Navien NCB-24LDWE, Installation & Operation Manual

Page: 53 / 72

M aintaining the Boiler 53
Addressing the Reported Problems
I nspect any proble m s reported by the owner and correct before
proceeding.
Inspecting the Installation Area
1. Verify that boiler area is free of any co m bustible m aterials,
petrol and other fla mm able vapours and li q uids.
2. Verify that air intake area is free of any of the conta m inants
listed in I nstallation & O peration M anual. I f any of these
are present in the boiler intake air vicinity, they m ust be
re m oved. I f they cannot be re m oved, reinstall the air and
flue lines per the I nstallation & O peration M anual.
Inspecting the Boiler Interior
1. Re m ove the front cover and inspect the interior of the boiler.
2. Vacuu m any sedi m ent fro m inside the boiler and
co m ponents. Re m ove any obstructions.
Cleaning the Condensate Trap
1. I nspect the condensate drain line, condensate fittings, and
condensate trap.
2. Re m ove any sedi m ent fro m the trap.
3. Fill with fresh water until the water begins to pour out of the
drain.
Checking all Piping for Leaks
Eli m inate all syste m or boiler leaks. Continual fresh m akeup
water will reduce boiler life. M inerals can build up in sections,
reducing heat transfer, overheating heat exchanger, and causing
heat exchanger failure. Leaking water
m ay also cause severe
property da m age.
1. I nspect all water and gas piping and verify to be leak free.
2. Look for signs of leaking lines and correct any proble m s
found.
Checking the Flue System and Air Piping
1. Visually inspect the entire gas flue syste m for blockage,
deterioration or leakage. Repair any joints that show signs of
leakage. Verify that air inlet pipe is connected and properly
sealed (if installed).
2. Verify that boiler flue discharge and air intake are clean and
free of obstructions.
WARNING
Ɣ
Follow the service and m aintenance procedures given
throughout this m anual and in co m ponent literature
shipped with the boiler. Failure to perfor m the service
and m aintenance could result in da m age to the boiler or
syste m .
Ɣ
Failure to follow the directions in this m anual and
co m ponent literature could result in severe personal
injury or substantial property da m age.
Ɣ
The boiler should be inspected annually only by a
q ualified service technician. I n addition, the m aintenance
and care of the boiler m ust be perfor m ed to assure
m axi m u m boiler efficiency and reliability. Failure to
service and m aintain the boiler and syste m could result
in e q uip m ent failure.
Ɣ
Electrical shock hazard – Turn off power to the boiler
before any service operation on the boiler except as
noted otherwise in this instruction
m anual. Failure to
turn off electrical power could result in electrical shock,
causing severe personal injury.