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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.
New!