Sanyo CHDZ09053 - Manual (Page 26)

2-16
Design of W-3WAY ECO-i SYSTEM Unit Specifi cations
1
2
3
4
5
6
7
8
Ele
vation diff
erence (ft)
Base capacity
change rate
*1
92 90 88 86 84 82 80 78 76
94
96
98
100
%
0 33 66 98 131 164 197 230 262 295 328 361 394 427 459 492 0 33 66 98 131 164 197 230 262 295 328 361 394 427 459 492
164
131
98
66
33
0
–33
–66
–98
–131
Equivalent length (ft)
*1 Sample calculations
(System: 20 HP, 164ft equivalent length, 49ft elevation
difference
The cooling capacity and heating capacity for this system are
found as shown below.)
● Cooling operation
From the table, the correction coefficient for that horsepower
level is found to be 1.00.
From the graph, the base capacity change rate is found to be
92.0%.
92.0%
× 1.00 = 92.0%
Capacity change rate is 92.0%. (56.0kW × 92.0% = 51.5kW)
92.0% = 175,800 BTU/h
Cooling capacity is
175,800 BTU/h (51.5 kW)
● Heating operation
From the table, the correction coefficient for that horsepower
level is found to be 1.00.
From the graph, the base capacity change rate is found to be
97.2%.
97.2%
× 1.00 = 97.2%
Because the calculation result exceeds 97.2%, the capacity
change rate is 97.2%.
(63.0kW × 97.2% = 61.2kW) Heating capacity is
209,000 BTU/h (61.2 kW)
Equivalent length (ft)
Base capacity
change rate
164
131
98
66
33
0
–33
–66
–98
–131
0 33 66 98 131 164 197 230 262 295 328 361 394 427 459 492
Ele
vation diff
erence (ft)
191,100 BTU/h ×
97.2% = 209,000 BTU/h 215,000 BTU/h ×
1-10. Capacity Correction Graph According to Tubing Length and Elevation Difference
Capacity change characteristics
The positive side for the elevation difference indicates that
the outdoor unit is installed at a higher position than the
indoor units. The negative side indicates the opposite.
NOTE
1. Model Selecting and Capacity Calculator
Rated performance values
Item Cooling Heating
Type
Cooling capacity
BTU/h(kW)
Power consumption
BTU/h(kW)
Heating capacity
BTU/h(kW)
Power consumption
BTU/h(kW)
90 95,500(28.0) 27,000(7.90) 107,500(31.5) 26,500(7.75)
140 153,600(45.0) 45,400(13.3) 170,600(50.0) 45,000(13.2)
Table of correction coeffi cients by horsepower (HP)
Equivalent
horsepower
60Hz
10 1.15
16 1.05
20 1.15
26 1.09
32 1.05
* The capacity change rate due
to the refrigerant tubing length
and elevation difference for
each horsepower level is found
from the correction coeffi cient
for that horsepower from this
table multiplied by the base
capacity change rate from the
graphs at left. However, even if
the calculated result exceeds
100%, the maximum capacity
change rate is 100%.