Penn A421ABC-02C Installation Manual Download Page 14

A421 Series Standard Electronic Temperature Controls Installation Instructions

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Ordering Information

See Table 6 to order a standard A421 Series Electronic 
Temperature Control. See Table 7 and Table 8 to order 
A99 sensors, mounting hardware, and other 
accessories used to install A421 controls. Contact your 
nearest Johnson Controls/PENN distributor or sales 
representative to order these products.        

             

Table 6:  A421 Series Standard Electronic Temperature Controls Selection Chart

Product Type

Description

A421ABC-02C

Line-Voltage Type 1 Electronic Temperature Control:

 Type 1 (NEMA), IP20 standard enclosure for 

DIN rail and surface-mount applications. Rated for 120/240 VAC. Includes an A99BB-200C temperature 
sensor with 6.6 ft (2.0 m) cable.

A421ABC-03C

Line-Voltage Type 1 Electronic Temperature Control:

 Type 1 (NEMA), IP20 standard enclosure for 

DIN rail and surface-mount applications. Rated for 120/240 VAC. Includes an A99BB-300C temperature 
sensor with 9.75 ft (3.0 m) cable.

A421ABC-04C

Line-Voltage Type 1 Electronic Temperature Control:

 Type 1 (NEMA), IP20 standard enclosure for 

DIN rail and surface-mount applications. Rated for 120/240 VAC. Includes an A99BB-400C temperature 
sensor with 13.1 ft (4.0 m) cable.

A421ABC-06C

Line-Voltage Type 1 Electronic Temperature Control:

 Type 1 (NEMA), IP20 standard enclosure for 

DIN rail and surface-mount applications. Rated for 120/240 VAC. Includes an A99BB-600C temperature 
sensor with 19.5 ft (6.0 m) cable.

A421AEC-01C

Line-Voltage Type 4X Electronic Temperature Control:

 Type 4X (NEMA), IP66 watertight enclosure 

for surface-mount applications. Rated for 120/240 VAC. Includes an A99BB-25C temperature sensor 
with 9-7/8 in. (0.25 m) cable.

A421AEC-02C

Line-Voltage Type 4X Electronic Temperature Control:

 Type 4X (NEMA), IP66 watertight enclosure 

for surface-mount applications. Rated for 120/240 VAC. Includes an A99BB-200C temperature sensor 
with 6.6 ft (2.0 m) cable.

A421GBF-02C

Low-Voltage Type 1 Electronic Temperature Control:

 Type 1 (NEMA), IP20 standard enclosure for 

DIN rail and surface-mount applications. Rated for 24 VAC Class 2, Safety Extra Low Voltage. Includes 
an A99BB-200C temperature sensor with 6.6 ft (2.0 m) cable.

A421GEF-01C

Low-Voltage Type 4X Electronic Temperature Control:

 Type 4X (NEMA), IP66 watertight enclosure 

for surface-mount applications. Rated for 24 VAC Class 2, Safety Extra Low Voltage. Includes an 
A99BB-25C temperature sensor with 9-7/8 in. (0.25 m) cable.

A421GEF-02C

Low-Voltage Type 4X Electronic Temperature Control:

 Type 4X (NEMA), IP66 watertight enclosure 

for surface-mount applications. Rated for 24 VAC Class 2, Safety Extra Low Voltage. Includes an 
A99BB-200C temperature sensor with 6.6 ft (2.0 m) cable.

Table 7:  A99 Temperature Sensors Selection Chart

1

 (Part 1 of 2)

Product Code

Description

A99BA-200C

PTC Temperature Sensor: 

Standard probe 2 in. (5.1 cm) with 6.6 ft (2.0 m) shielded PVC cable; 

Ambient operating temperature range: -40 to 212ºF (-40 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: -40 to 212ºF (-40 to 100ºC)

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 to 212ºF (-40 to 100ºC)

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 to 212ºF (-40 to 100ºC)

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 to 212ºF (-40 to 100ºC)

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 to 212ºF (-40 to 100ºC)

Summary of Contents for A421ABC-02C

Page 1: ...A421 control could lead to personal injury or property damage to the controlled equipment or other property additional precautions must be designed into the control system Incorporate and maintain ot...

Page 2: ...is connected to a standard A421 control the range of usable values is restricted by the control to 40 to 212 F 40 to 100 C See Wiring Technical Specifications and refer to the A99B Series Temperature...

Page 3: ...rness between the enclosure base and cover more than 180 Wiring WARNING Risk of Electric Shock Disconnect or isolate all power supplies before making electrical connections More than one disconnection...

Page 4: ...l does not provide any internal power to the TB2 terminals or relay contacts The A421 control simply energizes and de energizes the relay to open and close the contacts based on the On OFF temperature...

Page 5: ...d Wire Sizes TB1 24 VAC Models LN Low Voltage 24 VAC Control Power Common Connect the 24 VAC supply power to operate the control 28 AWG to 12 AWG 0 08 mm2 to 4 0 mm2 24V Low Voltage 24 VAC Control Pow...

Page 6: ...12 AWG 0 08 mm2 to 4 0 mm2 LNO Line Voltage SPDT Relay Normally Open Contact Connects controlled equipment to the Line Voltage Normally Open LNO contact on the SPDT relay When LC is closed to LNO the...

Page 7: ...and the green LED goes off The range of usable temperature values is 40 to 212 F 40 to 100 C in 1 increments Relay On Temperature On Select the temperature at which the output relay energizes the LC t...

Page 8: ...ode the effective On and OFF setback values On tBs and OFF tBs can be greater than the selected HtS value or less than the selected LtS value Temperature Setback tSb Select a temperature value for set...

Page 9: ...gh all of the available parameter values for the associated parameter code With the preferred parameter value displayed press MENU to save the value and go to the next parameter code screen Note If yo...

Page 10: ...Modes of Operation and Table 4 for more information regarding parameter codes usable parameter values and default values 1 With the Main screen displayed press MENU The LCD displays OFF which is the f...

Page 11: ...On value automatically shifts equal to the OFF value adjustment The OFF value can only be adjusted to values that maintain the entire control band within the restricted temperature adjustment range de...

Page 12: ...OFF value and return to the OFF code screen 5 Press and simultaneously to return to the Main screen Troubleshooting Fault Codes A421 Series controls display fault codes on the LCD as described in Tabl...

Page 13: ...ad from the output relay terminals b Ensure that the Parameter Adjustments jumper is installed so that access to adjust parameters is unrestricted c Reconnect the sensor leads and supply power to the...

Page 14: ...l Type 4X NEMA IP66 watertight enclosure for surface mount applications Rated for 120 240 VAC Includes an A99BB 200C temperature sensor with 6 6 ft 2 0 m cable A421GBF 02C Low Voltage Type 1 Electroni...

Page 15: ...erating temperature range 40 to 248 F 40 to 120 C 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 212 F 40 to 100 C...

Page 16: ...lass 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 A...

Page 17: ...rd A421 control model the range of displayed temperature values is 40 to 212 F or 40 to 100 C The performance specifications are nominal and conform to acceptable industry standards For application at...

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