Navien NCB-210E Condensing Combination Water Heater/Boiler


$2209.00


Retail Price: $4190.00
Weight: 100.00 lbs
MPN: NCB210E

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Updated and improved NCB-E series combination boiler: Where Technology Meets Ecology

Heats water only when needed, making it environmentally sound and cost efficient.
It's 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.
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

High turn down ratio reduces wasted energy and boiler cycling

→ The NCB's sophisticated gas flow control system provides a turn down ratio of 6:1 for heating and 11:1 for DHW. This reduces energy waste and excessive boiler cycling and enhances temperature control for domestic hot water use.

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
→ Schedule 40 2" venting up to 60 feet, but with no elbows
→ 3" vent can be used up to 150' on standard 2" x 3" adapters, but with no elbows

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 LP/NG Convertible

→ Allows easy conversion from/to natural gas and liquid propane. Important:  Navien water heaters are shipped ready for natural gas. For easy conversion to liquid propane, consult the Gas Conversion Guide.

Low gas pressure operation

→ Navien's innovative negative pressure gas valve ensures normal operation even with a low gas pressure of 3.5" of water column.

Automatic Water Filling System

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

Internal Circulation Pump Included

→ Primary circulation pump and air vent for added value and convenience

Powerful Anti-Freeze Feature

→ Built-in Control System prevents the water inside unit from freezing in winter under most non-severe conditions.

Backlit LED Front Panel Command Center

→ Allows you to adjust the hot water temperature and boiler functions such as outdoor reset curves, heating setback, low water safety control, output capacity, and water fill pressure.

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

Certifications

→ ASME, AHRI, CSA. NSF/ANSI 372 for Low Lead (DHW only). SCAQMD Rule 1146.2 Type 1 which complies with 14 ng/J or 20 ppm NOx at 3% O2.

asme-logo NSF logo ahri-seal CSA-certified

Specifications

  NCB-150E NCB-180E NCB-210E NCB-240E
Space Heating Specific Specs
Space Heating Gas Input, MBH  12,000-60,000 14,000-80,000 18,000-100,000 18,000-120,000
Heating Capacity, MBH
(US DOE test procedures) 
56 75 94 112

Net AHRI Rating, Water, MBH
(based on piping and pickup allowance of 1.15) 

49 65 82 97
AFUE (annual fuel utilization efficiency) 95%
Water pressure (hydronic) 12 to 30 PSI
Heating Supply/Return Connection 1" NPT
More Specifications
Domestic Hot Water ("DHW") Gas Input 12,000-120,000 BTU/H 14,000-150,000 BTU/H 18,000-180,000 BTU/H 18,000-199,900 BTU/H
Flow Rate that results in a 77°F (43°C) water temperature increase 2.6 GPM (9.8 L/m)  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)
Product Weight 66 lbs (30kg) 74 lbs (34kg) 84 lbs (38kg) 84 lbs (38kg)
 Installation Type Interior Wall-Hung
 Venting Type Forced Draft Direct Vent
Ignition Electronic Ignition
Water Pressure (DHW) 15-150 PSI
Natural Gas Supply Pressure (from source) 3.5"-10.5" WC
 Propane Gas Supply Pressure (from source) 8.0" to 13.5" WC
 Natural Gas Manifold Pressure (min to max) -0.08" WC to -0.34” WC -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) -0.08" WC to -0.30" WC -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)
DHW Inlet/Outlet Connection 3/4" NPT
Gas Inlet Connection 3/4" NPT
Auto Feeder Connection 1/2" NPT
Condensate Outlet Connection 1/2" NPT
Main Power Supply 120V AC, 60Hz
 Maximum Power Consumption 200W (up to 2 amps)
Casing Cold Rolled Carbon Steel
Heat Exchangers Stainless Steel Primary, Secondary, and DHW Heat Exchanger
Exhaust Venting 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)
 Vent Clearances no required clearance distance to combustibles
 Safety Devices

Water Temperature High Limit Switch, Ignition Operation Detector,
Flame Rod, APS, Gas Valve Operation Detector, Exhaust Temperature High Limit Sensor

Downloads

Installation & Operation Manual

Gas Conversion Guide

Box contents

Combi-boiler
Installation & Operation Manual
User's Information Manual
Quick Installation Manual
Wall Mounting Bracket
Tapping Screws & Anchors
LP or NG Conversion Kit
2" Vent Termination Caps
2" Wall Flanges
Pressure Relief Valve for Heating
Flow Restrictors
Spare Parts (fuse, etc.)

FAQ (Frequently Asked Questions)

Q1: What is the difference between the NCB-210 and the NCB-210E?
A1: The NCB-180E has five differences: It has an added integrated air vent on top of the internal circulator to purge air from the boiler system, a pressure release valve ("PRV") on the top of the unit, a Grundfos recirc pump, a quieter fan, and a more appealing, beveled design on the front cover.

Q2: 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-210E 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.

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.

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1 Most useful customer reviews
Pamela
Jun 12, 2016
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