The ProLine® Ultra-Low NOx High Recovery gas water heater is equipped with a pre-wired, factory-mounted blower which provides more efficient control of heat and helps ensure an adequate supply of make-up air.

AO Smith® ProLine® Gas Water Heater, High Recovery, Series: GCN-75, 75100 Btu/hr Heating, Natural Gas, 1/2 in NPT Gas Connection, 74 gal Tank, Atmospheric Vent, 4 in Vent, Energy Factor: 0.81, 1 in NPT Water Connection, 150 psi, Tall or Short: Short, Ultra Low Nox: Yes, 25-1/4 in Dia x 62-1/16 in H

• Fully automatic controls with safety shutoff accurate, dependable control system requires no electric connections
• Fixed automatic gas shutoff device for added safety, not recommended for 180 deg F sanitizing
• Heavy gauge steel jacket - Finished with baked enamel over bonderized undercoat
• Glasslined tank - Maximizes tank life
• Foam insulation saves fuel, helps reduce standby heat loss
• Ultra-low NOx emissions - Complies with SCAQMD rule 1146.2 and other Air Quality Management Districts with similar requirements of 14 ng/j
• Easy-to-install - Completely factory-assembled
• Only gas, water and vent connections need to be made
• All connections are located in front and top of heaters for ease of installation and service
• Draft hood - Low profile draft hood furnished as standard equipment
• Coregard™ anode rod - Our anode rods have a stainless steel core that extends the life of the anode rod allowing superior tank protection for longer than standard anode rods
• Equipped with gas pressure regulator
• Integral automatic gas shutoff system prevents excessive water temperature
• Standard with side loop fittings for use with hydronic heating applications
• Approved for installation from sea level to 7700 ft elevation

• Specification Sheet https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/A_O_Smith_GCN10000L010000_Specification_Sheet.pdf