Product Details
                                            
                                        - 6-year limited tank & parts warranty, 1-year labor warranty
- 40,000 BTU input for faster recovery
- 83-gallon first hour rating
- Ultra Low NOx
- High-Recovery model provides more hot water for peak demand periods
- Flammable vapor ignition-resistant design
- Flexible 3” or 4” venting option
The 6-50-UNBFT 50-Gallon Tall Ultra Low NOx Natural Gas Water Heater features an automatic flue damper to increase efficiency as it automatically opens and closes to reduce heat loss in the standby mode. The electronic gas control incorporates an LED status indicator that monitors system operation and service diagnostics.
An automatic pilot relight system that shuts off the pilot during stand-by modes to reduce gas consumption and eliminates nuisance pilot outage issues. This models features a 6-year tank and parts limited warranty and a 1-year labor limited warranty.
                                        Specifications
                                    
                                    
                                
                                            Tech Specs
                                        
                                        
                                                    Nominal Gallon Capacity
                                                
                                                
                                                    
                                                        50 Gallons
                                                    
                                                
                                            
                                                
                                                    Rated Storage Volume
                                                
                                                
                                                    
                                                        48 Gallons
                                                    
                                                
                                            
                                                
                                                    UEF
                                                
                                                
                                                    
                                                        0.7
                                                    
                                                
                                            
                                                
                                                    Maximum BTUs
                                                
                                                
                                                    
                                                        40,000
                                                    
                                                
                                            
                                                
                                                    Power Source
                                                
                                                
                                                    
                                                        GAS
                                                    
                                                
                                            
                                                
                                                    Limited Tank Warranty
                                                
                                                
                                                    
                                                        6 Years
                                                    
                                                
                                            
                                                
                                                    Limited Parts Warranty
                                                
                                                
                                                    
                                                        6 Years
                                                    
                                                
                                            
                                                
                                                    T&P Relief Valve
                                                
                                                
                                                    
                                                        Yes
                                                    
                                                
                                            
                                                
                                                    Water Connection Size
                                                
                                                
                                                    
                                                        0.75"
                                                    
                                                
                                            
                                                
                                                    Emissions
                                                
                                                
                                                    
                                                        Ultra-Low NOx
                                                    
                                                
                                            
                                                
                                                    First Hour Rating
                                                
                                                
                                                    
                                                        83 Gallons
                                                    
                                                
                                            
                                                
                                                    ASME Certified
                                                
                                                
                                                    
                                                        No
                                                    
                                                
                                            
                                                
                                                    LEED Rating
                                                
                                                
                                                    
                                                        1.00
                                                    
                                                
                                            
                                                
                                                    Blanket Included
                                                
                                                
                                                    
                                                        No
                                                    
                                                
                                            
                                                
                                                    Destination Country
                                                
                                                
                                                    
                                                        US
                                                    
                                                
                                            
                                                
                                                    Flue Diameter
                                                
                                                
                                                    
                                                        4.00
                                                    
                                                
                                            
                                                
                                                    Fuel Source
                                                
                                                
                                                    
                                                        NATURAL
                                                    
                                                
                                            
                                                
                                                    Height to T&P
                                                
                                                
                                                    
                                                        50.50
                                                    
                                                
                                            
                                                
                                                    Ignition Type
                                                
                                                
                                                    
                                                        Electronic Hot Surface Igniter
                                                    
                                                
                                            
                                                
                                                    Installation Type
                                                
                                                
                                                    
                                                        INDOOR
                                                    
                                                
                                            
                                                
                                                    Application
                                                
                                                
                                                    
                                                        RESIDENTIAL
                                                    
                                                
                                            
                                                
                                                    Shipping Height 
                                                
                                                
                                                    
                                                        63.69
                                                    
                                                
                                            
                                                
                                                    Shipping Length 
                                                
                                                
                                                    
                                                        29
                                                    
                                                
                                            
                                                
                                                    Shipping Width 
                                                
                                                
                                                    
                                                        23.13
                                                    
                                                
                                            
                                                
                                                    Side Loop
                                                
                                                
                                                    
                                                        No
                                                    
                                                
                                            
                                        
                                            Dimension & Venting
                                        
                                        
                                                    Type
                                                
                                                
                                                    
                                                        Water Heater
                                                    
                                                
                                            
                                                
                                                    Height
                                                
                                                
                                                    
                                                        57.25"
                                                    
                                                
                                            
                                                
                                                    Diameter
                                                
                                                
                                                    
                                                        22 in."
                                                    
                                                
                                            
                                                
                                                    Shipping Weight
                                                
                                                
                                                    
                                                        164 lbs
                                                    
                                                
                                            
                                                
                                                    Vent Type
                                                
                                                
                                                    
                                                        Atmospheric Vent
                                                    
                                                
                                            
                                                
                                                    Height to Gas Valve
                                                
                                                
                                                    
                                                        12.5"
                                                    
                                                
                                            
                                         
                            
                         
                                