A421GEF-01C | Single Stage Temp Controller with Sensor, 24VAC, NEMA4X, 9" lead, -40 to 212F, HTG/CLG | Johnson Controls

NEMA4X 24VAC TEMP CONTROL [sku] from Johnson Controls is a robust and reliable temperature control solution designed to withstand harsh industrial environments. Enclosed in a NEMA4X enclosure, this device provides exceptional protection against water, dust, and corrosion, making it ideal for outdoor or indoor applications where durability is paramount. Its 24VAC power supply ensures compatibility with various industrial power systems. Key features include: NEMA4X enclosure for superior protection against harsh conditions 24VAC power supply for compatibility with industrial power systems Compact design for space-saving installation Easy-to-use interface for convenient operation Wide operating temperature range for versatility in diverse environments Applications: Industrial automation systems HVAC systems Manufacturing facilities Outdoor enclosures Petrochemical plants With its durable construction, reliable performance, and versatile applications, the NEMA4X 24VAC TEMP CONTROL is an excellent choice for industrial engineers and maintenance professionals seeking a dependable temperature control solution. Shop now ! Our HVAC supply store offers the best prices and fast shipping for all your product needs.

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 voltage 120 or 240 VAC models, which provide options for most refrigeration and HVAC applications.

The A421 controls provide heating or cooling control, sensor offset, temperature setback, adjustable anti-short cycle delay, and a restricted user adjustment mode. The temperature units can be displayed in °F or °C.

The temperature adjustment range is -40 to 212°F or -40 to 100°C. The A421 controls are available in Type 1, IP20 high-impact plastic enclosures suitable for surface or DIN rail mounting and Type 4X, IP66 watertight, corrosion-resistant surface mount enclosures.

Refer to the A421 Series Electronic Temperature Controls Product Bulletin (LIT-12011972) for important product application information.

Applications

The A421 Electronic Temperature Control can be used to control a wide variety of single-stage refrigeration or HVAC equipment.

Sample temperature control applications include:

• temperature monitoring and alarming
• on/off control of boilers and chillers
• boiler and chiller pump control
• heating and cooling control
• cooling tower fan control based on water temperature
• supply, makeup, and mixed air temperature control
• temperature actuated valve control
• supply and makeup air damper and fan control
• condenser fan control based on condenser temperature.