2024 WD CATALOG

AIR CONDITIONER - SYSTEM OPERATION

R-134a Pressure/Temperature Chart - SAE

Maximum Wire Length for 0.5 Voltage Drop

Condenser: Temperatures are not ambient temperatures.Add to ambient (35°–40°F) for proper heat transfer, then refer to pressure chart. For example: 90˚F ambient temperature + 40°F = 130°F Condenser temperature = 180 PSIG (based on 30 mph air flow)

Evaporator: Pressure (PSIG) represents gas temperatures inside the coil and not the coil surfaces. Add to temperature for coil and air-off temperatures ( 8°–10°F ). Conditions will vary for different system configurations. Refer to manufacturers specifications.

* Include return wire length (i.e. ground path)

Maximum Current In Amps

REFERENCE

REFERENCE

WIRE GAUGE

INFORMATION

INFORMATION

2

3 4 5

7.5

10

15

20

25

30

35

40

50

1

PSIG °F 16 16 18 19 20 22 22 25 24 27 26 30 28 32 30 34 32 36 34 39 36 41

PSIG °F 38 44 40 48 42 47 44 49 46 50 48 52 50 54 55 58 60 62 65 66 70 69

PSIG °F 75 73 80 76 85 79 90 82 95 85 100 88 105 91 110 93 115 96 120 98 125 101

PSIG °F 130 103 135 105 140 107 145 110 150 112 160 116 170 120 180 124 190 127 200 131 210 134

PSIG °F 220 137 230 141 240 144 250 147 260 150 270 152 280 155 290 158 300 160 310 163 320 165

PSIG °F 330 168 340 170 350 172 360 175 370 177 380 179 390 181 400 183

18 91

45

30 39 62

23 29 46 74

18 23 37 59

12 16 25 39 61

9

6 8

5 6

16 116 58 14 185 93

12

5 7

19 12 9

6

5

12 294 147 98

29 20151210 8

7

6

10 455 227 152 114 91

45 302318151311 9 71 48 36 29 24 20 18 14

8

714 357 238 179 143 95

Evaporator

Condenser

Black Gray Violet

Pink

Tan Brown Red Blue Yellow White Green Blu/Grn Orange Red

ATO Fuse Color

Maximum wire length in feet [multiply by 0.3048 to convert to meters]

RD-5-13053-0P Rev–

Wire Insulation O.D.

Voltage Drop Through Connectors * Current in Amps RESULTS BELOW in Millivolts DC 5 7.5 10 15 20 25 30 35 40

R-134a Pressure/Temperature Chart - Metric

Insulation Diameter in Inches [MM] TXL GXL SXL

TERMINAL

WIRE GAUGE

Metric Wire Size [mm 2 ]

0.250" Blade 2 4 5 7 1012151720 630 Metri-Pack 5 7 101520253035 280 Metri-Pack 6 9 1218232935 Weather-Pack 9 14 18 27 36 150 Metri-Pack 13 20 26 39 100 Micro-Pack 19 29 38 Deutsch Size 12 2 3 4 7 9 11 Deutsch Size 16 4 6 8 13 Deutsch Size 20 9 13 Thermostat 61 70 ISO Relay 46 54 62 79 95 111 128 144 161 Butt Splice 1 2 2 3 4 5 6 7 8 Ring Terminal 2 3 3 5 7 9101214

kPa

°C

kPa

°C

kPa

°C 23 24 26 28 29 31 33 34 36 37 38

kPa

°C 39 41 42 43 44 47 49 51 53 55 57

kPa

°C 58 61 62 64 66 67 68 70 71 73 74

kPa

°C 76 77 78 79 81 82 83 84

0.08 [2.0]

0.09 [2.3] 0.10 [2.6] 0.12 [3.0] 0.14 [3.6] 0.17 [4.4] 0.21 [5.3]

0.11 [2.7] 0.12 [3.0] 0.14 [3.6] 0.16 [4.1] 0.19 [5.0] 0.23 [5.8]

18 16 14 12 10

110 124 138 152 165 179 193 207 221 234 248

-9 -7 -6 -4 -3 -1

262 276 290 303 317 331 345 379 414 448 483

7 9 8 9

517 552 586 621 655 689 724 758 793 827 862

896 931 965

1517 1586 1655 1724 1793 1862 1931 1999 2068 2137 2206

2275 2344 2413 2482 2551 2620 2689 2758

0.80

1.00 0.09 [2.3] 2.00 0.10 [2.5] 3.00 0.12 [2.9] 5.00 0.15 [3.8] 8.00 0.18 [4.6]

1000 1034 1103 1172 1241 1310 1379 1448

10 11 12 14 17 19 21

0 1 2 4 5

Condenser

Evaporator

8

Condenser: Temperatures are not ambient temperatures.Add to ambient (35°–40°F) for proper heat transfer, then refer to pressure chart. For example: 90˚F ambient temperature + 40°F = 130°F Condenser temperature = 180 kPa (based on 30 mph air flow)

Evaporator: Pressure (kPa) represents gas temperatures inside the coil and not the coil surfaces. Add to temperature for coil and air-off temperatures ( 8°–10°F ). Conditions will vary for different system configurations. Refer to manufacturers specifications.

Copyright ©2017 Red Dot Corporation

PAGE 470

PAGE 471