Navien NCB-180 Condensing Gas Combination Boiler
NCB-180
- Super condensing efficiency
- Dual stainless steel heat exchangers
- SCH40, 2” PVC venting up to 60’
- ½” Gas pipe up to 24’
- Automatic water filling system
- integrated controls
Features
Spicifications
Features
Ultra Condensing Efficiency
- Navien’s Condensing Technology offers high efficiency.
- Money and energy savings over tank-type water heaters and traditional water heaters.
Two Stainless Steel Heat Exchangers
- Provides a longer life expectancy as they are highly resistant to corrosion and erosion compared to copper heat exchangers.
- Reduces mineral deposits.
- Low NOx Emissions (≤ 20ppm)
2” PVC, CPVC, Polypropylene 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 allow for better adaptability to low gas pressure applications.
- Makes it possible for the NPE to be installed on ½” gas lines up to 24’.
Field Convertible
- NCB models allow for easy convertibility from NG to LP.
Where Technology Meets Ecology, Combination Boiler
- The ideal solution for customers who need both domestic hot water and a space heating application.
- Heats water when needed, making it environmentally sound as well as cost-efficient.
- Low NOx Emissions (≤ 20ppm)
Hydronic Heating Benefits
- Clean: little chance to cause dust or lower humidity because there is no air movement.
- Silent: offers silent heating because no blowers are needed for forced circulation.
- Comfort: keeps floors warm but indoor air fresh, making people feel warm and comfortable.
- Coverage: radiant heat makes heating from floor to ceiling possible.
- Economical: radiant heat in the floors can transmit warmth throughout the house hours after turning off the heater.
Automatic Water Filling System
- Automatically fills water into space heating pipes when the unit senses a water shortage.
Powerful Anti-Freeze Feature
- The Combi’s built-in Control System is designed to keep the unit’s plumbing frost-free in winter conditions.
Spicifications
Data Field | NCB-180 |
---|---|
Gas Input – Space Heating | 14,000-80,000 BTU/H |
Gas Input – Domestic Hot Water | 14,000-150,000 BTU/H |
Flow Rate (DHW) – 77°F (43°C) Temp Rise | 3.4 GPM (12.9 L/m) |
Dimensions | 17″(W) x 28″(H) x 12″(D) |
Weight | 74 lbs (34kg) |
Installation Type | Indoor Wall-Hung |
Venting Type | Forced Draft Direct Vent |
Ignition | Electronic Ignition |
Water Pressure (Hydronic/DHW) | 12-30 PSI / 15-150 PSI |
Natural Gas Supply Pressure (from source) | 3.5″-10.5″ WC |
Propane Gas Supply Pressure (from source) | 8.0″-13.5″ WC |
Natural Gas Manifold Pressure (min to max) | -0.07″ WC to -0.66” WC |
Propane Gas Manifold Pressure (min to max) | -0.06″ WC to -0.62″ WC |
Minimum Flow Rate (DHW) | 0.5 GPM (1.9 L/m) |
Connection Sizes – Heating Supply/Return | 1″ NPT |
Connection Sizes – DHW Inlet/Outlet | 3/4″ NPT |
Connection Sizes – Gas Inlet | 3/4″ NPT |
Connection Sizes – Auto Feeder | 1/2″ NPT |
Connection Sizes – Condensate Outlet | 1/2″ NPT |
Power Supply – Main Supply | 120V AC, 60Hz |
Maximum Power Consumption | 200W (up to 2 amperes) |
Materials – Casing | Cold Rolled Carbon Steel |
Materials – Heat Exchangers | Primary/Secondary Heat Exchanger: Stainless Steel DHW Heat Exchanger: Stainless Steel |
Venting – Exhaust | 2” or 3″ PVC, CPVC, Polypropylene 2” or 3″ Special Gas Vent Type BH (Class II, A/B/C) |
Venting – 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, Gas Valve Operation Detector, Ignition Operation Detector, Water Temperature High Limit Switch, Exhaust Temperature High Limit Sensor |