20
Table 4 — Refrigerant Circuit Data
LEGEND
*Minimum operating charge based on 5° F (2.8° C) subcooling.
†Optimum operating charge based on 15° F (8.3° C) subcooling.
**Storage capacity calculated for 80% liquid and 20% vapor at 32.2 C (90 F).
UNIT 09DK 020, 024 028 034
COIL
No. of Ckts 2112112121121
Cap. (% Ckt) 50 67 33 50 60 40 40 20 50 60 40 40 20
REFRIGERANT
Min. Operating Chg/Ckt* kg 4.8 6.4 3.2 5.3 6.4 4.3 4.3 2.1 8.0 9.5 6.4 6.4 3.2
lb 10.6 14.1 7.1 11.8 14.1 9.4 9.4 4.7 17.5 21.0 14.0 14.0 7.0
Optimum Operating Chg/Ckt† kg 5.7 7.5 3.8 6.3 7.5 5.0 5.0 2.5 9.4 11.2 7.5 7.5 3.7
lb 12.5 16.6 8.3 13.8 16.6 11.1 11.1 5.5 20.6 24.8 16.5 16.5 8.3
Vol/C kt m
3
0.008 0.01 0.006 0.009 0.01 0.007 0.007 0.004 0.014 0.017 0.011 0.011 0.006
cu ft 0.30 0.40 0.20 0.33 0.40 0.26 0.26 0.14 0.49 0.59 0.39 0.39 0.20
STORAGE CAPACITY
(Per Ckt)**
R-12 kg 8.7 11.7 5.8 9.6 11.5 7.7 7.7 3.8 14.2 17.1 11.3 11.3 5.7
lb 19.2 25.7 12.7 21.1 25.3 16.9 16.9 8.4 31.3 37.6 25.0 25.0 12.5
R-22 kg 7.9 10.6 5.3 8.8 10.5 7.0 7.0 3.5 13.0 15.6 10.4 10.4 5.2
lb 17.5 23.3 11.7 19.3 23.2 15.4 15.4 7.7 28.7 34.4 23.0 23.0 11.5
R-500 kg 7.5 10.0 4.9 8.3 9.9 6.6 6.6 3.3 12.2 14.7 9.8 9.8 4.9
lb 16.5 22.1 10.9 18.2 21.8 14.5 14.5 7.3 26.9 32.3 21.5 21.5 10.8
R-502 kg 8.3 11.1 5.5 9.2 11.0 7.3 7.3 3.7 13.6 16.3 10.8 10.8 5.4
lb 18.3 24.5 12.1 20.2 24.2 16.1 16.1 8.1 29.9 35.9 23.9 23.9 12.0
UNIT 09DK 044
COIL
No. of Ckts 112111111111
Cap. (% Ckt) 40 34 13 74 26 66 34 60 40 53 47 100
REFRIGERANT
Min. Operating Chg/Ckt* kg 9.5 7.9 3.1 17.4 6.4 15.9 8.0 14.3 9.5 12.7 11.2 23.9
lb 21.0 17.4 6.8 38.4 14.2 35.1 17.5 31.6 21.0 27.9 24.7 52.6
Optimum Operating Chg/Ckt† kg 11.2 9.4 3.7 20.5 7.6 18.7 9.4 16.8 11.2 14.9 13.2 28.1
lb 24.8 20.6 8.3 45.2 16.7 41.3 20.6 37.1 24.8 32.8 29.1 61.9
Vol/C kt m
3
0.016 0.014 0.005 0.031 0.011 0.028 0.014 0.025 0.017 0.022 0.02 0.042
cu ft 0.60 0.52 0.19 1.09 0.40 1.0 0.49 0.89 0.60 0.79 0.70 1.49
STORAGE CAPACITY
(Per Ckt)**
R-12 kg 17.3 14.7 5.6 31.6 11.7 29.0 14.2 25.9 17.3 22.9 20.3 43.2
lb 38.1 32.4 12.4 69.6 25.7 64.0 31.3 57.2 38.1 50.5 44.8 95.3
R-22 kg 15.8 13.4 5.1 28.8 10.7 26.4 13.2 23.7 15.8 21.0 18.6 39.6
lb 34.8 29.6 11.3 63.6 23.5 58.1 29.0 52.3 34.8 46.2 40.9 87.1
R-500 kg 14.9 12.6 4.8 27.1 10.0 24.8 12.4 22.3 14.9 19.7 17.4 37.2
lb 32.8 27.8 10.6 59.8 22.1 54.6 27.3 49.1 32.8 43.4 38.4 81.9
R-502 kg 16.5 14.1 5.4 30.2 11.2 23.1 13.7 24.8 16.5 21.9 19.4 41.3
lb 36.4 31.0 11.8 66.5 24.6 51.0 30.1 54.7 36.4 48.3 42.8 91.1
Ckt — Circuit
Min. — Minimum
Vol — Volume
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