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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-106
P32 Series Sensitive Pressure Switch
Description
This differential pressure switch is used to
sense pressure/air flow in ducts.
Refer to the P32 Series Sensitive Differential
Pressure Switch Product Bulletin
(LIT-125435) for important product application
information.
P32 Series
Action on Increase
of Pressure
Y
R
B
P28 Action Diagram
p32.eps
Features
easy-to-read setpoint scale
versatile mounting options
Applications
pressure/air flow proving with electric duct
heaters, humidifiers, and other equipment
maximum pressure/air flow control for
variable volume systems
reheat duct powered systems
clogged filter detection
detection of icing of air conditioning coils
and initiation of defrost cycle
sensitive pressure settings
dust-tight snap switch
Selection Chart
Product
Code
Number
Ambient
Temperature
Min./Max.
Connector Maximum
Over-
pressure
psig
(kPa)
1
1. Maximum overpressure at either connection
Contact
Action
Range
in. WC
(kPa)
Sensitivity
at Min.
Setpoint
in. WC (kPa)
Setpoint Scale
Plate
Mounting Bracket
(Included)
P32AC-1C
-40°F (-40°C)
min.
167°F (75°C)
max.
High Pressure
connectors are metal
1/8 in. internal NPT
inside, 1/2 in. NPSM
outside for mounting
Low pressure
connectors are
molded,
1/8 in. internal NPT
1
(6.895)
SPDT
0.15 to 12
(0.037 to 2.99)
0.07
(0.017)
Adjustable Yes
L
BKT182-1
P32AC-2C
2
2. Supplied with 1/4 in. compression fitting, 4 in. extension tube, two mounting screws, and O-gasket (angle barbed fitting installed)
0.05 to 5
(0.012 to 1.24)
0.04
(0.01)
U
BKT229-1
P32AF-1C
0.025
(0.006)
L
BKT182-1
P32AF-2C
2
U
BKT229-1
Accessories
The switch can be mounted directly or with the supplied mounting
bracket.
Product Code
Number
Description
FTG18A-600R Remote Mounting Kit: 4 in. flanged sensing tube,
two barbed fittings, two No. 10 screws, and a gasket
Technical Specifications
Electrical Ratings
Motor Ratings VAC 120 208 240
Type P32AC (Standard Differential, 1/2 hp)
AC Full Load A 9.8 5.65 4.9
AC Locked Rotor A 58.8 33.9 29.4
Non-Inductive or Resistive Load 15 A, 24 to 277 VAC
Pilot Duty 125 VA, 24 VAC; 360 VA,
120 to 277 VAC
Type P32AF (Close Differential, 1/4 hp)
AC Full Load A 5.8 3.3 2.9
AC Locked Rotor A 34.8 19.8 17.4
Non-Inductive or Resistive Load 10 A, 24 to 277 VAC
Pilot Duty 125 VA, 24 VAC; 360 VA,
120 to 277 VAC
P32 Sensitive Pressure Switch
bracket1.eps
bracket2.eps
bracket1.eps bracket2.eps
Electromechanical Lube Oil and Differential Pressure Controls
Code No. LIT-1927195
Repair Information
If the P32 Series Sensitive Pressure Switch
fails to operate within its specifications,
replace the unit. For a replacement switch,
contact the nearest Johnson
Controls®
representative.