DESCRIPTION
AO Smith® ProLine® Master Gas Water Heater, Series: HUC-40, 40000 Btu/hr Heating, Natural Gas, 1/2 in Gas Connection, 40 gal Tank, Piezo Pushbutton Ignition, 3 in and 4 in Vent Size, 41 gph at 90 deg F Rise Recovery, 0.55 Energy Factor, 3/4 in Water Connection, 150 psi, Tall, Ultra Low NOx: Yes, 18 in Dia x 62 in H
FEATURES
Intelligent control logic - The internal microprocessor provides enhanced operating parameters and tighter differentials for precise sensing and faster heating response to optimize performanceUses a thermopile to generate the power needed to operate the electronic gas control without requiring an external power sourceThe electronic gas control incorporates and LED status indicator that monitors system operation and service diagnosticsHigh uniform energy factor - Eco-Friendly non-CFC foam insulation, external heat traps and specially designed combustion chamber combine to produce a high UEF for maximum savings on operating costsGreen Choice® gas burner - Enhanced Ultra-Low NOx burner complies with SCAQMD Rule 1121 and other air quality management districts with similar requirements for NOx emissions of less than 10 ng/JDynaclean™ diffuser dip tube - Helps reduce lime and sediment buildup and maximizes hot water outputMade from long-lasting PEX cross-linked polymerCoregard™ anode rod - Our anode rods have a stainless steel core that extends the life of the anode rod allowing superior tank protection far longer than standard anode rodPro
* Line® Master products have increased anode protection with either longer or multiple anodes depending on modelPush button piezo igniter makes lighting the pilot fast and easy with one handHeat trap nipple - Factory installed for faster installationBlue Diamond® glass coating provides superior corrosion resistance compared to industry standard glass liningBlue Diamond® glass coating blend is formulated in the same lab that creates the protection for our industry-leading commercial product lineEnhanced-flow brass drain valve - Our residential water heaters have a solid brass, tamper resistant, enhanced flow, ball type, drain valveUses a standard female hose fitting that allows for fast and easy draining during maintenanceDesigned for easy operation, this valve includes an integral screwdriver slot that features a 1/4 turn (open/close) radius, which not only permits full straight-through water flow but also a quick and positive shut offAll models are certified from sea level to 7700 ft elevation