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Navien NHB-055 Service Manual

Navien NHB-055
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NHB Service Manual 141
Version 1.0
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 PCB and Panel
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
YES / NO
8.3 Maintenance Schedules
Owner maintenance
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 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 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 &
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
8. Inspection and Maintenance Schedule

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Navien NHB-055 Specifications

General IconGeneral
BrandNavien
ModelNHB-055
CategoryBoiler
LanguageEnglish

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