If your system requires a signal to start a circulator or boiler

This is not just an accessory

You should verify compatibility using your unit's model number before installation

The Danfoss 068Z3404 TXV is built with a rugged brass body and 3/8" x 1/2" flare connections

System Reliability: Accurate flame rectification prevents nuisance shutdowns and ensures the control board receives a high-fidelity microamp signal

Daikin-McQuay 2051516 Wire Harness 318820-201 If your system requires aThe Daikin McQuay 2051516 Wire Harness is a critical field service component engineered for seamless integration within specific McQuay air handling units and chiller control circuits. This OEM wiring assembly ensures precise electrical continuity between the main control board and peripheral sensors or actuators, maintaining the integrity of the HVAC communication loop. Designed to withstand the thermal stressors common in commercial mechanical