Engineering Manual

7
OCD699
3-1.4 Additional refrigerant charge (R410A: oz)
NOTE: Refrigerant piping exceeding 25 ft requires additional refrigerant charge according to the calculation.
Model
Outdoor unit
precharged
Refrigerant piping length (one way): ft
25 30 40 50 60 65
SUZ-KA09NA2
SUZ-KA09NAH2
2 lb 5 oz
0 1.08 3.24 5.40 7.56 8.64
SUZ-KA12NA2
SUZ-KA12NAH2
2 lb 9 oz
SUZ-KA15NA2
SUZ-KA15NAH2
Calculation: X oz = 1.08/5 oz/ft × (Refrigerant piping length (ft) - 25)
4
DATA
4-1. PERFORMANCE CURVE
COOLING
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
65 75 85 95 10 5 115
71
67
63
Indoor intake air DB
temperature (°F)
CAPACITY correction factors
OUTDOOR intake air WB temperature (°F)
Cooling capacity
0.6
0.7
0.8
0.9
1.0
1.1
1.2
65 75 85 95 105 115
71
67
63
temperature (°F)
Indoor intake air DB
Total input (Cooling)
INPUT correction factors
OUTDOOR intake air WB temperature (°F)
SUZ-KA09/12/15NA(H)2.MX
HEATING
SUZ-KA09/12/15/NAH2.MX
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
-5 5 15 25 35 45 55 65
77
68
59
temperature (°F)
Indoor intake air DB
Total input (Heating)
INPUT correction factors
OUTDOOR intake air WB temperature (°F)
SUZ-KA09/12/15/NA(H)2.MX
SUZ-KA09/12/15/NA2.MX
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
-
5 5 15 25 35 45 55 65
77
68
59
temperature (°F)
Indoor intake air DB
Total input (Heating)
INPUT correction factors
OUTDOOR intake air WB temperature (°F)
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
-5 5 15 25 35 45 55 65
59
68
77
Indoor intake air DB
temperature (°F)
CAPACITY correction factors
OUTDOOR intake air WB temperature (°F)
Heating capacity