Example Of Piping Design - Fujitsu AOU48RLXFZ Design & Technical Manual

2-6.

EXAMPLE OF PIPING DESIGN

EXAMPLE 1
Outdoor unit
Separation
tube
Branch box
f
(7000Btu)
Indoor unit
System configuration
1
Model name ASU7 ASU7
Capacity (Btu) 7000 7000
Capacity ratio
(Total indoor unit capacity) / (Total outdoor unit capacity)
= (56000) / (48000) = 116.7% (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) (9.52)
Gas pipe size
in. (mm) (15.88)
Pipe length
ft (m)
Liquid pipe size
in. (mm) (6.35)
Gas pipe size
in. (mm) (9.52)
Pipe length
ft (m)
a b
Separation
d
tube
Branch box
g h
1 2 3
(7000Btu) (7000Btu)
Indoor unit Indoor unit
(Indoor units)
2 3 4
ASU7 ASU7
7000 7000
Q'ty
2
Q'ty
1
2
a b c
3/8 3/8 3/8
(9.52) (9.52)
5/8 5/8 5/8
(15.88) (15.88)
23 33 33
(7) (10) (10)
h i j
1/4 1/4 1/4
(6.35) (6.35)
3/8 3/8 3/8
(9.52) (9.52)
16 16 16
(5) (5) (5)
- (06 - 18) -
e
i j k
4 5 6
(7000Btu) (7000Btu) (7000Btu)
Indoor unit Indoor unit Indoor unit
5 6 7
ASU7 ASU7 ASU7
7000 7000 7000
d e f
3/8 3/8 1/4
(9.52) (9.52) (6.35)
5/8 5/8 3/8
(15.88) (15.88) (9.52)
16 16 16
(5) (5) (5)
k l m
1/4 1/4 1/4
(6.35) (6.35) (6.35)
3/8 3/8 3/8
(9.52) (9.52) (9.52)
16 16 26
(5) (5) (8)
c
Branch box
l m
7 8
(7000Btu) (7000Btu)
Indoor unit Indoor unit
Total Capacity
8
(Btu)
ASU7
56000
7000
g
1/4
(6.35)
3/8
(9.52)
16
(5)
6. SYSTEM DESIGN