JOHNSON CONTROLS
228
FORM 150.67-NM1
ISSUE DATE: 4/28/2017
SECTION 10 – MAINTENANCE
PSIG TEMPERATURE ˚F PSIG TEMPERATURE ˚F
0 -60 78 20
2 -58 80 21
4 -54 85 24
6 -50 90 26
8 -46 95 29
10 -42 100 32
12 -39 105 34
14 -36 110 36
16 -33 115 39
18 -30 120 41
20 -28 125 43
22 -26 130 45
24 -24 135 47
26 -20 140 49
28 -18 145 51
30 -16 150 53
32 -14 160 57
34 -12 170 60
36 -10 180 64
38 -8 190 67
40 -6 200 70
42 -4 210 73
44 -3 220 76
46 -2 225 78
48 0 235 80
50 1 245 83
52 3 255 85
54 4 265 88
56 6 275 90
58 7 285 92
60 8 295 95
62 10 305 97
64 11 325 101
66 13 355 108
68 14 375 112
70 15 405 118
72 16 500 134
74 17 600 149
76 19 700 159
R410-A PRESSURE TEMPERATURE CHART
ADDING REFRIGERANT CHARGE AFTER
COMMISSIONING
This unit utilizes HFC 410A refrigerant. HFC 410 A is
a blend refrigerant containing both HFC-32 and HFC-
125 (50/50 wt %). As this blend performs very much
like a single component refrigerant due to the closeness
of the individual refrigerant boiling points, any change
in composition due to a leak will be minimal. For this
reason, you may add to the charge at any time. It is not
necessary to remove the entire charge and weigh a new
charge in. It is important to remember to add this addi-
tional charge as a liquid following all applicable safety
procedures, and only after identifying and properly re-
pairing any leak found.
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