Utopia Ivx Prime - Hitachi UTOPIA R32 Series Technical Catalogue

10 Electrical wiring
System Control - Main concept

10.6.2 UTOPIA IVX Prime

The UTOPIA IVX Prime system remains in Thermo-ON as long as there is a load demand for one indoor unit. If the
system is in Thermo-OFF, it will switch to Thermo-ON as soon as the first unit has load demand.
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Individual Operation (only available with UTOPIA IVX Prime)
In the individual operation control mode, each of the indoor units can have it's independent temperature setting and
Thermo-ON/OFF status (as well as optional functions), even connected to a same outdoor unit. Indoor units will switch
on whenever they have load demand in an autonomous way, independently of other indoor unit needs.
Outdoor
unit
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Individual Thermo-ON/OFF Operation (group control, only available with UTOPIA IVX Prime)
In the individual Thermo-ON/OFF control mode, also known as group control, all indoor units connected to the same
remote controller are sharing same operation mode (Tset, operation mode, fan speed, etc.). Even if sharing same
operating parameters, each of them will have its independent Thermo-ON/OFF status, so they will switch on whenever
they have load demand in an autonomous way, independently of other indoor unit needs.
Additionally can be set other parameters (optional functions like fan stop, etc) per each indoor unit.
Outdoor
unit
Remote control switch (PC-ARFP1E or later models)
114 TCGB0136 rev.1 - 05/2021
Tset1 Tset2
Tset1 Tset2
Remote control switch (PC-ARFP1E or later models)
Tset1 Tset1
Tset1
Control wiring
(H-LINK II)
Tset3 Tset4
Tset3 Tset4
Control wiring
(H-LINK II)
Tset1 Tset1
Operating cable for remote control
Transition wiring
The transition wiring is required
when operate multiple indoor units
by 1 remote control switch
Indoor unit
Indoor unit