Service manual
SC Series Boilers – Installation and Service Manual
25
4.3 SERVICE CHECKLIST
Reference
Section
Do not store anything against the boiler or allow dirt or debris to accumulate in the
area immediately surrounding the boiler. The flow of supply and exhaust air must
not be obstructed.
2.5
Check air openings are not restricted and complies with applicable code(s).
Adequate supply air is necessary for combustion, flue gas dilution and ventilation.
2.2, 2.5,
2.6, 2.7
Check all gasketed joints for leakage, and tighten bolts or replace gaskets if
necessary.
When the boiler has operated for several minutes, check for leakage around boiler
and along vent, and other areas susceptible to leakage.
Check externally the vent system for soot, rust scale or corrosion. Check for
dislodged venting or possible leaks in venting ducts.
Inspect the flueways and terminal cap for the presence of soot, rust scale or blockage.
The presence of soot, rust scale or corrosion indicates misadjustment. Clean the
Terminal Cap Screen.
Inspect and, if necessary, clean the main burner. Check burners to see that they are
not cracked or dislodged.
3.3, 4.2
Visually check the main burner flames. A yellow flame caused by improper
adjustment is always accompanied by formation of soot which, if allowed to continue,
will partially restrict free passage of products of combustion to the flue.
3.3
Check that gas piping is secured. Smell for gas leaks around boiler and gas piping
connections. Gas leaks can also be checked for using a soap solution; do not use
an open flame to check for leaks. Note: Propane is heavier than air and pools in a
low area in the event of a leak.
3.9
Inspect for leaks in the water piping and at water piping connections.
Circulating pumps used with hot water heating systems should be inspected for
water leaks.
Check for weeping at pressure relief valve outlet during normal operation.
2.11
Listen for unusual audible sounds in the boiler. Any audible sounds in the boiler
system may be indications of scaling or lack of sufficient water flow and the system
should be checked without delay. Scaling is due to improper maintenance. It is not
the fault of the boiler. Scale damage is not covered by warranty.
2.10
Check the temperature and pressure gauge and expansion tank pressure is within
an acceptable range for the heating system.
Keep boiler area clear and free from combustible materials, gasoline and other
flammable vapors and liquids. Combustible materials, gasoline and other flammable
vapors and liquids should not be stored in the area of the boiler.
Check should be made on ignition system, operation controls and safety shut-off
valves for gas tightness.
Check the tubes connecting the air differential pressure switches with air chamber
are correct, secured, and good condition.
3.5
Check that the condensate drain tube is filled with water and not clogged.
2.7
If applicable, inspect low water cutoff for proper operation.
2.3
The emergency shut-off devices are identified and the owner is aware of their
location and method of operation.
If applicable, periodically inspect the low water cutoff including flushing of float
types.