Eco-King HWB-299, Installation And Service Manual

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E93.1801EN171 HWB installation manual 117
Maintenance Checklist
Allowing the water heater to operate with a dirty combustion chamber will hurt operation.
Failure to clean the heat exchanger as required by the manual and dictated by the operating
location
could result in water heater failure, property damage, personal injury, or death.
Such product failures ARE NOT covered under warranty
Periodic maintenance should be performed once a year by a qualified service technician to assure that all the
equipment is operating safely and efficiently. The owner should make necessary arrangements with a qualified
heating contractor for periodic maintenance of the heater. The technician must also inform the owner that the lack
of proper care and maintenance of the water heater may result in a hazardous condition.
Maintenance Table
Inspection Activities Date Last Completed
1
st
Year 2
nd
Year 3
rd
Year 4
th
Year
Near water
heater pip-
ing
Check system and water heater piping for any sign of
leakage. Take off water heater cover and inspect con-
nections in water heater for any leaks or corrosion
Vent
Check condition of all vent pipe and joints
Check to ensure vent termination not blocked or ob-
structed
Gas
Check gas piping, test for leaks and signs of aging.
Record gas pressure and note pressure drop upon
start-up. Record CO2 at high and low fire
Visual and
Temperature Do visual inspection of all system components and
verify programmed temperature settings
Connections Check wire connections and make sure they are tight
Combustion
chamber
Check burner tube and combustion chamber coils.
Clean with nylon brush and vacuum. Avoid touching
white ceramic fiber. Also see maintenance section of
manual
Spark igniter
Ensure spacing of igniter prongs are aligned properly.
Replace NRV
Replace non-return valve every year. And be sure it
is not leaking gas after reassembling.
Condensate
trap
Disconnect condensate hose and trap. Ensure no
blockage, rinse and clean out. Fill completely again
with fresh water and re-install
Relief Valve
Check to make sure it is not weeping
Pump and
Fan
Listen to sound of the pump and fan. If either makes
noise during operation, it is recommended to replace
the part.
Low water cut-
off
Check the LWCO is not leaking and check for right
pressure value by draining the water from the water
heater and comparing the value with a calibrated me-
ter equipment
Homeowner
Question homeowner before maintenance if they have
any issues and after done, confirm activities
you performed during maintenance visit
Used descal-
ing products
Check the descaling products
Water hard-
ness
WARNING