Technical data

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Siemens RDG400KN Basic documentation CE1P3192en
Building Technologies Summary 20 Jul 2010
2. Summary
2.1 Types
Product no.
Stock
number
Features
Operating
voltage
Number of control outputs
Backlit
LCD
ON/OFF PWM 3-pos DC 0…10 V
RDG400KN S55770-T165
AC 24 V 1
1)
1
1)
1
1)
1

1) Selectable: ON/OFF, PWM or 3-position (triac outputs)
2.2 Ordering
 When ordering, please indicate both product no. / stock no. and name:
E.g. RDG400KN / S55770-T165 room thermostat
 Order valve actuators separately
2.3 Functions
VAV systems via ON/OFF or modulating control outputs:
 Single-duct system
 Single-duct system with electric heater
 Single-duct system and radiator / floor heating
 Single-duct system with heating / cooling coil
The room thermostats are delivered with a fixed set of applications.
The relevant application is selected and activated during commissioning using one
of the following tools:
 Synco ACS
 ETS3 Professional
Parameter and application download with ETS3 will be implemented later
 Local DIP switch and HMI
 Operating modes: Comfort, Economy (Energy Saving) and Protection
 Output for VAV box / damper: DC 0…10 V / 3-position (triac)
 Output for heating / cooling coil: ON/OFF, PWM or 3-pos (triac) / DC 0..10V
 Output signal inversion as an option (DC 0...10 V  DC 10...0 V)
 Automatic or manual heating / cooling changeover
 Backlit display
 AC 24 V operating voltage
 Room temperature control via built-in temperature sensor or external room
temperature / return air temperature sensor
 Changeover between heating and cooling mode (automatic via local sensor or
bus, or manually)
 Selection of applications via DIP switches or commissioning tool (ACS700).
Parameter and application download with ETS3 will be implemented later
 Select operating mode via operating mode button on the thermostat
Use
Features
Functions