3
A
iQ-T
Digital Thermostat with Remote Sensor & Auto Adapt-PID
5°C-90°C
Installer’s and User’s Manual
Important Safety Information
Read carefully the information included in this manual.
Always switch off the main power when installing the thermostat.
The installation should be carried out by authorized personnel.
Do not use the thermostat for other applications except those that is made to be used
i.e. hot water preparation
This thermostat is not an instrument. It must not be used in life critical applications.
Installation
Install the thermostat always in an inside moisture free wall.
Start from removing the thermostat base. Drill appropriate holes on the wall, then place,
align and screw them.
Continue with the electrical connections.
Wiring
Remove the terminal blocks found on the rear window of the thermostat. Consult the
electrical wiring figure on the back of the device or the next picture and make all the
necessary wirings according to the application.
As it happens on every electrical device this thermostat requires power to operate. Connect
the phase “L” (1), the neutral “N” (2) of the 230VAC/50Hz electrical net. Terminal (3) is the
commissioning output for heating or cooling system.
On the 2-pole terminal block a sensor of RS301k5 or RS1501k5 or XRS0101k5 type must be
connected without polarity. Sensor’s cable can be lengthen up to 50m by a separate 2 wire
cable with minimum cross section 0.5mm2.
Connection of any wire that carries potential of any type is prohibited for sensor’s
terminal block.
Once electrical connections are complete plug in the terminal blocks on the back of the
device and reinsert the front part on the thermostat base starting from the upper side.
Figure 3 Electrical connections
Operation
There are three buttons, three luminous indicators and one matrix led display on the front
of the device.
In the following figure the meaning and numbering of all this items is shown.
(1)
On-Of button
(2)
Installer’s menu button
(3)
Decrease button
(4)
Increase button
(5)
Operation status indicator (On)
(6)
Commissioning output enable indicator
(7)
Cooling mode indicator
(8)
LED display
Temperature is shown on the display in Celsius degrees.
On-Off, Delayed shut off
When button (1) is momentarily pressed thermostat switches between On and Off states
while showing the respective messages. In On state the (5) indicator is on and
temperature control is performed. In Off state no temperature control is performed.
From time to time a “ZZZ” message is passing through the display indicating the sleeping
state of the device.
When (1) button is contiguously pressed in On state the delayed shut off time is shown in
predefined time steps 30min, 1h, 2h … 6h. Once the time of your choice is shown release
button (1). Then thermostat will initiate the countdown until shut off delay will pass and
switch to the Off state. During that process the (5) indicator is flashing.
Setpoint adjust
Once the increase (4) or decrease (3) button is pressed SET message is shown and after
that the current setpoint. You can alter the setpoint by using the same keys. Few seconds
after stop pressing any button thermostat memorizes the new setting and returns to the
normal operation.
Invoke Installer’s Menu
Press contiguously (2) button to enter the installer’s menu where useful parameters for
the operation can be found. The meaning of those parameters are explained below.
Sensor malfunction detection
This thermostat always performs sensor health test against short circuit, open circuit or
other malfunctions that can be detected. When such fault occur thermostat shows the
message “Err” and interrupts its operation.
Installer’s Menu
Installer’s menu can be invoked by the contiguous press of button (2). Critical operation
parameters can be adjusted inside that menu. Alteration of those parameters is only
advised for expert technicians.
When entered on the installer’s menu the name (mnemonic) of the first parameter (P-n) is
shown.
Use the (3) and (4) keys to navigate to the parameter of your desire. Then press key (1) and
the respective value is shown. Use the (3) or (4) keys to alter the value of the parameter.
Value is automatically sored after a while when pressing no key or by pressing the (1) key.
To exit inataller’s menu navigate to the End parameter mnemonic and press (1) key or leave
the device without pressing any key for some time.
Parameter
Minimum
Maximum
Preset
P-n
000
(heating
mode)
001
(cooling mode)
000
(heating mode)
Mod
000 (On-Off)
001 (Auto Adapt PID)
000 (On-Off)
TRI
Measu/- 5°C
dT
0.1°C
10°C
3°C
SHi
SLo
90°C
90°C
SLo
5°C
SHi
5°C
Pbn
1°C
5°C
2°C
HCT
1min
20min
10min
STP
1
20
10
RST
Restore preset values
End
Exit from installer’s menu
P-n
Defines if the device will perform as cooling (001) or heating (000) thermostat.
In heating mode heating system is commissioned when temperature is below the
setpoint (figure 2).
Figure 4- Heating mode
In cooling mode the cooling system is commissioned when temperature is over the
setpoint (figure 3).
(8)
(4)
(3)
(2)
(1)
(7)
(6)
(5)
