Lennox 16V37 Defrost Control Kit Refrigerant this Apollo Valves 18C-500 series

this Apollo Valves 18C-500 series unit should be installed with the 4" probe fully immersed in the hot water within the top 6 inches of the tank

but it is important to match the specific 120V 60Hz specifications to maintain proper functionality

it can be adapted for dampers by installing the AM-601 linkage kit

This valve features 3/8 inch ODM x 3/8 inch ODF connections and a 30-inch capillary tube for flexible sensing bulb placement

Lennox 16V37 Defrost Control Kit Refrigerant this Apollo Valves 18C-500 seriesThe Lennox 16V37 Defrost Control Kit is a critical OEM replacement component designed to manage the defrost cycle for Lennox heat pump systems. As a direct replacement for discontinued part numbers 100269 04, 100269 07, and 619559 01, this control board uses integrated time and temperature logic to monitor outdoor coil conditions. By accurately initiating and terminating defrost cycles, it prevents ice accumulation that can lead to reduced airflow,