Danfoss RAS-CK Data sheet

Data Sheet

Thermostatic Sensor RAS-CK

Application

Ordering and
specications

RAS-CK is specially designed for non Danfos
valves and has a M30 x 1.5 connection.

RAS-CK is mounted onto the valve body with a
M32 spanner.

RAS-CK incorporates a frost protection setting.

The RAS-CK design is particularly robust, with
both end-stop strength limits and sensor
bending force limits being substantially above
the requirements of the European Standard EN

RAS-CK is a self-actuating proportional controller
with a small P-band, designed for use in 2-pipe
domestic heating systems, covering all central
and district heating systems.

Typ e Sensor Colour Features

RAS-CK 5025 Built-in

1)

Temperatures stated for Xp = 2K, i.e. the valve is closed at 2° C higher room temperature.

Black/White

With M30 x 1.5 connection,
temperature limitation

215.

Setting

range

8 - 28° C 013G5025

Code no.

1)

Accessories

Theft protection

Product Code no.

Anti-theft protection ring for RAS-CK, black 013G5326

Anti-theft protection ring for RAS-CK, white 013G5389

The anti-theft protection ring protects the
RAS-CK sensor from unintended dismounting.
The two half-rings are clamped together around
the union nut of the sensor.
Removing the anti-theft protection ring will
cause it to be destroyed.

VDIDF102 © Danfoss 10/2013

1

Data Sheet Thermostatic Sensor RAS-CK

15 Nm

10 14 18 22 26 30 °C

8 12 16 20 24 28 °C

Mounting

Setting the temperature

The RAS-CK sensor is mounted onto the valve
with a M32 spanner.

The required room temperature is set by turning
the setting dial. The temperature scales show the
correlation between scale values and room
temperature.
The temperature values stated are for guidance
only as the obtained room temperature will often
be inuenced by installation conditions.

5

4

3

 = Frost protection setting

0  1 2 3 4 5

The temperature scales are stated according to
European standards at Xp = 2° C. This means that
the radiator thermostats close at a sensor
temperature which is 2° C higher than stated on
the temperature scales.
RAS-CK has no 0-setting.

Dimensions

2

VDIDF102 © Danfoss 10/2013