Coil Winterization - Trane Performance Climate Changer Installation, Operation And Maintenance Manual

Routine Maintenance
Hazardous Voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow proper
lockout/tagout procedure to ensure the power cannot be inadvertently energized. Failure to
disconnect power before servicing could result in death or serious injury.
To clean refrigerant coils:
1. Disconnect all electrical power to the unit.
2. Wearing the appropriate personal protective equipment, use a soft brush to remove loose
3. Install a block-off to prevent spray from going through the coil and into a dry section of the unit
4. Mix a high-quality coil cleaning detergent with water according to the manufacturer's
Note: If the detergent is strongly alkaline after mixing (PH 8.5 or higher), it must contain an
5. Place the mixed solution in a garden pump-up sprayer or high-pressure sprayer. If a high
6. Spray the leaving air side of the coil first, then the entering air side.
7. Thoroughly rinse both sides of the coil and the drain pan with cool, clean water.
8. Repeat steps 6 and 7 as necessary.
9. Straighten any coil fins damaged during the cleaning process.
10. Confirm the drain line is open following the cleaning process.
11. Allow the unit to dry thoroughly before putting it back into service.
12. Replace all panels and parts and restore electrical power to the unit.
13. Be careful any contaminated material does not contact other areas of the unit or building.

Coil Winterization

Water coil winterization procedures consist primarily of draining water from the coil before the
heating season. Trane recommends flushing the coil with glycol if coils will be exposed to
temperatures below 35 degrees.
NOTICE:
Coil Freeze-up!
Properly drain and vent coils when not in use. Trane recommends glycol protection in all
possible freezing applications. Use a glycol approved for use with commercial cooling and
heating systems and copper tube coils. Failure to do so could result in equipment damage.
Install field-fitted drains and vents to permit winterization of coils not in use and to assist in
evacuating air from the water system during startup. If draining is questionable because of dirt or
scale deposits inside the coil, fill the coil with glycol before the heating season begins.
126
WARNING
debris from both sides of the coil.
and/or system ductwork.
instructions.
inhibitor. Follow the cleaning solution manufacturer's instructions regarding the use of the
product.
pressure sprayer is to be used:
a. Maintain minimum nozzle spray angle of 15 degrees.
b. Spray perpendicular to the coil face.
c. Keep the nozzle at least 6 inches from the coil.
d. Do not exceed 600 psi.
Properly dispose of all contaminated materials and cleaning solution.
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