The Lennox 40L87 Relay is a specialized 24V SPDT switching relay engineered for heavy-duty HVAC sequencing and control applications

Reliable Fail-Safe: The normally open spring return ensures the valve stays open during a loss of control air

For field replacements

Full Port Design: Maximizes capacity and reduces turbulence

failure of the valve to shift positions

Lennox 59W49 Display Rep Kit 320819-301 The Lennox 40L87 Relay isThe Lennox 59W49 Display Rep Kit (also designated as part number 102633 01 or the DB1 1 M2 Energence Display Kit) is a critical interface component for field technicians servicing Lennox Energence M2 Series commercial rooftop units. This kit provides the necessary hardware to restore full diagnostic and programming capabilities to the units M2 Unit Controller. In the field, a failing display hampers a contractor's ability to view real time system