User Manual

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Siemens Building Technologies Thermostatic Radiator Valve Heads CE1N2143E
HVAC Products 08.10.2003
This design allows the radiator valve to be continuously operated, thus achieving
smooth regulation of the flow of heating water to the radiator, resulting in a constant
room temperature in agreement with the room temperature setpoint.
Type overview
Description Type reference Weight
Thermostatic head with frost protection and fully
closed position
RT56.05 126 g
Thermostatic head with frost protection position RT56.15 126 g
Protective cover, colour pure white RAL9016 AL148 30 g
Technical design
• Tested and certified to EN 215.
• High-quality fluid-filled sensor with great control accuracy
• Large specific travel and very small hysteresis
• Riders for minimum or maximum limitation or locking at a certain setpoint
• The capsule is filled with an expansion fluid and is used with a bellows and stem.
1
2
3
4
2143Z01
1) Fluid-filled capsule
2) Overtravel facility
3) Stem
4) Rider
Mechanical design
The setting knob, which accommodates the sensor, has openings which allow the sur-
rounding room air to enter, thus enabling the sensor to acquire the room temperature
quickly and accurately.
A slight mechanical stop indicates the recommended setpoint adjustment of 20 °C.
The head has a scale and symbols that correspond to the following room temperature
setpoints:
0
∗
1 2 3 4 5
Valve fully closed,
(only with
RT56.05)
Frost protection at
8 °C
12 °C 16 °C 20 °C 24 °C 28 °C
Protective cover AL148 to provide protection against tampering, especially suited for
public buildings. Protects the thermostatic head against inadvertent adjustments, dam-
age and removal and facilitates locking of the setpoint.
For technical data of thermostatic radiator valves, refer to data sheets 2145 and 2146.
Accessories
Sizing