7
hoods and bathroom exhausts, so they will operate at maximum speed, do not operate a
summer exhaust fan. Close fireplace dampers.
d) Place in operation the appliance being inspected. Follow the lighting instructions. Adjust
thermostat so that appliance operates continuously.
e) Test for spillage at the draft hood relief opening after 5 minutes of main burner operation.
Use the flame of a match or candle or smoke from a cigarette.
f) After it has been determined that each appliance remaining connected to the common
venting system properly vents when tested as outlined above, return doors, windows,
exhaust fans, fireplace dampers and any other gas-burning appliance to their previous
condition of use.
g) Any improper operation of the common venting system must be corrected so that the
installation conforms to the National Fuel Gas Code, ANSI Z223.1 or CAN/CGA B149,
Installation Codes. When resizing any portion of the common venting system, the
common venting system should be resized to approach the minimum size as determined
using the appropriate tables in Part 11 of the National Fuel Gas Code, ANSI Z223, 1 or
CAN/CGA B149, Installation Codes.
Heat exchanger surfaces and vent piping should be checked every six months for deterioration
and carbon deposits. Remove all soot or other obstructions from the chimney and flue, which
might impede draft action. Replace any damaged or deteriorated parts of the venting system.
A qualified service technician should follow this procedure when inspecting and cleaning the
heat exchanger and vent pipe.
1. Turn off electrical power and close main manual gas shut-off and allow boiler to cool
down
2. Remove the vent pipe running to chimney. Remove top outer panel and flue collector
access panel. Check heat exchanger, vent and chimney for obstruction and clean as
necessary.
3. Remove burner from boiler and vacuum the burner, and the heat exchanger. If heat
exchanger is excessively dirty it may be necessary to remove it from the boiler and wash
it down with proper detergent cleaner. Be aware that the combustion chamber base is
insulated with ¼” thick ceramic paper. If this material is damaged or displaced it must be
replaced before starting up the boiler.
4. Reinstall parts removed in steps 2 and 3. Be sure that vent pipe has proper pitch and is
properly sealed. Repair or replace any gaskets, which may have been damaged in steps
2 and 3.
5.
CAUTION:
When replacing the burner be careful to fully engage the back of the burner
box into the retaining slot in the combustion chamber base. Failure to properly locate the
burner will result in erratic flame operation with the possibility of delayed ignition on light
off.
6. Restore electrical power and gas supply to boiler.
7. Place boiler in operation using lighting instructions provided.
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