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Common Questions What is the maximum RPM for the L150 NBR spider
this is an internal mechanical rebuild kit
Enhanced Control: Integrated auxiliary switch (1x SPDT) allows for precise end-stop verification or equipment sequencing
it handles 120V AC power requirements with a 250 PSI maximum operating pressure differential
This authentic furnace service part is manufactured with corrosion-resistant materials to withstand extreme outdoor conditions
Lochinvar & A.O. Smith 100277940 Board 321894-709 Common Questions What is theThe Lochinvar & A. O. Smith 100277940 Board is a critical low voltage connection board engineered for precision signaling in high efficiency heating systems. Specifically designed for the Knight KH055 285 fire tube boilers, this OEM replacement part serves as the central communication interface between the main controller and auxiliary system components. As a veteran technician knows, maintaining signal integrity in commercial water heating
US$ 159.50
US$ 119.97