User Manual

ManualsBrandsSiemens ManualsThermostats (temperature controller with sensor)Thermostatic Radiator Valve Heads RT56.05, RT56.15

CE1N2143E

08.10.2003

Siemens Building Technologies

HVAC Products

143

Thermostatic

Radiator Valve Heads

RT56.05

RT56.15

with integrated fluid-filled sensor

Use

Hot water central heating plants with thermostatic individual room temperature control.

The thermostatic head is designed for use with radiator valves.

It is fitted to radiator valve types VD…, VE…, VU…, VPC…, VPD…, VPE… and auto-

matically regulates the hot water flow in function of the temperature requirements of the

individual rooms.

• In two-pipe heating systems (with weather-dependent flow temperature control)

• For individual room temperature control and limitation in individual rooms

• Maintains the required room temperature at a constant level

• Acquires and compensates heat gains from solar radiation, people, lighting, etc., as

well as heat losses in the space

• Proportional control

• For public buildings; protected against tampering, damage and removal by using

protective cover AL148

Mode of operation

The fluid-filled sensor responds to deviations from the room temperature setpoint.

When the room temperature rises, the fluid inside the metal capsule expands, exerting

pressure on the bellows and the stem, which causes the valve to continuously close so

that the radiator's heat output will be reduced. When the room temperature falls, the

bellows expands, thereby opening the valve so that the radiator's output will be increa-

sed again.

Summary of content (4 pages)

PAGE 1
2 18 Thermostatic Radiator Valve Heads 143 RT56.05 RT56.15 with integrated fluid-filled sensor Use Hot water central heating plants with thermostatic individual room temperature control. The thermostatic head is designed for use with radiator valves. It is fitted to radiator valve types VD…, VE…, VU…, VPC…, VPD…, VPE… and automatically regulates the hot water flow in function of the temperature requirements of the individual rooms.
PAGE 2
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.
PAGE 3
Fitting notes • To ensure optimum room temperature control, it should be made certain that thermostatic heads with built-in sensor are always mounted horizontally so that the room air can freely circulate around the sensor. This means that the head must not be covered by panels, furniture and the like. • Also, the head must not be exposed to direct solar radiation and draughts of cold air. • In locations where these requirements cannot be met, the version with a remote sensor, type RT76.
PAGE 4
Technical data General Material Thermostatic head to CEN standards Max. differential pressure (closing pressure) Max. differential pressure (closing pressure) Max. operating temperature Setpoint setting range Min. sensor temperature (storage) Max. sensor temperature Hysteresis Nominal valve stroke Proportional band Time constant Influence of medium temperature Influence of differential pressure Liquid sensor Spring elements Head stem Setting knob EN 215 (part 1) 1.5 bar (⅜“ - ½“) 1.