Penn - A421 Temperature Controller Single-stage SPDT

Title:
Penn - A421 Temperature Controller Single-stage SPDT (24V)
Images
Penn - A421 Temperature Controller Single-stage SPDT
Penn - A421 Temperature Controller Single-stage SPDTPenn - A421 Temperature Controller Single-stage SPDTPenn - A421 Temperature Controller Single-stage SPDT - Mount PointsPenn - A421 Temperature Controller Single-stage SPDT - Bottom
Price: 
$87.91
SKU:
A421GBF-02C
Product Dimensions: 
5 × 2.5 × 2.5 in
Product Weight: 
0.5 lb
Product Family: 

Description 

The A421 Series controls are single stage, electronic temperature controls with a single-pole, double-throw (SPDT) output relay. The controls feature an adjustable backlit LCD for viewing the temperature and status of other functions, and a three-button touchpad for setup and adjustment. An LED indicates the On/Off status of the output relay.

The A421 controls are available in low voltage 24 VAC and high voltge 120 or 240 VAC models, which provide options for most refrigeration and HVAC applications.

Features:

  • Features A421 Standard model
  • Control Front Panel LCD:
    Displays the temperature, parameters, and status and allows you to adjust the backlight intensity for ambient light conditions. Custom icons display the system and control status.
  • Basic and Advanced Programming Menu:
    Provides two levels of parameter adjustment and control setup, allowing you to set up advanced features in one menu and easily adjust basic parameters in the other menu.
  • On/Off Temperature Adjustment:
    Allows you to select the temperature values at which the relay turns On and Off, which automatically defines the Heating or Cooling mode of operation.
  • Switch-Activated Temperature Setback:
    Allows you to shift the On/Off temperature by an adjustable setback value. When a user-supplied switch closes the binary input control circuit, the control operates at the defined setback temperatures.
  • Adjustable Anti-Short Cycle Delay:
    Allows you to select the minimum time the output relay remains off before the next on cycle; avoiding short cycling, hard starts, and nuisance overload outages on compressors and other inductive applications.
  • Adjustable Sensor Offset:
    Allows you to adjust the displayed temperature to the actual sensed temperature.
  • Optional Restricted Adjustment Mode:
    Allows you to restrict the On/Off adjustment to your defined temperature range.
  • Sensor Failure Mode:
    Allows you to select the relay On/Off state in the event of a sensor or sensor wire failure.
  • Backlight Brightness Level:
    Allows you to adjust the LCD backlight intensity.
  • Extra Features A421 Defrost model
  • Off-Cycle Defrost:
    Allows you to shut off the refrigeration system for defined defrost time interval and frequency. You can also start or stop a manual only defrost offcycle.
  • Extra Features A421 Timer model
  • Free-Cooling and Ventilation:
    Allows you to adjust for free-cooling and timed-ventilation, and provides over-cooling protection.

Specifications 

  • Power Supply: 24VAC
  • Temp Range: 212F Max to -40F Min
  • Stages: 1
  • Probe Length: 2m / 6' 6"
  • Enclosure Type: NEMA-1
  • Replacement For: A419GBF-1C

Manufacturer 

Johnson Controls

Johnson Controls is a world leader in smart buildings, creating safe, healthy and sustainable spaces.

For nearly 140 years, we’ve made buildings better and now we’re transforming them again with our award-winning digital technologies and services. We’re using artificial intelligence and data driven solutions to give you deeper insight into your building’s health, sustainability and performance. It’s changing the way we design, operate and maintain indoor environments and driving to a new era of autonomous buildings.

We deliver the blueprint of the future for industries such as healthcare, schools, data centers, airports, stadiums, hotels, manufacturing and beyond through OpenBlue, our comprehensive suite of connected solutions.

Johnson Controls offers the world’s largest portfolio of building technology, software and services. Supported by a team of more than 100,000 dedicated employees working across 150 countries, we’re helping customers achieve their sustainability goals and power their mission.

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