Navien NCB-24LSWE, Service Manual

Page: 139 / 144

NCB Service Manual 137 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 flue 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 Record 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 maintenance
Daily

Check boiler area

Check pressure / temperature
gauge
Monthly

Check flue piping

Check air piping (if installed)

Check air and flue termination
screens

Check relief valve

Check condensate drain

Check air ducts
Periodically

Test low water cut-off (if used)

Reset button (low water cut-off)
Every 6
months

Check boiler piping (gas and water)
for leaks Operate relief valve
End of heating
season

Shut boiler down (unless boiler
used for domestic hot water)
8.4 Inspection Report
Inspection Items Record 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 Flue Systems
YES / NO
Checking the front
panel.
YES / NO