Belimo EXT-RCF-24 User manual

O56001 03/12 - Subject to change. © Belimo Aircontrols (USA), Inc.
800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
Application
EXT-RC series of proportional and floating thermostats are used to control room
temperature in commercial applications.
Features
• LCD with green backlight
• Detects and displays room temperature
• On/Off capability of cooling and heating equipment
• Room temperature setting
• Fahrenheit (°F) or Celsius (°C) display
• Selectable single or three speed fan control
• Remote sensor input
Technical Data
Power AC 24V +10%, 50Hz/60Hz
Output signal
EXT-RCP-24
AC 24V x 2 (0.5A resistive)
0-10 VDC (5 mA) / 4-20 mA (600Ω)
Output signal
EXT-RCF-24
AC 24V x 2 (0.5A resistive)
floating point control
Input signal dry contact (NO)
Dimensions 3.4” w x 3.4” h x 0.9” d [86mm x 86mm x 23mm]
Fixing screw width 60mm (standard)
Set temperature range 0° to 99.5° adjustable
Accuracy displayed 0.1°
Accuracy +0.5°
Rated power < 1W
Sensor type NTC
Display LCD
Basic Features
Working modes Cooling , Heating , Ventilating , Auto
Fan speed 3 speed ( Low , Medium , High ) / Auto
Operation Instructions
On/Off Press button.
Setpoint Press to reduce the setpoint, press to increase the setpoint
in 0.5°C increments. The setpoint will be confirmed automatically
after 5 seconds and then will return to display status. Press or
to check setpoint.
Mode Press to change the working mode- Cooling , Heating ,
Vent .
Fan speed
Press to select the desired speed- low , medium , high ,
or auto . If single speed fan is chosen, only medium speed will
be available.
Auto speed The fan speed will be changed automatically to the following:
Low speed- when room temperature is 1° difference with setpoint.
Med. speed- when room temperature is 2° difference with setpoint.
High speed- when room temperature is 3° difference with setpoint.
Sleep Thermostat will go into sleep function after programming.
To set:
Press button for 3 seconds until display shows. A countdown
will start in the center of the screen. Use or to adjust the
desired sleep time. The maximum setting is 48 hours. Thermostat
will return to working status after 5 seconds. will flash to start
countdown. The setpoint will be replaced by the sleep setpoint.
To quit:
When the thermostat is in sleep function, will flash. Press or
to quit.
Keypad lock
Press and for 10 seconds. This will activate the display.
under this function, the keypad is locked. To unlock, press and
for 10 seconds until disappears.
Set parameters
With thermostat off, press for 10 seconds to enter the menu to set
all parameters.
Dimensions (mm)
LCD Electronic Thermostat
EXT-RCF-24, EXT-RCP-24
1

O56001 03/12 - Subject to change. © Belimo Aircontrols (USA), Inc.
800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
Parameter Settings Wiring Diagrams
24VAC
EXT-RCF-24
L
N
OPEN
CLOSE
Floating Control
Cooling/Heating
RS
Input
B
A
~
COM
LOW
MED
HI
L
VO
VC
TR
Fan
Input
Remote Sensor
EXT-RCF-24
24VAC
EXT-RCP-24
L
N
Modulating Control
Cooling/Heating
RS
Input
B
A
~
LOW
MED
HI
L
TR
Fan
Input
Remote Sensor
M0-10V
/4-20mA
V+
~
EXT-RCP-24
Modulating Output Options
LCD Electronic Thermostat
EXT-RCF-24, EXT-RCP-24
Note: Switch (5 pole switch on PCB)
Location ON OFF
1 120 ohm resistance between AB wires No resistance between AB wires
2 Port 1 modulation 0-20 mA Off
3 Port 1 modulation 0-10 VDC Off
4 Port 2 modulation 0-20 mA Off
5 Port 3 modulation 0-10 VDC Off
Parameter Description Default Range
1 Power on status (0: off, 1: on, 2: hold) 2 -
2 Fan speed (0: single speed, 1: three speed) 1 -
3 Fan mode (DA: When the temperature
reaches the set-point, the valve will close
with the fan still running. DB: When the
temperature reaches the set-point, the
valve will close and the fan will shut off.)
0-
4 Sensor selection (0: internal, 1: remote) 0 -
5 Temp. display (0: Celsius, 1: Fahrenheit) 0 -
6 Temperature calibration 0 -20 to +20
7 Minimum setpoint 5° / 41° 0 to 99
8 Maximum setpoint 35° / 96° 0 to 99.5
9 Dead band 2 -

O56001 03/12 - Subject to change. © Belimo Aircontrols (USA), Inc.
800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
Installation Manual
Mounting Method
1Open the back panel with a screwdriver. 2Connect the wires per the wiring diagram.
3Secure the base with the screws provided. 4Reattach the front panel.
LCD Electronic Thermostat
EXT-RCF-24, EXT-RCP-24

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