Installation and Maintenance Manual
Table Of Contents
- Warnings, Cautions and Notices
- Model Number Descriptions
- General Information
- ECM Application Notes
- Dimensions and Weights
- Receiving and Handling
- Pre-Installation
- Installation—Mechanical
- Installation—Piping
- Installation—Sensors
- Installation—Electrical
- ECM Overview and Setup
- Time Clock
- Wired Controllers—Communication Wiring
- Pre-Start
- Startup
- Tracer ZN520 Unit Startup
- Tracer UC400 Unit Startup
- General Information
- Fan Mode Switch Operation
- Tracer ZN520 Operation
- UC400 Controller Operation
- Tracer ZN520 Sequence of Operation
- UC400 Sequence of Operation
- Power-up Sequence (UC400)
- Random Start (UC400)
- Occupancy Modes (UC400)
- Timed Override Control (UC400)
- Zone Temperature Control (UC400)
- Discharge Air Tempering (UC400)
- Heating or Cooling Mode (UC400)
- Entering Water Temperature Sampling Function (UC400)
- Fan Operation (UC400)
- Exhaust Control (UC400)
- Valve Operation (UC400)
- Modulating Outdoor/Return Air Damper (UC400)
- Two-position Control Of A Modulating Outdoor Air Damper (UC400)
- Electric Heat Operation (UC400)
- Dehumidification Operation (UC400)
- Peer-to-peer Communication (UC400)
- Unit Protection Strategies (UC400)
- Maintenance
- Diagnostics
- Replacing ECM Components
Maintenance
88 UV-SVN03F-EN
Access to Fanboard & Motor. The unit ventilator fan
board can be removed for service to the blower motor and
fan wheels. The fan board must also be removed for easier
access to the unit coils for cleaning and maintenance.
Utilize the following steps for proper removal of the
fanboard.
1. Turn off power to the unit and remove the front panel.
2. Disconnect P-trap from drain pan.
3. Disconnect motor plug.
4. Slide fan board by pulling deck forward (see Figure 62).
5. When reinstalling, use the same steps in reverse order.
Motor . The fan motor is a permanent split capacitor type
motor with voltage specific power. See electrical
performance and Table 25 for motor voltage.
If a replacement motor is required, it should be ordered
from The Trane Company. To replace the fan motor,
complete the following steps:
6. Complete steps for removal of fan board (see
“Cleaning of the Drain Pan,” p. 87).
7. Disconnect the fan board ground wire.
8. Using a 7/16-in. Allen wrench, loosen the coupling on
the fan shaf
t.
9. Loosen the screw on the motor clam
p until it allow the
motor to be lifted off the base (see Figure 63).
10. Lift the motor and pull forward until fan shaf
t separates
from the motor (see Figure 64).
11. Attach new motor to fan shaft and reverse steps to
com
plete installation.
Figure 61. Removal of drain pan
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.
NOTICE:
Equipment Damage!
Support the fanboard to prevent the deck from sliding
too far forward and falling out of the unit. Failure to do
so could cause equipment damage.
2
1
3
4
Table 25. Motor voltage
Unit voltage Motor voltage
115-60-1 115-60-1
208-60-1 208/230-60-1
230-60-1 208/230-60-1
208-60-3 208/230-60-1
460-60-3 277-60-1
277-60-1 277-60-1
230-60-3 208/230-60-1
Figure 62. Fan board removal for fan / motor access
Figure 63. Loosen screws
Figure 64. Lift / pull motor forward
UV-SVN03_.book Page 88 Thursday, January 24, 2013 5:27 PM