SSA-SVX06B-EN
11
Pre-Installation
Field Conversion to 460 Volt
•
Available power supply must agree with electrical data on component nameplate.
•
Some standard air handlers are shipped wired for 208-230 volt applications and can be
converted for 460 volt by rewiring the blower motor, see
Figure 3
. (This includes models
TWE090D3, TWE090E3, TWE120D3, TWE120E3, TWE150E3 and TWE180E3).
WARNING
Hazardous Voltage w/Capacitors!
Disconnect all electric power, including remote disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power
cannot be inadvertently energized. For variable frequency drives or other energy storing
components provided by Trane or others, refer to the appropriate manufacturer’s literature for
allowable waiting periods for discharge of capacitors. Verify with an appropriate voltmeter that
all capacitors have discharged. Failure to disconnect power and discharge capacitors before
servicing could result in death or serious injury.
For additional information regarding the safe discharge of capacitors, see PROD-SVB06A-EN
WARNING
Proper Field Wiring and Grounding Required!
All field wiring MUST be performed by qualified personnel. Improperly installed and grounded
field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST
follow requirements for field wiring installation and grounding as described in NEC and your
local/state electrical codes. Failure to follow code could result in death or serious injury.
Converting Motor to 460 Volt
1.
Ensure power is disconnected to unit by
following the warning above.
2. Remove unit access panels closest to
motor.
3. Open terminal cover on lead end of
motor.
4. Pull voltage selector plug from low
voltage selection (see
Figure 3
).
5. Shift the plug (or rotate 180°) to align
plug for high voltage selection and re-
insert plug.
Important:
When re-inserting voltage
selection plug, ensure it is
fully seated.
6. Replace terminal cover on lead end of
motor.
7.
Replace unit access panels.
Figure 3.
Voltage Change Plug