RDF30U
Technical Instructions
Document No. 155-335
September 27, 2007
Room Temperature Controller
with LCD for Four-Pipe Fan
Coil Units
Siemens Industry, Inc.
Description
Room temperature controller with LCD for four-pipe fan coil units.
Features
•
Outputs for separate, heating and cooling on/off valve actuators.
•
Outputs for a three-speed fan.
•
Control depending on the room or the return air temperature.
•
Operating modes: Normal, Economy and Standby.
•
Operating mode changeover input for remote control (Day/Night).
•
Air movement control function for avoiding damage resulting from moisture.
•
Selectable installation and control parameters.
•
Display of room temperature or setpoint (selectable).
•
Electronic minimum and maximum setpoint limits.
•
Operating
voltage 24 Vac.
Application
Typical use:
•
For controlling room temperature in individual rooms that are heated or cooled with
four-pipe fan coil units.
•
For opening or closing two valves and for switching a three-speed fan.
Suitable for four-pipe fan coil unit systems with:
•
automatic heating/cooling changeover.
•
continuous heating or cooling mode.
Product Number
RDF30U
