MAXA i-32V5C MIDI 0121 - Memorising the Probe in Heating Mode; Heating Mode on Dhw Storage Tank; Remote Function; On;Off

Controllo per i-32V5 MIDI Air/water inverter chillers and heat pumps with axial fans
16
Parameter VALUE 
H10
0 (default) Funcon disabled
1
Funcon acve in heang and cooling mode.
The remote on/o funcon does not disable DHW producon.
2
Funcon acve in heang and cooling mode.
The remote on/o funcon disables DHW producon.
3
Funcon acve only in heang mode
The remote on/o funcon disable DHW producon.
4
Funcon acve only in heang mode
The remote on/o funcon disable DHW producon
5
Funcon acve only in cooling mode
The remote on/o funcon not disable DHW producon
6
Funcon acve only in cooling mode
The remote on/o not disable DHW producon
If the DHW temperature is lower than the DHW set (set to 48°C by default), the machine acvates the DHW valve and the compressor is set to
the maximum frequency, starng the modulaon one degree before the set and switching o one degree aer the set. Once the set point has
been reached, the valve returns to rest mode and the compressor starts to regulate normally. Switching from winter operaon to domesc hot
water operaon, the compressor does not switch o, while switching from summer operaon to domesc hot water operaon the compressor
is switched o to wait for the safety me.
If H10 = 1/2/3, switching the unit o remotely (remote on/o, see paragraph 13.1) does not aect the DHW operaon
If H10 = 2/4/6, the remote on/o funcon disables domesc hot water producon and operaon of the unit in heang or cooling mode.

MEMORISING THE PROBE IN HEATING MODE
When switching from the system to DHW, the reference probe changes from "water outlet probe" to "DHW probe". The display on the machine
shows the temperature read by the probe located inside the DHW tank; once the DHW cycle is over, the display returns to show the water outlet
temperature. In heang mode, before entering DHW mode, the last value read by the ow probe of the heat pump is memorised. Once the DHW
temperature control is sased, the reference temperature on the system side returns to the previously memorised one.
La funzione di memoria si interrompe:
• when the temperature read by the probe becomes lower than the stored value;
• or a me equal to b06 seconds has elapsed (default b06 = 45).
HEATING MODE ON DHW STORAGE TANK
If parameter H130 = 1, the machine also uses the DHW storage tank for heang on the system side. Under these condions, the DHW valve
output is also acve during hot operaon. The valve is deacvated during defrosng and in cold mode. In this mode (H130 = 1) it is possible to
make the domesc hot water integraon resistor also act as integraon resistor on the system side.le to make the DHW integraon resistor also
act as an integraon resistor on the plant side.
13. REMOTE FUNCTION
The terminal block has digital inputs to control the unit via an external consent (see chapter "5. SYSTEM RESOURCES").
ON/OFF
The funcon is enabled by default on digital input DI3 (parameter H47 = 2), to acvate it, the electrical bridge must be removed from the terminal
block. With the contact open, the unit will be in stand-by mode, in this state the message E00 will appear on the display on the machine. When
the contact is closed, the machine comes out of stand-by and the circulator is acvated for 2 minutes.
The funcon is disabled by reinserng the electrical bridge or seng parameter H47 = 0.

SUMMER/WINTER MODE CHANGE
The control oers the possibility to remotely manage the operang mode of the machine in heang or cooling mode.
The funcon can be set on digital input is seable DI2 via parameter H46:
Parameter VALUE 
H46
0 (default) Funcon disabled
3
Open contact -> cooling mode
Clesd contact -> heang mode
The polarity of the digital input DI2 can be reversed by seng H75 = 2.