Navien NCB-180, Service Manual

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138 NCB Service Manual Version 1.0
8. Inspection and Maintenance Schedule
8.1 Annual Servicing
In order to maintain its safe and efficient operation, it is
recommended that the boiler is serviced annually.
CAUTION
Servicing must be performed by a qualified service
agency or gas supplier
Inspection

Visual inspection for general signs of corrosion
 Checking and adjusting the gas/air ratio

Checking Flue Gas

Carrying Out a Water Leak Test in Operation

Carrying out a gas leak test in operation
 Checking Hot Water Temperature and Flow

Checking Noise

Checking venting systems
 Checking the remote controller
Maintenance

Draining the boiler and cleaning the inlet water filter
 Cleaning the Return Filter

Cleaning the intake air filter

Flushing the heat exchanger

Replacement of parts
8.2 Maintenance Report
Inspection Items References Date: Date:
Draining the Boiler and
Cleaning the Inlet Water
Filter
YES / NO
Cleaning the Return
Filter
YES / NO
Checking the Intake Air
Filter
YES / NO
Flushing the Heat
Exchanger
YES / NO
Replacement of Parts
8.3 Maintenance Schedules
Owner maintance
Daily

Check boiler area

Check pressure / temperature gauge
Monthly

Check vent piping

Check air piping (if installed)

Check air and vent termination screens

Check relief valve

Check condensate drain
 Check air vents
Periodically

Test low water cutoff (if used)

Reset button (low water cutoff)
Every 6 months

Check boiler piping (gas and water) for
leaks Operate relief valve
End of season
months

Shut boiler down (unless boiler used for
domestic hot water)
8.4 Inspection Report
Inspection Items References Date: Date:
Visual Inspection for
General Signs of
Corrosion
YES / NO
Checking and Adjusting
the Gas/Air Ratio
YES / NO
Checking Flue Gas
YES / NO
Carrying Out a Water
Leak Test in Operation
YES / NO
Carrying Out a Gas Leak
Test in Operation
YES / NO
Checking Hot Water
Temperature and Flow
YES / NO
Checking Noise
YES / NO
Checking Venting
Systems
YES / NO
Checking the front
panel.
YES / NO