Johnson Controls A19QSC-1C, A19QSC-2C, A19QSC-3C, A19QSC-4C Data Sheet
Single-Stage Electromechanical Temperature Controls |
Code No. LIT-1900403 |
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A19 Temperature Control with NEMA 4X Enclosure (Remote Bulb)
Description |
Features |
The A19 Temperature Control is a remote bulb temperature control with a watertight NEMA 4X enclosure.
Refer to the A19 Series Hot Water Heating Controls Well Immersion Product Bulletin (LIT-125025) for important product application information.
Applications
•cooling tower sump heaters
•control of heating or ventilating equipment
•watertight gasketed thermoplastic enclosure that meets NEMA 4X specifications
•concealed setpoint adjustment
Repair Information
If the A19 Temperature Control with NEMA 4X Enclosure (Remote Bulb) fails to operate within its specifications, replace the unit. For a replacement control, contact the nearest Johnson Controls® representative.
Technical Specifications
Maximum ambient temperature: 140°F (60°C).
Electrical Ratings |
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A19QSC Temperature Control |
Motor Ratings VAC |
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120 |
208 |
240 |
277 |
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AC Full Load Amperes |
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16.0 |
9.2 |
8.0 |
— |
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AC Locked Rotor Amperes |
96.0 |
55.2 |
48.0 |
— |
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Non-Inductive |
When connected |
22.0 |
22.0 |
22.0 |
22.0 |
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Amperes |
Single-Pole, Single-Throw |
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(SPST) |
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When connected |
16.0 |
9.2 |
8.0 |
6.9 |
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Single-Pole, Double-Throw |
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(SPDT) |
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Pilot Duty |
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125 VA, 24 to |
600 VAC |
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Selection Chart
Product |
Switch |
Range |
Differential |
Bulb and Capillary |
Bulb Well No. |
Range |
Maximum Bulb |
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Code |
Action |
°F (°C) |
F° (C°) |
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(Order |
Adjuster |
Temperature |
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Number |
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Separately) |
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°F (°C) |
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A19QSC-1C |
SPDT |
0 to 150 (-18 to 66) |
5±2 (2.82 ±1.11) fixed |
3/10 x 2-1/2 in.; 10 ft. capillary |
WEL11A-601R |
Concealed |
190 |
(88) |
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screwdriver |
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A19QSC-2C |
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100 to 250 (38 to 121) |
6±2 (32 ±1.11) fixed |
3/10 x 2-3/8 in.; 10 ft capillary |
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290 |
(143) |
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slot |
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A19QSC-3C |
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200 to 350 (93 to 176) |
5±2 (2.82 ±1.11) fixed |
3/10 x 2-1/4 in.; 10 ft capillary |
— |
390 |
(199) |
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A19QSC-4C |
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0 to 190 (-18 to 88) |
5±2 (2.82 ±1.11) fixed |
3/10 x 2-1/2 in.; 20 ft capillary |
WEL11A-601R |
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190 |
(88) |
The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult th Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc.
R-36
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