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PENN Controls Products Catalog

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Switch-activated override Override the control using a switch connected to the binary input. Closing the switch turns the relay on. Normal control action is resumed when the switch is opened. Adjustable sensor offset Adjust the displayed temperature to the actual sensed temperature. Optional restricted adjustment mode Restrict the On/Off adjustment to your defined temperature range. Sensor failure mode Run the control continuously in the event of a sensor or sensor wire failure or to shut it down. Backlight brightness level Adjust the brightness of the backlighting of the LCD screen. The backlight brightness level is applied during normal operation. When you set up or adjust the parameters, the LCD automatically goes to the brightest level. Ordering information Contact your nearest Johnson Controls or PENN distributor or sales representative to order sensors, mounting hardware, and other accessories used to install A421 Controls. Contact your local Johnson Controls or PENN representative for more information on options available for high- volume purchase models with specific application requirements. Selection charts Table 76: A421 Series Electronic Temperature Control with Cycle Timer Product code Description A421ABT-02C Line-Voltage Type 1 Electronic Temperature Control with Cycle Timer: Type 1 (NEMA), IP20 standard enclosure for DIN rail and surface- mount applications. Rated for 120/240 VAC. Includes A99 positive temperature coefficient (PTC) sensor with 6.6 ft (2.0 m) cable. A421AET-01C Line-Voltage Type 4X Electronic Temperature Control with Cycle Timer: Type 4X (NEMA), IP66 watertight enclosure forsurface-mount applications. Rated for 120/240 VAC. Includes an A99BB-25C temperature sensor with 9 7/8 in. (0.25 m) cable. Table 77: A99 Temperature Sensors Product code 1 Description A99BA-200C PTC temperature sensor: Standard probe 2 in. (5.1 cm) with 6.6 ft (2.0 m) shielded polyvinyl chloride (PVC) cable; ambient operating temperature range: -40°F to 212°F (-40°C to 100°C) A99BB-25C PTC temperature sensor: Standard probe 2 in. (5.1 cm) with 9 7/8 in. (0.25 m) PVC cable; ambient operating temperature range: -40°F to 212°F (-40°C to 100°C) A99BB-200C PTC temperature sensor: Standard probe 2 in. (5.1 cm) with 6.6 ft (2.0 m) PVC cable; ambient operating temperature range: -40°F to 212°F (-40°C to 100°C) A99BB-300C PTC temperature sensor: Standard probe 2 in. (5.1 cm) with 9.8 ft (3.0 m) PVC cable; ambient operating temperature range: -40°F to 212°F (-40°C to 100°C) A99BB-400C PTC temperature sensor: Standard probe 2 in. (5.1 cm) with 13.1 ft (4.0 m) PVC cable; ambient operating temperature range: -40°F to 212°F (-40°C to 100°C) A99BB-600C PTC temperature sensor: Standard probe 2 in. (5.1 cm) with 19.7 ft (6.0 m) PVC cable; ambient operating temperature range: -40°F to 212°F (-40°C to 100°C) A99BC-25C 1 PTC temperature sensor: Standard probe 2 in. (5.1 cm) with 9 7/8 in. (0.25 m) high-temperature silicon cable; ambient operating temperature range: -40°F to 248°F (-40°C to 100°C) A99BC-100C 1 PTC temperature sensor: Standard probe 2 in. (5.1 cm) with 3.3 ft (1.0 m) high-temperature silicon cable; ambient operating temperature range: -40°F to 248°F (-40°C to 120°C) 73 Refrigeration Products Catalog

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