62
12.2.10 - 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 efciency 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.
12.2.10.1 - Physical properties of units with the Free Cooling option
180 200 220 300 330 400 430 470 520
(1)
Standard unit + option 118A kg - - -
1447 1468 1939 1975 2147 2203 2619 2637 2833
Unit with option 15 + option 118A kg - - -
1555 1576 2065 2101 2290 2347 2781 2800 3013
Unit with option 15 + option 116S + 118A kg - - -
1694 1730 2225 2305 2494 2550 3024 3041 3293
(1)
Standard unit + option 118A kg - - -
1483 1505 1975 2011 2183 2240 2677 2695 2899
Unit with option 15 + option 118A kg - - -
1591 1613 2101 2137 2327 2384 2839 2857 3079
Unit with option 15 + option 116S + 118A kg - - -
1730 1767 2261 2341 2530 2587 3081 3098 3359
R410A
Circuit A
(1)
kg - - - 13,9 14,6 16,7 17,6 24,8 24,3 27,5 25,5 31,6
tCO
2
e - - - 29,0 30,5 34,9 36,7 51,8 50,7 57,4 53,2 65,9
Circuit B
(1)
kg - - - 14,0 14,6 25,0 24,7 25,4 25,4 29,5 30,3 31,8
tCO
2
e - - - 29,2 30,5 52,2 51,6 53,0 53,0 61,6 63,3 66,3
(1)
Standard unit + option 118B kg
1248 1286 1286 1416 1457 1910 1946 2110 2166 2581 2599 2793
Unit with option 15 + 118B kg
1331 1368 1369 1524 1565 2036 2072 2253 2310 2743 2762 2973
Unit with option 15 + option 116S + 118B kg
1470 1508 1508 1663 1719 2196 2276 2457 2513 2986 3003 3253
(1)
Standard unit + option 118B kg
1284 1322 1322 1452 1474 1946 1982 2146 2203 2639 2657 2859
Unit with option 15 + 118B kg
1366 1405 1405 1560 1582 2072 2108 2290 2347 2801 2819 3039
Unit with option 15 + option 116S + 118B kg
1505 1544 1545 1699 1736 2232 2312 2493 2550 3043 3060 3319
R410A
Circuit A
(1)
kg 8,4 10,9 10,9 12,6 13,1 14,7 15,4 20,3 21,1 23,5 23,5 26,8
tCO
2
e 17,5 22,8 22,8 26,3 27,4 30,7 32,2 42,4 44,1 49,1 49,1 55,9
Circuit B
(1)
kg 14,0 14,1 13,7 14,0 14,6 25,0 24,7 25,4 25,4 29,5 30,3 31,8
tCO
2
e 29,1 29,4 28,6 29,2 30,5 52,2 51,6 53,0 53,0 61,6 63,3 66,3
(1) Weightsareguidelinesonly.Refertotheunitnameplate.