RCF-230AD
RCF-230AD
Room controller for fan-coil applications with
two analogue 0...10 V DC outputs
• Supply voltage 230 V AC
• Two analogue 0...10 V DC outputs
• Built-in relays for a 3-speed fan, 230 V AC
RCF-230AD is a room controller 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-230AD is a controller for controlling heating and/or
cooling in a room. It is intended for control of actuators
with 0...10 V DC analogue control signal, and also has a
function for three-speed fan control (for fan-coil).
The controller has supply voltage 230 V AC. It has
built-in 230 V AC fan relays, which means that a separate
relay module is not required for the fan and actuators.
Applications
The controller 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 controller 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 controller 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 controller controls heating and/or cooling in a room.
Control parameters like P-band and I-time can be set in
the parameter list via the display. 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 controller has a built-in sensor. Alternatively, the
input for an external PT1000-sensor can be used.
Output function for actuators with 0...10 V control
The controller has 0...10 V DC outputs. Since it is
powered by 230 V AC, the analogue signal neutral on
the controller must, in addition to the control signal's
plus signal, be connected to the actuator in order for the
control signal voltage to be transferred.
The output signal for the two outputs can be set
individually to 0...10 V, 2...10 V, 10...0 V and 10...2 V.
The factory setting is 0...10 V for both outputs.
revision
03 2012
2
RCF-230AD
2- and 4-pipe installations
In 2-pipe installations, the same pipe system is used for
heating and cooling. Chilled water is distributed in the
system during summer and heated water during winter
When RCF-230AD is configured for a 2-pipe system,
output AO1 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 pipe
systems for heating and cooling with separate valves. The
controller uses two outputs for control of heating and
cooling in sequence.
Automatic change-over cooling/heating (so-called
change-over function)
RCF-230AD has an input for change-over which is used
when the controller is configured for 2-pipe installations.
It sets output AO1 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 mode
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 controller 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 controller 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. Off
mode is selected by pressing the On/Off button.
Window: is shown in the display. The controller is in
Off mode but the display is lit. Mould protection is active
if it has been configured.
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 heating and/or cooling demand,
depending on the configuration.
The fan speed is set to LowàMediumàHighàAuto by
pressing the fan button.
The factory setting in the Auto position is that the fan
speed is controlled at both heating and cooling demand.
The first step starts when the output signal from the
controller internally exceeds
20 %. The second step starts at 60 % and the third at
100 %. When the fan speed decreases, each fan step has
a hysteresis of 5 % for changing over to the next step. For
example, the fan will change from the third to the second
step when the output signal falls below 95 %.
The values of the fan start points, the hysteresis and the
choice of control based on the heating and/or cooling
demand can be changed in the parameter list via the
display. The number of fan steps can also be changed if
the fan has less than three steps.
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.
WINTER SUMMER
3
RCF-230AD
Mould protection
When this function has been configured, the fan will
continually run (at its lowest speed, if not set otherwise)
and circulate air in the room so as to minimise the risk
of mould growth in the fan-coil unit. The function is
deactivated on delivery.
Automatic exercise of valves
The controller 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)
The display is handled using the buttons on the
controller:
On/Off button
INCREASE temperature setpoint
DECREASE temperature setpoint
Fan speed
On/Off button
By pressing the On/Off button, RCF-230AD 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
The factory settings are changed in the parameter list
shown in the display using the buttons on the controller.
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-230AD.
Control principles
Control principle at cooling function, 2-pipe
installations
When the controller is set to cooling, the output starts to
increase when the temperature rises above the setpoint
value.
Control principle at heating function, 2-pipe
installations
When the controller is set to heating, the output starts to
increase when the temperature falls below the setpoint
value.
4
RCF-230AD
Control principle at 4-pipe installations
At Comfort mode, neither heating nor cooling is used
when the temperature is in the neutral zone, in order to
minimise the energy consumption. The heating output is
activated when the temperature falls below the set value
for the neutral zone. The cooling output is activated when
the temperature exceeds the set value for the neutral
zone. The neutral zone is divided into two equal parts
with one part below and one part above the setpoint. See
the figure below. The factory setting for NZC is 2 K.
The above schematic drawings of the control principle
show the corresponding requirement of the controller
function. This requirement is recalculated by the
controller to a value for the actuator output, depending
on the selected output function.
5
RCF-230AD
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 mm2
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)
Output AO1, AO2 0...10 V DC, max. 1 mA, short-circuit proof, reversable to 2...10 V, 10...0 V, 10...2 V
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..0.50 K 1 K
P-band 1...300°C 10°C
I-time 0...1000 s 300 s
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
Valve exercise Individually settable for heating and cooling outputs 23 hours interval
6
RCF-230AD
Wiring
10 L 230 V AC Line Supply voltage
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
30-33 NC Not connected
40 DI Digital input Floating (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 0 V Analogue ground
51 AO1 Analogue output 1
52 AO2 Analogue output 2
53-54 NC Reserved for future use
*The sum of the current through DO1-DO3 is protected by a fuse
50
51
52
53
AO1
AGnd
AO2
Automatic change-over
cooling/heating
54
230 V AC
L
N
Y
T
0...10 V
-
+
°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
44 AGnd
50
51
52
53
54
DO1
DO2
III
II
I
M
230 V AC
N
L
AGnd
AO1
AO2
230 V AC
L
N
Y
T
0...10 V
230 V AC
L
N
Y
T
0...10 V
-
-
+
+
RCF-230AD
Head Office Sweden
Phone: +46 31 720 02 00
Web: www.regin.se
Mail: info@regin.se
120 mm
29 mm
102 mm
Product documentation
Document Type
Instruction RCF-230AD Instruction for RCF-230AD
The product documentation is available for download from Regin's website, www.regin.se.
Dimensions
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