RCF-230D
RCF-230D
Room thermostat for fan-coil applications
with on/off outputs
• Supply voltage 230 V AC
• On/off temperature control, 230 V AC outputs
• Built-in relays for a 3-speed fan, 230 V AC
RCF-230D is a room thermostat 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.
• Backlit display
• Input for occupancy detector or window contact
• Input for automatic change-over cooling/heating
RCF-230D is a thermostat for controlling heating and/
or cooling in a room using on/off outputs. It also has a
function for three-speed fan control (for fan-coil).
The thermostat has supply voltage 230 V AC. 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.
Applications
The thermostat is suitable in buildings where you want
optimal comfort and reduced energy consumption, for
example offices, schools, shopping centres, airports, hotels
and hospitals etc.
Design
The thermostat has a modern design, inspired by the
award-winning design of Regin’s Regio controllers.
Simple installation
The modular design with 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 is directly
on the wall or on a wall socket.
Control function
The thermostat controls heating and/or cooling in a
room via on/off outputs. It has settable hysteresis, factory
setting 1 K (°C). The setpoint can be changed using the
INCREASE ( ) and DECREASE ( ) buttons on the
front.
See also the section ”Display information and handling”
on page 2.
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-230D has outputs for controlling 230 V AC on/off
actuators or similar.
2- and 4-pipe installations
In 2-pipe installations, the same water system is used for
heating and cooling, depending on the season. Chilled
water is distributed in the system during summer
and heated water during winter. When RCF-230D 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.
revision
04 2011
WINTER SUMMER
2
RCF-230D
RCF-230D
Automatic change-over cooling/heating (so-called
change-over function)
RCF-230D 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, it is possible to change
between Comfort and Economy mode. This way you can
control the temperature according to requirement, which
saves energy and keeps the temperature at a comfortable
level.
Using occupancy detection, it is possible to delay
activation and/or inactivation of Comfort mode, to avoid
switching mode if a person temporarily enters or leaves
the room.
Alternatively, a window contact can be connected to the
input. This sets the thermostat to Off if a window is open
with the purpose of minimising energy consumption.
Operating modes
There are four different operating modes, Comfort,
Economy (Standby), Off and Window. Switch-over
between these modes is performed locally.
Comfort: is shown in the display and the room is in
use. The temperature is held at the comfort level with a
neutral zone (NZC) between activation of heating and
cooling (factory setting for NZC = 2 K (°C)).
Economy (Standby): “Standby” is shown in display.
The room is in energy save 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.
The heating and cooling setpoints are freely adjustable.
Factory settings: heating=15°C, cooling=30°C.
Off: ”Off” is shown in the display and the backlight is
switched off. The thermostat does not heat or cool and
the fan is inactive, unless mould protection function has
been configured, in which case the fan will continue
to run. There is also a frost protection function for this
operating mode, which will activate the heating output
if the room temperature falls below +8°C. Off mode is
selected by pressing the On/Off button.
Window: is shown in the display. The thermostat is in
Off mode but the display is lit.
Automatic fan speed control
The current fan speed is shown in the display and can
be set manually to Low, Medium or High speed. It can
also be set to Auto, which means that the fan speed is
controlled by the difference between the room’s actual
value and setpoint value.
Valve
output
Heating:
X = T
ON
- Room temp.
Cooling:
X = Room temp. - T
ON
T
OFF
T
ON
0
1 2
3
1
0
1
2
3
Fan
output
X
The fan speed is set to LowàMediumàHighàAuto by
pressing the fan button.
When there is no heating or cooling demand in the Auto
position, the fan will run at the lowest speed. This can be
changed in parameter 31 so that the fan stops when there
is no heating or cooling demand. The fan is inactive in the
Off and Window modes. However, it will continue to run
if mould protection has been configured.
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.
Automatic exercise of valves
The thermostat has a function for exercising the valves,
even during periods when they are not being used, to
ensure proper function. Every 23 hours (factory setting),
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)
3
RCF-230D
The display is handled using the buttons on the
thermostat:
On/Off button
INCREASE temperature setpoint
DECREASE temperature setpoint
Fan speed
On/Off button
By pressing the On/Off button, RCF-230D will switch
between Off mode and Comfort/Economy mode.
Setpoint buttons
The INCREASE and DECREASE buttons are used for
changing the setpoint value. What is shown in the display
can be configured via the parameter list. There are four
alternatives:
1. The actual value is shown, or, when the setpoint
has been changed via the INCREASE and
DECREASE buttons, the setpoint value is
shown in the display (together with the setpoint
(thermometer) symbol).
2. The actual value is shown, or, when the setpoint
has been changed via the INCREASE and
DECREASE buttons, the setpoint adjustment
value is shown in the display (together with the
setpoint (thermometer) symbol).
3. The setpoint value is shown (factory setting).
4. The setpoint adjustment is shown.
When the setpoint adjustment is displayed (alternatives 2
and 4), the basic setpoint is 22°C.
The minimum limitation of the setpoint value is settable
5...22°C and the maximum limitation is settable
22...35°C.
Fan button
By pressing the fan button, you set the fan speed to Low,
Medium, High and Auto.
Configuration via the parameter list
The factory settings are changed in the parameter list
shown in the display using the buttons on the thermostat.
The parameter values are changed with the INCREASE
and DECREASE buttons and changes are confirmed with
the On/Off button.
The parameter list can be found in the instruction for
RCF-230D.
Control principles
Control principle at cooling function
When the controller is set to cooling, the output is
activated when the temperature rises above the setpoint
by the set hysteresis. The output opens when the setpoint
value is reached.
Control principle at heating function
When the controller is set to heating, the output is
activated when the temperature falls below the setpoint
by the set hysteresis. The output opens when the setpoint
value is reached.
4
RCF-230D
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
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 maximum cable area 2.1 mm
2
Material, casing Polycarbonate, PC
Colour
Cover Polar white RAL9010
Bottom plate Light gray
Mounting Indoor, wall mounting, fits on a standard wall socket
Dimensions (HxWxD) 120 x 102 x 29 mm
Weight 0.18 kg
This product conforms to the EMC and LVD requirements in the European harmonised
standards EN 60730-1:2000 and EN 60730-2-9:2002 and carries the CE mark.
Inputs
External sensor, AI1 PT1000-sensor. Suitable sensors are TG-R5/PT1000, TG-UH/PT1000 and
TG-A1/PT1000 from Regin. The setpoint range is 5…35°C.
Change-over, UI1 Potential-free contact or PT1000-sensor. A suitable sensor is TG-A1/PT1000 from Regin.
Occupancy/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, 300 mA max. (20 A max. 20 ms)
Settings
Factory setting (FS)
Setpoint 5...35°C 22°C
Setpoint, min. limit 5...22°C Setpoint, max. limit 22...35°C Internal sensor calibration -10 K...10 K 0 K
External sensor calibration -10 K...10 K 0 K
Hysteresis 0.5...50 K 1 K
NZC, neutral zone 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-230D
Head Office Sweden
Phone: +46 31 720 02 00
Web: www.regin.se
Mail: info@regin.se
Sales Offices
France: +33 1 41 71 00 34
Germany: +49 30 77 99 40
Spain: +34 91 473 27 65
Hong Kong: +852 24 07 02 81
Singapore: +65 67 47 82 33
Wiring and dimensions
10 L 230 V AC Line Power supply
11 NC Not connected
12 N 230 V AC Neutral Power supply (internally connected to terminal 13)
13 N Fan-coil common / 230 V AC Neutral 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 NC Not connected
31 DO4 Digital output 4 for heating/cooling Digital output. 230 V AC, max. 300 mA. Max. 2 A during 20 ms.
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. Max. 2 A during 20 ms.
40 DI Digital input Potential-free window contact or occupancy contact. Configurable
for NO/NC.
41 0 V Analogue ground
42 AI Analogue input External PT1000 instead of the internal NTC
43 UI Universal input Change-over input. Potential-free switch (configurable for NO/NC)
or PT1000.
44 0 V Analogue ground
50-52 NC Not connected
53-54 NC Reserved for future use
*The sum of the current through DO1-DO3 is protected by a fuse
30
31
32
33
DO4
CDO45
DO5
L
N
Automatic change-over
cooling/heating
°C
°C
+
-
40
41
42
43
20
21
22
10
11
12
13
DI
AGnd
AI
UI
L
N
N
DO3
30
31
32
33
DO4
CDO45
DO5
44 AGnd
50
51
52
53
54
DO1
DO2
III
II
I
M
230 V AC
N
L
Product documentation
Document Type
RCF-230D_inst_en_sv Instruction for RCF-230D
The product documentation is available for download from Regin’s website, www.regin.se.
120 mm
29 mm
102 mm
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