Navien NFB-175 175,000 BTU/H Indoor wall-hung Condensing Heating Boiler
Navien NFB-175 HIGH EFFICIENCY CONDENSING HEATING BOILER 175,000 BTU/H Indoor wall-hung Residential/Commercial
Totally reinventing fire tube technology from the ground up
- Patented stainless steel heat exchanger —eliminates high stress point welds.
- Advanced user interface and controls with intuitive text display, simplifies boiler setup.
- Built-in hardware to connect a boiler system pump, 3 zone pumps or 3 zone valves.
- Optional NaviLink Wi-Fi remote control.
- Cascading and common venting capable.
- 10:1 Turn Down Ratio.
- AFUE 95.0% — Energy Star 2018 most efficient rating.
Patented compact stainless steel fire tube heat exchanger
Navien’s advanced patented stainless steel heat exchanger design is ASME‑Certified, “H” Stamped, and reduces high stress point weld failures common on other boilers. This compact, in‑house designed and manufactured heat exchanger uses the latest automated laser welding technology to deliver superior product quality.
Advanced user interface and controls
Navien’s new backlit control panel is simple and intuitive to use with its color‑coded plain text display, and an innovative click wheel that improves usability for all information input.
Built-in hardware to connect a boiler pump, 3 zone pumps or 3 zone valves
With Navien’s new PCB design you now have the ability to connect a boiler pump, 3 zone pumps or 3 zone valves, all integrated in the unit.
- Super condensing efficiency
- Patented compact stainless steel fire tube heat exchanger
- PVC exhaust venting capable: 2" up to 60'; 3” up to 150’
- ½" Gas pipe up to 24' (Subject to local code)
- TDR 10:1
- Advanced user interface and controls
- 175,000 BTU/H
Specifications
Dimensions: 17.3" W x 27.0" H x 17.3" D
Weight: 123.0lbs
Installation Type: Indoor wall-hung
Venting Type: Forced draft direct vent
Ignition: Electronic ignition
Natural gas supply pressure (from source): 3.5" WC to 10.5" WC
Propane gas supply pressure (from source): 8" WC to 13.5" WC
Natural gas manifold pressure (min-max): -0.05" WC to -0.7" WC
Propane gas manifold pressure (min-max): -0.1" WC to -0.68" WC
Connection Sizes: Gas inlet = 3/4"
Power Supply:
Main supply = 120V AC, 60Hz
Maximum power consumption = Less than 15A
Materials:
Casing = Cold rolled carbon steel
Heat exchangers = Primary and secondary: stainless steel
Venting:
Exhaust = 2" or 3" PVC, CPVC, PP and SS 2" or 3" special gas vent type BH (Class III, A/B/C)
Intake = 2" or 3" PVC, CPVC, PP and SS 2" or 3" special gas vent type BH (Class III, 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, Water pressure sensor
Ratings
Navien Condensing Boiler Space Heating Ratings
Model: NFB-175
Heating Input, MBH: Min 17.5 - Max 175
Heating Capacity, MBH: 161
Net AHRI Rating, Water, MBH: 140
AFUE, %: 95.0
Gas Input Ranges
Model: NFB-175
Range (BTU/H): 17,500 - 175,000
TDR: 10:1
Notice:
To avoid improper or unsafe installation, Navien products must be sold to licensed professionals only. Unauthorized sale of Navien products to consumers through the internet or any other e-commerce channels is strictly prohibited. Distributors of Navien products may not sell Navien products to anyone who does not follow Navien’s Resale Policy which Buyer has received and which is available online at www.navien.com.
Brand | Navien |
---|---|
UPC | 884954906690 |
BTU/hr | 175,000 |
Enable Dropship | No |