Navien NPE-240S Condensing Tankless Water Heater
- ½ gas pipe capable up to 24′
- Field convertible gas system
- Ultra condensing efficiency
- Dual stainless steel heat exchanges
- Low NOx emissions (20ppm)
- SCH 40, 2″ venting up to 60′
- Cascading capable
| Item | NPE-240S | |
|---|---|---|
| Heat Capacity (input) | Natural gas | 19,900 – 199,900 (BTU/H) |
| Propane gas | 19,900 – 199,900 (BTU/H) | |
| Efficiency Ratings | UEF (NG & LP) | 0.97 |
| EF (Canada NG & LP) | 0.99 | |
| Flow rate (DHW) | 35°F (19°C) temp rise | 11.2 GPM (42.4 L/m) |
| 45°F (25°C) temp rise | 8.7 GPM (32.9 L/m) | |
| 67°F (37°C) temp rise | 5.7 GPM (21.6 L/m) | |
| Dimensions | 17.0″ W x 27.4″ H x 13.2″ D | |
| Weight | 75.0lbs (34kg) | |
| Installation Type | Indoor or outdoor wall-hung | |
| Venting Type | Forced draft direct vent | |
| Ignition | Electronic ignition | |
| Water Pressure | 15.0-150.0 psi | |
| Natural gas supply pressure (from source) | 3.5″ WC to 10.5″ WC | |
| Propane gas supply pressure (from source) | 8″ WC to 13″ WC | |
| Natural gas manifold pressure (min-max) | -0.05″ WC to -0.58″ WC | |
| Propane gas manifold pressure (min-max) | -0.1″ WC to -0.78″ WC | |
| Minimum flow rate | 0.5 GPM (1.9 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, 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 products come with a limited warranty covering labor, parts and the heat exchanger. The following warranty periods begin to run from the date of original installation. The date of original installation must be provided to Navien, and upon request, proof of the original installation date must also be provided to Navien.
When the product is installed in a new construction, the commencement date shall be dated upon which the end-user takes title to the property.
