While this valve includes an internal filter

use a Maxitrol 13A15-5 vent protector

utilizing a genuine Reznor part ensures that the system meets original factory specifications for exhaust venting and airflow management

the switch likely isn't closing

Proper adjustment of this primary air shutter control is essential for achieving a stable flame

Lennox 60M99 Expansion Valve 323055-751 While this valve includes anThe Lennox 60M99 Expansion Valve is a precision engineered R 410A thermostatic expansion valve (TXV) designed to maintain the exact superheat required for optimal evaporator efficiency in Lennox HVAC systems. Engineered for high pressure refrigerant applications, this direct replacement Lennox TXV ensures consistent flow modulation across varying load conditions, preventing liquid slugging and protecting the compressor. HVAC contractors rely on the