Viessmann VITOTRONIC 100 GC1B Service Manual download pdf (Page 51)

Installation

51

Connection of the DHW Tank Temperature Sensor

The sensor measures the domestic hot

water tank temperature.

Heating systems with domestic hot

water heating (single-boiler systems

only)

1. Install the DHW tank temperature

sensor.

See installation instructions

for domestic hot water tank

Please note:

When installing the sensor in DHW

tanks of other makes, make sure

that the sensor is pressed against

the sensor well of the DHW tank by

means of a suitable device.

2. Ensure that the maximum

permissible domestic hot water

temperature is not exceeded. If

necessary, install a suitable safety

device for this purpose.

Heating systems without domestic hot

water heating

Do not connect the DHW tank

temperature sensor.

Electrical connection

See page 35.

The sensor measures the boiler

water temperature of the boiler.

The boiler temperature sensor is

installed at the same time as the

boiler insulation.

Check the sensor

1. Disconnect plug % in the

terminal compartment.

2. Measure resistance of sensor at

terminals ”1” and ”2” of the plug

or ”2” and ”3” (if a second DHW

tank temperature sensor is

connected).

DHW tank

temperature

in °C / °F

Resistance

in Ω

ΩΩ

Ω

40 / 104

50 / 122

60 / 140

578

597

616

3. Compare the value measured with

the current temperature. If the

value differs significantly, check

installation and, if necessary,

replace sensor.

Technical data

Degree of protection: IP 32

Ambient temperature

during operation:

0 to + 130°C

32 to + 266°F

during storage and transport:

-20 to + 170°C

- 4 to + 158°F

Electrical connection

The sensors are ready to plug in.

Insert the DHW temperature sensor

in socket ”5” of the boiler control.

5351 338 v1.6

5

Resistance in

400

0

540

560

580

600

620

640

660

680

700

720

740

760

20 40 60 80 100 120 140

DHW temperature in °C / °F

32 68 141 176 212 248 284104

1 2 ... 46 47 48 49 50 51 52 53 54 55 56 ... 131 132

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