The Daikin-McQuay 059999804 Actuator is a dedicated 120V Spring Return Actuator engineered for precision control in commercial HVAC systems

which is characterized by its specific bolt circle and flange dimensions

provided the vent pipes are clear and the switch itself is functional

The two-position (on/off) control logic is powered by a brushless DC motor with stall protection

Enhanced System Stability: Maintains consistent evaporator superheat

Tjernlund Products DC4 Draft Control 321894-706 The Daikin-McQuay 059999804 Actuator isThe Tjernlund DC4 Draft Control is an essential component for technicians managing combustion efficiency in residential and commercial heating systems. This 4 inch single acting draft control is precision engineered to maintain a consistent neutral draft within chimneys and vents, effectively counteracting fluctuations caused by changing barometric pressure, stack temperatures, and wind velocity. Fabricated from heavy duty corrosion resistant steel,