Air-Pressure-Actuated HVAC Switches
Often used to detect clogged air filters and iced air conditioner coils, these switches sense small changes in pressure between two points in your duct.
| Setpoint, in. of H2O | Accuracy, in. of H2O | Temperature Range, °F | Current | Electrical Connection Type | Switch Type | Max. Pressure, psi | Low Pressure Side Connection | High Pressure Side Inside Connection | High Pressure Side Outside Connection | Each | |
Diaphragm Sensor | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.05-5 | 0.025 | -40° to 165° | 2.9 A @ 240 V AC 5.8 A @ 120 V AC | Hardwire | SPDT | 1 | 1/8 NPT Female | 1/8 NPT Female | 1/2 NPSM | 000000 | 0000000 |
| 0.05-5 | 0.04 | -40° to 165° | 4.9 A @ 240 V AC 9.8 A @ 120 V AC | Hardwire | SPDT | 1 | 1/8 NPT Female | 1/8 NPT Female | 1/2 NPSM | 000000 | 000000 |
Airflow-Actuated HVAC Switches
Use this switch to sense changes in airflow velocity in duct. The paddle extends into the duct and actuates the switch when airflow reaches the setpoint. Switch is rated NEMA 3R for protection from dirt, falling liquids, and light splashing.
Paddle | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Setpoint, fpm | Temperature Range, °F | Current | Electrical Connection Type | Switch Type | For Conduit Trade Size | Knockout Dia. | Material | Ht. | Wd. | For Use Outdoors | Environmental Rating | Specifications Met | Each | |
Paddle Sensor | ||||||||||||||
| 350-500 | 32° to 104° | 10 A @ 240 V AC 16 A @ 120 V AC | Screw Terminal | SPDT | 1/2 | 7/8" | Stainless Steel | 6 7/8" | 3 1/8" | Yes | IP43, NEMA 3R | UL Listed, C-UL Listed, CE Marked | 0000000 | 0000000 |
HVAC Flame Detectors
Replace damaged flame detectors in HVAC equipment, such as furnaces and boilers, as well as some water heaters and ovens. These flame detectors work with a wide range of manufacturers since you can bend the rod and cut it to fit in your ignition system. However, you shouldn’t bend the rod without the included protective sleeve. Touching or marring the rod can damage its ability to accurately detect a flame.
For technical drawings and 3-D models, click on a part number.
Rod | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Bendable To | Lg. | Dia. | Material | Insulation Material | Flange Material | For Ignition Type | Max. Temp., °F | Mounting Fasteners Included | Includes | Each | |
| 90° | 3 7/32" | 3/32" | Iron Alloy | Ceramic | Zinc-Plated Steel | Electronic Spark | 482° | Yes | Protective Bending Sleeve, 30" Wire Lead with 1/4" Quick-Disconnect Terminals, 3/16" Quick-Disconnect Terminal | 0000000 | 000000 |
Humidistats
Turn the dial to control humidity equipment.
Humidistats for humidifiers and dehumidifiers mount to a surface-mount outlet box.
Overall | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Voltage | Current | Relative Humidity | Switch Type | Color | Ht. | Wd. | Dp. | Mounting Location | Mounting Fasteners Included | Each | |
For Humidifiers | |||||||||||
| 24V AC-30V AC | 1A | 10-75% | SPDT | White | 3" | 4 3/4" | 1 3/4" | Duct, Wall | Yes | 0000000 | 000000 |
For Humidifiers and Dehumidifiers | |||||||||||
| 120V AC/208V AC/240V AC | 6A/3.5A/3A | 0-70% | SPDT | Beige | 4 3/4" | 3" | 3" | Outlet Box | Yes | 0000000 | 000000 |