Refrigerant Characteristics - Trane TR-OHS RCU Series Installation, Operation And Maintenance Manual

Refrigerant Characteristics

Pressure/Temperature Settings
Tables below are provided to assist with the normal
settings of the system for R407C refrigerant. Where
applicable, minimum and maximum settings are given
along with normal operating pressures.
Table 7. Pressure/Temperature settings for R407C
Pressure/Temperature Settings For R407C
Sub-cooling °F
Superheat °F
Design Condensing Temp. @ 95°F
Suction Pressure (psig)- R407C
Switch State
Low Pressure Switch (psig)- R407C
High Pressure Switch (psig)- R407C
Saturated Refrigerant Pressure Table
The refrigerant vapor pressure tables below are provided
for reference for R407C refrigerant.
SS-SVX004C-EN
Normal Min. Max.
10 5 20
15 10 20
125 105 140
70 55 85
Opens Closes
10 32
410 Manual Reset
Table 8. Refrigerant vapor tables
R407C Refrigerant
Temp. (°F)
Saturated Evaporating Temperature
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
Saturated Evaporating Temperature
95
100
105
110
115
120
125
130
135
140
Installation
Pressure (psig)
37.9
40.1
42.3
44.7
47.1
49.6
52.1
Dew
54.8
Point
Saturated
57.5
Vapor
60.3
63.2
66.1
69.2
72.3
75.5
78.8
209
225
242
260
Bubble
279
Point
Saturated
298
Vapor
319
341
363
387
19