Major System Components; General - Carrier 48/50PG Series Controls, Start-Up, Operation, Service And Troubleshooting Instructions

Table 22 – Pressure (psig) vs. Voltage Drop Values for Suction Pressure Transducers
PRESSURE VOLTAGE
(psig) DROP (V)
0
0.465
2
0.485
4
0.505
6
0.524
8
0.544
10
0.564
12
0.583
14
0.603
16
0.623
18
0.642
20
0.662
22
0.682
24
0.702
26
0.721
28
0.741
30
0.761
32
0.780
34
0.800
36
0.820
38
0.839
40
0.859
42
0.879
44
0.898
46
0.918
48
0.938
50
0.958
52
0.977
54
0.997
56
1.017
58
1.036
60
1.056
62
1.076
64
1.095
66
1.115

MAJOR SYSTEM COMPONENTS

General

The 48/50PG and 48/50PM single package rooftop units contain
the ComfortLink™ electronic control system that monitors all
operations of the rooftop. The control system is composed of
several main control components and
installed options or field-installed accessories as listed in
sections below. See Fig. 28- -39 for the control and power
schematics for 48/50PG. See Fig. 34- -39 for the control and power
schematics for 48/50PM. Fig. 40- -42 shows the layout of the
control box, unit, and thermistor and transducer locations for the
48/50PG and Fig. 43- -44 for the 48/50PM.
PRESSURE VOLTAGE
(psig) DROP (V)
68
1.135
70
1.154
72
1.174
74
1.194
76
1.214
78
1.233
80
1.253
82
1.273
84
1.292
86
1.312
88
1.332
90
1.351
92
1.371
94
1.391
96
1.410
98
1.430
100
1.450
102
1.470
104
1.489
106
1.509
108
1.529
110
1.548
112
1.568
114
1.588
116
1.607
118
1.627
120
1.647
122
1.666
124
1.686
126
1.706
128
1.726
130
1.745
132
1.765
134
1.785
available factory-
PRESSURE VOLTAGE
(psig) DROP (V)
136
1.804
138
1.824
140
1.844
142
1.863
144
1.883
146
1.903
148
1.922
150
1.942
152
1.962
154
1.982
156
2.001
158
2.021
160
2.041
162
2.060
164
2.080
166
2.100
168
2.119
170
2.139
172
2.159
174
2.178
176
2.198
178
2.218
180
2.237
182
2.257
184
2.277
186
2.297
188
2.316
190
2.336
192
2.356
194
2.375
196
2.395
198
2.415
200
2.434
202
2.454
57
PRESSURE VOLTAGE
(psig) DROP (V)
204
2.474
206
2.493
208
2.513
210
2.533
212
2.553
214
2.572
216
2.592
218
2.612
220
2.631
222
2.651
224
2.671
226
2.690
228
2.710
230
2.730
232
2.749
234
2.769
236
2.789
238
2.809
240
2.828
242
2.848
244
2.868
246
2.887
248
2.907
250
2.927
252
2.946
254
2.966
256
2.986
258
3.005
260
3.025
262
3.045
264
3.065
266
3.084
268
3.104
270
3.124