Control Device Replacement; Drain Pans - Trane UniTrane Installation, Operation And Maintenance Manual

Cleaning Porous Surfaces
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury.
To clean a porous insulating surface (fiberglass
insulation):
1. Disconnect all electrical power to the unit.
2. Wearing the appropriate personal protective
equipment, use a vacuum device with a HEPA filter
(99.97 percent efficient at 0.3 micron particles) to
remove the accumulated dirt and organic matter.
Note: Be careful not to tear the insulation surface or
edges.
3. Confirm the drain line is open following the cleaning
process.
4. Allow the unit to dry thoroughly before putting it back
into service.
5. Replace all panels and parts and restore electrical
power to the unit.
6. Be careful any contaminated material does not contact
other areas of the unit or building. Properly dispose of
all contaminated materials and cleaning solution.

Control Device Replacement

To order control components such as relays, contactors,
transformers, low temperature detection devices,
condensate overflow detection devices, differential
pressure switches, sensors, control valves and actuators,
contact the local Trane Service Parts Center. To order, the
Trane parts center will need the unit model number (which
can be found on the unit nameplate), the serial number,
and the part name or ID.

Drain Pans

Removing Main Drain Pan
Horizontal Unit
To remove the main drain pan on a horizontal unit:
1. Peel the insulation from the edges of the pan's
underside to access the mounting screws (see the
figure below).
2. Remove the screws and lower the end of the drain pan
closest to the control box
3. Remove the drain spout by pulling it from the hole in
the chassis end panel.
UNT-SVX07J-EN
Figure 100. Peel insulation back to see mounting screw
Mounting screw
Vertical Unit
To remove the main drain pan on vertical units:
1. Disconnect the clips holding the pan to the fan board
2. Disconnect the main and overflow drain hoses
3. Slide pan forward to remove (see the figure below).
Figure 101. Clips hold drain pan to the fan board
Clips hold drain pan in place
Note: Do not operate the fan-coil unit without the main
and auxiliary drain pans in place to prevent
condensate leakage.
Removing Auxiliary Drain Pan
To remove the auxiliary drain pan:
1. Loosen the hose clamp (installer supplied) around the
drain connection collar and disconnect the drain line.
2. Remove the overflow drain line to the auxiliary drain
pan if it was installed.
3. Remove the condensate overflow switch option from
the auxiliary drain pan.
Routine Maintenance
125