When you're servicing a York condenser unit that is locked out or showing high-head pressure codes

Replacement intervals depend on environmental air quality and system demand

Manual Override: Equipped with a manual adjustment crank (5° to 85°) for commissioning and emergency positioning without power

ensuring the pilot burner alignment meets factory tolerances for optimal heat transfer and sensor response

This kit is engineered specifically for Emerson Alco 200RB and 200RD series valves from port sizes 2 through 6

Lennox 97M78 Kit 321702-401 When you're servicing a YorkThe Lennox 97M78 Kit RFC is a critical field replacement component designed specifically for precise refrigerant flow control in high efficiency cooling systems. This RFC orifice assembly features a 0. 076 inch bore diameter, engineered to maintain accurate pressure drops across the evaporator coil for optimal thermal exchange. As a direct OEM replacement part, the 97M78 ensures mid range residential and light commercial units operate within factory