Design and Technical Manual

6. SYSTEM DESIGN
Example 3 (OK)
z
Outdoor unit
Indoor unit 1
Branch box 1
(Primary type)
Branch box 2
(Secondary type)
Indoor unit 2
Indoor unit 3
Indoor unit 4
Indoor unit 5
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

≤

≤

38400 < 57000 < 62400 → OK
Indoor unit 1 ARU18 18000

57000
Indoor unit 2 ARU12 12000
Indoor unit 3 ARU9 9000
Indoor unit 4 ARU9 9000
Indoor unit 5 ARU9 9000
Branch box 1
UTP-PU03A
-
-
- -
-
Branch box 2
UTP-PU03B
-
-
- -
-
Example 4 (OK)
z
Branch box 1
(Primary type)
Branch box 2
(Secondary type)
Branch box 3
(Secondary type)
Outdoor unit
Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 6 Indoor unit 7 Indoor unit 8
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

≤

≤

38400 < 56000 < 62400 → OK
Indoor unit 1 ASU7 7000

56000
Indoor unit 2 ASU7 7000
Indoor unit 3 ASU7 7000
Indoor unit 4 ASU7 7000
Indoor unit 5 ASU7 7000
Indoor unit 6 ASU7 7000
Indoor unit 7 ASU7 7000
Indoor unit 8 ASU7 7000
Branch box 1
UTP-PU03A
-
-
- -
-
Branch box 2
UTP-PU03B
-
-
- -
-
Branch box 3
UTP-PU03B
-
-
- -
-
Capacity ratio
119%
Capacity ratio
117%
- (06 - 04) -
SYSTEM DESIGN SYSTEM DESIGN