W.Tech RAA Series Manual de usuario descargar pdf (Pagina 29)

Thermostats & Hygrostats

features

A-65

www.sbt.siemens.com/hvp/components

Description

Applications

The RDX... Room Temperature Controller with LCD is a

controller for heat pump systems with reversing valve,

optional electric heater, one- or two-stage heating and

one-stage cooling.

The RDX... Series of Room Temperature Controllers are

used for control of the following:

• Heat pump systems with reversing valve, optional

electric heater, one- or two-stage heating and one-stage

cooling.

• Room temperature in individual rooms that are heated

or cooled with four-pipe fan coil units and optional

electric heating.

• Opening and closing a valve.

• Switching a one-speed fan.

Room Temperature

Controllers with LCD

RDX...

• Outputs for one-stage compressor and

reversing valve or on/off valve actuators

• Output for auxiliary electric heating

• Output for a one-speed fan

• Room or return air temperature control

• Manual heating/cooling changeover

• Operating modes: Normal (heating,

cooling), Energy Saving, Off

• Operating mode changeover input for

remote control

• Selectable installation and control

parameters

• Operating voltage 24 Vac

RDX42.22U Room Temperature

Controller with LCD.

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W.Tech RAA Series Manual de usuario Pagina 29