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The VG1245DR is rated for water and water-glycol solutions with up to a 50% glycol concentration
Propane systems require specific orifice sizing and different control parameters
While the straight body pattern allows for flexible installation
and Tempstar evaporator coils
and necessary hose clamps to address common failures like cracked housings
Lochinvar & A.O. Smith 100074451 PCB L99H008 The VG1245DR is rated forThe Lochinvar & A. O. Smith 100074451 PCB is a critical integrated control module designed for high efficiency commercial and residential water heaters and boilers. Known as the MC50 PCB, this genuine OEM component manages vital system operations including ignition sequences, temperature regulation, and safety circuit monitoring. Engineered for a precise fit in Lochinvar Knight and various A. O. Smith tankless models, it ensures absolute signal
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