Refrigerant Volume; Characteristics Of R-410A - Carrier Aquasnap 30RQS 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
297 807
-20 4
835
-19 312 5
-18 328 864
6
-17 7 894
345
8 924
-16 361
379 956
-15 9
397 987
-14 10
-13 415 11 1020
-12 434 12 1053
1087
-11 453 13
-10 473 14 1121
493
-9 15 1156
-8 1192
514 16
-7 17 1229
535
18
-6 557 1267
579
-5 19 1305
-4 602 20 1344
1384
-3 626 21
-2 650 22 1425
-1 674 23 1467
1509
0 700 24
1596
1 726 26
2 752 25 1552
779 27
3 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.).
52
Saturat. Relative Saturat. Relative
temp. pressure temp. pressure
28 1687 3088
52
29 1734 53 3161
1781
30 54 3234
1830
31 55 3310
1880 3386
32 56
1930 57
33 3464
1981 58
34 3543
35 2034 59 3624
2087
36 60 3706
37 3789
2142 61
38 2197 3874
62
3961
39 2253 63
4049
40 2311 64
2369 4138
41 65
2429 4229
42 66
2490 67
43 4322
68
44 2551 4416
45 2614 69 4512
2678 70
46 4610
47
2744
48 2810
2878
49
2947
50
51 3017