W.Tech RAA Series Manual de usuario descargar pdf (Pagina 17)

Thermostats & Hygrostats

features

A-53

www.sbt.siemens.com/hvp/components

Description

Applications

Room Temperature Controllers

for CAV and VAV Systems

RCU50…

RCU50.2U Room Temperature Sensor with

manual heating/cooling changeover switch.

RCU50U Room Temperature Controller.

The RCU50… Room Temperature Controllers are de-

signed speciﬁcally for Constant Air Volume and Variable

Air Volume Systems.

Controlling individual room temperature in HVAC

installations that are heated or cooled, the RCU50…

are especially designed for use with VAV systems with

VAV compact controllers, valve actuators, and air

damper actuators.

• Modulating P-control

• 0 to 10 Vdc output for heating or cooling

• Operating voltage 24 Vac

• Ergonomic design

• Dual Fahrenheit/Celsius scale

Model RCU50U

• Automatic heating/cooling changeover

• Active 0 to 10 Vdc input for set point shifting

• Operating mode changeover input for

remote control

• Adjustable minimum limitation for cooling

output

Model RCU50.2U

• Manual heating/cooling changeover

• Operating Modes: normal operation

and OFF

• Output signal can be reversed

0-10 Vdc/10-0Vdc via a dip switch

Application Drawing

RCU50U Function Diagram.

RCU50.2U Function Diagram.

Key

T Room Temperature

Y10 Output Percentage

W Room temperature set point

XpH Proportional band heating

XpK Proportional band cooling

VR 0 to 100% minimum limitation

of cooling output

c/o Changeover

RCU50…

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 30 31

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W.Tech RAA Series Manual de usuario Pagina 17

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