Product Overview
Honeywell-United Electric Fast Response Temperature Controller (T678A1478)
The Honeywell T678A1478 Fast Response Temperature Controller is a two-stage temperature control device used to monitor and switch HVAC equipment based on changes in air or liquid temperature. Equipped with two sequential SPDT switches and a remote sensing element, it is commonly applied in duct, pipe, tank, and boiler installations where staged heating, cooling, damper, or valve control is required. This model features a fast-response sensing element with adjustable interstage differential settings for applications requiring temperature-based sequencing.
Part Details:
- Honeywell T678A1478 temperature controller with fast-response sensing element
- Two SPDT switches for sequential control of independent HVAC circuits
- Designed for temperature regulation of air or liquid media in ducts, pipes, tanks, and boilers
- Adjustable interstage differential from 3°F to 10°F
- 0°F to 100°F operating temperature range
- Remote sensing element with 5 ft. copper capillary connection
Documentation:
