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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-86
P20 Series Air Conditioning/Pressure Cutout Control
Description
The P20 Series are field replacement high and
low pressure controls for non-corrosive
refrigerants. They include a dust-tight contact
unit with quick connect connectors, and a
36 in. or 42 in. capillary with 1/4 in. sweat
section. The setpoint is screwdriver
adjustable.
Refer to the P20, P21 Series Air Conditioning
Limit Controls Product Bulletin (LIT-125415)
for important product application information.
Control action is identified by
colored sealing compound or terminal markings on switch.
p20spst.eps
SPST
Construction
SPDT
Construction
Seal
White: Open Low Control
Red: Open High Control
Red
Red
Blue
(Open High)
Blue
(Open High)
Yel l ow
(Open Low)
Yel l ow
(Open Low)
Low Range
High Ranges
Features
accurate repeatability
compact size
trip-free manual reset
Applications
air conditioning high/low pressure control
refrigeration high/low pressure control
head pressure control
Repair Information
If the P20 Series Air Conditioning/Pressure
Cutout Control fails to operate within its
specifications, replace the unit. For a
replacement control, contact the nearest
Johnson
Controls®
representative.
Selection Chart
Product
Code
Number
1
1. Mounting bracket supplied on all models.
Pressure
Connections
Switch
Action
Range
psi (kPa)
Differential
psi (kPa)
Factory Setting, psig (kPa) Max. Bellows
Pressure
psig (kPa)
Max.
Temp.
Opens Closes
P20BB-1C
2
2. Replaces Ranco® G20-4412; Robertshaw® 3126-216, 3160-212
36 in. capillary
1/4 in. sweat tube
Open on fall 7 to 150 (48 to 1,034) Manual reset 40 (276) Lockout 250 (1,724) 140°F
P20DB-1C
3
3. Replaces Ranco G23-5253; Robertshaw 3127-220, 3161-205; Honeywell® P430X-1250, 1268, 1292, 1300
Open on rise 100 to 425 (690 to 2,930) Manual reset 400 (2,758) Lockout 450 (3,103)
P20GB-1C 42 in. capillary
1/4 in. sweat tube
Single-Pole,
Double-Throw
(SPDT)
Open on rise
100 to 425 (690 to 2,930) Manual reset 360 (2,482) Lockout 450 (3,103)
P20EB-1C
4
4. Replaces Ranco G20-4050; Robertshaw 3126-116, 3160-012, 3160-014; Honeywell P431X-1092, 1100
36 in. capillary
1/4 in. sweat tube
SPDT 7 to 150 (48 to 1,034) 30 (172) fixed 40 (276) 70 (448) 250 (1,724)
P20EB-18C 42 in. capillary
1/4 in. sweat tube
SPDT 7 to 150 (48 to 1,034) 22 (152) fixed 15 (103) 37 (255) 250 (1,724)
P20EB-2C
5
5. Replaces Ranco G23-5052; Robertshaw 3127-140, 3127-414, 3161-009; Honeywell P430X, 1235, 1243, 1276, 1284
36 in. capillary
1/4 in. sweat tube
SPDT 100 to 425 (690 to 2,930) 75 (483) fixed 400 (2,758) 324 (2,275) 450 (3,103)
P20DB-1 Air Conditioning/
Pressure Cutout Control
Standard Electromechanical Pressure Controls
Code No. LIT-1927180