PREMIUM NON-CONDENSING TANKLESS WATER HEATER
MODEL: NPN-180E
PREMIUM NON-CONDENSING TANKLESS WATER HEATER
NPN-180E
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Overview
- NaviTech stainless steel heat exchanger and burner
- Exterior unit for outdoor installations
- Available in NG or LP
- Cascading capable
- Low NOx emissions (20ppm)
Dimensions
14.0″ W x 23.0″ H x 9.3″ D (35.6cm W x 58.4cm H x 23.6cm D)
Certification Summary
All NPE-2 models are field convertible from NG to LP gas.
Product Approvals
| CSA | Yes |
| NSF (Standard 5) | Yes |
| Low Lead (<0.25%) | Yes |
| SCAQMD 1146.2 (NOx, <20ppm) | Yes |
| AHRI Number | 204524355 (Natural gas) 204524356 (Propane) |
| Energy Star Certified | Yes |
Efficiency Ratings*
| Uniform Energy Factor (UEF) | 0.81 |
| MAX GPM(35°F Rise) |
|
Certifications / Qualifications
Temperature Rise
| Temp Rise | NPN-180E |
|---|---|
| 30 °F (16.7 °C) rate | 10 GPM (37.9 l/m) |
| 35 °F (19.4 °C) rate | 8.5 GPM (32.2 l/m) |
| 40 °F (22.2 °C) rate | 7.5 GPM (28.4 l/m) |
| 45 °F (25 °C) rate | 6.6 GPM (25 l/m) |
| 50 °F (27.8 °C) rate | 6 GPM (22.7 l/m) |
| 55 °F (30.6 °C) rate | 5.4 GPM (20.4 l/m) |
| 60 °F (33.3 °C) rate | 5 GPM (18.9 l/m) |
| 65 °F (36.1 °C) rate | 4.6 GPM (17.4 l/m) |
| 70 °F (38.9 °C) rate | 4.3 GPM (16.3 l/m) |
| 75 °F (41.7 °C) rate | 4 GPM (15.1 l/m) |
| 80 °F (44.4 °C) rate | 3.7 GPM (14 l/m) |
| 85 °F (47.2 °C) rate | 3.5 GPM (13.2 l/m) |
| 90 °F (50 °C) rate | 3.3 GPM (12.5 l/m) |
| 100 °F (55.6 °C) rate | 3 GPM (11.4 l/m) |
| 120 °F (66.7 °C) rate | 2.9 GPM (11 l/m) |
| 130 °F (72.2 °C) rate | 2.7 GPM (10.2 l/m) |
| 140 °F (77.8 °C) rate | 2.5 GPM (9.5 l/m) |
DHW Capacity
| Model | NPN-180E |
|---|---|
| DHW | 10,700 – 180,000 BTU/h (3.135 – 52.74 kWh) |
Specifications
| Item | NPN-180E | |
|---|---|---|
| Heat Capacity (input) | Domestic hot water | 10,700 – 180,000 BTU/h (3.135 – 52.74 kWh) |
| Efficiency ratings | Efficiency rating for NG & LP (UEF) | 0.81 |
| Flow rate (DHW) | 35°F temp rise | 8.5 GPM (32.2 l/m) |
| 45°F temp rise | 6.6 GPM (25 l/m) | |
| 67°F temp rise | 4.6 GPM (17.4 l/m) | |
| Dimensions | 14.0″ W x 23.0″ H x 9.3″ D (35.6cm W x 58.4cm H x 23.6cm D) | |
| Boiler weight | 60 lbs (27.2 kg) | |
| Installation type | Outdoor wall-hung | |
| Venting type | N/A | |
| Ignition | Electronic ignition | |
| DHW water pressure | 15-150 PSI (1.055-10.545 kg/cm2) | |
| Natural gas supply pressure (from source) | 3.5 ” WC to 10.5 ” WC (0.87 Kpa to 2.61 Kpa) | |
| Propane gas supply pressure (from source) | 8 ” WC to 13 ” WC (1.99 Kpa to 3.23 Kpa) | |
| Natural gas manifold pressure (min-max) | 2.4 ” WC to 0.53 ” WC (0.59 Kpa to 0.13 Kpa) | |
| Propane gas manifold pressure (min-max) | 5.4 ” WC to 1.3 ” WC (1.3 Kpa to 0.32 Kpa) | |
| Minimum flow rate | 0.5 GPM (1.893 l/m) | |
| Connection sizes | Cold water inlet | 3/4 |
| Hot water outlet size | 3/4 | |
| Gas inlet | 3/4 | |
| Power supply | Main supply | 120V AC, 60 Hz |
| Normal | 88 W | |
| Standby | 4 W | |
| Anti-frost | 114 W | |
| External pump | < 150 W, 1.5 A W | |
| Fuse | 5.0 A | |
| Materials | Casing | Cold rolled carbon steel |
| Heat exchangers |
Stainless steel |
|
| Safety Devices | Flame rod, APS, ignition operation detector, water temperature high limit switch, power surge fuse | |
| Dimensions | 17.3″ W x 27.4″ H x 13.2″ D (43.9 cm W x 69.6 cm H x 33.5 cm D) |
| Boiler weight | 62 lbs (28.1 kg) |
| Installation type | Indoor or outdoor wall-hung |
| Ignition | Electronic ignition |
| Water pressure | 15-150 PSI (1.055-10.545 kg/cm2) |
| Natural gas supply pressure (from source) | 3.5″ WC to 10.5″ WC (0.87 Kpa to 2.61Kpa) |
| Propane gas supply pressure (from source) | 8″ WC to 13″ WC (1.99 Kpa to 3.23 Kpa) |
| Natural gas manifold pressure (min-max) | -0.04 ” WC to -0.4 ” WC (-0.0099 Kpa to -0.099 Kpa) |
| Propane gas manifold pressure (min-max) | -0.03 ” WC to -0.4 ” WC (-0.0075 Kpa to -0.099 Kpa) |
| Minimum flow rate | 0.5 GPM (1.893 l/m) |
| Connection sizes | Cold water inlet | 3/4″ |
| Hot water outlet size | 3/4″ | |
| Gas inlet | 3/4″ | |
| Power supply | Main supply | 120V AC, 60 Hz |
| Maximum power consumption | 200 W (max 2 A), 350 W (max 4 A) with external pump connected | |
| Materials | Casing | Cold rolled carbon steel |
| Heat exchangers |
Primary heat exchanger: stainless steel Secondary heat exchanger: stainless steel |
|
| Venting | Exhaust | 2″ or 3″ PVC, CPVC, approved polypropylene and stainless steel 2″ or 3″ special gas vent type BH (Class II, A/B/C) |
| Intake | 2″ or 3″ PVC, CPVC, approved polypropylene and stainless steel 2″ or 3″ special gas vent type BH (Class II, A/B/C) | |
| Vent clearances | 0″ to combustibles |
| High elevations | 10,100 feet for both NG or LP gas. Please refer to installation Manual for additional details and instructions. |
| Safety Devices | Flame rod, APS, ingnition operation detector, water temperature high limit switch, exhaust temperature high limit sensor, power surge fuse, burner high limit fuse, vent installation detector (VID) |
Navien reserves the right to change specifications at any time without prior notice.
NPN-199U premium features and benefits
Exclusive stainless steel heat exchanger.
The NPN series is the first and only non condensing tankless water heater with a stainless steel heat exchanger to deliver unmatched durability and performance.
NPN -
Exterior control panel allows you to adjust water temperature, operation status and troubleshooting.
Built-in Air Pressure Sensor (APS)
monitors the vent system for blockage, automatically compensates for the range of vent lengths, helps maintain proper air/gas ratio during operation, and ensures consistent Domestic Hot Water output during changing conditions.
Patented NaviTech™ stainless steel burner.
Designed and manufactured by Navien to burn gas at higher efficiency than other system on the market.
Recirculation control built into circuit board.
Ensures proper system setup, and reduces the need for additional components, saving installation time and cost.
Built-in Water Adjustment Valve (WAV) and Mixing Valve
control flow to maintain setpoint, and stabilize water temperature during flow changes