MAXA i-32V5C MIDI 0121 - System Operation and Configuration; System Resources and Dynamic Set-point Adjustment

11
Controllo per i-32V5 MIDI Air/water inverter chillers and heat pumps with axial fans
4. Power up the unit, seng the mains witch to the ON posion;
5. Access the rmware update menu and start the procedure through the following sequence: PRG -> PSS -> PRG -> (enter installer password)
-> PRG -> USB -> UPPA -> PRG
6. A countdown advances on the display, at the end of the procedure the word "boot" appears and the 4 LEDs light up in sequence;
7. Remove the drive from the USB port;
8. Switch the unit on by turning the main switch to the ON posion.
5. SYSTEM RESOURCES
The inputs and outputs (I/O) that can be set to acvate the control funcons are listed below. To congure the I/O, use the installer password to
access the conguraon parameters: PRG -> PSS -> PRG -> (enter installer password) -> PRG -> PAr -> PRG -> CnF.
Resource Parameter 


Default
value

ST6 H17
XC-5.1
XC-5.2
0 Not set
Analogue input congurable with an NTC-10kΏ
probe at 25°C β 3435
ST7 H18
XC-6.1
XC-6.2
0 Not set
Analogue input congurable with an NTC-10kΏ
probe at 25°C β 3435
ST11 H22
XC-10.1 (GND)
XC-10.2 (+)
XC-11.2 (5V)
0 Voltage input
0-10 Vdc input (XC-10.1/2)
Raometric / PWM input
DI2 H46
XC-4.1
XC-4.2
0
Remote summer/winter mode
change
Voltage free digital input.
To acvate the funcon see par.13.2
DI3 H47
XC-3.1
XC-3.2
2 Remote on/o
Voltage free digital input. Acve funcon by default
(par. 13.1).
DI9 H53
XC-7.1
XC-7.2
0 Not set Voltage free digital input
DO3 H81
XP-1.1 (N)
XP-1.2 (phase)
22
System integraon heater com-
mand
Voltage output 230Vac, 50Hz, 2A (AC1)
(see paragraph 18)
DO6 H84
XP-4.1 (N)
XP-4.2 (phase)
6 HDW valve control
Voltage output 230Vac, 50Hz, 2A (AC1)
(see paragraph 12)
DO7 H85
XP-5.1 (N)
XP-5.2 (phase)
25 Double setpoint valve control
Voltage output 230Vac, 50Hz, 2A (AC1)
(see paragraph 15)
Modbus
RTU RS485
--
XC-1.1 (GND)
XC-2.1 (R-)
XC-2.2 (R+)
-- -- Factory enabled with CM accessory
For a detailed descripon of the terminal block, please refer to the user/installer manual.
6. 
The regulaon control allows you to modify the set-point by adding an oset value depending on the outside air temperature. To use this func-
on, modify the values of the regulaon parameters, from b08 to b14, following the informaon in this paragraph.PRG -> PSS -> PRG -> (enter
installer password) -> PRG -> PAr -> PRG -> rE
Parameters of regulator:
• b08 = 1 to enable the dynamic set-point / b08 = 0 to disable the dynamic set-point (default)
• b09 = maximum cooling oset
• b10 = maximum heang oset
• b11 = Cooling outdoor temperature seng
• b12 = Heang outdoor temperature seng
• b13 = Cooling temperature delta
• b14 = Heang temperature delta
Edit the setpoint depending on the outdoor temperature:
HEATING COOLING
Set temp. ext
b12
b10
b14
Delta <0
Delta >0
Temp.
ext
Temp.
set
Offset >0
Hea
Set temp. ext
b12
b10
b14
Delta <0
Delta >0
Temp.
ext
Temp.
set
Offset >0
Hea