making it a versatile addition to any contractor's service kit for commercial boiler maintenance

Rugged enclosure design allows for installation in harsh mechanical rooms or rooftop units

Verify your valve's code number and port size before installation to ensure the diaphragm and bellows match the existing housing

This is the standard configuration for pump-up control

Field Reliability: Tested for high-cycle performance in electric furnaces and heat pump air handlers

Lennox 22W25 Relay Board Kit R-410A making it a versatile additionThe Lennox 22W25 Relay Board Kit is a critical OEM replacement component designed to provide precise 24V AC switching logic for residential and commercial HVAC units. This kit, which is a direct and identical replacement for the Lennox 22W2501 and the LB 112642A assembly, serves as a high reliability interface for managing blower delays and component sequencing. By utilizing an integrated blower delay relay, the board ensures the heat exchanger