A419ABC-1C | SINGLE STAGE TEMP CONTROL; W/DISP;HEATING/COOLING; 120VAC; RANGE -30 DEG F TO 212 DEG F; NEMA 1 HOUS | Johnson Controls (OBSOLETE)
Overview
Details for A419ABC-1C
SINGLE STAGE TEMP CONTROL; W/DISP;HEATING/COOLING; 120VAC; RANGE -30 DEG F TO 212 DEG F; NEMA 1 HOUS
Description
The A419 Series Controls are single-stage, electronic temperature controls with a single-pole, double-throw (SPDT) output relay. They feature a lockable front-panel touchpad for setup and adjustment, and an LCD for viewing the temperature and status of other functions. An LED indicates the controls’ output relay (On/Off) status. The A419 Controls are available in 24 VAC or 120/240 VAC models. The A419 Controls have heating and cooling modes, adjustable setpoint and differential, an adjustable anti-short cycle delay, and a temperature offset (setback) function. The setpoint range is -30 to 212°F (-34 to 100°C). The controls feature remote sensing capability and interchangeable sensors. The A419 Controls are available in either NEMA 1 high-impact plastic enclosure suitable for surface or DIN rail mounting, or NEMA 4X Watertight surface-mount enclosures.
Features
- low- and line-voltage models provide options for almost any refrigeration or HVAC control-voltage application
- easy-to-read LCD displays the sensed temperature and control-function status clearly, and custom icons on the display indicate the control and system status at a glance
- 30° (F° or C°) temperature differential adjustment range allows precise (1F° or C°) temperature differential settings that are much tighter than electromechanical controls
- Adjustable Anti-Short Cycle Delay (0 to 12 minutes in 1-minute increments) ensures that the output relay remains off for a user-set time delay, and helps avoid hard starts, nuisance overload outages, and unnecessary equipment wear
- Temperature Offset Function shifts the cut-in and cut-out setpoints by an adjustable offset when a user-installed, external switch closes the A419 control’s binary input circuit
- high-impact thermoplastic type NEMA 1 allows surface or snap-fit DIN rail mount; LEXAN® 950 high-impact thermoplastic type NEMA 4X enclosures allow watertight surface mount
- lockable front-panel touchpad allows easy setup and adjustment of the A419 control setpoint, differential, and other functions; a concealed jumper locks the touchpad to deter unauthorized adjustment of the control settings
Applications
The A419 can be used to control a wide variety of single-stage refrigeration or HVAC equipment. Typical applications include:
- freezer control in convenience stores
- reach-in coolers
- supermarket display cases for produce or meats
- restaurant or convenience store walk-in coolers
- boiler control
- compressor lockout (disables the compressor when temperature exceeds limits)
- condenser fan cycling
- pump control for cooling towers
- space and return air temperature
Specifications
Item Number | A419ABC-1C |
Brand | Johnson Controls |
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