Does this burner assembly require a specific orifice size

this component features a single-inlet design with a 28-11/16 inch width and a 4-inch bore diameter

as a direct-acting valve with a rigid stainless steel body

By utilizing a 1k ohm nickel RTD

Lochinvar & A.O. Smith 100312669 UIM Ethernet 323269-701 Does this burner assembly requireThe Lochinvar & A. O. Smith 100312669 UIM Assembly with Ethernet is a critical OEM replacement part engineered for BTH and MXI series high efficiency commercial gas water heaters. As a factory programmed User Interface Module (UIM), this component ensures precise local control and advanced remote diagnostic capabilities via its integrated Ethernet connectivity. Designed to maintain the operational integrity of systems ranging from 120,000 to 250,000