REGIN RCFD-230C Fan Coil Room Thermostat Instructions

: June 13, 2024
: REGIN

Table of Contents

Safety Precautions
Function
Technical Data
Installation
Wiring
Settings
Handling
Customers Support
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

REGIN RCFD-230C Fan Coil Room Thermostat

REGIN RCFD-230C Fan Coil Room Thermostat

Safety Precautions

Note! More information about the product can be found in the manual, which is available for download from www.regincontrols.com

Caution! Read and understand the instruction before using the product.

Caution! Ensure that the installation complies with local safety regulations.

Warning! Before installation or maintenance, the power supply must first be disconnected in order to prevent potentially lethal electric shocks! Installation or maintenance of this unit should only be carried out by qualified personnel. The manufacturer is not responsible for any eventual damage or injury caused by inadequate skills during installation, or through removal of or deactivation of any security devices.

Function

The room thermostat regulates the heating and/or cooling in a room via on/off outputs for 2- or 4 pipe installations, and has a function for three speed fan control. The large LCD touch screen displays status and is also used to access all parameters, such as setpoint, hysteresis, fan speed etc.

The unit has a built-in temperature sensor for controlling the room temperature. The change-over function can be controlled using an external PT1000 sensor or via a digital input connected to any potential free contact. Functions such as mould protection and automatic valve exercise ensures a proper functionality and a problem free installation over time.

Technical Data

Supply voltage	230 V ~ (207…253 V ~ 50/60 Hz)
Power consumption	< 2 VA
Protection class	IP30
Ambient humidity	10…90 %RH (non-condensing)
Ambient temperature	0…50 °C
Measuring range, temperature	0…50 °C
Sensor element, temperature	NTC
Accuracy, temperature	±0.5 K
Display	Built-in
Display type	LED-backlit LCD
Output signal, temperature	NTC
Setpoint adjustment	5…35 °C
Mounting	Room (flush-mounted with screw dis- tance cc 60 mm)
Installation	Fan-coils, 2- or 4-pipe
Digital inputs (DI)	1 x Closing potential-free contact
Digital outputs (DO)	3 x Relay outputs for 3-step fan control, 230 V

AC, Max. 5 A 2 x Relay outputs for On/Off valve actuators, 230 V AC, Max. 5 A
Analogue inputs (AI)| 1 x PT1000
Change-over function| Automatic
Communication port| 1
Internal serial port, type| RS485
Internal serial port, built-in protocol| Modbus (RTU)
Internal serial port, communication speed| 9600 bps (4800…38400 bps)
Internal serial port, parity| Even (Even, Odd, None)
Internal serial port, stop bit| 1 (1 or 2)
Cable connection| Screw terminals max. 1.5 mm2 (AWG 16)
Dimensions, external (WxHxD)| 95 x 95 x 50.5 mm

Installation

Separate the back plate from the display part with a small screw driver. Insert the screw driver in the grooves at the bottom of the unit.
Connect the wires to the terminals.
Place the back plate over the electrical wallbox and fasten it on the wall using the mounting holes.
Clip the display back onto the back plate.

Wiring

Terminal	Description
L	Supply voltage
N	Supply voltage
FAN1	230 V AC Relay 1
FAN2	230 V AC Relay 2
FAN3	230 V AC Relay 3
Heat	230 V AC Relay 4
Cool	230 V AC Relay 5
GND	GND (for DI)
DI	Digital input for presence detection, hotel key card etc
Temp	Analogue input for external PT1000 sensor, change-over
GND	Agnd for terminal _Temp

_ Serial communication port, Com N
A| Serial communication port, Com A
B| Serial communication port, Com B

Wiring
Wiring

Settings

The thermostat settings can be controlled in one of the following ways:

Display buttons: user settings such as temperature setpoint adjustment and fan speed
Parameter list: quick configurations for installer
Modbus variables: advanced thermostat control via Modbus communication

The parameter list is entered by pressing the Arrow up and Arrow down buttons in the display simultaneously for five seconds.

Table 1 Buttons available in the display

Symbol	Description
Changeover button to switch between heating and cooling via the display
Arrow up/Increase button
On/Off button
Arrow down/Decrease button
Fan button to regulate the fan speed via the display

Note! All parameters and variables are listed in the manual.

Handling

The display behaves differently depending on the mode and the state that the thermostat is currently operating in.
The thermostat can be in one of the following states:

Off: Energy saving state where the thermostat neither heats nor cools. No background light is lit, only the On/Off button is shown.
Standby: Energy saving state where reduced heating or cooling takes place.
Occupied: Comfort state when someone is present in the room. Optimal heating and cooling takes place.

The thermostat can be in three different modes when in Standby or Occupied state:

Idle mode: The thermostat has been inactive during a set time span.
All buttons and segments, except the two arrows, are dimmed down in the display.
Active mode: The thermostat is activated, but no changes are made.
The display shows either the calculated setpoint or the current room temperature.
Setpoint mode: This mode is activated when pressing one of the arrows when in Active mode. Either the calculated setpoint or the current user defined setpoint adjustment are shown.