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The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson Controls office.
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc. www.johnsoncontrols.com
R-91
P70, P72 Approximate Low Pressure Settings for Typical Applications
Note: These settings represent approximate starting values. Actual values may vary widely, depending on application-specific guidelines.
Vacuum - in. Hg Approximate
Temperature
°F
Pressure - psig
1
1. Conversion factor: 1 psig = 6.9 kPa
Application Refrigerant
R-12 R-22 R-502 R-717 R-134A
Cut-Out Cut-In Cut-Out Cut-In Cut-Out Cut-In Cut-Out Cut-In Cut-Out Cut-In Cut-Out Cut-In
Ice Cube Maker - Dry Type Coil -11 14 4 17 16 37 22 45 – – 2 15
Sweet Water Bath - Soda
Fountain
20 31 21 29 43 56 52 66 33 45 18 26
Beer, Water, Milk Cooler, Wet
Type
17 31 19 29 40 56 48 66 – – 16 26
Ice Cream Trucks, Hardening
Rooms
-16 10 2 15 13 34 18 41 5 24 0 13
Eutectic Plates, Ice Cream Truck -21 -11 1 4 11 16 16 22 4 8 1 2
Walk In, Defrost Cycle 9 3714 34 32 64407523551232
Reach In, Defrost Cycle 20 39 19 36 40 68 48 78 30 57 16 36
Vegetable Display, Defrost Cycle 73813 3530663877 – –1034
Vegetable Display Case - Open
Type
12 45 16 42 35 77 44 89 – – 14 40
Beverage Cooler, Blower Dry
Type
11 37 15 34 34 64 42 75 24 55 12 32
Retail Florist - Blower Coil 29 45 28 42 55 77 65 89 44 67 26 40
Meat Display Case - Defrost
Cycle
19 38 17 35 37 66 45 77 – – 15 34
Meat Display Case - Open Type 42811 2727533563 – – 825
Dairy Case - Open Type 23810 3526663377 – –1634
Frozen Food - Open Type -32-97 5 4 178 24– –103
Standard Electromechanical Pressure Controls
Code No. LIT-1927220