@DNOVA THS_R410A-IOM-1304-E
15
Electrical connection
•
Open the frontal panel of the two units.
•
Turn THSI unit QS main switch OFF.
•
Switch OFF THSC unit Q01 automatic switch.
•
Insert the power supply cable using one of the special holes you can find on THSI unit sides and connect it to QS
main switch.
•
Following wiring diagram instructions make electrical connections between THSI and THSC units power supply
and power supply and auxiliary circuit cables.
•
Connect user interface to microprocessor J10 connector (you can find it in THS wiring diagram) using a telephone
cable.
•
Turn THSI unit QS main switch ON.
•
Turn THSC unit Q01 automatic switch ON.
•
Charge the circuit with R410A refrigerant.
•
Close the panels with the matching screws.
6.3
Start up
When you give power to microprocessor, you can see the first mask of main menu where you can see the following
information:
•
Indoor air temperature (
T
int
);
•
Supply air temperature (
T
sup
);
•
External air temperature (
T
ext
) (only Freecooling version);
•
Compressors and fans state;
•
Counter for evaporator fans and compressors.
In next mask (m_on_off), that you can see pushing
Down
, it is possibile to turn the unit
on
or
off
pushing
Enter
,
Down
and then again
Enter
. It is also shown if the unit is a master or a slave unit (this is a fundamental
information for LAN operations) and configuration of local net address (Unit 1, Unit 2 or Stand Alone).
main
m_on_off
Comp OFF
T
int
00.0 °C
UNIT ON:
Evap
OFF
T
sup
00.0 °C
No
Cond OFF
T
ext
00.0 °C
Master
Ev 00000
Comp 00000 h
STAND ALONE UNIT
In THSI unit there is a RED coloured LED to show that alarm is present
Usage
D Always consult the “USER MANUAL” and control system manual provided with the unit when undertaking
maintenance and/or advanced set-ups.
D
N.B.:
In THSI unit there is not condensing pressure gouge so the value is not reliable.
6.4
Starting operation
Before starting the unit, turn the main switch on, select the operating mode desired from the control panel and press the
”ON” button on the control panel.
If the unit fails to start-up, check if the service thermostat has been set according to the nominal values
provided.
You should not disconnect the unit from the power supply during periods when it is inoperative
but
only when it is to be taken out of service for a prolonged period (e.g. at the end of the season).
