Navien NPE-240S Condensing Tankless Gas Water Heater
NPE-240S
- ½” gas pipe capable up to 24’
- Field convertible gas system
- Ultra condensing efficiency .99EF
- Dual stainless steel heat exchangers
- Low NOx emissions (≤ 20ppm)
- SCH 40, 2” venting up to 60’
- Cascading capable
Features
Spicifications
Features
Ultra Condensing Efficiency
- Navien’s Condensing Technology offers the high efficiency.
- Money and energy savings over tank type water heaters and traditional water heaters.
Two Stainless Steel Heat Exchangers
- Provides longer life expectancy as they are highly resistant to corrosion and erosion compared to copper heat exchangers.
- Reduces minerals deposits.
Low NOx Emissions (≤ 20ppm)
- New metal fiber burner is designed to deliver a consistent air/gas mixture improving combustion efficiency.
- Result in less acid rain and less green house effect.
- Comply with SCAQMD 1146.2 strict NOx emissions standard.
2” PVC, CPVC, Polyprophylene Venting Up To 60’
- 2” venting option allows for a flue to be pulled through the existing vent.
- 3” vents can be used up to 150’ with standard 2” x 3” adapters.
Better Adaptability to Gas System
- Utilizes Existing 1/2″ Gas Line.
- The negative pressure gas valve and fan with dual venturi operation allows for better adaptability to low gas pressure applications.
- Makes it possible for the NPE to be installed ½” gas lines up to 24’.
Field Convertible
- NPE models allow for easy convertibility from NG to LP.
Ultra Condensing Efficiency
- Less Water Pressure Drop.
- Simple modular for water path minimizes water pressure drop.
- Modular design for water path make maintenance easier and service can be performed easily in the field.
NAVIEN’S READY LINK CASCADE SYSTEM
- Multiple units can be connected in parallel for larger applications.
- Navien’s units have built in controls for multi-unit system allowing easy setting.
- No extra control boards are required, reducing installation costs.
- Easy wiring between units and easy setting of the parent and child for multi-unit system.
- 16 units can be linked as one group and cascade as many groups as you need.
- Cascading allows for added redundancy insuring on-demand hot water in all situations.
- Small and compact wall-hung design allows multi-unit system even in a confined area.
- Used for hotels, schools, hospitals, beauty shops, restaurants, health centers, and more.
Front Panel Command Center
- Self-diagnostics.
- Displays temperature and water flow rate.
- Displays status of cascade operation.
- Convertible display from °F to °C.
- User Friendly Interface.
- Easy setup.
Remote Control (Optional)
- Hot water temperature control.
- Recirculation timer setting.
- Function to set the number of initial activating water heaters for cascade system.
- Temperature set-up for cascade system with external tanks.
Spicifications
| Data Field | NPE-240S | |
| Heat Capacity (Input) | Natural Gas | 19,900-199,900 BTU/h |
| Propane Gas | 19,900-199,900 BTU/h | |
| Energy Factor NG / LPG (DOE) | 0.99/0.99 | |
| Flow Rate (DHW) | 35⁰F(19⁰C) Temp Rise | 11.1 GPM (42 L/m) |
| 45⁰F(25⁰C) Temp Rise | 8.7 GPM (33 L/m) | |
| 77⁰F(43⁰C) Temp Rise | 5.1 GPM (19 L/m) | |
| Dimensions | 17.3″(W) x 27.4″(H) x 13.2″(D) | |
| Weight | 75 lbs (34kg) | |
| Installation Type | Indoor or Outdoor Wall-Hung | |
| Venting Type | Forced draft direct vent | |
| Ignition | Electronic Ignition | |
| Water Pressure | 15-150 PSI | |
| Natural Gas Supply Pressure (from source) | 3.5″-10.5″ WC | |
| Propane Gas Supply Pressure (from source) | 8″-13″ WC | |
| Natural Gas Manifold Pressure (min to max) | -0.04″ WC to -0.58″ WC | |
| Propane Gas Manifold Pressure(min to max) | -0.02″ WC to -0.78″ WC | |
| Minimum Flow Rate | 0.5 GPM (1.9 L/m) | |
| Connection Sizes | Cold Water Inlet | 3/4″ NPT |
| Hot Water Outlet | 3/4″ NPT | |
| Gas Inlet | 3/4″ NPT (suitable for use with 1/2″ rigid gas pipe; refer to installation manual for sizing criteria) | |
| Power Supply | Main Supply | 120 V AC, 60Hz |
| Main Supply | 200 W (max 2A), 350W (max 4A) with external pump connected | |
| Materials | Casing | Cold rolled carbon steel |
| Heat Exchangers | primary and 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 | |