Design and Technical Manual

6. SYSTEM DESIGN
Example 5 (Not good)
z
Outdoor unit
Indoor unit 1
Branch box 1
(Primary type)
Model
Capacity
(Btu/h)
Total
capacity
(Btu/h)
Connectable indoor
unit capacity (Btu/h) Judgement
Min. Max.
Outdoor unit AOU48 48000 48000

80%
38400

130%
62400
Not good → Because only one
indoor unit is connected
Indoor unit 1 ARU24 24000

24000
Branch box 1
UTP-PU03A
-
-
- -
-
Example 6 (Not good)
z
Branch box 1
(Primary type)
Outdoor unit
Indoor unit 1 Indoor unit 2
Model
Capacity
(Btu/h)
Total
capacity
(Btu/h)
Connectable indoor
unit capacity (Btu/h) Judgement
Min. Max.
Outdoor unit AOU48 48000 48000

80%
38400

130%
62400

<

36000 < 38400 → Not good
Indoor unit 1 ARU24 24000

36000
Indoor unit 2 ARU12 12000
Branch box 1
UTP-PU03A
-
-
- -
-
Capacity ratio
75%
- (06 - 05) -
SYSTEM DESIGN SYSTEM DESIGN