7 compressor operation, maint, and replacement 19, Danger, Warnings – Reznor YDSA Operation Manual User Manual
Page 19
Form O-Y P/N 273647R1, Page 19
R-410A Refrigerant
R-410A Refrigerant
R-410A Refrigerant
R-410A Refrigerant
R-410A Refrigerant
Pressure Temperature
Pressure Temperature
Pressure Temperature
Pressure Temperature Pressure Temperature
PSI
°F
°C
PSI
°F
°C
PSI
°F
°C
PSI
°F
°C
PSI
°F
°C
1.8
-55 -48.3
49.5
1
-17.2
77.0
19
-7.2
112.2
37
2.8
218.2
75
23.9
4.3
-50 -45.6
50.9
2
-16.7
78.7
20
-6.7
114.4
38
3.3
235.9
80
26.7
7.0
-45 -42.8
52.2
3
-16.1
80.5
21
-6.1
116.7
39
3.9
254.6
85
29.4
10.1
-40 -40.0
53.6
4
-15.6
82.3
22
-5.6
118.9
40
4.4
274.3
90
32.2
13.5
-35 -37.2
55.0
5
-15.0
84.1
23
-5.0
121.2
41
5.0
295.0
95
35.0
17.2
-30 -34.4
56.4
6
-14.4
85.9
24
-4.4
123.6
42
5.6
316.9
100 37.8
21.4
-25 -31.7
57.9
7
-13.9
87.8
25
-3.9
125.9
43
6.1
339.9
105 40.6
25.9
-20 -28.9
59.3
8
-13.3
89.7
26
-3.3
128.3
44
6.7
364.1
110 43.3
27.8
-18 -27.8
60.8
9
-12.8
91.6
27
-2.8
130.7
45
7.2
389.6
115 46.1
29.7
-16 -26.7
62.3
10 -12.2
93.5
28
-2.2
133.2
46
7.8
416.4
120 48.9
31.8
-14 -25.6
63.9
11
-11.7
95.5
29
-1.7
135.6
47
8.3
444.5
125 51.7
33.9
-12 -24.4
65.4
12
-11.1
97.5
30
-1.1
138.2
48
8.9
474.0
130 54.4
36.1
-10 -23.3
67.0
13 -10.6
99.5
31
-0.6
140.7
49
9.4
505.0
135 57.2
38.4
-8
-22.2
68.6
14 -10.0
101.6
32
0.0
143.3
50
10.0
537.6
140 60.0
40.7
-6
-21.1
70.2
15
-9.4
103.6
33
0.6
156.6
55
12.8
571.7
145 62.8
43.1
-4
-20.0
71.9
16
-8.9
105.7
34
1.1
170.7
60
15.6
607.6
150 65.6
45.6
-2
-18.9
73.5
17
-8.3
107.9
35
1.7
185.7
65
18.3
645.2
155 68.3
48.2
0
-17.8
75.2
18
-7.8
110.0
36
2.2
201.5
70
21.1
Temperature/Pressure Conversion Chart
All systems have a modulating capacity digital scroll compressor in Circuit A with a
digital compressor controller in the electric/control compartment. Circuit B has a digi-
tal scroll compressor controlled by staging. If equipped with an optional reheat circuit,
it is equipped with a modulating capacity digital scroll compressor with a separate
digital compressor controller in the electric/control compartment.
All compressors have crankcase heaters which must be powered up for 24 hours
prior to operating the compressor.
Compressors
3.7 Compressor
Operation,
Maintenance,
and
Replacement
WARNINGS
For your safety, wear eye protection, gloves, and protective
clothing when handling refrigerant and oil and when brazing.
Have a fire extinguisher nearby. See Hazard Levels, page 2.
DANGER
Never use oxygen to pressurize a refrigeration system. Oxygen
can explode on contact with oil and could result in personal
injury or death. When using high pressure gas such as nitrogen
for this purpose, ALWAYS USE A PRESSURE REGULATOR that
can control the pressure down to 1 or 2 psig. Failure to use a
regulator will result in extremely high pressure which could
exceed the burst pressure of the compressor or other system
components and result in personal injury or death. See Hazard
Levels, page 2.
DANGER
The refrigeration circuits are high pressure systems.
Hazards exist that could result in personal injury or death.
It is therefore required that the removal and installation of
these compressors be performed by a technician qualified
in R-410A refrigerant. See Hazard Levels, page 2.