Siemens RDG400 manual Summary, Brief description, Types and features, Applications, Features

	2	Summary
	2.1	Brief description
Applications	• Single-duct system
	• Single-duct system with electrical heater
	• Single-duct system and radiator / floor heating
	• Single-duct system with heating / cooling coil
Features	• Two multifunctional inputs and one digital input for keycard contact, external
	sensor, etc.
	• Operating modes: Comfort, Energy Saving and Protection
	• Automatic or manual heating/cooling changeover
	• Adjustable commissioning and control parameters
	• Minimum and maximum setpoint limitation
	• Backlit LCD
	• AC 24 V operating voltage
	• Modulating PI / P control
	• Output DC 0 … 10 V
	• Output signal inversion as an option
	• Output on/off, PWM or 3-position control
	• Adjustable minimum and maximum limitation of air flow output signal
	• Maintain room temperature via built-in temperature sensor or external room
	temperature / return air temperature sensor
	• Automatic or manual changeover between heating and cooling mode
	• Select applications via DIP switches
	• Select operating mode via the operating mode button on the thermostat
	• Display current room temperature or setpoint in °C and/or °F
	• Minimum and maximum setpoint limitation
	• Button lock (automatic and manual)
	• One digital input, freely selectable for:
	–	Operating mode switchover contact (key card)
	–	Automatic heating/cooling changeover contact
	–	Electrical heater enable
	–	Fault input
	• Two multifunctional inputs, freely selectable for:
	–	Operating mode switchover contact (key card)
	–	Automatic heating/cooling changeover sensor
	–	External room temperature or return air temperature
	–	Dewpoint sensor
	–	Electrical heater enable
	–	Fault input
	• Floor heating temperature limit
	• Reload factory settings for commissioning and control parameters

2.2Types and features

	P	roduct no.	Operating voltage	Number of control outputs					LCD backlight
				ON/OFF	PWM	3-pos	DC 0 … 10 V
	RDG400		AC 24 V	1 1)	1 1)	1 1)		1
	1) Either ON/OFF, 3-position or PWM (triac outputs)
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Siemens	RDG100, RDG100T, RDG110, RDG140, RDG160 Basic Documentation								CE1P3182en
Building Technologies	Summary								28 May 2009