Using the genuine silicone hose ensures chemical compatibility and heat resistance required for commercial and residential boilers

it is recommended to inspect and reuse existing silicone tubing or replace it if it shows signs of cracking or heat damage

the Fasco D366 is the designated direct replacement for the Fasco 359

the 023Z5040 provides superior acid adsorption and high drying capacity

this is a discharge air sensor

Lochinvar & A.O. Smith 100189387 Valve R-410A Using the genuine silicone hoseThe Lochinvar & A. O. Smith 100189387 Valve is a Liquid Propane (LP) gas valve assembly designed specifically for high efficiency heating applications, including the Lochinvar Copper Fin II and FTX 725 series. As a critical component in the gas valve kit, this assembly utilizes a negative pressure regulation system to ensure precise fuel to air ratios throughout the firing cycle. For technicians troubleshooting ignition failure or flame failure codes