Description
Designed for immersion in boiler or storage tank wells, the Honeywell/Resideo L4006A1967, a compact Aquastat controller provides adjustable high or low temperature limit control—with built-in differential settings—ensuring reliable fluid temperature regulation between 100 °F and 240 °F.
Features:
- Totally enclosed Micro Switch snap-acting switches operate on temperature rise to setpoint.
- Visible control point scale and external adjustment screw permit easy setting.
- Horizontal or vertical insertion of the sensing element.
- Direct or well immersion of the sensing element.
- Models available for strap-on mounting.
- Remote bulb model may be used to sense air temperature in ducts and in outside air sensing applications.
- Select models include heat-conductive compound.
- Select models have wells.
- UL limit rated device.











