Table 6: A99 Temperature Sensors selection chart
Product code
Description
A99BC-300C
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: -40ºF to 248ºF (-40ºC to 120ºC)
A99BC-500C
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: -40ºF to 248ºF (-40ºC to 120ºC)
A99BC-1500C
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: -40ºF to 248ºF (-40ºC 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: -40ºF to 212ºF
(-40ºC 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: -40ºF to 212ºF
(-40ºC to 100ºC)
1
When any A99 Series Temperature Sensor is connected
to a standard A421 Control model, the range of displayed
temperature values is -40ºF to 212ºF or -40ºC to 100ºC.
Table 7: Accessories
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 Copper and brass immersion well for applying
sensor in fluid applications
TE-6300W-102 Stainless steel immersion well for applying
A99 sensors in fluid applications. (A99CB Type
sensors with extended probe are recommended
for use with this immersion well.)
Technical specifications
Table 8: A421 Series Electronic Temperature Controls
Technical Specifications
Specification Description
Power
consumption
1.8 VA maximum
Supply power 110/120 or 208/230/240 VAC, 50/60 Hz
Table 8: A421 Series Electronic Temperature Controls
Technical Specifications
Specification Description
Ambient
conditions
Operating:
Type 1 models: -40°F to 150°F (-40°C
to 66°C), 0% to 95% RH noncondensing
Type 4X models: -40°F to 140°F (-40°C to 60°C),
0% to 95% RH noncondensing
Shipping and storage:
All models: -40°F to 185°F
(-40°C to 85°C), 0% to 95% RH noncondensing
Temperature
control range
-40°F to 212°F or -40°C to 100°C
Input signal
1,035 ohm at 77°F (25°C) for A99 PTC
temperature sensors
Accuracy
Combined accuracy of A421 Control and A99
sensor: ±2°F (±1°C) between 5°F and 167°F(-15°C
and 75°C); diverging to ±3°F (±2°C) at -40°F
(-40°C) and ±3°F (±2°C) at 212°F (100°C)
Sensor offset
range
±5ºF or ±3ºC
Enclosure
material
Type 1, IP20 high-impact thermoplastic or
Type 4X, IP66 watertight, corrosion-resistant,
high-impact thermoplastic
Note
: To maintain type 4X / IP66 rating, tighten
enclosure screws to: 10 – 12 in·lb.
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 declares
that this product is in compliance with the
essential requirements and other relevant
provisions of the EMC Directive; Low Voltage
Directive.
Australia and New Zealand:
RCM, Australia/NZ
Emissions Compliant
Table 9: A421 Temperature Control Output Relay
Contacts electrical ratings
A421
Agency and file
UL 60730 and EN 60730
Applied AC voltage at
50/60 Hz
120 VAC
208 VAC
240 VAC
Horsepower LC/LNO
(LC/LNC)
1 (0.25)
1 (0.3)
1 (0.5)
Full load amperes LC/
LNO (LC/LNC)
16 (5.8)
9.2 (4)
8 (4.9)
Locked rotor amperes
LC/LNO (LC/LNC)
96 (34.8)
55.2 (24)
48 (29.4)
Resistive amperes LC/
LNO (LC/LNC)
15 (10)
10 (10)
10 (10)
Pilot duty VA LC/LNO
(LC/LNC)
125 (125)
125 (125)
125 (125)
Table 10: UL conformity declaration information
Information
Description
Purpose of control
Sensing control / Operating control
A421 Series Electronic Temperature Controls with Cycle Timer Installation Guide
12
