4-1
MAINTENANCE
SFC BOILER / WATER HEATERS - SFC 199
4.0 MAINTENANCE
4.1 UNIT MAINTENANCE
4.1.1 General Care
•
Keep combustible materials and ammable liquids and vapors away from the unit.
• Keep vent terminals clear of obstructions (snow, dirt, etc.).
4.1.2 Inspection
Inspection of the unit is to be performed annually by a qualied service
technician.
4.1.3 Venting
• Check vent terminals for any obstructions (e.g. leaves, dust, other debris).
• Check and clean or replace intake 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 1.5.3 of this manual).
Ensure that the trap has been re-lled completely before ring the unit.
• Check the pH level of the condensate discharge if using condensate
neutralization.
4.1.5 Burner
• At the rst 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 clearing
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. In alternate years, visually inspect burner
through the sight glass. Ensure the ame is stable and without excessive
uttering. Normal ame pattern is evenly distributed over the burner surface.
• If the burner is operating improperly, remove and clean or replace. Use a CO
2
analyzer to determine proper combustion. See Table 12 for correct values.
Figure 46: Ignitor Gap - 3/16” / 4.5mm
CAUTION
- The owner is responsible
for general care of the unit.
Improper maintenance of the
unit may result in a hazardous
condition.
- Periodic inspection of the
low water cut-off device,
including ushing of oat
types, is required, if installed
as an accessory to the unit.
- When servicing controls,
label all wires prior to
disconnection. Wiring errors
can cause improper and
dangerous operation.
WARNINGS
- Fill the trap with water
before the unit is rst red to
prevent exhaust fumes from
entering the room. Never
operate the unit unless the
trap is lled with water.
Failure to comply will result in
severe personal injury or death.
-
Whenever the burner is
removed for inspection or
unit servicing, examine the
sealing gaskets and replace if
damaged.
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