The 2RS rubber seals offer better protection against liquid and fine particulates than metal shields (ZZ)

Adjustments to the dial only modify the cut-out (off) temperature

While it depends on the damper seal type and static pressure

provided the enclosure is protected from direct liquid ingress and excessive UV exposure to prolong the life of the plastic housing

which facilitates rapid field replacement using the PIRR replacement relay module without requiring a full rewire

Heat Controller 8768 Board 319847-401 The 2RS rubber seals offerThe Heat Controller 8768 Hydro Microprocessor Board is a specialized genuine OEM replacement control board designed for high precision management of hydronic HVAC systems. As an essential HVAC circuit board, it serves as the central logic unit for Comfort Aire HWCG series air handlers and compatible wall mount hydronic heating and cooling units. This microprocessor control board utilizes advanced algorithms to synchronize water flow, temperature