KD Navien Tankless Water Heaters
Tankless So Advanced, Its Simple
- ½” Gas pipe capable up to 24’ (NPE only)

- ComfortFlow Technology, insulated buffer tank and recirculation pump (“A” Models)
- Dual stainless steel heat exchangers
- 2’ PVC venting capable up to 60” (NPE only)
- Field Gas convertible (NPE only)
- Cascade capable without additional controllers
- 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.
Premium Condensing Tankless Gas Water Heater (NPE)
Compare Products
| Product | NPE-180A |
NPE-240A |
|
| Summary |
½” gas pipe capable up to 24’ Filed convertible gas system Ultra condensing efficiency Dual stainless steel heat exchangers Low NOx emissions (≤ 20ppm) SCH 40, 2” venting up to 60’ Cascading capable |
½” gas pipe capable up to 24’ Filed convertible gas system Ultra condensing efficiency Dual stainless steel heat exchangers Low NOx emissions (≤ 20ppm) SCH 40, 2” venting up to 60’ Cascading capable |
|
| Heat Capacity (Input) | Natural Gas | 15,000-150,000 BTU/h | 19,900-199,900 BTU/H |
| Propane Gas | 15,000-150,000 BTU/h | 19,900-199,900 BTU/H | |
| Energy Factor NG / LPG (DOE) | 0.95/0.96 | 0.95 / 0.97 | |
| Flow Rate (DHW) | 35⁰F(19⁰C) Temp Rise | 8.4 GPM (32 L/m) | 11.2 GPM (42 L/m) |
| 45⁰F(25⁰C) Temp Rise | 6.5 GPM (25 L/m) | 8.7 GPM (33 L/m) | |
| 77⁰F(43⁰C) Temp Rise | 3.8 GPM (14 L/m) | 5.1 GPM (19 L/m) | |
| Dimensions | 17.3″(W) x 27.4″(H) x 11.4″(D) | 17.3″(W) x 27.4″(H) x 13.2″(D) | |
| Weight | 75 lbs (34kg) | 82 lbs (37 kg) | |
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| Brochure | Download |
Operation Manual | Download |
| Installation Manual | Download |
Quick Installation Guide | Download |
| Gas Conversion Guide | Download |
Common Vent Guide | Download |


NPE-180A
NPE-240A
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