Troubleshooting Guide

Appendix 4
iii) Pressure On Service Port
Cooling chart(R410A):
°F(°C)
ODU(DB)
IDU(DB/WB)
0(-17) 5(-15)
15
(-9.44)
45
(7.22)
75
(23.89)
85
(29.44)
95 (35)
105
(40.56)
115
(46.11)
120
(48.89)
BAR
70/59 (21.11/15) 6.4 6.5 7.3 8.0 8.2 7.8 8.1 8.6 10.1 10.6
75/63 (23.89/17.22) 6.7 6.8 7.9 8.6 8.6 8.3 8.7 9.1 10.7 11.2
80/67 (26.67/19.44) 7.1 7.2 8.5 9.5 9.3 8.9 9.1 9.6 11.2 11.9
90/73 (32.22/22.78) 7.7 7.8 9.6 10.5 10.3 9.5 10.0 10.6 12.4 13.0
PSI
70/59 (21.11/15) 93 94 106 116 119 113 117 125 147 154
75/63 (23.89/17.22) 97 99 115 125 124 120 126 132 155 162
80/67 (26.67/19.44) 103 104 123 138 135 129 132 140 162 173
90/73 (32.22/22.78) 112 113 139 152 149 138 145 154 180 189
MPa
70/59 (21.11/15) 0.64 0.65 0.73 0.8 0.82 0.78 0.81 0.86 1.01 1.06
75/63 (23.89/17.22) 0.67 0.68 0.79 0.86 0.86 0.83 0.87 0.91 1.07 1.12
80/67 (26.67/19.44) 0.71 0.72 0.85 0.95 0.93 0.89 0.91 0.96 1.12 1.19
90/73 (32.22/22.78) 0.77 0.78 0.96 1.05 1.03 0.95 1 1.06 1.24 1.3
0
0.2
0.4
0.6
0.8
1
1.2
1.4
70/59
75/63
80/67
90/73