Regina RCF-230CD User manual

RCF-230CD
RCF-230CD
Room thermostat with communication for
fan-coil applications with 230V AC on/off
outputs.
Intended to control heating and/or cooling in 2- or
4-pipe installations. Setpoint and fan speed are set using
the buttons on the front. Communication via Modbus,
BACnet or EXOline.
RCF-230CD is a thermostat for controlling heating and/
or cooling in a room via on/off outputs. It also has a
function for three-speed fan control (for fan-coil).
The thermostat uses 230 V AC supply voltage. It has triac
outputs for 230 V AC heating/cooling and built-in
230 V AC fan relays, which means that a separate relay
module is not required for the fan and actuators.
RCF-230CD has communication via RS485 (Modbus,
BACnet or EXOline) for integration into systems. The
device can be configured using the Regio tool© software,
downloadable free of charge from Regin’s website
(www.regincontrols.com).
Applications
The thermostat is suitable in buildings where you want
optimal comfort and reduced energy consumption, for
example offices, schools, shopping centres, airports, hotels,
hospitals etc.
Easy to install
Its modular design, featuring a separate bottom plate
for wiring, makes the thermostat easy to install and
commission. The bottom plate can be put into place
before the electronics are installed. Mounting takes place
directly on a wall or wall socket.
Control function
The thermostat controls heating and/or cooling in a room
via on/off outputs. It has a settable hysteresis and the
setpoint can be changed using the INCREASE ( ) and
DECREASE ( ) buttons on the front.
See also the section ”Display information and handling”
on page 3.
Built-in or external sensor
The thermostat has a built-in sensor. Alternatively, the
input for an external PT1000-sensor can be used.
On/off control outputs
RCF-230CD has outputs for control of e.g. 230 V AC on/
off actuators.
Communication protocols
The room thermostat has automatic detection and
switch-over between Modbus and EXOline. BACnet
must however be set manually via the display or by using
Regio tool©.
revision
04 2016
Short facts about RCF-230CD
• Supply voltage 230 V AC
• Inputs for presence detector and/or
window contact
• Built-in relays for a 3-speed fan,
230 V AC
• Input for automatic change-over
cooling/heating
• BTL tested from software version 1.2-1-00

2
RCF-230CD
2- and 4-pipe installations
In 2-pipe installations, the same pipe system is used
for heating and cooling depending on the current
season. Chilled water circulates through the system
during summer and heated water during winter When
RCF-230CD is configured for a 2-pipe system, output
DO4 is used for controlling heating or cooling (depending
on the season (fluid temperature)) via an actuator, a valve
or similar (change-over function).
In 4-pipe installations, there are two separate water
systems for heating and cooling with separate valves. The
thermostat uses two outputs for control of heating and
cooling in sequence.
Automatic cooling/heating change-over
RCF-230CD has an input for change-over which is used
when the thermostat is configured for 2-pipe installations.
It sets output DO4 to operate with heating or cooling
function depending on the fluid temperature (season).
The change-over input can be connected to a
potential-free relay contact or a PT1000-sensor.
The input function for the relay contact can be set to
normally open (NO) or normally closed (NC). If the
change-over input is not used, we recommend that it is
left disconnected and set to NO (factory setting).
When using a sensor, it must be mounted so that it can
measure the temperature on the supply pipe to the coil.
To ensure satisfactory function, the system must also
have continuous primary circuit circulation. Using a
sensor, the output function is set to heating when the
fluid temperature exceeds 28°C and to cooling when the
temperature falls below 16°C.
At heating function “HEAT” is shown in the display and
at cooling function “COOL” is shown.
Occupancy detection for saving energy
By connecting an occupancy detector or a keycard switch
(in hotels) to a digital input, you can alternate between
Comfort and Economy mode. This way, the temperature
is controlled from requirement, making it possible to
save energy while maintaining the temperature at a
comfortable level.
Using occupancy detection, you can delay activation and/
or inactivation of Comfort mode to avoid switching mode
if someone temporarily enters or leaves the room.
A window contact can be connected to either digital
input 1 or universal input 1. The window contact will
set the controller to “Off” mode if a window is opened,
thereby minimising energy consumption.
Operating modes
There are four different operating modes, Comfort,
Economy (Standby), Off and Window. Switching between
these modes is performed locally or via the SCADA
system.
Comfort: is shown in the display and the room is in
use. The temperature is held at the comfort level with
a deadband (DB) between activation of heating and
cooling.
Economy (Standby): “Standby” is shown in the display.
The room is in an energy saving mode and is not used
at the moment. This can for example be during nights,
weekends, evenings etc. or during daytime when there is
no one in the room. The thermostat is prepared to change
operating mode to Comfort if someone enters the room.
Heating and cooling have freely adjustable setpoints.
Off: ”Off” is shown in the display and the backlight
is switched off. The thermostat neither heats or cools
and the fan stops (except if mould protection has been
selected, in which case the fan will keep running). Off
mode is selected by pressing the On/Off button.
Window: is shown in the display and the thermostat is
in off mode and the fan stops (except if mould protection
has been selected, in which case the fan will keep
running).
Fan speed control
The current fan speed is shown in the display and can be
set manually to LowàMediumàHighàAuto by pressing
the fan button. In Auto mode, fan speed is controlled by
the difference between the setpoint and actual value of
the room.
Valve
output
Heating:
X = TON - Room temp.
Cooling:
X = Room temp. - TON
TOFF
TON
0123
1
0
1
2
3
Fan
output
X
When there is no heating or cooling demand in the Auto
position, the fan will run at its lowest setting. This can be
changed to make the fan stop when there is no heating
or cooling demand. The fan is also deactivated when in
modes Off and Window. However, it will continue to run
if mould protection has been configured.
If the fan has been configured to not be affected by
controller output, the ”AUTO” option will not be shown
when pressing the fan button.
Mould protection
When this function has been configured, the fan will
always run at the lowest speed and circulate air in the
room to minimise the risk of mould growth in the fan-coil
unit. The function is deactivated on delivery.
WINTER SUMMER

3
RCF-230CD
Automatic valve exercise
To ensure proper functionality, the thermostat has a
function for valve exercise, even during periods when
they are not in use. At regular intervals the output is
overridden to close for a moment in order to open
and close the valves. The exercise interval can be set
individually for heating and cooling. The exercise function
can also be inactivated if desired.
Display information and handling
The display has the following indications:
Occupancy
indication
Open window
Indoor /
outdoor
temp.
Setpoint
Changeable value
Current room
temperature or
setpoint in °C to
one decimal point
COOL/HEAT:
Shows if the unit
controls according to
the heating or cooling
setpoint
Off mode
(only the
temperature
is shown)
STANDBY:
Economy mode
indication
SERVICE:
Setting parameters
Fan
Auto/Man
indication
for the fan
Current fan speed
(Low, Medium, High)
The display is handled using the buttons on the
thermostat:
On/Off button
INCREASE setpoint
DECREASE setpoint
Fan speed
On/Off button
By pressing the On/Off button, RCF-230CD will switch
between Off mode and Comfort/Economy mode.
Setpoint buttons
The INCREASE and DECREASE buttons are used to
change the setpoint value. The basic setpoint can be
changed within adjustable min./max. limits.
Fan button
By pressing the fan button, the fan speed is set to to Low,
Medium, High or Auto.
Blocking
The buttons of the controller, the configuration menu
and the manual fan control can all be blocked in order
to prevent settings from being changed by unauthorized
individuals.
Configuration
The factory settings can be changed by using the display
and buttons on the thermostat, or alternatively by using
Regio tool©.
The parameter values are changed with the INCREASE
and DECREASE buttons and changes confirmed with the
On/Off button.
The parameter list can be found in the instruction for
RCF-230CD and in the manual for RCF.
Display configuration
The desired contents of the display can be configured via
the parameter list. There are four alternatives:
1. The actual value is normally shown. The setpoint
is shown when it is changed using the INCREASE
and DECREASE buttons.
2. The actual value is normally shown. The setpoint
displacement is shown when it is changed using
the INCREASE and DECREASE buttons.
3. The setpoint value is shown (factory setting).
4. The setpoint adjustment is shown.
Control principles
Control principle at cooling function
During control of cooling, the output is activated when
the temperature rises above the setpoint by the set
hysteresis. The output closes when the setpoint value is
reached.
Setpoint
Output
On
O
Control principle at heating function
During control of heating, the output is activated when
the temperature falls below the setpoint by the set hyster-
esis. The output closes when the setpoint value is reached.

4
RCF-230CD
Technical data
Supply voltage 230 V AC ±10 %, 50/60 Hz
Power consumption 3 W, class II construction
Ambient temperature 0...50°C
Storage temperature -20...+70°C
Ambient humidity Max. 90 % RH
Protection class IP20
Communication RS485 (Modbus or EXOline with automatic detection/switching), or BACnet
Modbus 8 bits, 1 or 2 stop bits. Odd, even (FS) or no parity.
BACnet MS/TP slave and master
Communication speed 9600, 19200, 38400 bps (EXOline, Modbus and BACnet) or 76800 bps (BACnet only)
Pollution degree 2
Overvoltage category 3
Display LCD with backlight
Built-in temperature sensor NTC type, measuring range 0...50°C
Terminal blocks Lift type for max. cable area 2.1 mm2
Material, casing Polycarbonate, PC
Colour
Cover Polar white RAL9010
Bottom plate Light grey
Mounting Indoor, wall mounting, fits on a standard wall socket
Dimensions (HxWxD) 120 x 102 x 29 mm
Weight 0.18 kg
LVD, Low Voltage Directive / EMC emissions & immunity standards: This product
conforms to the EMC and LVD requirements in the European harmonised standards
EN 60730-1:2000 and EN 60730-2-9:2002. It carries the CE mark.
RoHS: This product conforms to the Directive 2011/65/EU of the European Parliament
and of the Council.
Inputs
External sensor, AI1 PT1000-sensor. Suitable sensors are TG-R5/PT1000, TG-UH/PT1000,
TG-A1/PT1000 and TG-K3-PT1000 from Regin.
UI1 Change-over, potential-free contact or PT1000-sensor. Suitable sensor is TG-A1/PT1000
from Regin or window contact.
Presence/window contact, DI1 Potential free contact. A suitable occupancy detector is IR24-P from Regin.
Outputs
Fan control, DO1, 2, 3 3 outputs for speed I, II and III, 230 V AC, max. 3 A fan-coil
Valve, DO4, DO5 2 outputs, 230 V AC, max. 300 mA (3 A initially)
Settings
Possible settings Factory setting (FS)
Basic setpoint 5...50°C (0...100°C with Regio tool©) 22°C
Internal sensor calibration -10...10 K 0 K
External sensor calibration -10...10 K 0 K
Hysteresis 0.5...50 K 1 K
DB, deadband at Comfort 0.1...10 K 2 K
Installation type 2- or 4-pipe 2-pipe
Input DI1 Normally open (NO) or normally closed (NC) NO
Input UI1 NO or NC, when used as a relay contact input NO
Output DO4 NO or NC NC
Output DO5 NO or NC NC
Valve exercise Individually settable for heating and cooling outputs 23 hours interval

RCF-230CD
Head office Sweden
Phone: [phone]
Web: www.regincontrols.com
Mail: [email protected]
Wiring and dimensions
Product documentation
Document Type
Instruction RCF-230CD Instruction for RCF-230CD
Manual RCF Manual for the RCF range
The documents can be downloaded from www.regincontrols.com.
B
Automatic change-over
between cooling/heating
10 L 230 V AC L Supply voltage
11 - Not connected
12 N 230 V AC N Supply voltage (internally connected to terminal 13)
13 N Fan-coil common / 230 V AC N Common fan-coil connector (internally connected to terminal 12)
20 DO1 Fan-coil output 1 for fan control Relay, 230 V AC*, 3 A
21 DO2 Fan-coil output 2 for fan control Relay, 230 V AC*, 3 A
22 DO3 Fan-coil output 3 for fan control Relay, 230 V AC*, 3 A
30 - Not connected
31 DO4 Digital output 4 for heating/cooling Digital output. 230 V AC, max. 300 mA (3 A initially).
32 CDO45 Common DO4 & 5 Common connection for digital outputs 4 and 5
33 DO5 Digital output 5 for cooling Digital output. 230 V AC, max. 300 mA (3 A initially).
40 DI Digital input Floating (potential-free) window contact or occupancy contact.
Configurable for NO/NC.
41 Agnd Analogue ground
42 AI Analogue input PT1000, external room sensor or supply sensor
43 UI Universal input Change-over input, floating (potential-free) switch (configurable for NO/
NC) or PT1000, alternatively a window contact.
44 Agnd Analogue ground
50 Agnd Analogue ground
51-52 - Not connected
53 A RS485-communication A
54 B RS485 communication B
*The sum of the current through DO1-DO3 is protected by a fuse
120 mm
29 mm
102 mm