Distributor:

www.NavienAmerica.com

WH-E-11-01 (20110101)

Navien America Inc. 20 Goodyear, Irvine, CA 92618TEL: 949-420-0420, FAX: 949-420-0430

800-519-8794Toll Free:

Combination Gas Boiler

Combination Gas Boiler

An Ideal Green Solution for Central Heating and Domestic Hot Water!

Navien America Inc.

Navien’s Condensing Combination Gas Bolier

Navien’s Condensing TechnologyTo help explain "condensing technology," imagine the condensation on a glass of ice water. This condensation is

created inside Navien's condensing heat exchanger (secondary heat exchanger) from the incoming cold water cooling the hot gases inside the unit. Navien's state-of-the-art, stainless steel condensing heat exchanger then traps this condensation and uses it, making the whole process incredibly e�cient and economical. This condensation (originally vapors & gases) would normally escape through the vents in a conventional boiler. However, with Navien's cutting-edge technology, our Combination Boiler reuses the condensation, providing you with more e�cient and economical Combination Boiler.

Navien’s �n-type stainless steel heat exchanger, stainless steel condensing heat exchanger and premixed burner is what makes this unit so unique.

Ideal for domestic water heating and space-heating applications, such as in-�oor radiant heating, base-board heating, and fan assisted air handler heating applications.

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An Ideal Green Solution for Domestic and Hydronic HeatingNavien’s Condensing Combination Gas Boiler

Stainless Steel Heat Exchanger

Navien’s Condensing Combination Gas Boiler 0504

Navien Condensing Combination Gas Boiler

Why Choose Navien?

High grade stainless steel burner uses pre-mixed air and gas ratio providng a 10% to 100% �ring rate. The Eco Pre-mixed Burner generates at least 20% less CO2 and about 75% less harmful air pollutants, such as NOx, than other conventional boilers.

Stainless steel for the Combination’s integrated primary and secondary heat exchang-ers prevents corrosion and ensures a longer lifespan over copper heat exchangers.Stainless steel components also maintain consistency, even during long periods of use, and aid in e�ciency by capturing as much condensation as possible.

Eco-friendly, Premixed Burner

Extended Life, Stainless Steel Heat Exchanger

CondensingHeat Exchanger

Pre-mixed Burner

APS

GPS

Primary Heat Exchanger

Where Technology Meets Ecology, Combination BoilerNavien’s Condensing Combination Gas Boilers are the ideal solution for customers who need both domestic hot water and a space heating application. Unlike conventional boilers, Navien’s Combination Gas Boiler heats water only when needed, making it environmentally sound as well as cost e�cient.

Navien’s Combination Gas Boiler is more than capable of supplying hot water on demand and consistently due to the unit’s distinctive technology, including its multi-temperature sensors, water-�ow sensor and sensitive auto-burner control. When combined with Navien’s Condensing Tankless Water Heater, larger families can receive ample volumes of hot water and both units will run on demand, saving energy, water and money.

Highest Volume of Water, Cascade System

Superb Condensing E�ciency & PVC VentingNavien’s Condensing Combination Gas Boiler is equipped with dual stainless steel heat exchangers, making it e�cient and economical. The Combination Boiler o�ers low cost PVC venting solution for faster, simpli�ed installations.PVC is durable and easy to assemble, but installers and contractors will also appreciate the Combination’s ability to vent up to 100 feet with a maximum of six elbows* .* Each elbow deduct 5' o� of venting length

Navien’s Condensing Combination Gas Boiler

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Condensing Tankless Condensing Combi

Ready Link Cascade System with Navien’s Condensing Tankless Water Heaters Available

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The Ultimate in Energy E�ciency with Precision TechnologyThe Ultimate in Energy E�ciency with Precision TechnologyThe Ultimate in Energy E�ciency with Precision Technology

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• Aesthetic Appearance Suitable for Any Household’s Interior Design • High-Precision Water Temperature Control in 1˚F Increments • 24 Hour Time Scheduling for Space Heating• Easy-to-Use Button Type Control• Easy to read LCD display

Intelligent Remote Control System (Included in every unit)

The Combination’s built-in Control System is designed to keep the unit’s plumbing frost free in winter conditions.

Powerful Anti-Freeze Feature

Navien’s Condensing Combination Boiler automatically fills water into space heating pipes when the unit senses a water shortage.

Automatic Water Filling System

Automatic Water Fill Valve

NR-10PURemote controller

NR-10DU

Navien’s Gas-Air Ratio Control (GARC) System is highly advanced control system that modulates both the air and gas ratios required for optimal combustion. The ingenious built-in CO monitoring system will shut the Combination unit down in the event of excessive CO gases build up that can cause a hazardous condition.

Advanced Safety Operation, Gas-Air Ratio Control

APS measures Air Flow Rate by sensing the difference of air pressure of two points in the conduits.

∆P

Q

Diff

eren

ce o

f Air

Pres

sure

Flow Rate

AirFan

Venturi

Magnetic PoleHall-IC

+-

Air Pressure SensorMainPCB

How APS Works?

An outdoor sensor can be connected to Navien’s Condensing Combination Boiler. With this device the unit can automatically regulate the heating temperature according to changes in the temperature outdoors, allowing for precise indoor heat regardless of what the weather is doing outside. 

Weather Compensation Heating, K-Factor Heating

The Combination’s ASA Control System maintains a consistent, comfortable temperature throughout the home at all times, even taking into account the home’s design and outside temperature.

The secret to this system involves a built-in thermostat which senses even the slight-est temperature changes. The Combination’s space-heating application calculates the amount of heat required based on the difference between the return-water temperature and the indoor temperature, then automatically adjusts and controls the temperature accordingly.

Auto Sensing & Adaptive Heating, ASA Control System

Speci�cationsApplications: In-Floor Heating system, Baseboard Heating, Radiator or Radiant Panel, Air-Handler Hydro Heating System and More.

Min: 20,000 Btu/hr

Max: 199,000 Btu/hr

8.6 GPM

5.1 GPM

17” × 28” × 12”

91.0%

90.8%

84 lbs

Indoor /Outdoor Wall-Hung

Direct Vent

Electronic Ignition

15 - 150 PSI

7 - 30 PSI

3.75” W.C. ~ 10.5” W.C.

10.5” W.C. ~ 13.5” W.C.

0.5 GPM

1” NPT

3/4” NPT

1/2“ NPT

3/4” NPT

120VAC, 60Hz 200W (max 2A)

Primary Heat Exchanger: Stainless Steel

Condensing Heat Exchanger: Stainless Steel

SCH 40 3” PVC, SCH 40 2” PVC, Special Gas Vent Type BH Class IIA (PVC) in Canada

PVC, Flex Aluminum, Flex Stainless Steel, ABS

CH-240 ASMEItem Model

* Navien America reserves the right to change specifications at anytime without prior notice.

Heat Capacity (Input)

Flow Rate (DHW)

Dimensions (W x H x D )

CAFUE

Weight

Installation Type

Venting Type

Ignition

DHW Pressure (min-max)

Heating Pressure (min-max)

Gas Supply Pressure

(from source: min-max)

Minimum Flow Rate (DHW)

Connection Sizes

Power Supply

Heat Exchangers

Venting

(0” Clearance)

Item Warranty Period

Heat Exchanger 10 years

Item Warranty Period

Other Parts 5 years

Warranty Period

Navien’s Condensing Combination Gas Boiler Navien’s Condensing Combination Gas Boiler

45˚F Rise

77˚F Rise

Natural Gas

Propane Gas

Natural Gas

Propane Gas

Heating Supply / Return

DHW Inlet / Outlet

Auto Feeder

Gas Inlet

Main Supply

Exhaust (ø3”)

Intake (ø3”)