Navien NHB-110 Boiler Instruction Manual

Manual Navien NHB-110 Boiler Instruction Manual

Navien NHB-110 Boiler Instruction Manual

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Navien NHB-110 Boiler

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Navien NHB-110 Boiler

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Navien NHB-110 Boiler

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Navien NHB-110 Boiler Instructions

Here we offer the Navien NHB-110 Boiler manual completely free and in English. We have cataloged this manual in the Boilers section on Manualverse, and it has been rated by 1 users with an average rating of 5. If you have any specific questions about Navien NHB-110 Boiler, we suggest checking the Frequently Asked Questions (FAQs) section of this manual.


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Navien NHB-110 Boiler Specifications

Feature Specification
Model Series Navien NHB Condensing Boilers (055, 080, 110, 150)
Factory Water Temperature Setting 120°F (49°C)
Space Heating Supply Water Temp. Range 104°F (40°C) to 180°F (82°C)
Space Heating Return Water Temp. Range 86°F (30°C) to 149°F (65°C)
DHW Indirect Supply Water Temp. Range 104°F (40°C) to 180°F (82°C)
Minimum System Cold Fill Pressure 12 psi
Residential Warranty - Labor 1 Year
Residential Warranty - Parts 5 Years
Residential Warranty - Heat Exchanger 10 Years (pro-rated up to 15 years)
Commercial Warranty - Labor 1 Year
Commercial Warranty - Parts 3 Years
Commercial Warranty - Heat Exchanger 7 Years (pro-rated up to 10 years)
Approved Usage USA and Canada only

Navien NHB-110 Boiler Details

The Navien NHB-110 is a model within the NHB series of high-efficiency condensing boilers, designed for reliable space heating. This user-friendly appliance emphasizes safety and straightforward operation, making it suitable for both residential and commercial applications. Users are strongly advised to keep the manual readily accessible for future reference, particularly for maintenance and service needs.

Integrated safety features provide peace of mind. The boiler offers Power Interruption Protection, automatically resuming operation after outages. It includes Freeze Protection, initiating a heating cycle to prevent internal damage in cold conditions. Furthermore, there's Short-Circuit Protection via internal fuses, built-in Lightning Protection through grounding, and continuous monitoring for Carbon Monoxide safety.

Operational intelligence extends to fan performance and temperature management. The boiler features Auto Fan Detection, which stops operation if fan failure occurs, and Boiling Prevention to automatically cease functioning if excessive temperatures are detected. These safeguards work in concert to ensure the boiler runs safely and efficiently.

The front panel of the NHB-110 is intuitive, featuring a digital display and various icons that convey essential information like operating status, water pressure, and error codes. Buttons allow users to easily adjust temperatures for both space heating and domestic hot water, view basic system information, and reset the unit if an error occurs. Installers have access to a dedicated diagnostics button.

Maintaining the NHB-110 is a simple process. Regular cleaning of the exterior with a damp cloth and a non-acidic cleaner is recommended. Critical tasks include draining the boiler before extended periods of disuse or maintenance, and cleaning the air intake filter every 3-4 months to prevent clogs and error code E110. Adhering to these steps ensures optimal performance.

Preventing freezing damage is crucial; users should avoid unplugging the boiler as its freeze protection requires electricity. If freezing is suspected, specific steps involving shutting off gas, opening faucets, and gently heating components are outlined. Navien also provides a limited warranty, covering defects in materials and workmanship, though improper installation or maintenance can void it, underscoring the importance of professional service and adherence to guidelines.

Frequently Asked Questions (FAQs)

Can't find the answer you need? Here are some frequently asked questions about Navien NHB-110 Boiler, and we answer them below.


What are the main models in the Navien NHB series?
The Navien NHB series includes four models: NHB-055, NHB-080, NHB-110, and NHB-150.

How do I turn the Navien NHB-110 boiler on or off?
To turn the boiler on or off, press the Power button on the front panel for 0.3 seconds.

How do I adjust the space heating temperature?
Press the Mode button once, then use the + (Up) or – (Down) buttons to set the desired temperature while the display is flashing. The default range is 104°F (40°C) to 180°F (82°C) for supply water.

What is the factory default water temperature and why should I be careful when changing it?
The factory default water temperature is 120°F (49°C). Increasing the temperature increases the risk of accidental scalding. Water at or above 125°F (52°C) can cause instant scalding, severe burns, or death, especially for children, the elderly, or disabled persons.

How do I adjust the Domestic Hot Water (DHW) indirect supply temperature?
Press the Mode button twice, then use the + (Up) or – (Down) buttons to set the desired temperature. The default DHW temperature range is 104°F (40°C) to 180°F (82°C).

What should I do if I smell gas near the boiler?
Immediately evacuate the building. Do not try to light any appliance, touch any electrical switch, or use any phone in the building. Call your gas supplier from a neighbor's phone, or if you cannot reach them, call the fire department.

What safety features does the NHB-110 boiler include?
The boiler includes Power Interruption, Freeze, Short-Circuit, Lightning, and Carbon Monoxide Protection, along with Auto Fan Detection and Boiling Prevention features.

How often should I clean the air intake filter, and what's the procedure?
The air intake filter should be cleaned every 3-4 months. Turn off the boiler and disconnect power, remove the front cover, unscrew and pull out the filter, rinse it with clean running water, allow it to dry completely, then reassemble.

What steps should I take to protect my boiler from freezing?
Do not unplug the power supply, as the freeze protection function requires electricity. Do not close the gas valve unless for maintenance. If the boiler will not be used for an extended period, drain it completely.

What should I do if an error code appears on the front panel?
First, try resetting the boiler by pressing the Reset button. If the problem persists, refer to the Troubleshooting section in the manual or contact Technical Support at 1-800-519-8794.

How often does the boiler require professional maintenance?
A qualified service technician should inspect the boiler annually, preferably at the start of the heating season, and address any reported problems.

What is the warranty coverage for the Navien NHB-110?
For residential use, it typically includes a 1-year limited labor warranty, 5-year limited parts warranty, and a 10-year limited pro-rated warranty on the heat exchanger. Commercial applications have reduced parts and heat exchanger warranty periods.

What actions can void my boiler's warranty?
The warranty can be voided by improper installation, accident, abuse, misuse, improper maintenance (e.g., scale buildup), modification, damage from local adverse conditions (e.g., water quality), damage from external events (fire, freezing), improper sizing, operating outside calibrated temperature limits, or installation outside the USA or Canada.

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