Dayton
Dayton 2NNT4 Remote Bulb Thermostat -30 to 90 Degrees F
A line-voltage mechanical thermostat with remote bulb sensing, SPST switch closing on rise across a -30 to 90 °F range and a 3.5 °F differential
- TypeRemote Bulb Temperature Control
- Wide -30 °F to 90 °F control range suits diverse cooling needs
- Remote sensing bulb measures temperature away from the unit for accurate response
- SPST switch closes on rise to activate cooling equipment automatically
- Handles 16 A at 120 VAC and 8 A at 240 VAC for line-voltage loads
- 5 °F differential prevents short-cycling and extends equipment life
Line-voltage mechanical thermostat
The Dayton 2NNT4 is a single-pole single-throw mechanical thermostat that closes on temperature rise. It operates across a control range of -30 to 90 degrees Fahrenheit at 24 to 600 VAC, rated for 16 full-load amps at 120 VAC and 8 amps at 240 VAC. The unit is not programmable and provides cooling-only switching action with a fixed 3.5-degree differential.
Remote bulb with 3-degree sensitivity
A remote sensing bulb is included, allowing the sensing element to be placed away from the switch body for accurate temperature monitoring in ducts, tanks or other enclosures. The mechanism responds to changes as small as 3 degrees Fahrenheit. The compact housing measures four-and-a-half inches high by two-and-one-eighth inches wide and deep, suitable for surface or panel mounting in industrial or commercial settings.
Replaces fixed-bulb or non-remote controls
This thermostat upgrades installations where the sensor must be located remotely from the switch, such as refrigeration, HVAC or process-cooling applications. The jump is worthwhile when an existing line-voltage control cannot reach the sensing point or lacks the -30-degree low-end range. It does not serve heating-only or dual-mode systems, nor does it suit applications requiring programmable schedules or electronic precision.
Highlights
- Wide -30 °F to 90 °F control range suits diverse cooling needs
- Remote sensing bulb measures temperature away from the unit for accurate response
- SPST switch closes on rise to activate cooling equipment automatically
- Handles 16 A at 120 VAC and 8 A at 240 VAC for line-voltage loads
- 5 °F differential prevents short-cycling and extends equipment life
Specifications
| Brand | DAYTON |
|---|---|
| Type | Remote Bulb Temperature Control |
Questions about this item
What voltage range does the SPST switch on this thermostat support?
The SPST switch is rated for 24 to 600 VAC, with 16 A at 120 VAC and 8 A at 240 VAC.
What are the overall dimensions of the thermostat body?
The unit measures 4-1/2 inches high, 2-1/8 inches wide, and 2-1/8 inches deep.
How is the remote bulb mounted, and what common mistake should be avoided?
The remote sensing bulb is included and must be positioned in the controlled space; do not kink or sharply bend the capillary tube during installation.
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