Fujitsu AOU48RLXFZ Design & Technical Manual page 176

EXAMPLE 3
Outdoor unit
Branch box
f
(24000Btu)
Indoor unit Indoor unit Indoor unit
System configuration
1
Model name ASU24 ASU18
Capacity (Btu) 24000 18000
Capacity ratio
(Total indoor unit capacity) / (Total outdoor unit capacity)
= (49000) / (48000) = 102.1% (Within 80% to 130%)
Selection of separation tube
Model
UTP-SX248A
Selection of branch box
Model
UTP-PU03A (primary)
UTP-PU03B (secondary)
Selection of pipe size
Liquid pipe size
in. (mm)
Gas pipe size
in. (mm)
Pipe length
ft (m)
Liquid pipe size
in. (mm) (6.35)
Gas pipe size 3/8
in. (mm) (9.52)
Pipe length
ft (m) (15)
c
g h
1 2 3
(18000Btu) (7000Btu)
(Indoor units)
2 3 4
ASU7
7000
Q'ty
None
Q'ty
1
None
a b c
3/8
(9.52)
5/8
(15.88)
148
(45)
h i j
1/4
49
- (06 - 22) -
5 6 7
d e f
1/4
(6.35) (6.35)
5/8
(15.88) (12.70)
39
(12)
k l m
Total Capacity
8
(Btu)
49000
g
1/4
1/2
39
(12)
6. SYSTEM DESIGN