Previous Name : NCC1991-DV-LP
| Residential or Commercial | Commercial |  | |
| Installation Location | Indoor Only | | |
| Exhaust Type | 2-pipe Direct Vent (SV convertible) |  | |
| Max Flow Rate | 11.1 GPM | | |
| Flow Rate @ 50°F Rise | 7.4 | | |
| Flow Rate @ 80°F Rise | 4.7 | | |
| Temperature Range | 100-185°F | | |
| Production Status | Discontinued | | |
| Condensing | Yes | | |
| Minimum Activation Flow Rate | 0.5 GPM | | |
| Water Quality | Treatment may be needed | | |
| Freeze Protection | Yes | | |
| Freeze Protection Rating - Indoor Temp | -30°F | | |
| Freeze Protection Rating - Outdoor Temp | N/A | | |
| Recirculation Compatible? | Yes | | |
| New Generation Model Number | Yes | | |
| Previous Name | NCC1991-DV-LP | | |
| Available Temperature Settings (with remote) | 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 160, 170, 185°F | | |
| Default Temperature Setting (without remote) | 120°F | | |
| Default Temperature Program Setting Options (without remote) | 120, 130, 140, 185°F | | |
| Production Date Range | 03/2016 - Present | | |
| Min Gas Input (Btu) | 16000 | | |
| Max Gas Input (Btu) | 199900 | | |
| Height (in) | 24.4 | | |
| Width (in) | 18.4 | | |
| Depth (in) | 9.4 | | |
| Weight (lbs) | 68 | | |
| Thermal Efficiency | 94% | | |
| Energy Factor | | | |
| Afue | N/A | | |
| Quick-Connect Compatible? | Yes | | |
| Cold Water Connection Size (in) | 3/4 | | |
| Hot Water Connection Size (in) | 3/4 | | |
| Gas Connection Size (in) | 3/4 | | |
| Power Supply | 120 VAC | | |
| Current Draw (A) | 2.55 | | |
| Exhaust Vent Diameter Requirements | 3" or 4" | | |
| Exhaust Vent Material Requirements | PVC or CPVC | | |
| Max Vent Length with 1 elbow | 57’ with 4" or 28’ with 3" | | |
| Vent Termination Clearances to Any Building Opening (ft) | Below = 1’, Side = 1’, or Above = 1’ | | |
| Gas Supply Pressure Range | 8-14" WC | | |
| Min Gas Line Size | 3/4" up to 30’ | | |
| Water Pressure Rating (psi) | 15-150 | | |
| Case Clearances (in) | Top = 12", Front = 4", Sides = 2", Back = 0" | | |
| Combustion Air Requirements - using Indoor Air | 199 in² (Only if SV conversion) | | |
| Combustion Air Requirements - using Outdoor Air | 100 in²(Only if SV conversion) | | |
| Head Loss at 2 gpm | | | |
| Cold Connection Height | 2.2" | | |
| Power Consumption w/out Freeze Prevention | 83 Watts | | |
| Power Consumption w/Freeze Prevention | 223 Watts | | |
| Flow Meter Alarm | Yes | | |
| Service Reminder | No | | |
| Condensate Handling Method? | NC-1 or NT20A | | |
| 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 Stainless Steel Casing | | |
| Color/Finish | Stainless Steel | | |
| Flue Collar Material | PVC | | |
| Primary Heat Exchanger Material | Copper | | |
| Secondary Heat Exchanger Material | Stainless Steel | | |
| Mounting Type | Wall Hung | | |
| Package Contents | Anchoring Screws, Remote Controller, Remote Controller Cord, Owner’s Guide, Warranty, Installation Manual, Drain hose(with clamp) | | |
| Water Holding Capacity | 0.5 gal | | |
| Keypad/Thermostat Display | Included | | |
| Compatible Remote Controller Part # | RC-9018M | | |
| Isolator Valve Part # | IK-WV-200-1-XX | | |
| Freeze Protection | Yes | | |
| Freeze Protection Kit Accessory | | | |
| Outdoor Vent Cap Part # | N/A | | |
| Pipe Cover Part # | PC-3S-SUS | | |
| Recess Box Part # | N/A | | |
| High Elevation Adjustment | Yes | | |
| Quick-Connect Cord Part # | QC-2 | | |
| System Controller Compatible? | Yes | | |
| System Controller Part # | SC-301-6M, SCU-301-12M | | |
| Remote Controller Cord | Included | | |
| Compatible Remote Controller Cord Part # | RC-CORD10 | | |
| Power Cord | Included attached | | |
| | | | |
| ENERGY STAR® Qualified | Yes | | |
| CSA | Yes | | |
| Mobile Home | Yes | | |
| NSF | Yes | | |
| SCAQMD (20 ppm) | Yes | | |
| SCAQMD (55 ppm) | No | | |
| UPC | No | | |
| Energy Guide - Est. Yearly Energy Use | 205 gallons | | |
| Energy Guide - Est. Yearly Operating Cost | $494 | | |
| UPC Low Lead | Yes | | |
| ASME (HLW) | No | | |
| ASME (H) | No | | |
| ASME (NB) | No | | |
| | | | |
| Heat Exchanger Warranty (w/out Recirculation) | 5 years | | |
| Heat Exchanger Warranty (w/Recirculation) | 5 years | | |
| Residential or Commercial | Commercial | | |
| Installation Location | Indoor Only | | |
| Exhaust Type | 2-pipe Direct Vent (SV convertible) | | |
| Max Flow Rate | 11.1 GPM | | |
| Flow Rate @ 50°F Rise | 7.4 | | |
| Flow Rate @ 80°F Rise | 4.7 | | |
| Temperature Range | 100-185°F | | |
| Production Status | Discontinued | | |
| Condensing | Yes | | |
| Minimum Activation Flow Rate | 0.5 GPM | | |
| Water Quality | Treatment may be needed | | |
| Freeze Protection | Yes | | |
| Freeze Protection Rating - Indoor Temp | -30°F | | |
| Freeze Protection Rating - Outdoor Temp | N/A | | |
| Recirculation Compatible? | Yes | | |
| New Generation Model Number | Yes | | |
| Previous Name | NCC1991-DV-LP | | |
| Available Temperature Settings (with remote) | 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 160, 170, 185°F | | |
| Default Temperature Setting (without remote) | 120°F | | |
| Default Temperature Program Setting Options (without remote) | 120, 130, 140, 185°F | | |
| Production Date Range | 03/2016 - Present | | |
| Min Gas Input (Btu) | 16000 | | |
| Max Gas Input (Btu) | 199900 | | |
| Height (in) | 24.4 | | |
| Width (in) | 18.4 | | |
| Depth (in) | 9.4 | | |
| Weight (lbs) | 68 | | |
| Thermal Efficiency | 94% | | |
| Energy Factor | | | |
| Afue | N/A | | |
| Quick-Connect Compatible? | Yes | | |
| Cold Water Connection Size (in) | 3/4 | | |
| Hot Water Connection Size (in) | 3/4 | | |
| Gas Connection Size (in) | 3/4 | | |
| Power Supply | 120 VAC | | |
| Current Draw (A) | 2.55 | | |
| Exhaust Vent Diameter Requirements | 3" or 4" | | |
| Exhaust Vent Material Requirements | PVC or CPVC | | |
| Max Vent Length with 1 elbow | 57’ with 4" or 28’ with 3" | | |
| Vent Termination Clearances to Any Building Opening (ft) | Below = 1’, Side = 1’, or Above = 1’ | | |
| Gas Supply Pressure Range | 8-14" WC | | |
| Min Gas Line Size | 3/4" up to 30’ | | |
| Water Pressure Rating (psi) | 15-150 | | |
| Case Clearances (in) | Top = 12", Front = 4", Sides = 2", Back = 0" | | |
| Combustion Air Requirements - using Indoor Air | 199 in² (Only if SV conversion) | | |
| Combustion Air Requirements - using Outdoor Air | 100 in²(Only if SV conversion) | | |
| Head Loss at 2 gpm | | | |
| Cold Connection Height | 2.2" | | |
| Power Consumption w/out Freeze Prevention | 83 Watts | | |
| Power Consumption w/Freeze Prevention | 223 Watts | | |
| Flow Meter Alarm | Yes | | |
| Service Reminder | No | | |
| Condensate Handling Method? | NC-1 or NT20A | | |
| 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 Stainless Steel Casing | | |
| Color/Finish | Stainless Steel | | |
| Flue Collar Material | PVC | | |
| Primary Heat Exchanger Material | Copper | | |
| Secondary Heat Exchanger Material | Stainless Steel | | |
| Mounting Type | Wall Hung | | |
| Package Contents | Anchoring Screws, Remote Controller, Remote Controller Cord, Owner’s Guide, Warranty, Installation Manual, Drain hose(with clamp) | | |
| Water Holding Capacity | 0.5 gal | | |
| Keypad/Thermostat Display | Included | | |
| Compatible Remote Controller Part # | RC-9018M | | |
| Isolator Valve Part # | IK-WV-200-1-XX | | |
| Freeze Protection | Yes | | |
| Freeze Protection Kit Accessory | | | |
| Outdoor Vent Cap Part # | N/A | | |
| Pipe Cover Part # | PC-3S-SUS | | |
| Recess Box Part # | N/A | | |
| High Elevation Adjustment | Yes | | |
| Quick-Connect Cord Part # | QC-2 | | |
| System Controller Compatible? | Yes | | |
| System Controller Part # | SC-301-6M, SCU-301-12M | | |
| Remote Controller Cord | Included | | |
| Compatible Remote Controller Cord Part # | RC-CORD10 | | |
| Power Cord | Included attached | | |
| | | | |
| ENERGY STAR® Qualified | Yes | | |
| CSA | Yes | | |
| Mobile Home | Yes | | |
| NSF | Yes | | |
| SCAQMD (20 ppm) | Yes | | |
| SCAQMD (55 ppm) | No | | |
| UPC | No | | |
| Energy Guide - Est. Yearly Energy Use | 205 gallons | | |
| Energy Guide - Est. Yearly Operating Cost | $494 | | |
| UPC Low Lead | Yes | | |
| ASME (HLW) | No | | |
| ASME (H) | No | | |
| ASME (NB) | No | | |
| | | | |
| Heat Exchanger Warranty (w/out Recirculation) | 5 years | | |
| Heat Exchanger Warranty (w/Recirculation) | 5 years | | |
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