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It is recommended to use high-quality foam tape or insulation (sold separately) to ensure the bulb accurately reads the suction line temperature without ambient interference
maintaining the long-term efficiency of the refrigeration cycle
5 psi (bronze)
000 BTU/hr to handle large-scale hydronic loads
and 7-second Trial for Ignition (TFI)
Lochinvar & A.O. Smith 100188879 Fan Assembly 321142-301 It is recommended to useThe Lochinvar 100188879 Fan Assembly is a critical OEM replacement component designed specifically for the FTX400 Knight XL heating boiler. Engineered to maintain precise air to fuel ratios, this kit ensures optimal combustion stability and heat exchanger efficiency. As a direct replacement for A. O. Smith 100188879 and legacy part number FAN30026, this high performance blower assembly facilitates consistent static pressure within the venting system.
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