Description
What is the purpose of the 12A39 vent limiter in this model
allowing for both safety lockout and remote alarm signaling
it requires a minimum operating pressure differential (MOPD) of 5 PSI to lift the diaphragm and open the main orifice
ASME Certified: National Board certified to meet Section IV requirements for hot water heating boilers
As a genuine Sterling furnace part
Honeywell 10168 Smart Cell R-410A What is the purpose ofHoneywell 10168 Ammonia(NH3)Smart Cell 0 500ppm
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