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This switch serves as a direct drop-in for legacy part numbers including HC18HV135 and HH18HV135-B
Does this include the SentryPlus Alert sensor
the Watts 0274428 is a fixed-pressure safety device
this OEM Lennox component is the industry standard
Key Benefits: Direct Replacement Logic: Serves as the official upgrade path for 071-0649-00
Lochinvar & A.O. Smith 100278058 Adapter 321894-708 This switch serves as aThe Lochinvar & A. O. Smith 100278058 Adapter is a critical venting component designed for professional high efficiency HVACR installations. This DuraVent appliance adapter is engineered specifically to transition between the units flue collar and the vent pipe system, ensuring a gas tight seal for Category II, III, and IV gas appliances. Built from premium grade materials, this adapter is compatible with condensing boilers and water heaters from the