Greenheck IG / IGX (464104 IOM) (Pre-2009) - Manual (Page 76)

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Maintenance - Fall
Evaporative Coolers
The water should be shut off and all the lines drained when the outside temperature drops below 45°F.
Remove drain plugs for the winter.
Clean all interior parts of any mineral deposits or foreign materials that may have built-up during the cooling
season.
Replace any worn or non-functioning parts.
Gas Line
Remove the drip leg and clean any liquid or debris that may have accumulated. Once the drip leg is cleaned,
reattach it.
Vent Piping
Remove any debris from the drip legs on the combustion air and exhaust pipes.
Burners and Orifices
Before each heating season, examine the burners and gas orifices to make sure they are clear of any debris such
as spider webs, etc. Clean burner as follows:
• Turn off both electrical and gas supplies to the unit.
• Disconnect union between manifold and gas valve.
• Remove manifold and burner assembly.
• Inspect and clean orifices and burners as necessary. Avoid using any hard or sharp instruments which
could cause damage to the orifices or burners.
- Remove any soot deposits from the burner with a wire brush.
- Clean the ports with an aerosol degreaser or compressed air.
- Wipe the inside of the burner clean. Cleaning the burner with a degreaser will slow the future build-up
of dirt.
• Before reinstalling the burner assembly, look down the heat exchanger tubes to make sure they are
clear of any debris.
• Reinstall manifold and burner assembly, reconnect wire leads and gas supply piping.
• Turn on the electrical power and gas supply.
• Follow the start-up procedure to light the burners and verify proper operation.
Heat Exchanger
The heat exchanger should be checked annually for cracks. If a crack is detected, the heat exchanger should be
replaced before the unit is put back into operation. Also, airflow across the heat exchanger should be checked to
make sure the blower is operating properly.
Flue Collector Box
The flue passageway and flue collector box should be inspected prior to each heating season and cleared of any
debris.
Electrical Wiring
The electrical wiring should be checked annually for loose connections or deterioration.
Replacement Parts
When ordering replacement parts, include the complete unit model number and serial number listed on the unit
rating plate.
CAUTION!
Lock-out the gas and the electrical power to the unit before performing any maintenance or service
operations to this unit.
Maintenance