Maintenance - Fall
High Limit
The high limit switch may have tripped over the summer; it should be checked and reset if necessary.
caution
Gas Line
Remove the drip leg and clean any liquid or debris that may have accumulated. Once the drip leg is cleaned, reattach it.
Gas Train
The gas connections, joints and valves should be checked annually for tightness. Apply a soap and water solution to all piping; watch for bubbling which indicates a leak. Other leak testing methods can be used.
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
•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
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 nameplate.
Evaporative Coolers
The water should be shut off and all the lines drained when the outside temperature drops below 45ºF.
Remove drain plugs for the winter.
Clean all interior parts of any mineral deposits or foreign materials that may have
Replace any worn or
Winterizing Chilled Water Coils
During the winter, chilled water coils need to be protected against freezing. Manufacturer recommends protecting the coils by either
Blowing-Out Coils
1.Close valves on the supply and return lines.
2.Open drain valves and/or drain plug. Remove vent plug to allow coil to drain faster.
3.After coil is fully drained, connect a blower to the caps. Do not connect the blower to the air vent or drain plug.
4.Close the vent plug on the header that the blower is connected to. Open the drain valve or cap on the other header.
5.Turn on blower for 30 minutes. Place mirror at discharge. If the mirror fogs up, repeat procedure until no fog appears on the mirror.
6.After drying the coil, wait a few minutes then repeat Step #5.
7.Leave drains open and do not install plugs until beginning of cooling season.
60 Model IG / IGX
®