Belimo EXT-RCFB-24 User Manual

PF_LA14 04/18 - 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 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-RCPB-24
AC 24V x 2 (0.5A resistive)
0-10 VDC (5 mA) / 4-20 mA (600Ω)
Output signal
EXT-RCFB-24
AC 24V x 2 (0.5A resistive)
fl oating 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 confi rmed 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 fl ash to start
countdown. The setpoint will be replaced by the sleep setpoint.
To quit:
When the thermostat is in sleep function, will fl ash. 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-RCFB-24, EXT-RCPB-24
1

Belimo EXT-RCFB-24 Specifications

General

Brand	Belimo
Model	EXT-RCFB-24
Category	Thermostat
Language	English

Summary

Application and Features

Application Overview

Describes the use of EXT-RC series thermostats for room temperature control in commercial applications.

Key Product Features

Highlights the LCD display, temperature detection, On/Off control, setting options, and sensor inputs.

Technical and Basic Features

Technical Data Summary

Lists power, output signals, input signals, dimensions, and sensor specifications for the thermostat.

Basic Operating Modes

Details the available working modes: Cooling, Heating, Ventilating, and Auto.

Fan Speed Control Options

Explains the fan speed settings, including 3 speeds (Low, Medium, High) and Auto mode.

Operation Instructions

On/Off and Setpoint Adjustment

Instructions for turning the thermostat On/Off and adjusting the setpoint temperature.

Mode and Fan Speed Selection

Guide on how to change the operating mode and select fan speed.

Automatic Fan Speed Operation

Details how fan speed automatically adjusts based on room temperature difference.

Sleep Functionality

Procedure for setting and quitting the thermostat's sleep function with countdown.

Keypad Lock and Parameter Access

Instructions for locking/unlocking the keypad and accessing the parameter settings menu.

Configuration and Wiring

Parameter Settings

Details adjustable parameters such as power status, fan speed, fan mode, sensor selection, and temperature display.

Modulating Output Options

Explains configuration for output signals like 120 ohm resistance, 0-20 mA, and 0-10 VDC.

Wiring Diagrams

Provides wiring diagrams for EXT-RCF-24 and EXT-RCP-24 models with remote sensor connection.

Installation Method

Step-by-Step Mounting

Illustrates the process of opening the back panel, connecting wires, securing the base, and reattaching the front panel.