Lennox 16F18 Low Ambient Kit 322027-701 the internal plunger or diaphragm

the internal plunger or diaphragm in the 312-577 kit likely requires replacement

Constructed with galvanized steel and a convex center disc

to maintain drive efficiency and extend belt life

This assembly is typically used when the control circuit requires additional resistance to match the electrical characteristics of specific 36C valve and pilot combinations

Lennox 16F18 Low Ambient Kit 322027-701 the internal plunger or diaphragmFor contractors managing 16F18 compatible rooftop units or split systems, the Lennox 16F18 Low Ambient Kit is a critical field installed accessory for maintaining stable head pressure during cold weather cooling demands. This kit utilizes an ICM333 variable speed controller and high accuracy pressure transducers to modulate condenser fan speeds based on liquid line conditions. Instead of traditional fan cycling, which can cause erratic pressure swings