Inspection And Maintenance Schedule; Annual Servicing; Maintenance Report; Maintenance Schedules - Navien NCB-700-2S+/42K Service Manual

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
Draining the Boiler and
Cleaning the Inlet Water Filter
Cleaning the Return Filter
Checking the Intake Air Filter
Flushing the Heat Exchanger
Replacement of Parts
Record Date: Date:
YES / NO
YES / NO
YES / NO
YES / NO

8.3 Maintenance Schedules

Owner maintenance
Check boiler area
●
Daily
Check pressure / temperature gauge
●
Check flue piping
●
Check air piping (if installed)
●
Check air and flue termination screens
●
Monthly
Check relief valve
●
Check condensate drain
●
Check air ducts
●
Test low water cut-off (if used)
●
Periodically
Reset button (low water cut-off)
●
Check boiler piping (gas and water) for
●
Every 6 months
leaks Operate relief valve
End of heating Shut boiler down (unless boiler used for
●
season domestic hot water)

8.4 Inspection Report

Inspection Items
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 front panel.
Record Date: Date:
YES / NO
YES / NO
YES / NO
YES / NO
YES / NO
YES / NO
YES / NO
YES / NO
YES / NO
Inspection and Maintenance Schedule 117