| Residential or Commercial | Boiler |  | |
| Installation Location | Indoor Only | | |
| Exhaust Type | 2-pipe Direct Vent | | |
| Max Flow Rate | 17 GPM | | |
| Flow Rate @ 50°F Rise | N/A | | |
| Flow Rate @ 80°F Rise | N/A | | |
| Temperature Range | 140°F - 180°F | | |
| Production Status | Discontinued | | |
| Condensing | No | | |
| Minimum Activation Flow Rate | 4 | | |
| Water Quality | Treatment May Be Necessary | | |
| Freeze Protection | N/A | | |
| Freeze Protection Rating - Indoor Temp | N/A | | |
| Freeze Protection Rating - Outdoor Temp | N/A | | |
| Recirculation Compatible? | Yes | | |
| New Generation Model Number | N/A | | |
| Previous Name | NH-1501-DV-NG | | |
| Available Temperature Settings (with remote) | 140, 145, 150, 155, 160, 165, 170, 176, 180°F | | |
| Default Temperature Setting (without remote) | N/A | | |
| Default Temperature Program Setting Options (without remote) | N/A | | |
| Production Date Range | 01/2007 - Present | | |
| Min Gas Input (Btu) | 55500 | | |
| Max Gas Input (Btu) | 150000 | | |
| Height (in) | 24.2 | | |
| Width (in) | 9.4 | | |
| Depth (in) | 10 | | |
| Weight (lbs) | 65 | | |
| Thermal Efficiency | N/A | | |
| Energy Factor | N/A | | |
| Afue | 83% | | |
| Quick-Connect Compatible? | No | | |
| Cold Water Connection Size (in) | 1 | | |
| Hot Water Connection Size (in) | 1 | | |
| Gas Connection Size (in) | 3/4 | | |
| Power Supply | 120 VAC (60 Hz) | | |
| Current Draw (A) | 0.775 | | |
| Exhaust Vent Diameter Requirements | 4" | | |
| Exhaust Vent Material Requirements | Category III Stainless Steel | | |
| Max Vent Length with 1 elbow | 57’ | | |
| Vent Termination Clearances to Any Building Opening (ft) | Below = 1’, Side = 1’, or Above = 1’ | | |
| Gas Supply Pressure Range | 4 - 10.5" WC | | |
| Min Gas Line Size | 3/4" up to 100’ | | |
| Water Pressure Rating (psi) | 15-30 | | |
| Case Clearances (in) | Top = 12", Front = 4", Sides = 2", Back = 0" | | |
| Combustion Air Requirements - using Indoor Air | N/A | | |
| Combustion Air Requirements - using Outdoor Air | N/A | | |
| Head Loss at 2 gpm | N/A | | |
| Cold Connection Height | 2.2" | | |
| Power Consumption w/out Freeze Prevention | 93 Watts | | |
| Power Consumption w/Freeze Prevention | 93 Watts | | |
| Flow Meter Alarm | No | | |
| Service Reminder | No | | |
| Condensate Handling Method? | N/A | | |
| Noise Rating (dB) | Less than 60 dB | | |
| Tested to UL Computer Controlled Safety Standards | Yes | | |
| Flame Sensor | Yes | | |
| High Limit Switch | Yes | | |
| Lightning Protection | Yes | | |
| Overheat Cutoff Fuse | Yes | | |
| Temperature Lockout | Yes | | |
| Ignition Type | Direct Electronic | | |
| Case Material | Durable Steel Casing with Polyester Coating | | |
| Color/Finish | Beige | | |
| Flue Collar Material | Stainless Steel | | |
| Primary Heat Exchanger Material | Copper | | |
| Secondary Heat Exchanger Material | N/A | | |
| Mounting Type | Wall Hung | | |
| Package Contents | Tapping Screws, Safety Relief Valve, Safety Relief Valve Fitting and Gasket, Y Terminal, Pressure & Temperature Gauge, Round Terminal, Owner’s Guide, Warranty, Installation Manual | | |
| Water Holding Capacity | 0.4 gallons | | |
| Keypad/Thermostat Display | Built-in | | |
| Compatible Remote Controller Part # | RC-7648M | | |
| Isolator Valve Part # | IK-WV-300-1-xx | | |
| Freeze Protection | N/A | | |
| Freeze Protection Kit Accessory | N/A | | |
| Outdoor Vent Cap Part # | N/A | | |
| Pipe Cover Part # | N/A | | |
| Recess Box Part # | N/A | | |
| High Elevation Adjustment | Yes | | |
| Quick-Connect Cord Part # | N/A | | |
| System Controller Compatible? | No | | |
| System Controller Part # | N/A | | |
| Remote Controller Cord | Not Included | | |
| Compatible Remote Controller Cord Part # | N/A | | |
| Power Cord | Not included | | |
| |
| ENERGY STAR® Qualified | No | | |
| CSA | Yes | | |
| Mobile Home | No | | |
| NSF | No | | |
| SCAQMD (20 ppm) | No | | |
| SCAQMD (55 ppm) | Yes | | |
| UPC | No | | |
| Energy Guide - Est. Yearly Energy Use | N/A | | |
| Energy Guide - Est. Yearly Operating Cost | | | |
| UPC Low Lead | No | | |
| ASME (HLW) | No | | |
| ASME (H) | No | | |
| ASME (NB) | No | | |
| |
| Heat Exchanger Warranty (w/out Recirculation) | 10 Years Prorated | | |
| Heat Exchanger Warranty (w/Recirculation) | 10 Years Prorated | | |
| Parts Warranty | 1 Year | | |
| Labor Warranty | 1 Year | | |
| Residential or Commercial | Boiler | | |
| Installation Location | Indoor Only | | |
| Exhaust Type | 2-pipe Direct Vent | | |
| Max Flow Rate | 17 GPM | | |
| Flow Rate @ 50°F Rise | N/A | | |
| Flow Rate @ 80°F Rise | N/A | | |
| Temperature Range | 140°F - 180°F | | |
| Production Status | Discontinued | | |
| Condensing | No | | |
| Minimum Activation Flow Rate | 4 | | |
| Water Quality | Treatment May Be Necessary | | |
| Freeze Protection | N/A | | |
| Freeze Protection Rating - Indoor Temp | N/A | | |
| Freeze Protection Rating - Outdoor Temp | N/A | | |
| Recirculation Compatible? | Yes | | |
| New Generation Model Number | N/A | | |
| Previous Name | NH-1501-DV-NG | | |
| Available Temperature Settings (with remote) | 140, 145, 150, 155, 160, 165, 170, 176, 180°F | | |
| Default Temperature Setting (without remote) | N/A | | |
| Default Temperature Program Setting Options (without remote) | N/A | | |
| Production Date Range | 01/2007 - Present | | |
| Min Gas Input (Btu) | 55500 | | |
| Max Gas Input (Btu) | 150000 | | |
| Height (in) | 24.2 | | |
| Width (in) | 9.4 | | |
| Depth (in) | 10 | | |
| Weight (lbs) | 65 | | |
| Thermal Efficiency | N/A | | |
| Energy Factor | N/A | | |
| Afue | 83% | | |
| Quick-Connect Compatible? | No | | |
| Cold Water Connection Size (in) | 1 | | |
| Hot Water Connection Size (in) | 1 | | |
| Gas Connection Size (in) | 3/4 | | |
| Power Supply | 120 VAC (60 Hz) | | |
| Current Draw (A) | 0.775 | | |
| Exhaust Vent Diameter Requirements | 4" | | |
| Exhaust Vent Material Requirements | Category III Stainless Steel | | |
| Max Vent Length with 1 elbow | 57’ | | |
| Vent Termination Clearances to Any Building Opening (ft) | Below = 1’, Side = 1’, or Above = 1’ | | |
| Gas Supply Pressure Range | 4 - 10.5" WC | | |
| Min Gas Line Size | 3/4" up to 100’ | | |
| Water Pressure Rating (psi) | 15-30 | | |
| Case Clearances (in) | Top = 12", Front = 4", Sides = 2", Back = 0" | | |
| Combustion Air Requirements - using Indoor Air | N/A | | |
| Combustion Air Requirements - using Outdoor Air | N/A | | |
| Head Loss at 2 gpm | N/A | | |
| Cold Connection Height | 2.2" | | |
| Power Consumption w/out Freeze Prevention | 93 Watts | | |
| Power Consumption w/Freeze Prevention | 93 Watts | | |
| Flow Meter Alarm | No | | |
| Service Reminder | No | | |
| Condensate Handling Method? | N/A | | |
| Noise Rating (dB) | Less than 60 dB | | |
| Tested to UL Computer Controlled Safety Standards | Yes | | |
| Flame Sensor | Yes | | |
| High Limit Switch | Yes | | |
| Lightning Protection | Yes | | |
| Overheat Cutoff Fuse | Yes | | |
| Temperature Lockout | Yes | | |
| Ignition Type | Direct Electronic | | |
| Case Material | Durable Steel Casing with Polyester Coating | | |
| Color/Finish | Beige | | |
| Flue Collar Material | Stainless Steel | | |
| Primary Heat Exchanger Material | Copper | | |
| Secondary Heat Exchanger Material | N/A | | |
| Mounting Type | Wall Hung | | |
| Package Contents | Tapping Screws, Safety Relief Valve, Safety Relief Valve Fitting and Gasket, Y Terminal, Pressure & Temperature Gauge, Round Terminal, Owner’s Guide, Warranty, Installation Manual | | |
| Water Holding Capacity | 0.4 gallons | | |
| Keypad/Thermostat Display | Built-in | | |
| Compatible Remote Controller Part # | RC-7648M | | |
| Isolator Valve Part # | IK-WV-300-1-xx | | |
| Freeze Protection | N/A | | |
| Freeze Protection Kit Accessory | N/A | | |
| Outdoor Vent Cap Part # | N/A | | |
| Pipe Cover Part # | N/A | | |
| Recess Box Part # | N/A | | |
| High Elevation Adjustment | Yes | | |
| Quick-Connect Cord Part # | N/A | | |
| System Controller Compatible? | No | | |
| System Controller Part # | N/A | | |
| Remote Controller Cord | Not Included | | |
| Compatible Remote Controller Cord Part # | N/A | | |
| Power Cord | Not included | | |
| |
| ENERGY STAR® Qualified | No | | |
| CSA | Yes | | |
| Mobile Home | No | | |
| NSF | No | | |
| SCAQMD (20 ppm) | No | | |
| SCAQMD (55 ppm) | Yes | | |
| UPC | No | | |
| Energy Guide - Est. Yearly Energy Use | N/A | | |
| Energy Guide - Est. Yearly Operating Cost | | | |
| UPC Low Lead | No | | |
| ASME (HLW) | No | | |
| ASME (H) | No | | |
| ASME (NB) | No | | |
| |
| Heat Exchanger Warranty (w/out Recirculation) | 10 Years Prorated | | |
| Heat Exchanger Warranty (w/Recirculation) | 10 Years Prorated | | |
| Parts Warranty | 1 Year | | |
| Labor Warranty | 1 Year | | |
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