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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
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P70, P72, and P170 Series Controls for Low Pressure Applications
(Continued)
Standard Electromechanical Pressure Controls
Note: To order models not listed in the selection chart, please contact Johnson Controls/PENN® Refrigeration Application Engineering at
1-800-275-5676.
Product
Code
Number
Switch
Action
Range
psi (kPa)
Differential
psi (kPa)
Pressure
Connection
Max.
Overpressure
Max. Working
Pressure
Limited Knob
Adjustment
MICRO-SET Controls (For Non-Corrosive Refrigerants)
P70AB-12C SPST open low 12 in. Hg to 80
(-41 to 551)
Minimum 5 (34)
Maximum 35 (241)
36 in. capillary with 1/4 in. flare nut 525 psig
(3,617 kPa)
80 psig
(551 kPa)
Supplied,
but not assembled
P170AB-12C 1/4 in. external flare connector
P70EA-14C SPDT
1 to 3 open low
1 to 2 close low
36 in. capillary with 1/4 in. flare nut None
P170EA-14C 1/4 in. external flare connector
All-Range Controls (For Non-Corrosive Refrigerants)
P70AB-1C SPST open low 20 in. Hg
to 100
(-68 to 690)
Minimum 7 (48)
Maximum 50 (345)
1/4 in. external flare connector 325 psig
(2,239 kPa)
100 psig
(690 kPa)
Supplied,
but not assembled
P70AB-2C 36 in. capillary with 1/4 in. flare nut
P70BA-1C Manual reset
lockout
None
P70BA-10C 1/4 in. external flare connector
P70EA-10C SPDT
1 to 3 open low
1 to 2 close low
5 (34)
fixed
P72AA-1C DPST open low Minimum 7 (48)
Maximum 50 (345)
36 in. capillary with 1/4 in. flare nut
P72AB-1C Mounted on
differential screw
P170AB-2C SPST open low 1/4 in. external flare connector
P70CA-1C SPST open high 36 in. capillary with 1/4 in. flare nut None
P170CA-1C 1/4 in. external flare connector
All-Range Controls (Ammonia-Compatible)
P70AA-5C SPST open low 20 in. Hg to
100
(-68 to 690)
Minimum 7 (48)
Maximum 50 (345)
1/4 in. SS Internal NPT 325 psig
(2,239 kPa)
100 psig
(690 kPa)
None
P70CA-4C SPST open high
P70GA-11C Four-wire,
Two-circuit
Line M1 close low
Line M2 open low
P70HA-3C Manual reset
lockout
Selection Chart for Standard P70, P72, and P170 Controls for Low Pressure Applications
Technical Specifications
Single Pressure Controls Switch Action, Low Event, High Event, and Models
Switch and Action Low Event High Event Models
SPST Open Low Cut-Out
(Opens Line to M1)
Cut-In
(Closes Line to M1)
P70A, P70B, P170A
SPST Open High Cut-In
(Closes Line to M1)
Cut-Out
(Opens Line to M1)
P70C, P70D, P170C, P170D
SPDT Opens 1 to 2 and
closes 1 to 3
Closes 1 to 2 and
Opens 1 to 3
P70E, P70F
Four-Wire, Two-Circuits, 1 N.O., 1
N.C. Open Low
Cut-Out
(Opens M2 to Line and Closes M1 to Line)
Cut-In
(Closes M2 to Line and Opens M1 to Line)
P70G, P70H
Four-Wire, Two-Circuits, 1 N.O., 1
N.C. Open High
Cut-In
(Closes M2 to Line and Opens M1 to Line)
Cut-Out
(Opens M2 to Line and Closes M1 to Line)
P70J, P70K, P170K
DPST Open Low Cut-Out
(Opens M1 to Line and M2 to Line)
Cut-In
(Closes M1 to Line and M2 to Line)
P72A, P72B
DPST Open High Cut-In
(Closes M1 to Line and M2 to Line)
Cut-Out
(Opens M1 to Line and M2 to Line)
P72C, P72D