MAIN FEATURES
•
Indication of the quality of radio communication for each
channel
•
Global standby and Heating/Cooling changeover inputs
•
Auxiliary output for pump or boiler
•
Regulation with temperature reduction (economy mode)
•
Control of NC and NO actuators
•
230V~ power supply with option of powering actuators
at a different voltage
TECHNICAL DATA
Power supply:
230V~ -15% +10% 50Hz
Input power:
7 VA
Contact rating:
Actuator outputs: 8 x 3A@250V~,
voltage contacts
Max total 8A
Auxiliary output: 3A@250V~, voltage free
Device protection fuse:
Thermal auto-reset.
Load protection fuse:
4A slow blow
Economy reduction range: 0.0°C .. 7.0°C
Auxiliary output delay:
0 .. 7 min
Antifreeze temperature: 6.0°C
Regulation hysteresis:
0,3°C
Protection rating:
IP 30
Operating temp.:
0°C .. 40°C
Storage temp.:
-10°C .. +50°C
Humidity limits:
20% .. 80% RH
(non-condensing)
Enclosure:
Material:
ABS V0 self-extinguishing
Colour:
Signal White (RAL 9003)
Dimensions: 245 x 100 x 60 mm (W x H x D)
Weight:
~ 870 gr.
EMC - LVD reference standards:
OVERVIEW
This device is a relay module designed to drive loads (more
precisely, electro-thermal valves or circulators) via radio in
home or office heating/cooling systems.
It features 8 independent channels, each of which can be
associated with an independent transmitter (radio thermostat
or chronostat).
This system is undoubtedly the best solution for all buildings
in which wires cannot be laid between thermostats and the
heating/air conditioning equipment room.
OPERATION
Each thermostat or chronostat transmitter emits "radio
commands" toward the active antenna according to the
heating and cooling requirements of the room where the
thermostat is located in and according to the programmed
setpoint.
These commands are then received by the active antenna,
installed in a suitable position in the room where the boiler or
air conditioning equipment is installed.
The active antenna then transmits digital data to the relay
module via a data cable so that only the relay associated with
the transmitter concerned will switch on or off according to
need.
Each relay output can be connected to a valve that will
control the flow of hot/cold water in the heating/cooling
unit present in the room. In addition to the channel outputs,
the device features an "auxiliary" output, which is activated
each time at least one of the actuator outputs (channels
1..8: see also "Pump Operation") is switched on.
While it is operating, the relay module continuously monitors
the status of each channel in order to detect any transmitter
malfunctions.
MECHANICAL DESCRIPTION
On the front panel of the device, shown in Fig. 1, there are
ten LEDs:
Power LED "
The green "power" LED, marked with the "
be steadily lit or blinking:
Green LED steadily lit: the device is powered.
Green LED blinking: there is a problem in communication with
the active antenna or with other modules connected in the
chain (for example, there may be a problem with the data
cable connection)
Actuator output "1 .. 8" status LEDs (
There are 8 status LEDs, each of which corresponds to a
channel, and they may light up green, yellow or red.
Each LED provides information about the output and the
radio thermostat controlling it.
In general, the following rule should be borne in mind:
- When a LED is lit, irrespective of colour, it means that the
corresponding actuator output is ON.
- When a LED is either off or only faintly lit, it means that
the corresponding actuator output is OFF.
- The colour of the LED provides information about the quality
of radio communication. See paragraph on "Checking the
signal strength".
- A continuously blinking LED indicates the presence of a
fault in the system which requires the user's intervention.
In this case the colour of the LED has the following
EN-60730-1 (2002)
meanings:
Green: Error in the temperature probe of the thermostat
Yellow: Thermostat transmitter battery low.
Red:
When a channel is in a fault status and the corresponding
LED is blinking, it may blink in two different ways depending
on the output relay status.
If the output is deactivated the LED will normally remain off
but then emits a brief flash, whereas if the output is active,
the LED will normally remain lit and then go off briefly.
Auxiliary output on/off LED "
The yellow LED, marked by the "
status of the auxiliary output relay.
- LED on:
connected to the relay module is switched on).
- LED off: auxiliary output OFF.
Fig. 2 shows the internal layout of components.
Before opening the enclosure, it is absolutely necessary to
make sure that the device is disconnected from the 230V~
mains power supply.
Jumpers JP1 and JP2 Figure 2
If an auxiliary power source is used for the loads, it is
necessary to remove the jumpers JP1 and JP2 indicated
L
by
12
" (
2
in Figure 1)
transmitter.
Absence of radio communication.
" (
" symbol, indicates the
auxiliary output ON (the pump or boiler
M
and
in Figure 2.
" symbol, can
3
in Figure 1)
4
in Figure 1)