3
Refrigeration
Features
• Compatible with all standard
refrigerant oils.
• ASHRAE Designated.
• R22 like operating characteristics.
• Exceptionally Low TEWI.
10% Energy Reduction Over R22.
• Zero Ozone Depletion.
• No Expensive Retrofits.
• Can Be Topped Off Repeatedly.
• ASHRAE Rated A1.
Non Toxic - Non Flammable
Refrigerant - NU22
Temperature/ Pressures Chart
Temperature PSIG
R22
Mean
Average
Bubble Point
PSIG
Sat Liquid
Dew Point
PSIG
Sat Vapour
°F
°C
-40
-40
0.56
4.17
-36
-38
2.2
1.89
1.99
1.47
-30
-34
4.92 3.66
4.51
1.54
-26
-32
6.92 5.48
6.35
3.18
-20
-29 10.21 8.50
9.37
5.93
-16
-27 12.61 10.70
11.57
7.92
-10
-23 16.53 14.30
15.16
11.22
-6
-21 19.38 16.92
17.76
13.61
0
-18 24.03 21.19
22.00
17.55
6
-14 29.15 25.91
26.66
21.92
10
-12 32.84 29.30
30.01
25.05
16
-9
38.81 34.80
35.41
30.19
20
-7
43.09 38.76
39.32
33.86
26
-3
50.01 45.16
45.58
39.88
30
-1
54.98 51.97
56.76
44.16
36
2
62.89 57.08
57.25
51.10
40
4
68.56 62.33
62.37
56.05
46
8
77.62 70.75
70.57
64.05
50
10 84.06 76.74
76.40
69.77
56
13
94.3 87.38
88.95
78.88
60
16 116.3 99.11
95.67
85.36
66
19 113.2 105.11 106.40
95.72
70
21 121.4 112.81 113.96
103.06
76
24 134.5 125.09 125.99
114.78
80
27 143.6 133.69 134.46
123.00
86
30 158.2 147.36 147.88
136.00
90
32 168.4 157.02 157.30
145.37
96
35 184.6 172.23 172.17
159.93
100
38 195.9 182.93 182.60
170.30
106
41 213.8 199.75 199.05
186.40
110
43 226.4 211.62 210.56
197.91
116
47 246.1 230.01 228.65
215.29
120
49 260.0 242.93 241.29
227.49
126
52 281.7 263.36 261.14
247.25
130
54 296.9 277.49 274.97
260.61
136
58 320.7 299.82 296.64
282.12
140
60 337.4 315.48 311.73
297.32
R22 Drop-in Direct
Replacement
Advantages
• The only HFC based R-22 replacement that is compatible with both
synthetic and mineral oils (MO,AB,POE).
• Proven compatibility with all standard equipment components and
materials used in R-22 manufactured systems.
• Suitable for use in scroll, screw, rotary and reciprocating compressors.
• Closely matches R-22’s operational pressures.
• Can be used in a wide range of traditional R-22 temperature
applications, and beyond, while providing adequate oil return and
system capacity.
• Avoids the need for unnecessary oil changes and only requires minor
system adjustments or modifications.
• Zero ODP (ozone depletion potential) HFC refrigerant.
• Improved COP (coefficient of performance), NU-22 has a lower global
warming impact compared to R22, as indicated by NU-22’s TEWI (total
equivalent warming impact) measurement.
• Non-toxic and non-flammable (ASHRAE classification A1).
• Compatible with all standard refrigerant oils, NU-22 can drastically
reduce the level of waste oil handling and disposal normally associated
with using refrigerants requiring an oil change.
Performance Specs:
Boiling point
-41.8°C (-43.2°F)
Critical temperature
90.5°C (194.9°F)
Critical pressure
559 psia
Density (saturated vapor)
@ boiling point temp.
0.2447 lb/cf
Density liquid @ 25°C (77°F)
72.85 lb/cf
Heat of vaporization
@ boiling point temp.
89.42
BTU/lb
Quality Specs:
Max. moisture
0.001%vol
Max. non-condensable
1.5%vol
High boiling impurities
0.01%vol
Safety Specs:
ASHRAE designation
R417A
ASHRAE safety classification
A1
Max recommended exposure limits 1000 ppm
Refrigerant - NU22 (R417A)
Part #
Description
Weight
57-NU22
R22 drop-in direct replacement. 21.8kg (48lb)
NU-22
NU22 (R417A)
NU22 is quickly becoming the most practically accepted solution to the
phasing out challenge of HCFC-22. Availability ensured, this product
has been designed as a blend consisting of three separate pure HFC/
HC refrigerants (R125/ 134a/ 600) all mass-produced by a variety of
companies worldwide. With R22 similar operating characteristics, NU22
is ideal for new or existing R22 systems. A direct drop-in replacement,
this product does not require any expensive system modifications,
oil changes, product specific charging tools, instruments or retrofit
equipment. Ideal for use in low, medium and high temperature systems,
NU22 is the serviceman’s single source when it comes to replacing all
your R22 equipment applications. Used both as an OEM and service
replacement, NU-22 will dramatically assist in the removal of HCFCs from
the industry cycle.
57-NU22
Illustrated
ENVIRO Refrigerants
Refrigerant
