- Commercial / Residential / Dual: Dual
- Energy Factor: 0.96
- Flow Rate: 10.1 gpm
- Fuel Type: Liquid Propane / Natural Gas
- Heating Capacity: 150,000 BTU/hr
- Vent Size: 2 in, 3 in
- Vent Type: Forced Draft Direct
- Condensing / Non-Condensing: Condensing
- Gas Connection: 1/2 in NPT
- Ignition Type: Electronic
- Manufacturer: NAVIEN INC
- Manufacturer #: NPE-180S2
- Mounting Type: Wall-Hung / Racks
- Series: NPE-S2
- Type: Standard
- Water Connection: 3/4 in NPT
NPE-180S2 150BTU Condensing Tankless Water Heater
- 20049622B_NPE-A2_S2_Quick Installation Guide_EN_210108.pdf(Instruction/Installation Manual)
- Navien NPE Commercial Application Guide 2105.pdf(Application Guide)
- NPE-2 Spec Sheet V 1.1 08092021 (1).pdf(Specification Sheet)
- NPE-2 User's_Manual_EN_201202.pdf(Owners/User Manual)
- NPE-2_Installation_Manual_EN_210216.pdf(Instruction/Installation Manual)
- NPE-A2,S2_LP Conversion Guide.pdf(Application Guide)
- Remote Controller (NR-21DU) Manual (1).pdf(Owners/User Manual)