Belimo EXT-CF24-D202-AF Manual

Technical Data
Nominal Voltage 24 VAC
Temperature Display Range 0...55°C [ <0°C : LO, >55°C : HI ]
Sensing Element & Control NTC Thermistor, 100k ohm @ 25°C
System Switch On/Off, Cooling/Heating
Fan Control Switch High-Med-Low or Auto-speed
LCD Display 0.5 K increase/decrease
Setpoint Range 5...35°C
Body Material Fire-retardant ABS
Electrical Ratings Relay output contact 2A Resistive, 1A Inductive,
Fan switch
Control Signal On/Off Control, 3-wires & spring return 2 wires
Cooling or Heating (2-pipe system)
Temperature Range Operating: 0 to 45°C
Storage: 0 to 50°C
Protection Class
II
Wiring Connections Terminal wiring 0.5 ... 1.5 mm2
Agency Approval LV Directive
EMC
Ambient Humidity max. 95% r.h., non-condensing
Weight 140 g
Dimensions (L x H x D) 86 x 86 x 14 (mm)
Degree of Protection IP 30
List Price
EXT-CF24-D202-AF
EXT-CF24-D402-AF
800-543-9038 USA
24 VAC 50/60 Hz
2A Resistive, 1A Inductive,
24 VAC 50/60 Hz
CE according to 2006/95/EC
CE according to 2004/108/EC
$90.00
$100.00
Overview of Functions
Slim type EXT-CF24-D202-AF and EXT-CF24-D402-AF thermostat provides the
foundation for modern fancoil applications.
Features
• Large LCD with blue backlight
• Stylish appearance with hidden buttons
• For 2 or 3 wires on-off controlled devices in 2-pipe FCU system (EXT-CF24-D202-
AF)
• For 2 wires on-off controlled devices in 4-pipe FCU system (EXT-CF24-D402-AF)
• 3 speed / auto-speed for fan controls
• Defrost - low temperature protection
• Temperature off-set adjustment
• Temperature / setpoint display selection
• Memory rentention
• Set point range adjustment
Basic Features
Modes
On/Off - Cooling
Fan speed
3 speed ( Low
Auto speed: difference between setpoint and ambient temperature,
1 K - Low
Defrost Low temperature protection. When the unit in "OFF" status and
ambient temperature lower than 5°C, it will switch on automatically
in heat mode with "
7°C, it will stop automatically.
Backlight The backlight will light up 7 seconds whenever button is pressed.
By pressing "
Valve
When the valve is opening, the icon "
Restart When "RST" button is pressed, the thermostat will restart with last
saved setting.
Memory All last saved parameters will be kept after power failure or power off.
Dimension and Terminals
866-805-7089 CANADA
LCD Electronic Thermostat
EXT-CF24-D202-AF, EXT-CF24-D402-AF
/ Heating
, Medium , High ) / Auto
; 2 K - Medium ; 3 K - High
" showing. When the temperature reached
", backlight light up 30 seconds.
" displays.
24 VAC Neutral N (comm)
Output for fan - High speed
Output for fan - Medium speed
Output for fan - Low speed
Output for actuator - Cool
Output for actuator - Heat
24 VAC Live L
203-791-8396 LATIN AMERICA / CARIBBEAN