Maintenance Schedules - Navien NFC-250/200H User's Information Manual

4.5 Maintenance Schedules

Owner maintenance
Check the boiler area is free
of combustible/flammable
materials and air contaminants.
Daily
Check the pressure/
temperature gauge for signs of
higher than normal pressure.
Visually inspect the vent
piping for signs of leakage and
blockage.
Visually inspect the burner
Monthly
flames.
Inspect the condensate trap
and the PVC fittings.
Test the LWCO for proper
Periodically
operation.
Inspect boiler piping (gas and
water) for leaks.
Every 6
months
Test to make sure the relief
valve is operating normally.
Non-heating Shut boiler down (unless boiler
season is used for domestic hot water).
18 Maintaining the Boiler
Service technician (See the following instructions)
General:
Address reported problems.
Inspect interior; clean and vacuum
if necessary.
Clean condensate trap and fill with
fresh water.
Check for leaks (water, gas, flue,
condensate).
Verify flue and air lines in good
condition and sealed tight.
Check system water pressure/
system piping/expansion tank.
Annual
Check control settings.
Start-up
Check ignition and flame rod (clean
and reposition).
Check wiring and connections.
Inspect flame (stable, uniform).
Inspect flame signal.
If combustion or performance indicate
need:
Flush heat exchanger.
Remove and clean air intake filter.
Remove and clean space heating
strainer.
Remove and clean inlet water filter.
WARNING
Follow the service
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.
and maintenance