Carrier 30RBM 160 Installation, Operation And Maintenance Instructions page 59

12.2.8 - DX Free Cooling option (Options 118A and 118B)
The DX Free Cooling option is used to produce chilled water when the ambient air temperature is lower than the temperature
of the water to be cooled, without activating the compressors [the compressors can be used for a few seconds during a Free
Cooling cycle to transfer the refrigerant charge to the Free Cooling circuit – see Operation].
Only the unit fans and a low power pump that circulates the refrigerant in the Free Cooling circuit operate to generate cooling
power.
This ensures particularly high efficiency during operation in Free Cooling mode.
Option 118A (Free Cooling on both circuits) is available for units from size 220.
Option 118B (Free Cooling on one circuit) is available across the entire range.
12.2.8.1 - Physical properties of units with the Free Cooling option
30RBM/30RBP option 118A (Free Cooling on 2 circuits)
30RBM - Operating weight
(1)
Standard unit + option 118A
Unit with option 15 + option 118A
Unit with option 15 + option 116S + 118A
30RBP - Operating weight
(1)
Standard unit + option 118A
Unit with option 15 + option 118A
Unit with option 15 + option 116S + 118A
30RBM/30RBP - Refrigerant
Circuit A
(1)
Circuit B
(1)
30RBM/30RBP option 118B (Free Cooling on 1 circuit)
30RBM - Operating weight
(1)
Standard unit + option 118B
Unit with option 15 + 118B
Unit with option 15 + option 116S + 118B
30RBP - Operating weight
(1)
Standard unit + option 118B
Unit with option 15 + 118B
Unit with option 15 + option 116S + 118B
30RBM/30RBP - Refrigerant
Circuit A
(1)
Circuit B
(1)
(1) Weights are guidelines only. Refer to the unit name plate.
160 180 200 220
kg - - - 1462
kg - - - 1570
kg - - - 1709
kg - - - 1498
kg - - - 1606
kg - - - 1745
R410A
kg - - - 13,9
tCO e - - - 29,0
2
kg - - - 14,0
tCO e - - - 29,2
2
kg 1260 1301 1301 1431
kg 1343 1383 1384 1539
kg 1482 1523 1523 1678
kg 1296 1337 1337 1467
kg 1378 1420 1420 1575
kg 1517 1559 1560 1714
R410A
kg 8,4 10,9 10,9 12,6
tCO e 17,5 22,8 22,8 26,3
2
kg 14,0 14,1 13,7 14,0
tCO e 29,1 29,4 28,6 29,2
2
260 300 330 360
1483 1958 1994 2170
1591 2084 2120 2313
1745 2244 2324 2517
1520 1994 2030 2206
1628 2120 2156 2350
1782 2280 2360 2553
14,6 16,7 17,6 24,8
30,5 34,9 36,7 51,8
14,6 25,0 24,7 25,4
30,5 52,2 51,6 53,0
1472 1929 1965 2133
1580 2055 2091 2276
1734 2215 2295 2480
1489 1965 2001 2169
1597 2091 2127 2313
1751 2251 2331 2516
13,1 14,7 15,4 20,3
27,4 30,7 32,2 42,4
14,6 25,0 24,7 25,4
30,5 52,2 51,6 53,0
400 430 470 520
2226 2646 2664 2864
2370 2808 2827 3044
2573 3051 3068 3324
2263 2704 2722 2930
2407 2866 2884 3110
2610 3108 3125 3390
24,3 27,5 25,5 31,6
50,7 57,4 53,2 65,9
25,4 29,5 30,3 31,8
53,0 61,6 63,3 66,3
2189 2608 2626 2824
2333 2770 2789 3004
2536 3013 3030 3284
2226 2666 2684 2890
2370 2828 2846 3070
2573 3070 3087 3350
21,1 23,5 23,5 26,8
44,1 49,1 49,1 55,9
25,4 29,5 30,3 31,8
53,0 61,6 63,3 66,3
59