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Table 3. Other DIP-switches
ON
OFF
SW3
Stand-by
Occupied (FS)
SW4
DI, window contact.
CI, Regin's con-
Closed contact
densation detector,
indicates closed
KG-A (FS)
window.
SW5
Digital output for
Analogue output
24 V AC thermal
for 0...10 V DC
actuator.
valve actuator
(FS).
SW6
Digital output for
Analogue output
24 V AC thermal
for 0...10 V DC
actuator.
valve actuator
(FS).
SW7
External sensor,
Internal sensor,
Pt1000
NTC (FS)
SW8
Choice of actuator
Choice of actuator
NO
NC (FS)
Choosing NC (factory setting) gives direct action on output
UO1, i.e. increasing signal (longer pulses) on increasing
control output.
This setting is used when UO1 is connected to a thermal ac-
tuator of type Regin RTAM-24 (NC). In the event of a power
cut the valve will close.
Choosing NO gives reverse action on output UO1, i.e. de-
creasing signal (shorter pulses) on increasing control output.
This setting is used when UO1 is connected to a thermal
actuator of type Regin RTAOM-24 (NO). In the event of a
power cut the valve will open.
Settings
Control state
RC-FO has control state: Heating and cooling in sequence. The
change-over function can be activated, see below.
Change-over function
RC-FO has an input for change-over that automatically resets the out-
put UO1 to operate with heating or cooling function. The input can be
connected to sensors of type PT1000 and have the sensor mounted
so that it senses the temperature on the supply pipe to the coil.
When the temperature exceeds 22°C, the output function is set to
heating and when the temperature drops below 18°C, the output is
set to cooling.
As an alternative, a potential-free contact can be used. When the
contact is open the controller works with the heating function and when it
is closed, with the cooling function.
Comment
To ensure satisfactory functioning using sensor, the system must have
Preset operating
continuous primary circuit circulation. When the change-over function is
not used, the input must be left disconnected.
mode
Function terminal
Operating mode
33, DI2/CI
There are four different operating modes. Switching between these modes
is performed locally.
Stand-by: Both heating and cooling are disconnected within a tempera-
ture interval around the applicable setpoint (heating setpoint value - 3°C,
Function terminal
cooling setpoint + 3°C).
23, UO1.
Occupied: The room temperature is controlled according to the appli-
cable cooling setpoint (24°C) or heating setpoint (22°C).
Bypass: Is controlled by the occupancy detector or other digital contact
Function terminal
connected to the controller, closing activates Bypass. Control of the room
temperature in the same way as Occupied mode. Bypass also controls
24, UO2.
forced ventilation. Reset to Preset operating mode occurs after 10 minutes
of non-occupancy (no signal from presence detector).
Unoccupied: Both heating and cooling are disconnected within a tem-
Temperature
perature interval with min/max limits (min 15°C, max 30°C). This mode is
sensor
activated when the Occupancy button is held depressed for more than 5
Function terminal
seconds.
23, UO1
Preset operating mode
Occupied is the preset operating mode. It can be set to Stand-by with
DIP-switch SW3. See table 3 above.
Occupancy detector
An occupancy detector is connected for local control of the operating
mode between Preset operating mode and Bypass.
The Occupancy button
The Occupancy button on the front of the controller switches between
operating modes Bypass and Preset operating mode. A timer is activated
in Bypass mode, and after 2 hours it returns to Preset operating mode.
Open window
Heating and cooling are disconnected.
Setpoint
Local setpoint displacement (+/-3°C) set with the knob on the front of the
controller.
In Occupied mode, the controller operates from a heating setpoint (22°C),
or a cooling setpoint (24°C) that can be changed locally using the DIP
switches and local setpoint displacement.
Switching between heating and cooling setpoints is done automatically
in the controller depending on the heating and cooling requirement. The
controller's control setpoint is the same as the current setpoint plus/minus
the local setpoint displacement.
RC-FO
Fan control
RC-FO has a fan switch with the following positions:
AUTO
Automatic control of the fan speed to maintain
desired room temperature.
0
Fan off.
I
Manual position with low speed.
II
Manual position with medium speed.
III
Manual position with high speed.
Frost protection
Independent of the operating mode and set fan speed, the heating
control is forced on when the room temperature drops below 8°C.
Return to normal speed and control occurs automatically when the
room temperature exceeds 8°C.
Condensation detector
If there is condensation, the cooling control is blocked. Return to nor-
mal control occurs automatically when condensation ceases.
Choice of actuator
The output function can be set to NO or NC for thermal actuators
via DIP-switch SW8. The function only applies to UO1.
Indications
RC-FO has an LED shaped like a thermometer on the front. A red
indication is shown when heating control is functional and a blue
indication when cooling control is active. No LED indication shows
that neither heating nor cooling control is active. A flashing red/blue
indication shows that a setting is incorrect.
EMC emission and immunity standard
The product fulfills the demands for the current European EMC-stan-
dard CENELEC EN61000-6-1 and EN61000-6-3, and is CE-marked.
LVD, Low Voltage Directive
The product fulfills the demands for the current European LVD-stan-
dard IEC 60 730-1.
Contact
AB Regin, Box 116, 428 22 Kållered, Sweden
Tel: +46 31 720 02 00, Fax: +46 31 720 02 50
www.regin.se, info@regin.se
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