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Field-Proven Reliability: Stainless steel sensing element minimizes thermal shift and maintains calibration in fluctuating ambient temperatures
Under an open-circuit load
As a no-range strip chart
or a "chattering" sound
As a 24 VAC hardwired HVAC compressor control board
Lochinvar & A.O. Smith 100167786 Time Delay Module 30067439-890 Field-Proven Reliability: Stainless steel sensingFor 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
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