Heil Quaker ICP 1160717 Defrost Board 06" ID capillary acts as

06" ID capillary acts as a dampener

It is specifically compatible with 750mV millivolt systems and 3-wire zone valves

a precision-engineered stainless steel burner tube designed for high-performance gas-fired residential and commercial boilers

Built with durable high-temperature insulation

Fail-Safe Design: The SPDT configuration allows for both control and alarm functions within a single device

Heil Quaker ICP 1160717 Defrost Board 06" ID capillary acts asThe Heil Quaker ICP 1160717 Defrost Board is a critical OEM replacement part designed to regulate the defrost cycle in residential and commercial heat pump systems. Engineered for high reliability performance, this defrost control board is a direct functional equivalent to the ICM300, featuring the same compact footprint as the original Carrier 621 series controls. It manages time and temperature defrost logic to prevent evaporator coil icing,