Description
The Honeywell T991A1079/U Temperature Control Modulating Remote Bulb senses temperature changes and provides modulating control for compatible HVAC systems to maintain the desired operating conditions. Using a remote sensing bulb connected by a capillary tube, it responds to temperature variations and proportionally adjusts the associated control equipment instead of operating in a simple on/off mode. The controller is installed in the control panel while the sensing bulb is positioned at the required measurement location within the equipment or piping. Continuous temperature modulation provides accurate process control and stable system operation during heating or cooling cycles.
