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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-98
P70, P72, and P170 Series Controls for High Pressure Applications
(Continued)
Standard Electromechanical Pressure Controls
L1
L2
Load
Line
M1
Open-High switch action:
opens on pressure rise.
(C and D Models)
L1
L2
Load
Line
M1
Open-Low switch action:
opens on pressure drop.
(A and B Models)
p7s_wir_spst.eps
Typical Wiring for SPST
(P70A, B, C, D, and P170A, C, D, Models)
Line
M1
L1
L2
Load
Line
M2
Alarm
Circuit
Power
Alarm
Main circuit (Line to M2) opens and
auxiliary circuit (Line to M1) closes
on pressure rise.
p7s_wir-4-2.eps
Typical Wiring for Four-Wire Two-Circuit Switch used for a
High Pressure Cutout Application with an Alarm Circuit
(P70J, K, and P170K Models)
1
2
3
L1
L2
Load
Alarm
1 to 3 opens, and 1 to 2 closes
on pressure rise.
p7s_wir_spdt.eps
Typical Wiring for SPDT Switch (P70E, F Models)
Line
M1
L2
L1
Load
Line
M2
Line to M1, and Line to M2 open on pressure rise.
*L3
*(L3 is third supply line in 3-phase applications.)
p7s_wir_dpst.eps
Typical Wiring for DPST Switch (P72C, and D Models)