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Operating the Boiler        11

Item

Description

25. Outdoor Reset 

Curve

Outdoor Reset Curve Load Type 

(Displayed when the outdoor reset 

option “20. Outdoor Reset”is enabled.)

1: Finned Tude Baseboard

2: FAN Coil

3: Cast Iron Baseboard

4: Low Mass Radiant

5: High Mass Radiant

6: Radiator

7: Custom (Set by installer.)

26. Boost Interval 

Time

Boost Interval Set Time (min)

27. High Altitude

Sea Level (0 - 2,000 ft)

Level 1 (2,000 - 5,400 ft)

Level 2 (5,400 - 7,700 ft)

Level 3 (7,700 - 10,100 ft)

28. Well Pump

Well Pump Status

OFF - Unused, ON - Used

29. Model

Model Type

30. Gas

Fuel Type (NG/LPG)

31. Main F/W Ver

Main Firmware Version

32. Panel F/W Ver

Controller Panel Firmware Version

3.4    Resetting the Boiler

If an error message appears during boiler operation, reset the 

boiler to resolve the problem. Press the Back button (

) on the 

front panel to reset the boiler.

If resetting the boiler does not solve the problem, refer to the 

Troubleshooting section of this manual or contact Technical 

Support at 1-800-519-8794.

Item

Description

1. Operation State

Current Operation State

2. Heat Capacity

Heat Capacity (%)

3. SH Set Temp

Space Heating Set Temperature (°F)

4. DHW Set Temp

DHW Set Temperature (°F)

5. Supply Temp

Heating Supply Temperature (°F)

6. Return Temp

Boiler Return Temperature (°F)

7. Sys Supply Temp

System Supply Temperature (°F)

8. Sys Return Temp

System Return Temperature (°F)

9. Outlet 1 Temp

Heat Exchanger Outlet Temperature (°F)

10. Outlet 2 Temp

Outlet Temperature (°F)

11. Inlet Temp

Inlet Temperature (°F)

12. Outdoor Temp

Outdoor Temperature (°F)

13. Approx. Boiler 

Flow

SH Flow Rate (GPM)

14. DHW Flow

DHW Flow Rate (GPM)

15. Water Press

Water Pressure (psi)

16. Flame Value

Flame Detector AD Value

 

Flame On: 8 bit AD Values equal to or 

lower than 70

 

Flame Off: 8 bit AD Values equal to or 

higher than 175

17. Fan Target RPM

Set Fan Speed (RPM)

18. Fan Current RPM

Fan Speed (RPM)

19. Fan Target APS

Set APS Voltage (V)

20. Fan Current APS

APS Voltage (V)

21. Flow Control 

Valve Status

100 - Close State

22. Mixing Valve 

Status

0 - Close State

23. Exhaust Temp

Exhaust Temperature (°F)

24. Outdoor Reset

Outdoor Reset Status (Enable/Disable)

Содержание NFC Series

Страница 1: ...ontact 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...

Страница 2: ...ilding Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Installation and service must be...

Страница 3: ...iler On or Off 9 3 2 Adjusting the Temperature 9 3 3 Accessing Basic Menu Items 10 3 4 Resetting the Boiler 11 4 Maintaining the Boiler 12 4 1 Cleaning the Boiler 12 4 2 Draining the Boiler 12 4 3 Cle...

Страница 4: ...pplier call the fire department Do not return to your home until authorized by your gas supplier or the fire department C Do not use this appliance if any part has been under water Immediately call a...

Страница 5: ...for use in the USA and Canada only Using the boiler in any other country will void the manufacturer s warranty Should overheating occur or the gas supply fail to shut off turn off the manual gas valve...

Страница 6: ...0 F 55 C 10 seconds 120 F 49 C 10 minutes 100 F 37 C very low scald risk DANGER HOT BURN To prevent burns Use the lowest operating temperature setting necessary to provide comfortably hot water If you...

Страница 7: ...eze Protection A sensor inside the boiler automatically detects the temperature and if necessary initiates a safety heating cycle to prevent internal equipment damage due to freezing temperatures Shor...

Страница 8: ...when the boiler is operating in anti freeze mode Auto air purge Displayed when an auto air purge is being performed e Cascade Main mode Flashes when configuring a cascade system Turns on solid if the...

Страница 9: ...for the boiler s operation such as space heating and DHW supply temperatures Refer to the following table for detailed information a Back button Return to the previous menu or screen b Mode button En...

Страница 10: ...ion the boiler will operate at this set temperature Take note of the original heating temperature in case you want to restore it to the default The default space heating supply water temperature range...

Страница 11: ...configure the space heating and DHW temperatures and review error history Press the Menu button to enter the Main Menu screen To view information about the boiler press the Menu button and then select...

Страница 12: ...or contact Technical Support at 1 800 519 8794 Item Description 1 Operation State Current Operation State 2 Heat Capacity Heat Capacity 3 SH Set Temp Space Heating Set Temperature F 4 DHW Set Temp DH...

Страница 13: ...ture resistant but it is not waterproof Keep it as dry as possible 4 2 Draining the Boiler You will need to drain the boiler before performing maintenance tasks such as to prevent the boiler from free...

Страница 14: ...e filter every 3 4 months To clean the air intake filter 1 Press the Power button on the front panel to turn off the boiler 2 Disconnect the power supply to the boiler 3 Unfasten the 4 latches 2 at th...

Страница 15: ...of the boiler 6 Remove the filter from the plastic assembly Dust and rinse it with clean running water 7 Allow the filter to dry completely 8 Place the filter assembly back into the boiler and secure...

Страница 16: ...enwillnotwarrant any damages due to freezing The installer is responsible for ensuring that there is sufficient make up air to avoid such a situation and the owner is responsible for ensuring that pro...

Страница 17: ...e service and maintenance could result in damage to the boiler or system Failure to follow the directions in this manual and component literature could result in severe personal injury death or substa...

Страница 18: ...ts over time rendering the valve inoperative Such conditions are not detectable unless the valve and its components are physically removed and inspected This inspection must only be conducted by a plu...

Страница 19: ...filter is clean Review with the Owner 1 Review the User s Information Manual with the owner 2 Emphasize the need to perform the maintenance schedule 3 Remind the owner of the need to call a licensed c...

Страница 20: ...r for 5 minutes d Close the A valve and open the C valve 11 Disconnect all tubes and valves 12 Reconnect the power supply to the boiler 13 Press the Power button on the front panel to turn on the boil...

Страница 21: ...er to 3 2 Adjusting the Temperature on page 9 Check for cross piping between the cold and hot water lines The water from the hot water faucet is too hot Is the set temperature set too high Check the b...

Страница 22: ...Manual RESET E110 Abnormal air pressure Manual RESET E205 Heating supply thermistor open or short circuit Auto RESET E218 Heating return thermistor open or short circuit Auto RESET E278 Abnormal oper...

Страница 23: ...ration outdoor temperature sensor appears only when the outdoor reset curve is enabled Alarm E761 Abnormal Operation Pre Heat Aquastat Alarm E777 LWCO service code 7700 external device Auto RESET E782...

Страница 24: ...riod replacement of the Product or components may be authorized by Navien only Navien does not authorize any person or company to assume for it any obligation or liability in connection with the repla...

Страница 25: ...tion for non recommended uses failure to follow or comply with the User s Operational Manual etc Improper maintenance including but not limited to scale buildup vent blockage failure to maintain etc M...

Страница 26: ...Memo...

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