Description
The PENN A19D Series Surface Mounted Temperature Controls are reliable, durable On/Off temperature controls featuring line-voltage single-pole, double-throw (SPDT) switches. These controls are primarily designed for fluid piping applications and include two adjustable mounting straps for direct mounting onto a pipe. For detailed product application information, refer to the A19D Series Surface Mounted Temperature Controls Product Bulletin (LIT-125070).
Image shows a single A19D Series Surface Mounted Temperature Control unit. It is a dark gray, rectangular enclosure with a black adjustment knob on its top surface. To the right of the unit are two metallic mounting straps designed to attach the control to a pipe.
Features
- SPDT switch action provides either high or low temperature detection.
- Sealed, dust-protected switch ensures reliable and durable On/Off control for commercial and industrial applications.
- Color-coded electrical terminals simplify wiring.
- Sensing element is insulated from the control case, minimizing the effects of ambient temperature on the control setpoint.
- Convertible range adjuster kit offers knob, screwdriver, or concealed adjustment options.
- Multi-position mounting capability allows installation in any position on horizontal, vertical, or angled pipes.
- NEMA 1 enclosure provides protection against contact with electrical components and terminals from incidental contact.
Applications
Typical applications for the A19D Series controls include high temperature detection on boiler applications and low temperature detection on unit heater coils.
Switch Action
Diagram illustrating SPDT switch action. Label 'At Setpoint' indicates Y-R is open and B-R is closed. Label 'On Increase' indicates Y-R closes and B-R opens. Terminals are labeled Y, R, and B.
Repair Information
If an A19D Series Surface Mounted Temperature Control fails to operate within its specifications, the unit should be replaced. For a replacement control, contact the nearest Johnson Controls representative.
Selection Chart
| Product Code Number | Description |
|---|---|
| A19DAC-1C | 100 to 240°F Temperature Range and Scale, 10 F° (± 2.8 F°) Differential, Visible Range Scale |
| A19DAC-9C | 40 to 120°C Temperature Range and Scale, 6 C° (± 1.0 C°) Differential, Visible Range Scale |
| A19DAC-10C | 40 to 120°C Temperature Range and Scale, 6 C° (± 1.0 C°) Differential, Concealed Range Scale |
| A19DAC-12C | 100 to 240°F Temperature Range and Scale, 10 F° (± 2.8 F°) Differential, Concealed Range Scale |
| A19DAF-2C | 200 to 240°F Temperature Range and Scale, 3-1/2 F° (± 2.0 F°) Differential, Concealed Range Scale |
Technical Specifications
| Specification | Details |
|---|---|
| Product Code Number | A19DAC: SPDT switch, standard differential A19DAF: SPDT switch, narrow differential |
| Adjustable Temperature Range | A19DAC: 100 to 240°F or 40 to 120°C A19DAF: 200 to 240°F (95 to 120°C) |
| Fixed Temperature Differential | A19DAC: 10 F° or 6.0 C° A19DAF: 3-1/2 F° (1.9 C°) |
| Maximum Ambient Operating Temperature | Controller Housing: 140°F (60°C) Sensor Element: 250°F (121°C) |
| Switch Contact Action | SPDT, Snap Acting, Enclosed Dust Protected Pennswitch Red to Yellow Terminal Contacts Close on Temperature Increase Red to Blue Terminal Contacts Open on Temperature Increase |
| Terminal Screws | No. 8-32 x 1/4 in. Binder Head with Cup Washers |
| Electrical Ratings |
A19DAC: Standard Differential Motor Rating VAC: 120, 240 Full Load Amperes: 10.0, 6.0 Locked Rotor Amperes: 60.0, 36.0 Non-Inductive Amperes: 10.0, 6.0 Pilot Duty: 125 VA, 24 to 277 VAC A19DAF: Narrow Differential Motor Rating VAC: 120, 240 Full Load Amperes: 6.0, 3.4 Locked Rotor Amperes: 36.0, 20.4 Non-Inductive Amperes: 6.0, 3.4 Pilot Duty: 125 VA, 24 to 277 VAC |
| Enclosure | NEMA Type 1 General Purpose; Cold Rolled Steel, Gray Baked Enamel |
| Mounting | Clamp-On (Straps Included) |
| Shipping Weight | 1-1/5 lb (.54 kg) |
| Compliance | UL Guide No. XAPX, File E6688 CSA Class No. 4813 02, File LR948 C-Tick |
The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the nearest Johnson Controls representative. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc.
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