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this specific thermostatic expansion valve is calibrated for the pressure characteristics of R-410A
Utilizing this gas boiler control board ensures the system retains its original AHRI ratings and operational certifications
providing precise flame impingement on the thermocouple for consistent millivolt generation
Installing this Utica gas boiler flame sensor ensures your heating system safety protocols remain intact
Direct OEM Compatibility: Verified as an exact replacement for the Lennox 34M7401
Zonefirst AOBD-12X10 Damper Refrigerant this specific thermostatic expansion valveThe Zonefirst AOBD 12X10 is a heavy duty automatic opposed blade damper designed for precision airflow management within forced air zoning systems. Measuring 12 inches wide by 10 inches high, this unit features an opposed blade damper configuration, which is the preferred choice for veteran technicians seeking to minimize air turbulence and ensure a more linear pressure drop compared to parallel blade designs. Utilizing a 24Vac power open power closed