Navien NPE240S2 199,900 btu/h Ultra High Efficiency Standard Condensing Tankless Water Heater
Features:
1/2 gas pipe capable up to 24′
Field convertible gas system
Ultra condensing efficiency
Dual stainless steel heat exchangers
Low NOx emissions (20ppm)
SCH 40, 2″ venting up to 75′
Cascading capable
EZNav multi-line control panel
Built-in HotButton control panel
Common vent up to 12 units
In Stock
Starting As Low As
Starting As Low As
$55/month
Categories:
Plumbing, Tankless Water Heaters
Looking for Payment Plans...?
Click Here to Check Payment Plan Eligibility- Product Description
- Additional Info
| Capacity | 194 gal |
| Coating | White |
| End Connection | NPT x NPT |
| End Connection 1 | NPT |
| End Connection 2 | NPT |
| Energy Star Compliant | Yes |
| Height | 22-3/10 in. |
| Lead Law Compliant | Yes |
| Material | Stainless Steel |
| MBH | 199 |
| Power Source | Gas |
| Weight | 72.97 lb |
| Application | Residential; Commercial |
| Product Type | Residential Tankless Water Heaters |
| Energy Factor | 0.96 |
| Fuel Type | Liquid Propane Gas; Natural Gas |
NPE-240S2 QuickFacts
Dimensions
43.9cm W x 69.6cm H x 33.5cm D (17.3″ W x 27.4″ H x 13.2″ D)
- Front view of NPE-240S2 condensing tankless water heater
- Overhead view of NPE-240S2 condensing tankless water heater
- Bottom view of NPE-240S2 condensing tankless water heater
- NPE-240S2 condensing tankless water heater diagram legend
Certification Summary
| All NPE-2 models convertible NG ↔ LP | Yes |
| CSA | Yes |
| NSF (Standard 5) | Yes |
| Low Lead (<0.25 percent) | Yes |
| SCAQMD 1146.2 (NOx <20ppm) | Yes |
| AHRI number | 206368362 |
| Energy Star certified | Yes |
| ANCE NOM certified | Yes |
Efficiency Ratings
| Uniform Energy Factor (UEF) | 0.96 |
| MAX l/m (37°C Rise) | 5.8 |
| Annual Energy Consumption (NG) | 177.0 therms/year |
| Annual Energy Consumption (LP) | 734.4 L (194 gal) |
| Natural Gas Estimated Cost | $247 |
| Propane Estimated Cost | $599 |
*Based on U.S. DOE test procedures. Costs based on CA$1.40 per therm NG and CA$3.09 per gallon propane.
Temperature Rise
| Temp Rise | NPE-240S2 Flow |
|---|---|
| 19.4°C (35°F) | 42.4 l/m (11.2 GPM) |
| 22.2°C (40°F) | 37.1 l/m (9.8 GPM) |
| 25°C (45°F) | 32.9 l/m (8.7 GPM) |
| 27.8°C (50°F) | 29.5 l/m (7.8 GPM) |
| 30.6°C (55°F) | 26.9 l/m (7.1 GPM) |
| 33.3°C (60°F) | 24.6 l/m (6.5 GPM) |
| 36.1°C (65°F) | 22.7 l/m (6 GPM) |
| 38.9°C (70°F) | 21.2 l/m (5.6 GPM) |
| 41.7°C (75°F) | 19.7 l/m (5.2 GPM) |
| 44.4°C (80°F) | 18.5 l/m (4.9 GPM) |
| 47.2°C (85°F) | 17.4 l/m (4.6 GPM) |
| 50°C (90°F) | 16.7 l/m (4.4 GPM) |
| 55.6°C (100°F) | 14.8 l/m (3.9 GPM) |
| 61.1°C (110°F) | 13.6 l/m (3.6 GPM) |
| 66.7°C (120°F) | 12.5 l/m (3.3 GPM) |
| 72.2°C (130°F) | 11.4 l/m (3 GPM) |
| 77.8°C (140°F) | 10.6 l/m (2.8 GPM) |
DHW Capacity
| Natural gas | 13,300 – 199,900 BTU/h |
| Propane | 13,300 – 199,900 BTU/h |
Operating Cost Comparison
| System | Usage | Annual Cost |
|---|---|---|
| Navien Tankless | 177.0 therms | $247 |
| Other Tankless | 228 therms | $319 |
| 189 L Tank | 293 therms | $409 |
Specifications
| Heat Capacity (NG) | 13,300 – 199,900 BTU/h |
| Heat Capacity (LP) | 13,300 – 199,900 BTU/h |
| UEF | 0.96 |
| Flow Rate 19°C Rise | 42.4 l/m (11.2 GPM) |
| Flow Rate 25°C Rise | 32.9 l/m (8.7 GPM) |
| Flow Rate 37°C Rise | 22 l/m (5.8 GPM) |
| Dimensions | 43.9cm W x 69.6cm H x 33.5cm D |
| Weight | 33.1 kg (73 lbs) |
| Installation | Indoor or outdoor wall-hung |
| Venting | Forced draft direct-vent |
| Ignition | Electronic ignition |
| Water Pressure | 1.05-10.55 kg/cm² (15-150 PSI) |
| NG Supply Pressure | 3.5 WC to 10.5 WC |
| LP Supply Pressure | 8 WC to 13 WC |
| NG Manifold Pressure | -0.03 WC to -0.96 WC |
| LP Manifold Pressure | -0.02 WC to -0.96 WC |
| Minimum Flow Rate | 1.9 l/m (0.5 GPM) |
| Cold Water Inlet | 3/4 NPT |
| Hot Water Outlet | 3/4 NPT |
| Gas Inlet | 3/4 NPT |
| Power Supply | 120V AC, 60 Hz |
| Max Power | 200 W, 350 W w/ external pump |
| Materials | Cold rolled carbon steel casing; stainless steel primary & secondary heat exchangers |
| Venting Options | PVC, CPVC, polypropylene, stainless steel, 2 or 3 inch |
| Vent Clearances | 0 to combustibles |
| High Elevation Rating | Up to 10,100 ft |
| Safety Devices | Flame rod, APS, ignition detector, temp limit switches, exhaust temp sensor, surge fuse, burner limit fuse, VID |
Navien reserves the right to change specifications at any time without notice.
