Penn P72 Series User manual

Master Catalog 125
Pressure Controls Section P
Product/Technical Bulletin P70
Issue Date 0318
© 2018 Johnson Controls 1
Code No. LIT-125454 www.johnsoncontrols.com
The P70, P72, and P170 controls for high pressure
applications are designed primarily for high pressure
cut-out control, head-pressure control, and condenser
fan cycling control on commercial refrigeration and air
conditioning applications. Some models are
UL  (Underwriters Laboratories) Listed as
refrigeration pressure limiting controls.
Controls are available in several pressure ranges and
are compatible with most common refrigerants.
They may also be used on other non-corrosive fluid
applications. Ammonia compatible models are also
available.
Several different electrical ratings and switch
configurations are available. The P72 models provide
direct control of 208-240 volt single-phase motors up
to 3 hp, and 208-220 volt 3-phase motors up to 5 hp.
Figure 1: P70CA-2 High Pressure Cutout Control
Features and Benefits
All Steel Case and Cover
Provides long lasting, rugged protection for
internal components
“Sight-Set” Calibrated
Pressure Adjustment
Displays a visible pressure scale, fully
adjustable through the range without
removing the cover (on NEMA 1 enclosure
models)
Manual Reset Lockout
Option
Provides “trip-free” lockout that cannot be
overridden or reset until pressure returns to
specified level
A Variety of Pressure
Connection Styles
Available
Allows greater flexibility when mounting
control and adapting pressure connections to
field application requirements
P70, P72, and P170 Controls for
High Pressure Applications

2P—P70, P72, and P170 Controls for High Pressure Applications Product/Technical Bulletin
Application
P70, P72, and P170 Series controls for high pressure
applications are designed primarily to provide
high-side pressure control on commercial refrigeration
and air conditioning applications.
IMPORTANT: Except for those models listed as
Refrigeration Pressure Limiting
Controls, the P70, P72, and
P170 Series controls for high
pressure applications are
intended to control equipment
under normal operating
conditions. Where failure or
malfunction of the P70, P72, and
P170 pressure controls could
lead to an abnormal operating
condition that could cause
personal injury or damage to the
equipment or other property,
other devices (limit or safety
controls) or systems (alarm or
supervisory systems) intended to
warn of or protect against failure
or malfunction of the P70, P72,
and P170 pressure controls must
be incorporated into and
maintained as part of the control
system.
P70C, P70D P170C and P170D models with
Single-Pole Single-Throw (SPST) Open-high
switch action are the most popular models, and
are typically used for high-pressure cutout. The
C models are automatic reset. The D models
have a manual reset lockout mechanism. Some
P70C, P70D P170C and P170D models are
UL Listed as refrigeration pressure limiting
controls.
P70A and P170A models are available with
SPST Open-low switch action, and typically are
used for condenser fan cycling control.
P70 and P170 models with Single-Pole
Double-Throw (SPDT), or 4-wire, 2-circuit switch
action allow users to install alarm devices or other
control circuits.
P72 models have a Double-Pole Single-Throw
(DPST) switch with load-carrying contacts that can
provide direct control of 208-240 V single-phase
motors up to 3 hp, and 208-220 V 3-phase motors
up to 5 hp. Refer to Table 8.
Controls are available in several pressure ranges and
are compatible with most common refrigerants.
They may also be used on air, water and other
non-corrosive fluid applications. Ammonia compatible
models are also available.
!
CAUTION: Equipment Damage Hazard.
Ammonia is very corrosive to
copper and brass components.
On ammonia applications, only
ammonia-compatible control
models and pressure
connections must be used. The
pressure control must be
mounted separately from the
electrical cabinet and all
electrical piping sealed to
prevent ammonia from migrating
to electrical components.
The Manual Reset Lockout mechanism does not
allow the pressure control to automatically reset after
the control has cut out, providing shutdown capability
for unmonitored equipment. See Manual Reset
Operation.
NEMA 1 enclosures are standard on most models.
NEMA 3R enclosures are also available.
Operation
A pressure-actuated bellows on the control is
connected to a pressure tap on the controlled
equipment by a capillary or a field-installed hose
(except ammonia models). The bellows responds to
equipment pressure changes and operates a
snap-action electrical switch.

P—P70, P72, and P170 Controls for High Pressure Applications Product/Technical Bulletin 3
Dimensions
2 Mounting Holes
10-32 UNF-2B Thread 5/16
(8)
4
3-1/16
(77)
1-5/16
(34)
1/16
(2)
(24)
2-1/16
(53) 1-1/4
(33)
3/16
(5)
3/16
(5) Diameter
3-1/4
(83)
15/16
(24)
2-15/16
1-11/16
(43)
Capillary or
Connector
as specified
3-1/4
(83)
(8)
1
(25)
1-1/16
(29)
1-7/8
(48)
5/16
3/8
(10) X3/16
(5)
Diameter
Mounting Hole
7/8
(22)
Mounting Hole
3/16
(5)
15/16
(24)
5/16
15/16
101
Diameter
or 1-1/8
(28) (1/2 in. 3/4 in. Trade Size)
or
Figure 2: Dimensions for High Pressure Controls with NEMA 1 Enclosure, in. (mm)
1/2
(13)
4-1/16
(104)
4-1/16
(104)
5/8
(16)
5/8
(16)
3-1/8
(79)
2-15/16
(74)
2-3/4
(70) 3/16
(5)
1/2
(12)
1
(25)
2-11/16
(68)
1-1/4
(31)
5/8
(15)
1-9/16
(40)
3/4-NPSM
Threaded
Rigid Conduit
Connector
(8) Diameter
4-
15/16
(24)
(10)
3/8
Mounting Holes
5/16
Figure 3: Dimensions for High Pressure Controls with NEMA 3R Enclosure, in. (mm)
Note: These dimensions are nominal and are subject to accepted manufacturing tolerances and application variables.

4P—P70, P72, and P170 Controls for High Pressure Applications Product/Technical Bulletin
Mounting
Mount the control in an accessible position, where the
control and pressure connection line will not be subject
to damage.
!
CAUTION: Equipment Damage Hazard.
Mount the pressure control
upright and level. Position the
pressure connection line to
allow drainage away from
control bellows. Pressure tap
points must be located on the
top side of the refrigerant lines.
This reduces the possibility of
oil, liquids, or sediment
accumulating in the bellows,
which could cause control
malfunction.
Controls with NEMA 1 enclosures may be mounted on
flat, horizontal, or vertical surfaces.
Use two screws or bolts through the two outer holes
on the back of the control case when mounting control
directly to a flat vertical surface.
Use the two inner holes with the Universal Mounting
Bracket (and screws supplied) when mounting the
control to a flat horizontal surface.
IMPORTANT: Use only the mounting screws
provided with the Universal
Mounting Bracket to avoid
damaging internal components.
Do not warp control case when
mounting control to uneven
surface.
Controls with NEMA 3R enclosures are designed to be
mounted in a level, upright position with the bellows
and conduit connection facing down. All gaskets must
be in place. Mounting NEMA 3R enclosures in any
position other than upright and level may trap water in
the enclosure and submerge internal control
components.
Use mounting screws
provided. Longer screws
may damage control.
Mounting Holes for
Flat Vertical Surfaces
Universal Mounting
Bracket
(Part No. 271-51)
Mount bracket to
horizontal surface.
Figure 4: Mounting the P70, P72, and P170 High
Pressure Control with NEMA 1 Enclosure
Pressure Connections
P70, P72, and P170 high pressure controls are
connected to the controlled equipment by a capillary or
flexible hose (except ammonia models). These
controls are available with a variety of pressure
connection styles. See Figure 10 for pressure
connection styles.
Follow these guidelines when installing pressure
connection lines.
IMPORTANT: If these controls are installed on
equipment that contain
hazardous or regulated
materials, such as refrigerants or
lubricants, the installer and user
should observe all regulations
governing the handling and
containment of those materials.
Avoid Sharp Bends in the Capillary Tube
Sharp bends can weaken or kink capillary tubes, which
may result in leaks or restrictions.
Allow for Slack in the Capillary Tube
Leaving a little slack in the capillary tube helps
dampen mechanical vibration that can weaken or
damage capillary tubes.
Coil and Secure Excess Capillary Tubing
Carefully loop any excess capillary tubing into smooth,
circular coils (approximately 3 in. diameter). Securely
fasten the coiled tubing.

P—P70, P72, and P170 Controls for High Pressure Applications Product/Technical Bulletin 5
Avoid Contact Between the Capillary Tubing and
Sharp or Abrasive Objects
Vibration of sharp or abrasive objects in contact with
capillary tubes can result in leaks.
Do Not Overtighten Flare Nuts on Pressure
Connection Line Fittings
Overtightening flare connections may damage the
threads on the flare nuts or flare connectors, and may
result in leaks. Do not exceed 9 ft-lb (12 N-m) of
torque when tightening brass flare connections.
Avoid Severe Pressure Pulsation at Pressure
Connections
Install pressure connection lines to pressure tap points
away from the compressor, to minimize the effects of
pressure pulsation from reciprocating compressors.
IMPORTANT: After installing control, evacuate
control and pressure connection
lines in accordance with
applicable EPA and other
regulations, to remove air,
moisture, and other
contaminants.
Wiring
P70, P72, and P170 controls for high pressure
applications are available with several switch options
and electrical ratings. Check the label inside the
control cover for model number, switch action, and
electrical rating. (See to Table 1 for switch action and
models.)
Check the wiring terminal designations on the control
switch-block and refer to the following guidelines and
applicable wiring diagrams, when wiring the control.
!
WARNING: Risk of Electrical Shock.
Disconnect power supply before
making electrical connections to
avoid possible electrical shock or
equipment damage.
IMPORTANT: Use terminal screws furnished in
the switch block. Using other
terminal screws will void the
warranty and may damage the
switch.
IMPORTANT: Make all wiring connections in
accordance with the National
Electrical Code and all local
regulations. Use copper
conductors only. Do not exceed
the control’s electrical rating.
L1
L2
Load
Line
M1
Open-high switch action:
opens on pressure rise.
(C and D Models)
Open-low switch action:
opens on pressure drop.
(A and B Models)
L1
L2
Load
Line
M1
Figure 5: Typical Wiring for SPST Switch
(P70A, B, C, D and P170A, C, D Models)
1
2
3
L1
L2
Load
Alarm
1 to 3 opens, and 1 to 2 closes
on pressure rise.
Figure 6: Typical Wiring for SPDT Switch
(P70E, F Models)

6P—P70, P72, and P170 Controls for High Pressure Applications Product/Technical Bulletin
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.
Figure 7: Typical Wiring for 4-wire 2-circuit Switch
used for a High Pressure Cutout Application
with an Alarm Circuit
(P70J, K, and P170K 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.)
Figure 8: Typical Wiring for DPST Switch
(P72C, and D Models)
Table 1: Single Pressure Controls Switch Action, Low Event, High Event, and Models
Switch and Action
Low Event
High Event
Models
Single-Pole Single-Throw
(SPST) Open-low
Cut Out
(Opens Line to M1)
Cut In
(Closes Line to M1)
P70A, P70B, P170A
Single-Pole Single-Throw
(SPST) Open-high
Cut In
(Closes Line to M1)
Cut Out
(Opens Line to M1)
P70C, P70D, P170C, P170D
Single-Pole Double-Throw
(SPDT)
Opens 1 to 2 and
closes 1 to 3
Closes 1 to 2 and
Opens 1 to 3
P70E, P70F
4-Wire, 2-Circuits,
1-NO, 1-NC
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
4-Wire, 2-Circuits,
1-NO, 1-NC
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
Double-Pole Single-Throw
(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
Double-Pole Single-Throw
(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

P—P70, P72, and P170 Controls for High Pressure Applications Product/Technical Bulletin 7
Adjustments
Adjustment of the P70, P72, and P170 high pressure
controls vary, depending on the model. The following
guidelines and diagrams illustrate the procedures for
adjusting these controls. Refer to the product label
inside the control cover for model number and switch
action. Refer to Table 1 for switch action, low event,
and high event for the various control models.
High Pressure Cutout - Automatic Reset
High pressure cutout controls with automatic reset
have a scaleplate that displays the CUT IN and
CUT OUT setpoints. (See the visible scale on the
control.) Turning the range screw adjusts the CUT IN
and CUT OUT setpoints up or down simultaneously,
while maintaining a constant pressure differential.
Turning the differential screw adjusts only the low
event on the left side of the scale, and changes the
pressure differential between the CUT IN and
CUT OUT pressures.
High Pressure Cutout - Manual Reset Lockout
High pressure cutout controls with the Manual Reset
Lockout option have a scaleplate that displays the
CUT OUT setpoint. There is no pointer for the CUT IN
setpoint. (See the visible scale on the control.)
Turning the range screw adjusts the CUT OUT
setpoint on the right side of the scale. There is no
differential screw on Manual Reset Lockout models.
Condenser Fan Cycling - Open-low Switch Action
Condenser fan cycling pressure controls have a
scaleplate that displays the CUT IN setpoint and
DIFFERENTIAL setting. (See visible scale on the
control.) Turning the range screw adjusts the CUT IN
setpoint on the right side of the scale. Turning the
differential screw adjusts the DIFFERENTIAL setting
on the left side, which changes the resulting cutout
pressure.
IMPORTANT: Do not adjust pointers beyond
the highest or lowest indicator
marks on the control’s pressure
scale. Adjusting pointers beyond
indicator marks may damage
screw threads and cause
inaccurate control operation
Figure 9: Adjusting P70, P72, and P170 Controls for High Pressure Applications

8P—P70, P72, and P170 Controls for High Pressure Applications Product/Technical Bulletin
IMPORTANT: Use the pressure control settings
recommended by the
manufacturer of the controlled
equipment. Do not exceed the
pressure ratings of the controlled
equipment or any of its
components when checking
pressure control operation or
operating the controlled
equipment.
IMPORTANT: After installing and adjusting
pressure control, and before
leaving installation, cycle the
controlled equipment several
times (at least three) at normal
operating conditions. Use reliable
pressure gauges to verify proper
control settings and equipment
operation.
Manual Reset Operation
Pressure controls with the Manual Reset option, lock
out when they reach cut out pressure and must be
manually reset by the user to restart the controlled
equipment. The manual reset mechanism is “trip-free”
and cannot be overridden by blocking or tying the
reset button down.
On equipment with locked out controls, first determine
and remedy the cause of the lockout, and allow the
sensed pressure to drop at least 70 psig below the
CUT OUT setpoint. Then, press and release the reset
button on the front of the control to restore operation of
the controlled equipment.

P—P70, P72, and P170 Controls for High Pressure Applications Product/Technical Bulletin 9
Ordering Information
P70, P72, and P170 controls for high pressure
applications are available in a variety of standard
and non-standard models. Table 2 lists the
standard models available through most
Johnson Controls/PENN Authorized Distributors.
Table 3 is a model identification matrix that depicts all
the potential P70, P72, and P170 control models. Not
all control models depicted in Table 3 are
manufactured and available. Figure 10 illustrates the
pressure connection styles available on P70, P72, and
P170 control models.
Contact your Johnson Controls/PENN Authorized
Representative for availability and price.
Table 2: Standard P70, P72, and P170 Controls for High Pressure Applications
Code
Number
Switch
Action
Range
psig (kPa)
Differential
psi (kPa)
Pressure
Connection
Condenser Fan Cycling Controls (for Non-Corrosive Refrigerants)
P70AA-118
SPST
Open-low
100 to 400
(690 to 2758)
Minimum 35 (241)
Maximum 200 (1379)
36 in. Capillary with
1/4 in. Flare Nut
P70AA-2
0 to 150
(0 to 1034)
Minimum 12 (83)
Maximum 70 (482)
P72AA-27
DPST
Open-low
100 to 400
(690 to 2758)
Minimum 35 (241)
Maximum 200 (1379)
P170AA-118
SPST
Open-low
1/4 in. Male
Flare Connector
All Range Controls (for Non-Corrosive Refrigerants)
P70CA-2*
SPST
Open-high
50 to 500
(345 to 3448)
Minimum 60 (414)
Maximum 150 (1034)
1/4 in. Male
Flare Connector
P70CA-3*
36 in. Capillary with
1/4 in. Flare Nut
P70DA-1*
Manual Reset Lockout
P70KA-1
4-wire, 2-circuit
Line-M1 Close-high
Line-M2 Open-high
P72CA-2*
DPST
Open-high
Minimum 60 (414)
Maximum 150 (1034)
P72DA-1*
Manual Reset Lockout
P170CA-3*
SPST
Open-high
Minimum 60 (414)
Maximum 150 (1034)
1/4 in. Male
Flare Connector
P170DA-1*
Manual Reset Lockout
P170KA-1
4-wire, 2-circuit
Line-M1 Close-high
Line-M2 Open-high
Ammonia Compatible Models
P70AA-119
SPST
Open Low
50 to 300
(345 to 2068)
Minimum 20 (138)
Maximum 120 (827)
1/4 in. SS Female NPT
P70CA-5*
SPST
Open-high
50 to 500
(345 to 3448)
Minimum 60 (414)
Maximum 150 (1034)
P70DA-2*
Lockout
(requires manual reset)
*Models (Code Number) that are UL Listed as refrigeration pressure limiting controls.
Note: See Dimensions and Specifications for additional model information including Maximum Working Pressure and
Maximum Over-pressure ratings.

10 P—P70, P72, and P170 Controls for High Pressure Applications Product/Technical Bulletin
Table 3: P70, P72, and P170 Single Pressure Control Identification Chart
P70
Various pressure connection styles available on many models (See Figure 10.)
P170
1/4 in. male flare pressure connection only (Style 5, see Figure 10.)
P72
DPST switch only, 3/4 in. conduit opening on most models, (E, F, G, H, J, and K, models not available)
A
SPST switch (DPST in P72), Open-low, automatic reset
B
SPST switch (DPST in P72), Open-low, manual reset lockout
C
SPST switch (DPST in P72), Open-high, automatic reset
D
SPST switch (DPST in P72), Open-high, manual reset lockout
E
1 hp SPDT switch (n/a in P72), automatic reset
F
1/4 hp SPDT switch (n/a in P72), automatic reset
G
4-wire, 2-circuit switch (n/a in P72), main switch Open-low, automatic reset
H
4-wire, 2-circuit switch (n/a in P72), main switch Open-low, manual reset lockout
J
4-wire, 2-circuit switch (n/a in P72), main switch Open-high, automatic reset
K
4-wire, 2-circuit switch (n/a in P72), main switch Open-high, manual reset lockout
A
NEMA 1 enclosure, no adjustment knob
B
NEMA 1 enclosure, with adjustment knob
C
No enclosure, no adjustment knob
D
No enclosure, with adjustment knob
E
NEMA 3R enclosure, no adjustment knob
G
NEMA 3R enclosure, no adjustment knob, 1/2 in. conduit
H
NEMA 1 enclosure, no adjustment knob, 1/4 in. quick connects
J
NEMA 1 enclosure with adjustment knob, 1/4 in. quick connects
N
NEMA 1 enclosure no adjustment knob, transportation application
P
NEMA 1 enclosure with adjustment knob, transportation application
S
NEMA 3R enclosure, no adjustment knob, transportation application
Note: Not all combinations shown on this chart are available. To verify product availability and for quantity orders
of non-standard items, please contact Refrigeration Application Engineering at [phone].
7/16-20 UNF-2A Thread;
1/4 in. SAE Male
Flare Connector*
1/4-18 NPT Female Thread;
Brass for Use with
Non-corrosive Refrigerants,
Stainless Steel for use
with Ammonia
Copper Capillary with
1/4 in. SAE Female
Flare Connector
(Style 45 includes a
valve stem depressor.)
Copper Capillary with
1/4 in. Copper Sweat
Copper Capillary with
1/4 in. SAE Female
Flare Connector
with 90° Bend
*Note: Style 5, Connector may require a copper flare saver gasket, which must be purchased separately.1/4 in. SAE Male Flare
Style 34 Style 15 Style 5 Style 37Style 13 or 45
Figure10: Pressure Connections Styles Available on P70, P72, and P170 Controls

P—P70, P72, and P170 Controls for High Pressure Applications Product/Technical Bulletin 11
Electrical Ratings
Table 4: SPST Electrical Ratings (P70A, B, C, and D, and P170A, C, and D Models)
Standard Single-Phase Ratings
Hermetic Compressor
Single-Phase Ratings
120 VAC
208 VAC
240 VAC
208/240 VAC
Motor Horsepower
1.5
3
3
--
Motor Full-Load Amperes
20
18.7
17
20
Motor Locked-Rotor Amperes
120
112.2
102
120
Non-Inductive Amperes
22
22
22
--
Pilot Duty
125 VA at 120 to 600VAC; 57.5 VA at 120 to 300 VDC
Table 5: SPDT Electrical Ratings 1hp Switch (P70E Models)
Standard Single-Phase Ratings
120 VAC
208 VAC
240 VAC
277 VAC*
Motor Full Load Amperes
16.0
9.2
8.0
7.0
Motor Locked Rotor
Amperes
96.0
55.2
48.0
42.0
Non-Inductive Amperes
16.0
9.2
8.0
--
Pilot Duty
125 VA at 120 to 600 VAC
125 VA at 24 to 600 VAC
* Rating for P70EC models only.
Table 6: SPDT Electrical Ratings 1/4 hp Switch (P70F Models)
Standard Single-Phase Ratings
120 VAC
208 VAC
240 VAC
Motor Full Load Amperes
6.0
3.3
3.0
Motor Locked Rotor
Amperes
36.0
19.8
18.0
Non-Inductive Amperes
6.0
6.0
6.0
Pilot Duty
125 VA at 24 to 240 VAC
Table 7: 4-wire, 2-circuit Electrical Ratings (P70G, H, J, and K, and P170K Models)
Standard Single-Phase Ratings
Line-M2 (Main Contacts)
Line-M1 (Auxiliary Contacts)
120 VAC
208 VAC
240 VAC
277 VAC
120 VAC
208 VAC
240 VAC
277 VAC
Motor Full Load
Amperes
16.0
9.2
8.0
--
6.0
3.3
3.0
--
Motor Locked Rotor
Amperes
96.0
55.2
48.0
--
36.0
19.8
18.0
--
Non-Inductive
Amperes
16.0
9.2
8.0
7.2
6.0
6.0
6.0
6.0
Pilot Duty (for both
sets of contacts)
125 VA at 24 to 600 VAC; 57.5 VA at 120 to 300 VDC

12 P—P70, P72, and P170 Controls for High Pressure Applications Product/Technical Bulletin
Table 8: DPST Electrical Ratings (P72A, B, C, and D Models)
Standard Ratings
Hermetic Compressor
Ratings
120 VAC
1Ø
208 VAC
1Ø
240 VAC
1Ø
208 VAC
3Ø
220 VAC
3Ø
208 VAC
1Ø
240 VAC
1Ø
Motor Horsepower
2
3
3
5
5
--
--
Motor Full-Load Amperes
24
18.7
17
15.9
15
24
24
Motor Locked-Rotor Amperes
144
112.2
102
95.4
90
144
144
AC Non-Inductive Amperes
24
24
24
24
24
--
--
DC Non-Inductive Amperes
3
0.5
0.5
0.5
0.5
--
--
Pilot Duty
125 VA at 120 to 600VAC; 57.5 VA at 120 to 300 VDC
Specifications
Product
P70, P72, and P170 Controls for High Pressure Applications
Switch Action
P70, P170: SPST; 4-wire/2-circuit; or SPDTPENNswitch
P72: DPST
Pressure Connection
P70, P72 Standard Models
Various connections
available
See Figure 10.
P170 Standard Models
1/4 in. SAE male flare
See Figure 10.
Ammonia Compatible Models
1/4 in. stainless steel female
NPT connection
See Figure 10.
Maximum Working
Pressure
For 0-150 psig
range: 150 psig
(1034 kPa)
For 50-300 psig
range: 300 psig
(2068 kPa)
For 100-400 psig
range: 400 psig
(2758 kPa)
For 50-500 psig
range: 500 psig
(3448 kPa)
Master Catalog 125
Maximum Overpressure
For 0-150 psig
range: 525 psig
(3620 kPa)
For 50-300 psig
range: 400 psig
(2758 kPa)
For 100-400 psig
range: 475 psig
(3275 kPa)
For 50-500 psig
range: 525 psig
(3620 kPa)
Ambient Temperature
50 to 104°F (10 to 40°C)
Case and Cover
NEMA 1 Enclosures: case is galvanized steel; cover is plated and painted steel.
NEMA 3R Enclosures: case and cover are plated and painted steel.
Dimensions
(H x W x D)
NEMA 1 Enclosure: 3-1/4 x 4 x 2-1/16 in. (83 x 101 x 53 mm)
NEMA 3R Enclosure: 4-11/16 x 4-1/16 x 2-15/16 in. (104 x 104 x 74 mm)
Approximate
Shipping Weight
Individual (NEMA 1): 2.4 lb (1.08 kg);
Bulk pack (NEMA 1, multiples of 25 controls): 60 lb (27.2 kg)
Agency Listings
For information on specific items, contact the Refrigeration Application Engineering Group
at [phone].
Accessories
271-51 Universal Mounting Bracket (supplied with standard controls)
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these
specifications, contact the Refrigeration Application Engineering Group at [phone]. Johnson Controls shall not be liable for damages
resulting from misapplication or misuse of its products.
Building Technologies & Solutions
507 E. Michigan Street, Milwaukee, WI 53202
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