Fujitsu AIRSTAGE J-IIIL Design & Technical Manual page 553

¢ Example 2
• System configuration
Indoor unit
1
2
3
Outdoor unit
1
• Capacity ratio
(Total capacity of indoor unit)/(Total capacity of outdoor unit)
= 78.0 / 96.0 = 81.25% (Within 50% to 150%)
• Selection of Separation tube and Header
Branch kit no.
HD1
• Selection of pipe size
Pipe no.
a
b1
b2
b3
*: When the length of the pipe between outdoor unit and the first separation tube or header is
greater than 229 ft (70 m), liquid pipe must be size up from 3/8 in (9.52 mm) to 1/2 in (12.70 mm).
For details, refer to
2-6. Piping design example
Total cooling capacity of indoor units connected
downwards to the pipe
78 kBtu/h
1
18 kBtu/h
Indoor
unit
AUUB18TLAV2
AUUB30TLAV2
AUUB30TLAV2
Total capacity
AOU96RLAVL
Total capacity
Pipe diameter: in (mm)
Liquid pipe
Ø1/2 (12.70)
Ø1/4 (6.35)
Ø3/8 (9.52)
Ø3/8 (9.52)
"Pipe size selection" on page 06-22.
- (06-31) -
Outdoor
unit
a
HD1
b3
b1 b2
18 kBtu/h 30 kBtu/h
2 3
30 kBtu/h 30 kBtu/h
Indoor Indoor
unit unit
Model name
Model name
Model name
UTR-H0906L
Gas pipe
Ø7/8 (22.22)
Ø1/2 (12.70)
Ø5/8 (15.88)
Ø5/8 (15.88)
30 kBtu/h
Capacity (kBtu/h)
18.0
30.0
30.0
78.0
Capacity (kBtu/h)
96.0
96.0
Quantity
1
Length example
ft (m)
232 (71)*
19 (6)
19 (6)
22 (7)
2. Piping design