Refrigerant Volume; Characteristics Of R-410A - Carrier 30RQ 039 Series Installation, Operation And Maintenance Instructions

20.8 - Refrigerant volume

The unit must be operated in cooling mode to find out, if
the unit charge is correct, by checking the actual subcooling.
Following a small refrigerant leak a loss of refrigerant,
compared to the initial charge will be noticeable in the
cooling mode and affect the subcooling value obtained at
the air heat exchanger (condenser) outlet, but it will not be
noticeable in the heating mode.
ImpOrTANT: It is therefore not possible to optimise the
refrigerant charge in the heating mode after a leak. The
unit must be operated in the cooling mode to check, if an
additional charge is required.

20.9 - Characteristics of R-410a

Saturated temperatures (°C) based on the relative pressure (in kpa)
Saturat. Relative Saturat. Relative
temp. pressure temp. pressure
-20 297 4 807
-19 312 5 835
-18 328 6 864
-17 345 7 894
-16 361 8 924
-15 379 9 956
-14 397 10 987
-13 415 11 1020
-12 434 12 1053
-11 453 13 1087
-10 473 14 1121
-9 493 15 1156
-8 514 16 1192
-7 535 17 1229
-6 557 18 1267
-5 579 19 1305
602 1344
-4 20
-3 626 21 1384
-2 650 22 1425
-1 674 23 1467
0 700 24 1509
1 726 26 1596
2 752 25 1552
3 779 27 1641
Aquasnap units use high-pressure R-410A refrigerant (the
unit operating pressure is above 40 bar, the pressure at 35°C
air temperature is 50% higher than for R-22). Special
equipment must be used when working on the refrigerant
circuit (pressure gauge, charge transfer, etc.).
46
Saturat. Relative Saturat. Relative
temp. pressure temp. pressure
28 1687 52 3088
29 1734 53 3161
30 1781 54 3234
31 1830 55 3310
32 1880 56 3386
33 1930 57 3464
34 1981 58 3543
35 2034 59 3624
36 2087 60 3706
37 2142 61 3789
38 2197 62 3874
39 2253 63 3961
40 2311 64 4049
41 2369 65 4138
42 2429 66 4229
43 2490 67 4322
2551 4416
44 68
45 2614 69 4512
46 2678 70 4610
47 2744
48 2810
49 2878
50 2947
51 3017