Siemens RDF302 User Manual download pdf (Page 2)

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Siemens RDF300…/RDF340.../RDF400… Room Temperature Controllers N3076en

Building Technologies 11 July 2008

Use

To control the room temperature in individual rooms and zones that are:

• Heated or cooled with 2-pipe fan coil units

• Heated or cooled with 2-pipe fan coil units with electrical heater

• Heated and cooled with 4-pipe fan coil units

• Heated or cooled with compressor in DX-type equipment

• Heated or cooled with compressor in DX-type equipment with electrical heater

• Heated and cooled with compressor in DX-type equipment

The RDF300…/RDF400… controls:

• One single or 3-speed fan

• One or two on/off valve actuators

• One on/off valve actuator and one 1-stage electrical heater

• One 3-position valve actuator

• One 1-stage compressor in DX-type equipment or one 1-stage compressor with

electrical heater

The RDF340… controls:

• One single or 3-speed fan

• One or two DC 0…10 V valve actuators

• One DC 0…10 V valve actuator and one modulating electrical heater (DC 0…10 V)

Use in systems with:

• Heating or cooling mode

• Automatic heating/cooling changeover

• Manual heating/cooling changeover

• Heating and cooling mode (e.g. 4-pipe system)

Functions

• 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 controller

• Single or 3-speed fan control (automatic or manual)

• Display current room temperature or setpoint in °C and/or °F

• Minimum and maximum setpoint limitation

• Keypad lock (automatic and manual)

• 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

– Alarm input

• Advanced fan control function, i.e. fan kick, fan start, selectable fan operation

(enable, disable or depending on heating or cooling mode)

• Purge function together with 2-port valve in a 2-pipe changeover system

• Reminder to clean filters

• Floor heating temperature limit

• Reload factory settings for commissioning and control parameters

• Weekly time program: 8 programmable timers to switch over between Comfort and

Economy mode (RDF400.01)

• Optional backlit LCD (RDF300.02/RDF400.01)

• Optional infrared remote control ( RDF400.01)

pplications

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Siemens RDF302 User Manual Page 2

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