Navien NCB-240 Condensing Gas Combination Boiler
NCB-240
- 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 | CH-180ASME | |
Heat Capacity (Input) | Min : 17,000 Btu/hr Max: 150,000 Btu/hr | |
Flow Rate(DHW) | 77⁰F Rise | 3.4 GPM |
Dimensions | 17” × 28” × 12” | |
CAAFUE | Natural Gas | 91% |
Propane Gas | 92% | |
Weight | 74 lbs | |
Installation Type | Indoor / Outdoor Wall-Hung | |
Venting Type | Direct Vent | |
Ignition | Electronic Ignition | |
DHW Pressure (min-max) | 15 – 150 PSI | |
Heating Pressure (min-max) | 7 – 30 PSI | |
Gas Supply Pressure (from source : min-max) | Natural Gas | 5.5”W.C. ~ 10.5”W.C. |
Propane Gas | 10.5”W.C. ~ 13.5”W.C. | |
Minimum Flow Rate(DHW) | 0.5 GPM | |
Connection Sizes | Heating Supply / Return | 1” NPT |
DHW Inlet / Outlet | 3/4” NPT | |
Auto Feeder | 1/2” NPT | |
Gas Inlet | 3/4” NPT | |
Power Supply | Main Supply | 120VAC, 200W (max 2A) |
Heat Exchangers | Primary Heat Exchanger : Stainless Steel Condensing Heat Exchanger : Stainless Steel | |
Venting (o” Clearance) | Exhaust (¢3″) | SCH 40 3″ PVC, SCH 40 3″ Polypropylene, SCH 80 3″ CPVC |
Intake (¢3″) | PVC, Flex Aluminum, Flex Stainless Steel, ABS |