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• THE BOILER CONTAINS REFRACTORY CERAMIC FIBER, A POSSIBLE HUMAN
CARCINOGEN. USE A NIOSH APPROVED RESPIRATOR WHEN SERVICING
HIGH-TEMPERATURE INSULATION AND GASKET MATERIALS. WASH EXPOSED
SKIN GENTLY WITH SOAP AND WATER AFTER CONTACT. WASH EXPOSED
CLOTHING SEPERATE FROM NORMAL LAUNDRY.
• LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS.
WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERATION.
VERIFY PROPER OPERATION AFTER SERVICING.
• FAILURE TO MAINTAIN THE BOILER IN PROPER WORKING CONDITION MAY
LEAD TO FIRE, EXPLOSION, PERSONAL INJURY OR DEATH AND EXTENSIVE
PROPERTY DAMAGE.
• TURN OFF ALL GAS AND ELECTRIC POWER SUPPLIES TO THE BOILER BEFORE
SERVICING. CONTACT WITH OR RELEASE OF DANGEROUS FLAMMABLE
GAS, ELECTRICAL VOLTAGE, MOVING PARTS AND VERY HOT WATER UNDER
PRESSURE MAY CAUSE SERIOUS PERSONAL INJURY, PROPERTY DAMAGE OR
DEATH.
• LOCK ELECTRICAL BOXES AND GAS VALVES CLOSED TO PREVENT SOMEONE
FROM INADVERTENTLY RESTORING POWER OF GAS BEFORE THE HEATING
SYSTEM IS SAFE TO OPERATE.
• WATER LEAKS CAN CAUSE SEVERE CORROSION DAMAGE TO THE BOILER OR
OTHER SYSTEM COMPONENTS. REPAIR ANY LEAKS FOUND IMMEDIATELY.
The following routine maintenance should be performed on an annual basis:
1) Turn off electrical power and gas supply to the boiler
2) Inspect the flue passages for signs of blockage. If there is any carbon in the combustion chamber or the flue passages,
clean the heat exchanger before proceeding further. See the cleaning procedure below.
3) Remove all burners, noting the location of the pilot main burner. If burners show signs of deterioration, they should be
replaced (some discoloration around the burner ports is normal). Clean the burners by first brushing the ports with a soft
bristle brush and then vacuuming out any debris through the venturi opening.
4) Remove any debris found in the combustion chamber, being careful not to disturb combustion chamber insulation.
5) Inspect the pilot assembly. Clean any deposits found on the electrode and grounding strap. The ideal gap between the
electrode and the ground strap is 1/8". Inspect the porcelain for cracks or other deterioration. Replace pilot assembly if
deterioration is found.
6) Inspect the combustion chamber insulation for deterioration.
7) Inspect the ignition cable insulation for cracks or other deterioration. If deterioration is found, replace cable.
8) Reinstall burners, being careful to put the pilot main burner in its original location.
9) Inspect all boiler wiring for loose connections or deterioration.
10) Inspect the vent system:
•
Make sure that the vent system is free of obstructions.
•
Make sure that all vent system supports are intact.
•
Inspect joints for signs of condensate or flue gas leakage.
•
Inspect venting components for corrosion or other deterioration. Replace any defective vent components.
XII Service and Maintenance
WARNING
36
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