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4-1
MAINTENANCE
TANKLESS WATER HEATER 199
4.0 MAINTENANCE
4.1 WATER HEATER MAINTENANCE
4.1.1 General Care
•
Keep combustible materials and flammable liquids and vapors away from the unit.
•
Keep vent terminals clear of obstructions (snow, dirt, etc.).
4.1.2 Inspection
•
I
nspection of the unit must be performed annually by a qualified service
technician.
4.1.3 Venting
•
Check vent terminals for any obstructions (e.g. leaves, dust, other debris).
•
Check and clean or replace intake air filters or screens as required.
•
Check for holes or leaks in venting. Replace venting as needed.
•
Examine for any signs of moisture caused by sweating intake air pipes.
Insulate as required.
•
Ensure proper resealing or reinstallation of venting at each servicing.
4.1.4 Condensate Trap
•
Examine the condensate trap every two months to see if cleaning is
necessary
(refer to trap cleaning instructions, section 4.1.15 of this manual).
Ensure that the trap has been re-filled completely before firing the unit.
•
Check the pH level of the condensate discharge if using condensate
neutralization.
4.1.5 Burner
•
At the first annual service, remove the burner to inspect the extent of fouling
(refer to burner removal and reassembly instructions, section 3.4.1 of this
manual). Blow clear using compressed air. Evaluate the magnitude of
cleaning required, and establish a reasonable burner inspection schedule.
Some installations may call for annual service, others showing clean burners
will only need attention every 2 years. Consider adding air filtration if the
burner requires cleaning every year. In alternate years, visually inspect burner
through the sight glass. Ensure the flame is stable and without excessive
fluttering. Normal flame pattern is evenly distributed over the burner surface.
•
If the burner is operating improperly, remove and clean or replace. Use a
combustion analyzer to determine proper combustion. See Table 11 for
correct values.
3/16" / 4.5MM
Figure 37: Checking igniter gap using 251-001 Ignitor Gapping Tool
CAUTION
- The owner is responsible
for general care of the unit.
Improper maintenance of the
unit may result in a hazardous
condition.
- When servicing controls,
label all wires prior to
disconnection. Wiring errors
can cause improper and
dangerous operation.
- When removing a burner,
a new burner gasket is
required.
WARNING
- Fill the trap with water
before the unit is first fired to
prevent exhaust fumes from
entering the room. Never
operate the unit unless the
trap is filled with water.
Failure to comply will result in
severe personal injury or death.
-
Whenever the burner is
removed for inspection
or servicing, examine the
sealing gaskets and replace if
damaged.