Electrical Installation (All Afdh Models); Install Shorting Buss Bars - Trane CVHE Installation Instructions Manual

Installation
Figure 36. Evaporator mounting bracket
1
2
1. Bracket
2. Support
3. Strip
Electrical Installation (All AFDH
Models)
WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
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 a CAT III or IV voltmeter rated per
NFPA 70E that all capacitors have discharged.
For additional information regarding the safe discharge of
capacitors, see PROD-SVB06*-EN.
WARNING
Conform to All Applicable National, State,
and Local Electrical Codes!
Failure to follow all applicable codes could result in an
arc flash event, electrocution, explosion, or fire, which
could result in death or serious injury. Users MUST
conform to all applicable national, state, and local
electrical codes during the electrical installation and
servicing of this product.
NOTICE
Use Copper Conductors Only!
Failure to use copper conductors could result in
equipment damage as the equipment was not designed
or qualified to accept other types of conductors.
46
3

Install Shorting Buss Bars

Note: Shorting buss bars must be installed since the
AFDH is a three-lead device while the starter was a
six-lead device. The wires must be connected
(shorted) at both ends (at the AFDH and at the
motor terminals) to ensure that there is no
difference in potential between the two paired
leads caused by different wire lengths. Some
existing starters may have this done already.
1. Remove the motor terminal lug from all six terminals
on the compressor motor terminal board.
2. Install the three buss bars provided, one each between
the following motor terminal pairs
a. T1 - T6
b. T2 - T4
c. T3 - T5
3. Reinstall all of the motor terminal lugs.
Figure 37. Buss bar installation on compressor motor
terminal board
1. Compressor motor terminal board
2. Remove motor terminal lugs (from all 6 terminals).
3. Install shorting buss bars across the motor terminal pairs as
shown.
Motor terminal lugs reinstalled
AFDH-SVN004C-EN