Design and Technical Manual

2. MODEL SELECTION
CAPACITY CHANGE RATE BY BRANCH PIPING LENGTH
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Change rate in capacity
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Refrigerant piping connection diameter: Liquid ø1/4in. (6.35mm) , Gas ø3/8in. (9.52mm)
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Indoor unit model code: 7/9/12
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Branch piping
length
ft. 9.8 16.4 32.8 49.2
m 3 5 10 15
Change rate in
cooling capacity
% 100 98.3 94.2 90.0
Change rate in
heating capacity
% 100 98.9 96.2 93.5
Refrigerant piping connection diameter: Liquid ø1/4in. (6.35mm) , Gas ø1/2in. (12.70mm)
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Indoor unit model code: 15/18
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Branch piping
length
ft. 9.8 16.4 32.8 49.2
m 3 5 10 15
Change rate in
cooling capacity
% 100 99.2 97.1 95.0
Change rate in
heating capacity
% 100 99.5 98.3 97.0
Refrigerant piping connection diameter: Liquid ø1/4in. (6.35mm) , Gas ø5/8in. (15.88mm)
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Indoor unit model code: 24
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Branch piping
length
ft. 9.8 16.4 32.8 49.2
m 3 5 10 15
Change rate in
cooling capacity
% 100 99.6 98.5 97. 5
Change rate in
heating capacity
% 100 99.9 99.5 99.0
Change rate in capacity (%)
Branch piping length
Heating
Cooling
0
0
5
16.4
90
95
100
32.8 49.2
10 15 (m)
(ft.)
Change rate in capacity (%)
Branch piping length
Heating
Cooling
0
0
5
16.4
90
95
100
32.8 49.2
10 15 (m)
(ft.)
Change rate in capacity (%)
Branch piping length
Heating
Cooling
0
0
5
16.4
90
95
100
32.8 49.2
10 15 (m)
(ft.)
- (02 - 18) -
MODEL SELECTION MODEL SELECTION