Refrigerant Volume; Refrigerant Properties - Carrier Aquasnap 30RB Series Installation, Operation And Maintenance Instructions

13 - STANDARD MAINTENANCE

13.9 - Refrigerant volume

It is essential to run the unit in cooling mode to find out whether the charge is correct; this is done by checking the actual subcooling.
Following a slight leak, it will be possible to feel a drop in the refrigerant charge from the initial charge, and this will affect the subcooling
value obtained at the air-cooled exchanger outlet; it cannot, however, be felt in heating mode.

13.10 - Refrigerant properties

R32 properties
Relative
Satur. temp.
pressure
-20 306
-19 321
-18 337
-17 354
-16 371
-15 388
-14 406
-13 424
-12 443
-11 463
-10 483
-9 503
-8 524
-7 546
-6 568
-5 591
-4 614
-3 638
-2 662
-1 687
0 713
1 739
2 766
3 794
Saturated temperatures (°C) based on the relative pressure (in kPa)
Relative
Satur. temp.
pressure
4 822
5 851
6 881
7 912
8 943
9 974
10 1007
11 1040
12 1074
13 1109
14 1144
15 1181
16 1218
17 1256
18 1295
19 1334
20 1375
21 1416
22 1458
23 1501
24 1545
26 1635
25 1590
27 1682
Relative
Satur. temp.
pressure
28 1730
29 1778
30 1828
31 1878
32 1929
33 1982
34 2035
35 2090
36 2145
37 2202
38 2260
39 2318
40 2378
41 2439
42 2501
43 2565
44 2629
45 2695
46 2762
47 2830
48 2899
49 2969
50 3041
51 3114
Relative
Satur. temp.
pressure
52 3189
53 3264
54 3341
55 3420
56 3500
57 3581
58 3664
59 3748
60 3833
61 3920
62 4009
63 4099
64 4191
65 4284
66 4379
67 4476
68 4575
69 4675
70 4777
49