A421GBF-02C | Single Stage Temp Controller with Sensor, 24VAC, NEMA1, 6' 7" lead, -40 to 212F, HTG/CLG | JOHNSON

Electronic Single Stage Temperature Control: The JOHNSON A421GBF-02C Electronic Single Stage Temperature Control is designed for industrial and commercial applications. It features a 24 Vac voltage, Ul Type 1 construction, and an IP20 enclosure rating for durability and reliability. With a 100VA capacity and a -40°F to 212°F temperature range, this temperature control provides precise temperature management in various environments. Versatile Applications: This temperature control is ideal for HVAC systems, refrigeration units, and other temperature-controlled applications. Its compact design allows for easy installation in tight spaces, while its 2m (6'-6") temperature sensor ensures accurate temperature readings. Replaces A419GBF-1C: The A421GBF-02C replaces the A419GBF-1C temperature control, providing a reliable and compatible upgrade for existing systems. Our HVAC supply store: For the best prices and fast shipping on industrial supplies, choose Our HVAC supply store. We offer a wide selection of temperature controls and other essential components for industrial and commercial applications. Trust Our HVAC supply store for all your industrial supply 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.

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.