A minimum separation of 100mm or equivalent shielding must be observed.

From Collector

 

To controller

Figure 27 – Connection of collector temperature sensor to overvoltage protection box (included with

Dimplex solar pump unit SOLPU1/2)

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Dimplex ST0133 technical manual Temperature sensors

ST0133 specifications

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