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To adjust the AFS-405
Common Questions: When should the A-4000-121 cartridge be replaced
Ensure all connections are tight to prevent resistance changes that could affect temperature calibration
4 Watt configuration minimizes energy loss while providing sufficient holding force for plunger actuation
Lochinvar & A.O. Smith 100111058 Outlet Switch 321894-709 To adjust the AFS-405Maintain the safety and operational integrity of commercial water heating systems with the Lochinvar & A. O. Smith 100111058 Blocked Outlet Switch. This genuine OEM safety control is engineered to monitor exhaust vent conditions in high efficiency appliances, including the BTH, SUF, and HCG Series. Functioning as a critical pressure sensing switch, it detects obstructions in the exhaust path and immediately triggers a system shutdown to prevent the