Design Technical Manual

Table Of Contents
6. CAPACITY COMPENSATION COEFFICIENT
COMPENSATION COEFFICIENT OF PIPE LENGTH
The gures give the compensation coefcient of pipe length owing to installation position (pipe
length, height difference). Pipe length and height difference are the length and the height
difference between the master outdoor unit and indoor unit.
z
Cooling
z
Heating
COMPENSATION COEFFICIENT OF FROSTING / DEFROSTING
(HEATING OPER ATION)
To take the effects of accumulated frost and defrosting operation on heating capacity into
consideration, the capacity of outdoor units should be corrected by compensation coefcient
shown in the table below.
Outdoor temperature
°FDB /
°FWB
-2.7 / -4 5 / 3 16 / 14 19 / 18 32 / 30 36 / 34 41 / 39 45 / 43
°CDB /
°CWB
-19.3 / -20 -15 / -16 -9 / -10 -7 / -8 0 / -1 2 / 1 5 / 4 7 / 6
Compensation coefcient 0.96 0.95 0.94 0.93 0.88 0.90 0.97 1.00
1.00
0.98
0.96
0.94
0.92
0.90
0.88
0.86
0.84
0.82
0.80
0.78
(- 40)
(- 30)
(- 20)
(- 10)
0
(10)
(20)
(30)
(40)
(50)
-131
- 98
- 66
- 33
33
66
98
131
164
0 33
(10)
66
(20)
98
(30)
131
(40)
164
(50)
197
(60)
230
(70)
262
(80)
295
(90)
328
(100)
361
(110)
394
(120)
427
(130)
459
(140)
492
(150)
524
(160)
541
(16
5)
Pipe length
L [ft. (m)]
Height difference H [ft. (m)]
Outdoor unit
(Higher)
Outdoor unit
(Lower)
1.00
0.98
0.96
0.94
0.92
0.90
0.88
0.86
0.84
0.82
0.80
0
(- 40)
(- 30)
(- 20)
(- 10)
0
(10)
(20)
(30)
(40)
(50)
-131
- 98
- 66
- 33
33
66
98
131
164
33
(10)
66
(20)
98
(30)
131
(40)
164
(50)
197
(60)
230
(70)
262
(80)
295
(90)
328
(100)
361
(110)
394
(120)
427
(130)
459
(140)
492
(150)
524
(160)
541
(165)
Height difference H [ft. (m)]
Outdoor unit
(Higher)
Outdoor unit
(Lower)
Pipe length
L [ft. (m)]
- (02 - 33) -
MODEL
SELECTION
MODEL
SELECTION