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

4.7 Maintenance Schedules

Owner maintenance
Check boiler area
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Daily
Check pressure / temperature gauge
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Check vent piping
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Check air piping (if installed)
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Check air and vent termination screens
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Monthly
Check relief valve
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Check condensate drain
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Check air vents
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Test low water cutoff (if used)
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Periodically
Reset button (low water cutoff)
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Check boiler piping (gas and water) for
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leaks
Every 6 months
Operate relief valve
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End of season Shut boiler down (unless boiler used for
●
months domestic hot water)
Service technician (See the following instructions)
General:
Address reported problems
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Inspect interior; clean and vacuum if
●
necessary
Clean condensate trap and fill with
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fresh water
Check for leaks (water, gas, flue,
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condensate)
Verify flue and air lines in good
●
condition and sealed tight
Check system water pressure/system
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piping/expansion tank
Check control settings
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Annual Start-up
Check ignition and flame rod (clean and
●
reposition)
Check wiring and connections
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Flame inspection (stable, uniform)
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Flame signal
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If combustion or performance indicate
need:
Flush heat exchanger
●
Remove and clean air intake filter.
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Remove and clean space heating
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strainer.
Remove and clean inlet water filter.
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WARNING
Follow the service and maintenance procedures given
●
throughout this manual and in component literature
shipped with the boiler. Failure to perform the 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 substantial property damage.
The boiler should be inspected annually only by a qualified
●
service technician. In addition, the maintenance and care
of the boiler must be performed to assure maximum boiler
efficiency and reliability. Failure to service and maintain the
boiler and system could result in equipment failure.
Electrical shock hazard – Turn off power to the boiler
●
before any service operation on the boiler except as noted
otherwise in this instruction manual. Failure to turn off
electrical power could result in electrical shock, causing
severe personal injury or death.
Addressing the Reported Problems
Inspect any problems reported by the owner and correct before
●
proceeding.
Inspecting the Installation Area
1. Verify that boiler area is free of any combustible materials,
gasoline and other flammable vapors and liquids.
2. Verify that air intake area is free of any of the contaminants
listed in Installation & Operation Manual. If any of these are
present in the boiler intake air vicinity, they must be removed.
If they cannot be removed, reinstall the air and vent lines per
the Installation and Operation Manual.
Inspecting the Boiler Interior
1. Remove the front cover and inspect the interior of the boiler.
2. Vacuum any sediment from inside the boiler and components.
Remove any obstructions.
Maintaining the Boiler 17