Navien NCB-180 User's Information Manual
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Navien NCB-180 User's Information Manual

Combination boiler
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See also: Service Manual , Operation & Installation Manual
User's Information
Manual
Getting Service
If your boiler requires service, you have several options for getting service:
Contact Technical Support at 1-800-519-8794 or on the website: www.navienamerica.com.
●
For warranty service, always contact Technical Support first.
Contact the technician or professional who installed your boiler.
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Contact a licensed professional for the affected system (for example, a plumber or electrician).
●
When you contact Technical Support, please have the following information at hand:
Model number
●
Serial number
●
Date purchased
●
Installation location and type
●
Error code, if any appears on the front panel display.
●

Combination Boiler

Navien America, Inc.
20 Goodyear lrvine, CA 92618 TEL +949-420-0420 FAX +949-420-0430 www.navienamerica.com
Version: 1.00(Oct. 02. 2013)

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Summary of Contents for Navien NCB-180

  • Page 1: Combination Boiler

    ● Serial number ● Date purchased ● Installation location and type ● Error code, if any appears on the front panel display. ● Version: 1.00(Oct. 02. 2013) Navien America, Inc. 20 Goodyear lrvine, CA 92618 TEL +949-420-0420 FAX +949-420-0430 www.navienamerica.com...
  • Page 2 Combination Boiler User’s Information Manual Model NCB-180 / 210 / 240 * Lead Free Keep this manual near this boiler for future reference whenever maintenance or service is required. * The wetted surface of this product contacted by consumable water contains less than one quarter of one percent(0.25%) of lead by weight.

  • Page 3: Table Of Contents

    Contents 1. Safety Information 2. About the Boiler 2.1 Description of the Boiler 2.2 Parts of the Boiler 2.3 The Front Panel 3. Operating the Boiler 3.1 Turning the Boiler On or Off 3.2 Adjusting the Temperature 3.3 Viewing Basic Information 3.4 Resetting the Boiler 4.

  • Page 4: Safety Information

    1. Safety Information The following safety symbols are used in this manual. Read and follow all safety instructions in this manual precisely to avoid WARNING unsafe operating conditions, fire, explosion, property damage, personal injury, or death. Keep this manual for future reference. If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
  • Page 5 DANGER DANGER This boiler’s water temperature is set to 120°F (49°C) at the factory for your safety and comfort. Increasing the temperature increases the risk of accidental scalding. Water temperatures at or above 125°F (52°C) can cause instant scalding, severe burns, or death.
  • Page 6 CAUTION WARNING Do not attempt to repair or replace any part of the boiler, ● unless it is specifically recommended in this manual. For all other service, contact an authorized technician or licensed professional. Improper adjustments, alterations, service, or maintenance may lead to property damage, personal injury, or death and will void your warranty.

  • Page 7: About The Boiler

    2. About the Boiler 2.1 Description of the Boiler 2.2 Parts of the Boiler The Navien NCB boiler is available in 3 models: NCB-180, NCB-210, and NCB-240. Front View The main features are as follows: Exhaust Combustion Power Interruption: When the power is restored after a power ●...

  • Page 8: The Front Panel

    2.3 The Front Panel The front panel allows you to adjust the temperature and view the operating status or error codes. Remove the protective sheet from the front panel before using it. 2.3.1 Icons and Digital Display The icons and digital display on the front panel provide important information required for the boiler’s operation.
  • Page 9 2.3.2 Buttons Using the buttons on the front panel, you can turn on or off the boiler, monitor the current operation status, and set the values required for the boiler’s operation, such as space heating and DHW supply temperatures. Refer to the following table for detailed information.

  • Page 10: Operating The Boiler

    3. Operating the Boiler 3.1 Turning the Boiler On or Off 2. Press the + (Up) or – (Down) buttons until the desired temperature appears on the display. To turn the boiler on or off, press the Power button for 0.3 seconds. MODE MODE You can adjust the temperature while the display is flashing.

  • Page 11: Viewing Basic Information

    3.2.2 Adjusting the DHW Water Temperature 3.3 Viewing Basic Information To view information about the boiler, press the Mode button three times. “INFO” will appear on the display. WARNING Before adjusting the water temperature, read “To prevent burns:” on page 4 carefully. Water above 120°F can cause instant scalding, severe burns, or death.

  • Page 12: Resetting The Boiler

    3.4 Resetting the Boiler Display Description Outdoor reset curve If an error message appears, you can try resetting the boiler to -: Not in use. resolve the problem. To reset the boiler, press the Reset button. 1: Finned tube baseboard 2: FAN coil 3: Cast iron baseboard 4: Low mass radiant...

  • Page 13: Maintaining The Boiler

    4. Maintaining the Boiler 4.1 Cleaning the Boiler 3. Close the gas valve. CAUTION Make sure the boiler is turned off and the power supply is disconnected before cleaning the boiler. The boiler may remain hot for several minutes after it is turned off. To prevent burns, wait until the boiler has cooled down before cleaning.

  • Page 14: Cleaning The Inlet Water Filter (Dhw Side)

    4.3 Cleaning the Inlet Water Filter (DHW 5. Close off any heating zones that do not require draining and open a purge valve to drain the space heating side. Open all side) domestic hot water faucets completely to drain the water heating side.

  • Page 15: Cleaning The Strainer (Space Heating Side)

    4.4 Cleaning the Strainer (Space Heating 4.5 Cleaning the Air Intake Filter side) If the air intake filter becomes clogged by dust or lint, the boiler will cease to operate and “Error Code 110” will appear on the front If the heating performance is decreased, you can increase the panel display.
  • Page 16 4. Remove the screw that secures the air intake filter (the filter is 7. Allow the filter to dry completely. located at the top left of the boiler). 8. Reinsert the filter into the plastic assembly. 9. Place the filter assembly back into the boiler and secure it with the screw.

  • Page 17: Protecting The Boiler From Freezing

    1. Press the Power button on the front panel to turn off the boiler. CAUTION 2. Close the gas valve. Damage due to freezing is not covered by the Navien limited warranty. Freezing damage is most likely to occur due to back drafting ●...

  • Page 18: Maintenance Schedules

    4.7 Maintenance Schedules WARNING Owner maintenance Follow the service and maintenance procedures given ● throughout this manual and in component literature Check boiler area ● Daily shipped with the boiler. Failure to perform the service and Check pressure / temperature gauge ●...
  • Page 19 Cleaning the Condensate Trap 4. Inspect automatic air vents and air separators. Remove air vent caps and briefly press push valve to flush vent. 1. Inspect the condensate drain line, condensate fittings, and 5. Replace caps. Make sure vents do not leak. Replace any leaking condensate trap.
  • Page 20 Checking the Control Settings WARNING 1. From the front panel, enter the Diagnostics Mode and check all settings. Adjust settings if necessary. Following installation, the valve lever must be operated at least once a year to ensure that waterways are clear. Certain 2.
  • Page 21 13. Reinsert the filter and ensure the filter cap is securely tightened. 14. Reconnect the power supply to the boiler. Navien Easy valve Kit 15. Press the Power button on the front panel to turn on the boiler. Cold Water...

  • Page 22: Troubleshooting

    5. Troubleshooting 5.1 Solving Basic Problems If you experience a problem with the boiler, refer to the following chart for possible remedies. Error codes that appear on the front panel display are explained in the following section. MODE For minor problems, resetting the boiler may resolve the issue. To reset the boiler, press the Reset button on the front panel.

  • Page 23: Understanding Error Codes

    5.2 Understanding Error Codes When an error code appears on the front panel, refer to the following chart for a definition and possible remedy for the situation. Error Code Reason Self-diagnostic / Action E003 Ignition failure Ensure that the main gas supply valve is open. E004 False flame detection Ensure that the electrical cord is properly grounded.

  • Page 24: Warranty Period

    Navien original factory component. Navien, at its sole Navien. When the product is installed in a new construction, the discretion, may replace the product with a new or refurbished commencement date shall be dated upon which the end-user product of comparable quality and design.
  • Page 25 OR FITNESS FOR A PARTICULAR PURPOSE. Navien’s total liability for any claim arising hereunder shall not exceed the purchase price which you paid for the product. NAVIEN SHALL NOT IN ANY EVENT BE LIABLE FOR INDIRECT, SPECIAL, CONSEQUENTIAL OR LIQUIDATED DAMAGES OR PENALTIES, INCLUDING CLAIMS FOR...
  • Page 26 Memo...

This manual is also suitable for:

Ncb-240Ncb-210

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