A419AEC-1C | ELECTRONIC TEMP CONTROL; NEMA 4X CONTROL W/DISPLAY HTG/CLG -30TO212F 120/240 VAC W/SENSR 9IN LEAD | Johnson Controls (OBSOLETE)

ELECTRONIC TEMP CONTROL; NEMA 4X CONTROL W/DISPLAY HTG/CLG -30TO212F 120/240 VAC W/SENSR 9IN LEAD

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.

Refer to the A419 Series Electronic Temperature Controls with Display and NEMA 1 or NEMA 4X Watertight Enclosures Product Bulletin (LIT-125188) for important product application information.

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