A421 Series Electronic Temperature Controls with Off-Cycle Defrost Installation Instructions
17
Technical Specifications
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 to 248ºF (-40 to 120ºC)
A99BC-300C
1
PTC Temperature Sensor: Standard probe 2 in. (5.1 cm) with 9.8 ft (3.0 m) high-temperature silicon
cable; Ambient operating temperature range: -40 to 248ºF (-40 to 120ºC)
A99BC-500C
1
PTC Temperature Sensor: Standard probe 2 in. (5.1 cm) with 16.4 ft (5.0 m) high-temperature silicon
cable; Ambient operating temperature range: -40 to 248ºF (-40 to 120ºC)
A99BC-1500C
1
PTC Temperature Sensor: Standard probe 2 in. (5.1 cm) with 49.2 ft (15.0 m) high-temperature silicon
cable; Ambient operating temperature range: -40 to 248ºF (-40 to 120ºC)
A99CB-200C PTC Temperature Sensor: Extended probe 6 in. (15.2 cm) with 6.6 ft (2.0 m) PVC cable;
Ambient operating temperature range: -40 to 212ºF (-40 to 100ºC)
A99CB-600C PTC Temperature Sensor: Extended probe 6 in. (15.2 cm) with 19.7 ft (6.0 m) PVC cable;
Ambient operating temperature range: -40 to 212ºF (-40 to 100ºC)
1. When any A99 Series Temperature Sensor is connected to a standard A421 control model, the range of displayed
temperature values is -40 to 212ºF or -40 to 100ºC.
Table 7: Accessories for the A421 Series Temperature Controls
Product Code Description
BKT287-1R 12 in. (305 mm) long DIN rail section
BKT287-2R 36 in. (914 mm) long DIN rail section
PLT344-1R Two End Clamps for DIN rail sections
A99-CLP-1 Surface Mounting Clip for A99B and A99C Series Temperature Sensors
SHL10-603R Sun Shield for A99B and A99C Series Temperature Sensors
BOX10A-603R PVC Enclosure for A99B and A99C Series Temperature Sensors
WEL11A-601R Immersion well for applying sensor in fluid applications
Table 6: A99 Temperature Sensors Selection Chart
1
(Part 2 of 2)
Product Code Description
Table 8: A421 Series Electronic Temperature Controls
Power Consumption 1.8 VA Maximum
Supply Power 110/120 or 208/230/240 VAC, 50/60 Hz
Ambient Conditions Operating: Type 1 Models: -40 to 150°F (-40 to 66°C), 0 to 95% RH Non-condensing
Type 4X Models: -40 to 140°F (-40 to 60°C), 0 to 95% RH Non-condensing
Shipping and Storage: All Models: -40 to 185°F (-40 to 85°C), 0 to 95% RH Non-condensing
Temperature Control
Range
-40 to 212°F or -40 to 100°C
Input Signal 1,035 ohm at 77F (25C) for A99 PTC temperature sensors
Accuracy Combined accuracy of A421 control and A99 sensor: ±2F (±1C) between 5F and 167F
(-15C and 75C); diverging to ±3F (±2C) at -40F (-40C) and ±3F (±2C) at 212F (100C)
Sensor Offset Range ±5ºF or ±3ºC
Enclosure Material Type 1, IP20 High-Impact Thermoplastic or
Type 4X, IP66 Watertight, Corrosion-Resistant, High-Impact Thermoplastic
Compliance North America: cULus Listed; UL 60730, File E27734, Vol. 1; FCC Compliant to
CFR47, Part 15, Subpart B, Class B
Industry Canada (IC) Compliant to Canadian ICES-003, Class B limits
Europe: CE Mark – Johnson Controls, Inc. declares that this product is in compliance with the
essential requirements and other relevant provisions of the EMC Directive; Low Voltage Directive.
Australia: Regulatory Compliant Mark (RCM)
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