Belimo EXT-RCF-24 Electronic Thermostat Product Specifications Guide

Belimo EXT-RCF-24 Electronic Thermostat

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

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 (600Ù)
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

Basic Features
Working modes	Cooling, Heating, Ventilating, Auto
Fan speed	3 speed ( Low, Medium, High ) / Auto

Operation Instructions

Operation Instructions
On/Off	Press button.
Setpoint	Press to reduce the setpoint, pressto 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  M to change the working mode- Cooling , Heating , Vent .
Fan speed     Auto speed	Press to select the desired speed- low , medium , high , or auto  . If single speed fan is chosen, only medium speed   will 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.
Sleep To set:         To quit:	The thermostat will go into sleep function after programming.
	Press M button for 3 seconds until  display shows. A countdown will start in the center of the screen. Use or adjust the desired sleep time. The maximum setting is 48 hours. The thermostat will return to working status after 5 seconds.  will flash to start the countdown. The setpoint will be replaced by the sleep setpoint.
	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 M for 10 seconds to enter the menu to set all parameters.

Dimensions (mm)

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 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	–

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

Wiring Diagrams

Installation Manual

Mounting Method

BELIMO Americas

• USA Locations, 43 Old Ridgebury Road, Danbury, CT 06810
• Tel. 800-543-9038, Fax 800-228-8283, marketing@us.belimo.com
• 1049 Fortunato Loop, Sparks, NV 89436
• Tel. 800-987-9042, Fax 800-987-8875, marketing@us.belimo.com
• Canada Locations, 5845 Kennedy Road, Mississauga, Ontario L4Z 2G3
• Tel. 866-805-7089, Fax 905-712-3124, marketing@us.belimo.com
• Latin America and the Caribbean Customer Service
• Tel. 203-791-8396, Fax 203-791-9139, marketing@us.belimo.com
• Belimo Brasil Comércio de Automação Ltda.
• Tel: 55 11 3643-5656, Fax: 55 11 3643 5657, atendimentoaocliente@br.belimo.com

REFERENCE:

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Belimo EXT-RCF-24 Electronic Thermostat Product Specifications Guide

Belimo EXT-RCF-24 Electronic Thermostat Product Specifications Guide