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PENN Controls Products Catalog

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Basic and Advanced programming menu Provides two levels of parameter adjustment and control. You can set up advanced features in one menu and easily adjust basic parameters in the other menu. On and off temperature adjustment Select the temperature values at which the relay turns on and off, which automatically defines the Heating or Cooling mode of operation. Switch-activated temperature setback Shift the On or Off temperature by an adjustable setback value. When a user-supplied switch closes the binary input control circuit, the control operates at the defined setback temperatures. Adjustable anti-short cycle delay (ASd) Select the minimum time the output relay remains off before the next on cycle; avoid short cycling, hard starts, and nuisance overload outages on compressors and other inductive applications. Adjustable sensor offset Adjust the displayed temperature to the actual sensed temperature. Optional restricted adjustment mode Restrict the On or Off adjustment to your defined temperature range. Sensor Failure mode Select the relay On or Off state in the event of a sensor or sensor wire failure. Backlight brightness level Adjust the LCD backlight intensity. 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 68: A421 Series Standard Electronic Temperature Control with Power Cords Product code Description A421ABG-02C 120 VAC Type 1 Electronic Temperature Control with Dual Power Cords: Type 1 (NEMA), IP20 enclosure for DIN rail and surface-mount applications, with 6 ft (1.8 m) cord with 120 VAC grounded male plug and 6 ft (1.8 m) cord with 120 VAC grounded female outlet. Rated for 120 VAC. Includes an A99BB-200C temperature sensor with 6.6 ft (2.0 m) cable. A421ABJ-02C 120 VAC Type 1 Electronic Temperature Control with Piggyback Power Cord: Type 1 (NEMA), IP20 enclosure for DIN rail and surface-mount applications, with 6 ft (1.8 m) single power cord with 120 VAC combination male/female grounded piggyback plug. Rated for 120 VAC. Includes an A99BB-200C temperature sensor with 6.6 ft (2.0 m) cable. A421AEJ-01C 120 VAC Type 4X Electronic Temperature Control with Piggyback Power Cord: Type 4X (NEMA), IP66 watertight enclosure for surface-mount applications, with 6 ft (1.8 m) single power cord with 120 VAC combination male/female grounded piggyback plug. Rated for 120 VAC. Includes an A99BB-25C temperature sensor with 9 7/8 in. (0.25 m) cable. A421AEJ-02C 120 VAC Type 4X Electronic Temperature Control with Piggyback Power Cord: Type 4X (NEMA), IP66 watertight enclosure for surface-mount applications, with 6 ft (1.8 m) single power cord with 120 VAC combination male/female grounded piggyback plug. Rated for 120 VAC. Includes an A99BB-200C temperature sensor with 6.6 ft (2.0 m) cable. Table 69: A99 Temperature Sensors Product code 1 Description A99BA-200C Positive temperature coefficient (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: -40ºF to 212ºF (-40ºC to 100ºC) 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: -40ºF to 212ºF (-40ºC to 100ºC) 67 Refrigeration Products Catalog

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