Semi flush-mount room thermostats

for 2-pipe, 2-pipe with el. heater and 4-pipe fan coil units for use with compressors in DX type equipment

Semi flush-mount RDF300… room thermostats RDF340…

for 2-pipe, 2-pipe with el. heater and 4-pipe fan coil units for use with compressors in DX type equipment

RDF300/RDF400 AC 230 V operating voltage, on/off or  3-position control outputs RDF340… AC 24 V, operating voltage, DC 0…10 V control outputs Output for 3-speed or 1-speed fan 2 multifunctional inputs for keycard contact, external sensor, etc. Operating modes: Comfort, Economy and Protection Automatic or manual fan speed control Automatic or manual heating/cooling changeover Adjustable commissioning and control parameters Minimum and maximum setpoint limitation Mounting on recessed rectangular conduit box, 60.3 mm fixing centers

      Backlit LCD

Fucntions

Maintain room temperature via built-in temperature sensor or external room temperature / return air temperature sensor

Automatic or manual changeover between heating and cooling modeSelect applications via DIP switchesSelect operating mode via the operating mode button on the thermostat1- or 3-speed fan control (automatic or manual)Display current room temperature or setpoint in °C and/or °FMinimum and maximum setpoint limitationButton lock (automatic and manual)2 multifunctional inputs, freely selectable for:

          Operating mode switchover contact  (key card)

          Automatic heating/cooling changeover sensor

          External room temperature or return air temperature sensor

          Dewpoint sensor

          Electric 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· 7-day time program: 8 programmable timers to switch over between Comfort and

Semi flush-mount room thermostats