Resideo HPSR104 Switching Relay 322838-754 By integrating advanced variable speed

By integrating advanced variable speed motor control

Can I use an aftermarket L220F switch instead of the 49K71

How do I size the bypass for my system

providing critical protection for the compressor and blower assembly

This technician-grade component is the direct replacement for Lennox 52M7201 and is widely compatible with G24

Resideo HPSR104 Switching Relay 322838-754 By integrating advanced variable speedThe Resideo HPSR104 is a robust four zone switching relay designed for professional hydronic applications. This 120V pump zoning panel provides precise control for up to four circulator pumps, integrating a dedicated priority zone for domestic hot water (DHW) calls. Engineered for versatility, it is fully compatible with most thermostats, including power stealing, electromechanical, and modern smart thermostats like the T6 Pro. Each thermostat