Common Questions Is this compatible with single-stage units

this frame is also rated for use with HE205A and HE205C models

Standard replacement covers typically utilize existing #4-40 hex or Torx tamper-resistant screws

Application Specific: Drop-in compatibility for Maxitrol 210E and Maxitrol 325-9 models simplifies field adjustments

Lochinvar & A.O. Smith 100167786 Time Delay Module Els PW 29614 Common Questions Is this compatibleFor experienced service technicians working on Lochinvar or A. O. Smith high efficiency hydronic systems, the Lochinvar 100167786 Time Delay Module is the required OEM replacement to maintain factory spec sequencing. This component is identical to part number RLY3003 and provides critical timing control for the startup and post purge cycles. In high demand residential and commercial applications, this module regulates the timing of the circulator pump