Trane Climate Changer T Series Installation Operation & Maintenance page 95

Type K Coils
1. Remove all vent and drain plugs.
2. Allow the water to drain from the coil.
3. Remove the header covers.
4. If tubes are fouled, clean the tubes with a nylon or wire brush.
5. To ensure no water remains in the coil, do not replace the header covers until the coils
Note: When the coils are put back into service, use new gaskets. Trane recommends
Moisture Purge Cycle
By it's very nature, any HVAC unit with a cooling coil serves as a dehumidifier, reducing
the surrounding air's ability to hold water vapor as its temperature falls. This normally
doesn't present a problem when the unit is running. However, when the fan stops, water
vapor condenses on the cold metal surfaces inside the air handler and remains there until
the air warms sufficiently to re-evaporate it. This damp, dark environment—though
temporary—can encourage the growth of mold, mildew, and other microbial
contaminants.
Providing a moisture purge cycle 15 to 30 minutes after shutdown disperses the cold,
humid air inside the air-handling system more evenly throughout the building. This four-
step cycle:
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Air movement discourages water condensation and hastens re-evaporation of any
condensate that does happen to form. This simple preventative measure effectively
combats microbial growth and curbs moisture-related deterioration of air-handling
components.
CLCH-SVX06A-EN • T-Series Climate Changer Air Handler IOM
are put back into service.
washers be used under the bolt heads and bolts be evenly tightened to 50 ft-lbs
torque.
Closes the outdoor air dampers.
Turns off the cooling coil.
Opens any variable-air-volume terminals connected to the air handler.
Operates the supply fan for 10 to 15 minutes.
Routine Maintenance
95