Navien NCB-210 Condensing Gas Combination Boiler


$2229.00


Retail Price: $3050.00
Weight: 85.00 lbs
MPN: NCB-210

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Combination Boiler: Where Technology Meets Ecology

→ Heats water only when needed, making it environmentally sound and cost efficient.
→ The ideal solution for people who need both a space heating application and a domestic hot water heater.

Navien-CH-ASME

Benefits of Hydronic Heating

→ Clean and comfortable: no air movement means low likelihood for creating dust or excessively dry air in the dwelling
→ Silent: silent heating, with no blowers needed for forced circulation.
→ Comfort: makes people feel warm and comfortable by keeping the floor warm and indoor air fresh.
→ Coverage: radiant heat from the floor to the ceiling.
→ Economical: radiant heat from the floor can send warmth throughout the house even hours after turning off your heater.

Features

Ultra Condensing Efficiency

→ Navien's Condensing Technology allows high efficiency heating
→ Significant energy savings over traditional water heaters

Dual Stainless Steel Heat Exchangers

→ Longer life expectancy than copper heat exchangers. More resistant to corrosion
→ Less mineral scaling and deposits

Low-nox-emissionsLow NOx Emissions

→ New metal fiber burner delivers a consistent gas/air mixture
→ Less greenhouse gas emissions and acid rain
→ SCAQMD 1146.2 compliant

2" PVC, CPVC, Polypropylene Venting

→ 2" vent allows you to install a flue through an existing vent
→ 3" vent can be used up to 150' on standard 2" x 3" adapters

Uses Existing 1/2" Gas Line

→ Dual venturi fan and negative pressure gas valve for better adaptability with low gas pressure
→ Installation in 1/2" gas lines up to 24 feet

Field Convertible

→ Allows easy conversion from/to natural gas and liquid propane

Automatic Water Filling System

→ Automatically fills the space heating pipes with water when the unit senses water shortage.

Powerful Anti-Freeze Feature

→ Built-in Control System keeps the unit's plumbing frost free in winter.

Front Panel Command Center

  •  Easy setup
  •  Self-diagnostics
  •  User friendly interface
  •  Convertible display from °F to °C
  •  Cascade operation status display
  •  Temperature and water flow rate indicator

asme-logo NSF logo ahri-seal CSA-certified

Specifications

Important:  Navien water heaters are shipped ready for natural gas. Consult the Gas Conversion Guide for use with liquid propane.

  NCB-180 NCB-210 NCB-240
Space Heating Energy Input 14,000-80,000 BTU/H 18,000-100,000 BTU/H 18,000-120,000 BTU/H
Domestic Hot Water Energy Input 14,000-150,000 BTU/H 18,000-180,000 BTU/H 18,000-199,900 BTU/H
AFUE (annual fuel utilization efficiency) 95% 95% 95%
Flow Rate resulting in a 77°F (43°C) Temp Rise  3.4 GPM (12.9 L/m) 4.0 GPM (15.1 L/m) 4.5 GPM (17.0 L/m)
Dimensions  17"(W) x 28"(H) x 12"(D) 17"(W) x 28"(H) x 12"(D)  17"(W) x 28"(H) x 12"(D)
Weight 74 lbs (34kg) 84 lbs (38kg) 84 lbs (38kg)
 Installation Type Indoor Wall-Hung Indoor Wall-Hung Indoor Wall-Hung
 Venting Type Forced Draft Direct Vent Forced Draft Direct Vent Forced Draft Direct Vent
Ignition Electronic Ignition Electronic Ignition Electronic Ignition
Water Pressure (Hydronic/DHW) 12-30 PSI / 15-150 PSI 12-30 PSI / 15-150 PSI 12-30 PSI / 15-150 PSI
Natural Gas Supply Pressure (from source) 3.5"-10.5" WC 3.5"-10.5" WC 3.5"-10.5" WC
 Propane Gas Supply Pressure (from source) 8.0"-13.5" WC 8.0"-13.5" WC 8.0"-13.5" WC
 Natural Gas Manifold Pressure (min to max) -0.07" WC to -0.66” WC -0.05" WC to -0.36" WC -0.06" WC to -1.2" WC
Propane Gas Manifold Pressure (min to max) -0.06" WC to -0.62" WC -0.1" WC to -0.66" WC -0.03" WC to -0.98" WC
 Minimum Flow Rate (DHW) 0.5 GPM (1.9 L/m) 0.5 GPM (1.9 L/m) 0.5 GPM (1.9 L/m)
Heating Supply/Return  Connection 1" NPT 1" NPT 1" NPT
DHW Inlet/Outlet Connection 3/4" NPT 3/4" NPT 3/4" NPT
Gas Inlet Connection 3/4" NPT 3/4" NPT 3/4" NPT
Auto Feeder  Connection 1/2" NPT 1/2" NPT 1/2" NPT
Condensate Outlet  Connection 1/2" NPT 1/2" NPT 1/2" NPT
Main Power Supply 120V AC, 60Hz 120V AC, 60Hz 120V AC, 60Hz
 Maximum Power Consumption 200W (up to 2 amperes) 200W (up to 2 amperes) 200W (up to 2 amperes)
Casing Cold Rolled Carbon Steel Cold Rolled Carbon Steel Cold Rolled Carbon Steel
Heat Exchangers Primary/Secondary Heat Exchanger: Stainless Steel DHW Heat Exchanger: Stainless Steel Primary/Secondary Heat Exchanger: Stainless Steel DHW Heat Exchanger: Stainless Steel Primary/Secondary Heat Exchanger: Stainless Steel DHW Heat Exchanger: Stainless Steel
Exhaust Venting 2” or 3" PVC, CPVC, Polypropylene 2” or 3" Special Gas Vent Type BH (Class II, A/B/C) 2” or 3" PVC, CPVC, Polypropylene 2” or 3" Special Gas Vent Type BH (Class II, A/B/C)  2” or 3" PVC, CPVC, Polypropylene 2” or 3" Special Gas Vent Type BH (Class II, A/B/C)
 Intake Venting 2” or 3" PVC, CPVC, Polypropylene 2” or 3" Special Gas Vent Type BH (Class II, A/B/C) 2” or 3" PVC, CPVC, Polypropylene 2” or 3" Special Gas Vent Type BH (Class II, A/B/C) 2” or 3" PVC, CPVC, Polypropylene 2” or 3" Special Gas Vent Type BH (Class II, A/B/C)
 Vent Clearances 0" to Combustibles 0" to Combustibles 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 Flame Rod, APS, Gas Valve Operation Detector, Ignition Operation Detector, Water Temperature High Limit Switch, Exhaust Temperature High Limit Sensor Flame Rod, APS, Gas Valve Operation Detector, Ignition Operation Detector, Water Temperature High Limit Switch, Exhaust Temperature High Limit Sensor33

Downloads

Installation and Operation Manual

Gas Conversion Guide

FAQ (Frequently Asked Questions)

Q1: I would like to buy this Navien heater to replace another water heater that uses metal vent pipe. I read the manual that describes various PVC products to use for venting. The manual does not state that metal should not be used. Are there any performance issues if I use my metal exhaust vent pipe and not the PVC type pipe?
A1: Yes, the reason for using PVC versus metal is for energy efficiency. Navien recommends using PVC because the NPE and NR heaters are condensing type heaters. Using PVC provides the maximum condensing function. The Navien heaters will run more efficiently with PVC.

Yes, you could use your metal venting instead of PVC; the heater will still work safely. Alternatively, you could install the PVC inside the metal venting, using the metal venting as a chase (like a conduit).

Q2: Does the NCB-210 ship from the factory configured for natural gas or propane?
A2: It comes configured for natural gas with an easy conversion kit to liquid propane included.

Q3: What is the difference between the NCB and the NCB-E series?
A3: The NCB-E series has five differences: It has an added pressure release valve ("PRV") on the top of the unit, an integrated air vent, a Grundfos pump, a quieter fan, and a more appealing, beveled design on the front cover.

Installation Help and Recommendations

We recommend that you have a professional tankless water heater installer review the above recommendations. Improper installation may cause loss of life and/or property. Need an installer? Get 4 FREE Tankless Water Heater Installation Estimates Now. It's Quick and Easy!
Contractors: Get Targeted Consumer Leads in Your Area Now.
Contractors: Apply for Wholesale Pricing from GadgetsGo.com.

The NAVIEN and KD NAVIEN, and ComfortFlow trademarks are the property of Navien America, Inc. and/or KyungDong Navien.

A3: The NCB-E series has five differences: It has an added pressure release valve ("PRV") on the top of the unit, an integrated air vent, a Grundfos pump, a quieter fan, and a more appealing, beveled design on the front cover.

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1 Most useful customer reviews
meryl
Aug 7, 2016
This customer purchased this item.
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