
Data Sheet
Thermostatic sensor RAS-C
Application
RAS-C 013G5015 RAS-C 013G5016
The RAS-C radiator sensors are for use on Danfoss radiator valves in all central and district 
heating systems.
RAS-C sensors are self-actuating proportional 
controllers with a small P-band, designed for 
use in 2-pipe domestic heating systems.
RAS-C sensors are equipped with a snaplock 
connection, which ensures quick, rm and 
long lasting mounting onto the valve body, 
without the use of any tools.
All RAS-C sensors incorporates a Frost Protection Setting.
RAS-C 013G5023
The RAS-C sensors also provide the option to 
limit the temperature range. On 013G5016 
both maximum and minimum setting temperature can be limited. On 013G5015 only 
the maximum temperature can be limited.
The RAS-C construction is particularly robust, 
with both end-stop strength limits and sensor bending force limits being substantially 
above the requirements of the European 
Standard EN 215.
Danfoss Heating Solutions  VDFNQ302 © Danfoss 05/2015  1

Datasheet  Thermostatic sensor RAS-C
Manufacturer: 
Model: 
Registration number:
Danfoss 
RAS-C 5023 
10558-20141029
Information: www.tell-online.eu
A Label of EUnited Valves
Thermostatic Eciency 
Label 
Ordering and 
specications
Type Sensor Colour Features Setting range 
1)
RAS-C 5015 Built-in White Temp. limitation min./max 15 - 28 ˚C 013G5015
2)
RAS-C 5016
RAS-C 5023
 2  VDFNQ302 © Danfoss 05/2015  Danfoss Heating Solutions
Built-in White Temp. limitaionmin./max 8 - 28 ˚C 013G5016
2)
Built-in Black/White Temp. limitation 8- 28 °C 013G5023
Code no.

Datasheet  Thermostatic sensor RAS-C
Mounting 
Setting the temperature
Type Sensor Colour Features Setting range 
1)
 Temperatures stated for Xp = 2K, i.e. the valve is closed at 2 °C higher room temperature.
2)
      KEYMARK certied according to EN215
The Danfoss snaplock connection is easy to 
mount and requires no use of tools, once the 
valve cover has been removed. The sensor is tted 
to the valve by applying a gentle pressure. 
When the sensor is in place, the snaplock connection is activated and the sensor has been correctly 
mounted. If dismounting and mounting are carried out again, the mechanism must be tightened 
manually by turning the tightening ring.
   = Frost protection setting
1)
Code no.
Dimensions
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.
           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.
Danfoss Heating Solutions  VDFNQ302 © Danfoss 05/2015  3

Datasheet  Thermostatic sensor RAS-C
Design and function
 1. Socket
 2. Bellows
 3. Setting handle
 4. Setting mark
 5. Limiter tab
 6. Reset spring
 7. Sensormedium
 8. Spindle
 9. Spring
Danfoss A/S 
Heating Solutions 
Haarupvaenget 11 
8600 Silkeborg 
Denmark 
Phone: +45 7488 8000 
Fax: +45 7488 8100 
e-mail: heating.solutions@danfoss.com 
www.heating.danfoss.com
 4  VDFNQ302 © Danfoss 05/2015  Danfoss Heating Solutions