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LCD Electronic Thermostat
EXT-RCF-24, EXT-RCP-24
Application
EXT-RC series of proportional and fl oating 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
Output signal
EXT-RCF-24
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
Rated power < 1W
Sensor type NTC
Display LCD
AC 24V x 2 (0.5A resistive)
0-10 VDC (5 mA) / 4-20 mA (600Ω)
AC 24V x 2 (0.5A resistive)
fl oating point control
+0.5°
Basic Features
Working modes
Fan speed
Cooling , Heating , Ventilating , Auto
3 speed ( Low , Medium , High ) / Auto
Operation Instructions
On/Off
Setpoint
Mode
Fan speed
Auto speed
Sleep
To set:
O56001 03/12 - Subject to change. © Belimo Aircontrols (USA), Inc.
To quit:
Keypad lock
Set parameters
button.
Press
Press
to reduce the setpoint, press to increase the setpoint
in 0.5°C increments. The setpoint will be confi rmed automatically
after 5 seconds and then will return to display status. Press or
to check setpoint.
to change the working mode- Cooling , Heating ,
Press
.
Vent
Press to select the desired speed- low , medium , high ,
. If single speed fan is chosen, only medium speed will
or auto
be available.
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.
Thermostat will go into sleep function after programming.
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 fl ash to start
countdown. The setpoint will be replaced by the sleep setpoint.
When the thermostat is in sleep function, will fl ash. Press or
to quit.
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.
With thermostat off, press for 10 seconds to enter the menu to set
all parameters.
Dimensions (mm)
800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
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LCD Electronic Thermostat
EXT-RCF-24, EXT-RCP-24
Parameter Settings
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
0reaches 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.)
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 -
Modulating Output Options
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
Note: Switch (5 pole switch on PCB)
Wiring Diagrams
Floating Control
Cooling/Heating
Fan
EXT-RCF-24
M
Modulating Control
Cooling/Heating
Fan
VC
VO
MED
LOW
V+
HI
MED
LOW
L
HI
L
CLOSE
OPEN
EXT-RCF-24
0-10V
/4-20mA
EXT-RCP-24
COM
~
A
B
Input
RS
Input
RS
24VAC
Remote Sensor
~
~
24VAC
A
B
Remote Sensor
N
Input
L
TR
N
Input
L
TR
EXT-RCP-24
O56001 03/12 - Subject to change. © Belimo Aircontrols (USA), Inc.
800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
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Installation Manual
Mounting Method
LCD Electronic Thermostat
EXT-RCF-24, EXT-RCP-24
Open the back panel with a screwdriver.
1
Secure the base with the screws provided.
3
Connect the wires per the wiring diagram.
2
Reattach the front panel.
4
O56001 03/12 - Subject to change. © Belimo Aircontrols (USA), Inc.
800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
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Belimo worldwide: www.belimo.com
BELIMO Americas
USA Locations, 43 Old Ridgebury Road, Danbury, CT 06810
Tel. 800-543-9038, Fax 800-228-8283, [email protected]
1049 Fortunato Loop, Sparks, NV 89436
Tel. 800-987-9042, Fax 800-987-8875, [email protected]
Canada Locations, 5845 Kennedy Road, Mississauga, Ontario L4Z 2G3
Tel. 866-805-7089, Fax 905-712-3124, [email protected]
Latin America and the Caribbean Customer Service
Tel. 203-791-8396, Fax 203-791-9139, [email protected]
Belimo Brasil Comércio de Automação Ltda.
Tel: 55 11 3643-5656, Fax: 55 11 3643 5657, [email protected].
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