30 | HIGH STATIC
MUL
TI V Ducted Indoor Unit Engineering Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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DUCTED HIGH STATIC
Refrigerant Flow Diagram
Figure 11: BH, M2, M3 Unit Refrigerant Flow Diagram.
BH, M2, M3 Units
Heat Exchanger
Sirocco Fan
TH3
TH1
TH2
lndoor unit
EEV
Heating
Cooling
Filter
Filter
Table 15: BH, M2, M3 Unit Refrigerant Pipe Connection Port Diameters.
Model
Liquid (inch)
Vapor (inch)
BH Units
ARNU073BHA4
1/4 Flare
1/2 Flare
ARNU093BHA4
ARNU123BHA4
ARNU153BHA4
ARNU183BHA4
ARNU243BHA4
3/8 Flare
5/8 Flare
M2 Units
ARNU073M2A4
1/4 Flare
1/2 Flare
ARNU093M2A4
1/4 Flare
1/2 Flare
ARNU123M2A4
1/4 Flare
1/2 Flare
ARNU153M2A4
1/4 Flare
1/2 Flare
ARNU183M2A4
1/4 Flare
1/2 Flare
ARNU243M2A4
3/8 Flare
5/8 Flare
ARNU283M2A4
3/8 Flare
5/8 Flare
ARNU363M2A4
3/8 Flare
5/8 Flare
ARNU423M2A4
3/8 Flare
5/8 Flare
M3 Units
ARNU283M3A4
3/8 Flare
5/8 Flare
ARNU363M3A4
ARNU423M3A4
ARNU483M3A4
ARNU543M3A4
Thermistor
Description
TH1
Return air thermistor
TH2
Pipe in thermistor
TH3
Pipe out thermistor
Table 16: BH, M2, M3 Frame Thermistors.