Danfoss RA/RTD 2945, RA/RTD 2946 Data sheet
Data Sheet
Replacement Sensor for Danfoss RTD Valve Bodies
Application
Ordering and Specifications
Fitting the Sensor
RA/RTD 2945 and 2946 are replacement sensors
for existing systems fitted with RTD valve bodies.
Replacement sensors incorporate RA 2000
technology and design, and provide a simple and
straightforward way to upgrade older radiator
thermostats without the need to drain down the
system.
Thermostatic sensors
Type Valve/dim. Model
RA/RTD RTD 10-25 Built-in sensor 5-26 °C 013G2945
RA/RTD RTD 10-25 Built-in sensor 16-26 °C 013G2946
1)
Temperatures stated for Xp = 2K, i.e. the valve is closed at 2 °C higher room temperature.
Accessories
Product Code no.
Gland seal assembly for RTD valves 10 pieces 013G0290
As part of any upgrade Danfoss recommend that
the valve gland seal is also replaced. These can be
replaced without draining down the system.
Temp. range
Built-in sensors should always be fitted
horizontally so that the ambient air can pass
freely over the sensor.
1)
Code no.
No other tools but an open end spanner is
needed to fit the replacement sensor.
Setting the Temperature
Danfoss Heating Solutions VDFNE202 © Danfoss 02/2011 1
The required room temperature is set by turning
the setting dial. The temperature scales show the
correlation between scale values and the room
temperature. The temperature values stated are
for guidance only as the obtained room
temperature will often be influenced by
installation conditions.
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.
T
7 9,5 14 17 20 23 26 28°C
5 7,5 13 15 18 21 24 26°C
l
l
T
1
2 3
4 5
... .
T
17 20 23 26 28°C
15 18 21 24 26°C
2 3 4
5
. . ..
l
Data Sheet Replacement Sensor for Danfoss RTD Valve Bodies
Locking and limitation of the temperature setpoint of RA sensors are carried out using the
limiter pins placed at the back of the sensor.
RA 2945
RA 2946
= Frost protection setting
= Frost protection setting
Construction
Dimensions
1. Actuator
2. Bellows
3. Setting dial
4. Setting spring
5. Spindle
Danfoss A/S
Heating Solutions
Haarupvaenget 11
8600 Silkeborg
Denmark
Phone:+45 7488 8000
Fax: +45 7488 8100
Email: heating.solutions@danfoss.com
www.heating.danfoss.com
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products
already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective
companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
2 VDFNE202 © Danfoss 02/2011 Danfoss Heating Solutions
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