Dimensions
17.0″ W x 27.4″ H x 13.2″ D (43.2cm W x 69.6cm H x 33.5cm D)
Certification Summary
| NPE-240S-NG | NPE-240S-LP | ||
|---|---|---|---|
| Product approvals | CSA | Yes | Yes |
| NSF(Standard 5) | Yes | Yes | |
| Low Lead(<0.25%) | Yes | Yes | |
| SCAQMD 1146.2(NOx, <20ppm) | Yes | Yes | |
| AHRI Number | 8580769 | 8580769 | |
| Energy Star Certified | Yes | Yes | |
| Efficiency Ratings* | Uniform Energy Factor(UEF) | 0.97 | 0.97 |
| MAX GPM(67°F Rise) | 5.7 GPM (21.6 l/m) | 5.7 GPM (21.6 l/m) | |
| Annual Energy Consumption* (Residential) | Natural gas(Therms/Year) | 175.0 | |
| Propane(Gallons/Year) | 192 gal (726.8 l) | ||
| Estimated Operating Cost** | $191 | $463 | |
*Based on U.S. Department of Energy (DOE) test procedures.
**Based on a national average natural gas cost of $1.09/therm, propane cost of $2.41/gallon.
Temperature Rise
|
Temp Rise (°F)
|
30°F | 35°F | 40°F | 45°F | 50°F | 55°F | 60°F | 65°F | 70°F | 75°F | 80°F | 85°F | 90°F | 100°F | 110°F | 120°F | 130°F | 140°F |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
240 Series GPM
|
11.2 | 11.2 | 9.8 | 8.7 | 7.8 | 7.1 | 6.5 | 6 | 5.6 | 5.2 | 4.9 | 4.6 | 4.4 | 3.9 | 3.6 | 3.3 | 3 | 2.8 |
DHW Capacity
| Model | NPE-240S2 |
|---|---|
| Natural gas | 19,900 – 199,900 BTU/H (5.831 – 58.571 kWh) |
| Propane | 19,900 – 199,900 BTU/H (5.831 – 58.571 kWh) |
Operating Cost
HERS and LEED
Lower HERS home index score
U.S. Green Building Council LEED Points
| Water Heater | 1 Point |
|---|---|
| Location | 2 Points |
| Recirculation | 3 Points |
Specifications
| Item | NPE-240S2 | |
|---|---|---|
| Heat Capacity (input) | Natural gas | 19,900 – 199,900 BTU/H (5.831 – 58.571 kWh) |
| Propane | 19,900 – 199,900 BTU/H (5.831 – 58.571 kWh) | |
| Efficiency Ratings | UEF (NG & LP) | 0.97 |
| Flow rate (DHW) | 35°F temp rise | 11.2 GPM (42.4 l/m) |
| 45°F temp rise | 8.7 GPM (32.9 l/m) | |
| 67°F temp rise | 5.7 GPM (21.6 l/m) | |
| Dimensions | 17.0″ W x 27.4″ H x 13.2″ D (43.2cm W x 69.6cm H x 33.5cm D) | |
| Boiler weight | 75 lbs (34 kg) | |
| Installation Type | Indoor or outdoor wall-hung | |
| Venting Type | Forced draft direct vent | |
| Ignition | Electronic ignition | |
| Water pressure | 15 – 150 PSI (1.055 – 10.545 kg/cm2) | |
| Natural gas supply pressure (from source) | 3.5 ” WC – 10.5 ” WC (0.87 Kpa – 2.61 Kpa) | |
| Propane gas supply pressure (from source) | 8 ” WC – 13 ” WC (1.99 Kpa – 3.23 Kpa) | |
| Natural gas manifold pressure (min-max) | -0.05 ” WC – -0.58 ” WC (-0.012 Kpa – -0.14 Kpa) | |
| Propane gas manifold pressure (min-max) | -0.1 ” WC – -0.78 ” WC (-0.025 Kpa – -0.19 Kpa) | |
| Minimum flow rate | 0.5 GPM (1.893 l/m) | |
| Connection sizes | Coldwater inlet | 3/4″ |
| Hot Water Outlet Size | 3/4″ | |
| Gas inlet | 3/4″ | |
| Power supply | Main supply | 120V AC, 60Hz |
| Maximum power consumption | 200W (max 2A), 350W (max 4A) with external pump connected | |
| Materials | Casing | Cold-rolled carbon steel |
| Heat exchangers | Primary heat exchangers: stainless steel, secondary heat exchangers: stainless steel | |
| Venting | Exhaust | 2″ or 3″ PVC, CPVC, polypropylene / 2″ or 3″ special gas vent type BH (Class II, A/B/C) |
| Intake | 2″ or 3″ PVC, CPVC, polypropylene / 2″ or 3″ special gas vent type BH (Class II, A/B/C) | |
| Vent clearances | 0″ to combustibles | |
| Safety Devices | Flame rod, APS, ignition operation detector, water temperature high limit switch, exhaust temperature high limit sensor, power surge fuse | |
Navien reserves the right to change specifications at any time without prior notice.