INSTRUCTION
RCF-230D
i
Consult documentation in all cases where this symbol
is used, in order to find out the nature of the potential
hazards and any actions to be taken.
Instruction for products with software version
1.4.
Read this instruction before installation and
wiring of the product.
1
RCF-230D
Room thermostat for controlling fan-coil units
RCF-230D is a room thermostat intended for controlling fan-coil heat-
ers/coolers with on/off, thermostat function. Installation is directly on
the wall or on an electrical connection box. The thermostat does not
have a communication connection. The fan can be set to one of three
speeds.
RCF-230D has change-over function and can be used for 2-pipe or
4-pipe systems.
Technical data
Supply voltage
230 V AC ±10 %, 50/60 Hz
Power consumption
< 3 W
Ambient temperature
0...50°C
Ambient humidity
Max 90 % RH
Storage temperature
-20...+70°C
Built-in temperature sensor NTC type, range 0...50°C
Inputs
Refer to connection illustrations and
table below
Outputs
Relays for fan control, 230 V AC, 3 A
DO4, DO5 for actuators, Triac, 230 V AC,
max. 300 mA (3 A initially)
Terminal blocks
Lift type (maximum cable area 2.1 mm
2
)
Protection class
IP20
Pollution degree
2
Overvoltage category
3
Material casing
Polycarbonate, PC
Dimensions
102 x 120 x 29 mm
Installation
Place the thermostat in a location that has a temperature representative
for the room. A suitable location is approx. 1.6 m above floor level in a
place with unobstructed air circulation.
Depress the locking tab in the upper edge of the thermostat with a
screwdriver
. Carefully turn the screwdriver until the bottom plate and the
electronics unit are slightly separated (see figure 1). Then use the cutout
that becomes visible in the edge of the bottom plate to open the upper
edge completely (see figure 2). Do the same thing in the lower edge of the
thermostat.
Figure 1
Figure 2
Lift the electronics unit up from the bottom plate. The bottom plate with
terminals has a number of hole combinations. Select suitable holes and
fasten the bottom plate on the wall or connection box, so that the arrows
on the bottom plate point upwards. Do not tighten the screws too hard!
Disconnection
RCF-230D should be connected to a switch or circuit breaker in the build
-
ing installation. This switch should be in close proximity to the thermostat
and within easy reach of the operator, and should be marked as the
disconnecting device for the equipment.
Always use the circuit breaker to disconnect the thermostat from the
mains supply during maintenance of the fan-coil and actuators.
Settings
Control modes
RCF-230D can control heating and cooling in sequence or be set to
seasonal switching between heating and cooling (change-over, see
below). Cascade control and min/max limitation of the supply air is
also possible.
Change-over function
RCF-230D has an input for change-over that automatically resets
the
output DO4 to operate with heating or cooling function. A sensor of
type PT1000 can be connected to the input and be mounted so that it
senses the temperature on the supply pipe to the coil.
When the temperature exceeds 28°C, the output function is set to
heating
and when the temperature drops below 16°C, the output is
set to cooling.
As an alternative, a potential-free contact can be used.
The input function can be set to NO/NC.
To ensure satisfactory functioning when using a sensor, the system
must have continuous primary circuit circulation. When the change-
over function is not used, the input must be left disconnected.
Operating mode
There are four different operating modes. Switching between these
modes is performed
locally.
Comfort:
is shown in the display. Heating and cooling have a
smaller
neutral zone. An occupancy detector can be connected to
the DI in order to select between Comfort and Economy. Switching
between Comfort/Economy and Off can also be done via the On/Off
button. Comfort/Economy is selected via the parameter list.
Economy (Standby):
“Standby” is shown in the display. The heat
-
ing and cooling setpoints are freely adjustable. Factory settings:
heating=15°C, cooling=30°C.
Off:
The thermostat does not heat or cool and the fan stops (unless
mould protection has been selected, in which case the fan will still
run).
Window:
is shown in the display, the thermostat is off and the fan
stops (unless mould protection has been selected, in which case the
fan will still run).The window contact is connected to the DI and must
be configured.
Occupancy detection/window contact
Parameter 3 determines if the DI is window contact input or
occupancy detection input. An occupancy detector can be connected
to the DI in order to switch between Comfort and Economy mode. A
window contact can also be connected to the UI1 input.
7367M
MA
Y 19
EN