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ManualsBrandsJohnson Controls ManualsA421 Series Temperature ControlsSingle Stage Digital Temperature Control w/ Off Cycle Defrost (120/240VAC)

Table Of Contents

Refrigeration Products Catalog, PUBL-5510
Product Catagories
Table of Contents
Code Number Index
Single-Stage Electromechanical Temperature Controls
- A11 Series Low Temperature Cutout Controls
- A19 Series Remote Bulb Control
- A19 Series High Range Temperature Control
- A19 Series Thermostat for Crop Drying
- A19 Series Hot Water Temperature Control (Well Immersion)
- A19 Temperature Control Less Enclosure (SPDT, Close Differential
- A19 Series Thermostat for Hazardous Locations
- A19 Series Coiled Bulb Space Thermostat
- A19 Thermostat for Portable Heaters (Chain Mount and Drop Cord Electrical Connection)
- A19 Thermostat for Portable Cooling Applications (Chain Mount and Drop Cord Electrical Connection)
- A19 Series Automatic Changeover with Strap-On Mounting
- A19D Series Surface Mounted Temperature Control
- A19 Flange Mounted Duct Thermostat
- A19 Series Fan or Cutout Control (Liquid Expansion Bulb)
- A19ANC-1 Temperature Control with Rainproof Enclosure
- A19 Agricultural/Industrial Thermostat with NEMA 4X Enclosure
- A19 Industrial Thermostat (Watertight and Dusttight)
- A19 Temperature Control with NEMA 4X Enclosure (Remote Bulb)
- A19 Water Chiller Control with Locked Cut-Out/Adjustable Cut-In
- A19 Defrost Duration and Fan Delay Control
- A25 Series Warm Air Limit Control with Manual Reset
- A70 Series Four-Wire, Two-Circuit Temperature Control
- A72 Series Two-Pole Heavy Duty Temperature Controls (Adjustable Differential)
- A72 Series Cooling Tower or Evaporative Condenser Controls (Single-Stage Temperature Control with Outdoor Enclosure)
- A72AA Coiled Bulb Space Thermostat (Cooling)
Single-Stage Electronic Temperature Controls
- A421 Series Electronic Temperature Controls
- A421 Series Electronic Temperature Controls with Integral Power Cord
- A421 Series Electronic Temperature Controls with Off-Cycle Defrost
- A421 Series Electronic Temperature Controls with Integral Cycle Timer
- MR Series Defrost Control Modules
- MR4PMUHV Electronic Temperature/Defrost Control with Relay Pack
Multi-Stage Electromechanical Temperature Controls
- A28 Series Two-Stage Temperature Control
- A28 Series Two-Stage Flange Mounted Duct Thermostat
- A28 Two-Stage Industrial Thermostat (Watertight and Dusttight)
- A28 Two-Stage Temperature Control with Weatherproof Enclosure
- A28 Two-Stage Agricultural Thermostat with NEMA 4X Enclosure
- A36 Series Four-Stage Remote Bulb Thermostats
- S26 Series Switching Subbase
- T22/T25/T26 Series Line Voltage Wall Thermostat (Heating, Cooling, or Heating and Cooling)
- Typical Wiring Diagrams and Electrical Ratings for Line Voltage Thermostats
- T23 Series Fan Coil Thermostat (with Fan and System Selectors)
- T28 Series Fan Coil Thermostat (with or without Fan Selector Switches)
- T46 Series Fan Coil Thermostat
Multi-Stage Electronic Temperature Controls
- MS Series Temperature Stage Control Modules
- MS Series Single-Stage Control Modules with Voltage Input
- MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack
Temperature Control Sensors and Accessories
- A99B Series Temperature Sensor
- Bulb Wells
- G Series Thermostat and Humidistat Guards
- T22, T25, T26, T28, T46, and T91 Accessories
- T91 Series Room Temperature Sensor
Standard Electromechanical Pressure Controls
- P10 Series Low Pressure Control
- P20 Series Air Conditioning/Pressure Cutout Control
- P29 Series Low Pressure Control with Time Delay
- P47 Series Steam Pressure Limit Control
- P67 Series Low Pressure Control
- P70, P72 Approximate Low Pressure Settings for Typical Applications
- P70, P72, and P170 Series Controls for Low Pressure Applications
- P70, P72, and P170 Series Controls for High Pressure Applications
- P70, P72, and P170 Series Controls for Dual Pressure Applications
Single-Stage Electronic Pressure Controls
- P470 Electronic Pressure Control with Display
Electromechanical Lube Oil and Differential Pressure Controls
- P28 Series Lube Oil Pressure Cutout Control with Time Delay
- P32 Series Sensitive Pressure Switch
- P45 Series Lube Oil Pressure Cutout Control with Time Delay
- P74 Series Differential Pressure Control
- P128 and P145 Series Lube Oil Pressure Controls
- P12 Series Differential Pressure Controls
Electronic Lube Oil and Differential Pressure Controls
- P545 Series Electronic Lube Oil Control
- CST29A Adaptor Block for Carlyle® Compressors
Pressure Sensors and Accessories
- Replacement Timing Relays for P28 and P29 Lube Oil Controls
- P100 Series Encapsulated Pressure Switches
- P499 Series Electronic Pressure Transducer
- R310A Series Current Sensing Switch
- Universal Mounting Bracket
- SEC99A UltraCap Armored Capillary
Refrigerant Sensors/Monitors
- RLD-H10PRO Refrigerant Leak Detector
- RLD Refrigerant Leak Detector Accessories and Replacement Parts
Liquid Level and Flow Controls
- F59 Series Sump Pump Switch
- F261 Series Fluid Flow Switches
- F262 Airflow Switch
- F263 Series Liquid Level Float Switches
- F61 and F62 Series Replacement Paddles
- F92 Series Air Volume Controls for Shallow Wells
- F93 Series Air Volume Controls for Deep Wells
Motor Speed Controls
- P266 Series Single-Phase Condenser Fan Speed Control
- P66/S66 Series Controls to P266 Series Controls Replacement Guide
- VFD68 Variable Frequency Drives
Valves and Valve Accessories
- V43/V243 Series Pressure-Actuated Water-Regulating Valves
- V46 Series Pressure Actuated Water Regulating Valve
- V46N Series Reverse Acting Valve
- V46 Series Valve Sizing Information-90% Open Method
- V46 Series Valve Dimensions
- V47 Series Temperature Actuated Modulating Valve
- V47N Series Reverse Acting Valve
- V48 Series Three-Way Water Regulating Valve
- V146 Series Two-Way Pressure-Actuated Water-Regulating Valves
- V148 Series Three-Way Pressure-Actuated Water-Regulating Valves
- V246 Series Two-Way Pressure-Actuated Water-Regulating Valves for High-Pressure Refrigerants
- V248 Series Three-Way Pressure-Actuated Water-Regulating Valves for High-Pressure Refrigerants
- STT Water Valve Renewal Kit for V46, V47, and V48 Series Valves
- Companion Flanges and Gaskets for V43, V46, and V47 Series Valves
Relays and Transformers
- Y63, Y64, Y65, Y66, and Y69 Series Transformers
System 450 Control Series
- System 450™ Series Modular Controls
- System 450™ Series Control Module with Network Communications
- System 450™ Reset Control Modules with Real-Time Clock and Relay Output
- System 450™ Control Modules with Analog Output
- System 450™ Control Modules with Relay Output
- System 450™ Control Module with Hybrid Analog Output
- System 450™ Expansion Modules with Analog Output
- System 450™ Expansion Modules with Relay Output
- System 450™ Power Module
- System 450™ Compatible Sensors, Transducers, and Accessories
Cross-Reference
- Ranco® Refrigeration Cross-Reference
- ALCO® Cross Reference
HVACR Product Offerings
Sales Contact Information

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Table of Contents

Single-Stage Electromechanical

Temperature Controls . . . . . . R-17

A11 Series Low Temperature Cutout

Controls . . . . . . . . . . . . . . . . . . . . . . . . R-17

A19 Series Remote Bulb Control . . . . . . . . R-19

A19 Series High Range Temperature

Control . . . . . . . . . . . . . . . . . . . . . . . . . R-21

A19 Series Thermostat for Crop Drying. . R-22

A19 Series Hot Water Temperature Control

(Well Immersion) . . . . . . . . . . . . . . . . . R-23

A19 Temperature Control Less Enclosure

(SPDT, Close Differential) . . . . . . . . . . R-24

A19 Series Thermostat for Hazardous

Locations . . . . . . . . . . . . . . . . . . . . . R-25

A19 Series Coiled Bulb Space

Thermostat. . . . . . . . . . . . . . . . . . . . . . R-26

A19 Thermostat for Portable Heaters

(Chain Mount and Drop Cord

Electrical Connection) . . . . . . . . . . . . . R-27

A19 Thermostat for Portable Cooling

Applications (Chain Mount and

Drop Cord Electrical Connection) . . . . R-28

A19 Series Automatic Changeover with

Strap-On Mounting. . . . . . . . . . . . . . . . R-29

A19D Series Surface Mounted

Temperature Controls . . . . . . . . . . . . R-30

A19 Flange Mounted Duct Thermostat . . . R-31

A19 Series Fan or Cutout Control

(Liquid Expansion Bulb) . . . . . . . . . . . . R-32

A19 Temperature Control with Rainproof

Enclosure . . . . . . . . . . . . . . . . . . . . . R-33

A19 Agricultural/Industrial Thermostat with

NEMA 4X Enclosure . . . . . . . . . . . . . . R-34

A19 Industrial Thermostat (Watertight and

Dusttight) . . . . . . . . . . . . . . . . . . . . . . . R-35

A19 Temperature Control with NEMA 4X

Enclosure (Remote Bulb). . . . . . . . . . R-36

A19 Water Chiller Control with Locked

Cut-Out/Adjustable Cut-In . . . . . . . . . . R-37

A19 Defrost Duration and Fan Delay

Control . . . . . . . . . . . . . . . . . . . . . . . . R-38

A25 Series Warm Air Limit Control with

Manual Reset . . . . . . . . . . . . . . . . . . . R-39

A70 Series Four-Wire, Two-Circuit

Temperature Control . . . . . . . . . . . . . R-40

A72 Series Two-Pole Heavy Duty

Temperature Controls

(Adjustable Differential) . . . . . . . . . . . . R-41

A72 Series Cooling Tower or Evaporative

Condenser Controls (Single-Stage

Temperature Control with

Outdoor Enclosure) . . . . . . . . . . . . . . . R-42

A72AA Coiled Bulb Space Thermostat

(Cooling) . . . . . . . . . . . . . . . . . . . . . . . R-43

Single-Stage Electronic

Temperature Controls . . . . . . R-44

A421 Series Electronic Temperature

Controls . . . . . . . . . . . . . . . . . . . . . . . R-44

A421 Series Electronic Temperature

Controls with Integral Power Cord . . . R-47

A421 Series Electronic Temperature

Controls with Off-Cycle Defrost . . . . . R-50

A421 Series Electronic Temperature

Controls with Integral Cycle Timer . . . R-53

MR Series Defrost Control Modules . . . . . R-56

MR4PMUHV Electronic

Temperature/Defrost Control with

Relay Pack . . . . . . . . . . . . . . . . . . . . . R-58

Multi-Stage Electromechanical

Temperature Controls . . . . . . R-59

A28 Series Two-Stage Temperature

Control. . . . . . . . . . . . . . . . . . . . . . . . . R-59

Two Stage Temperature Control . . . . . . . . R-59

A28 Series Two-Stage Flange Mounted

Duct Thermostat . . . . . . . . . . . . . . . . . R-61

A28 Two-Stage Industrial Thermostat

(Watertight and Dusttight) . . . . . . . . . . R-62

A28 Two-Stage Temperature Control with

Weatherproof Enclosure . . . . . . . . . . . R-63