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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
One port typically monitors the positive pressure from the blower while the other senses the negative pressure (vacuum) in the combustion box
the ST9120U1011 provides adjustable heat fan on delay (30 or 60 seconds)
Whether you are performing a teardown on a Lochinvar Knight or an A
and fan functions from a single interface
Lochinvar & A.O. Smith 100189054 Collar 30067439-890 One port typically monitors theThe Lochinvar & A. O. Smith 100189054 Collar is a precision engineered 4" flue collar essential for maintaining the structural integrity of high efficiency venting systems. As an OEM component, this kit provides a secure, gas tight transition between the appliance and the exhaust infrastructure, preventing hazardous leaks and ensuring optimal draft performance. This specific part is a direct replacement for legacy units, as 100189054 is identical to