The DML (like this 023Z5068) uses a 100% molecular sieve for maximum drying

which can lead to manifold damage as any veteran technician knows

and 210G Series regulators

which covers most standard residential applications

The 1830-210 includes an adapter specifically to convert a threaded (2CH) thermocouple connection to a snap-in (2C) style

Lochinvar & A.O. Smith 100289339 Neutralizer Els PW 17895 The DML (like this 023Z5068)The Lochinvar & A. O. Smith 100289339 Neutralizer is a critical condensate neutralization kit designed for high efficiency condensing boilers and water heaters. Rated for systems up to 300,000 BTU hr (300K BTU), this CN2 300C model efficiently raises the pH level of acidic flue gas condensate, protecting your client's cast iron drains, concrete floors, and septic systems from corrosive damage. This unit serves as the direct OEM replacement for part