Grounding Afdh Cabinet; Output Wiring From The Afdh To The Ctv Motor - Trane CVHE Installation Instructions Manual

Installation

Grounding AFDH Cabinet

WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury. 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.
NOTICE:
Use Copper Conductors Only!
Failure to use copper conductors could result in
equipment damage as unit terminals are not designed
to accept other types of conductors.
1. Run a suitable, unbroken, grounding conductor from
the drive cabinet's ground connection terminal to the
motor's ground terminal, and then on to earth ground.
Figure 30. Location of AFDH cabinet ground terminal
1. Cabinet ground connection terminal
34
1
Output Wiring from the AFDH to the CTV
Motor
1. Remove the cover plate from the motor terminal
access cutout on the back of the drive cabinet.
2. Feed the six motor leads through the back of the drive
cabinet to the compressor motor terminal board.
3. Attach the leads in pairs to the correct motor terminals
(both T1 leads to the T1 terminal, both T2 leads to the
T2 terminal, and both T3 leads to the T3 terminal).
a. Torque the 3/8-in. bolts at each terminal connection
to 44 ft·lb.
Note: These power connections should be re-torqued to
44 ft·lb after the first three to six months of
operation and then on an annual basis thereafter.
4. Put the transition cover back in place and reseal it when
finished.
Figure 31. Output wiring from AFDH to CTV motor
1
1. Output motor leads coming in from the right hand cabinet
compartment (drive module) and routed up through the CTs to the
motor terminal access cutout
2. Motor leads routed through cabinet motor terminal access cutout
3. Transition cover removed and Z-bracket blanked out of photo for
clarity
4. Factory installed motor leads are long enough to extend
approximately 18 in. out from the access cutout
5. Attach both T1 motor leads to compressor motor terminal T1
6. Attach both T2 motor leads to compressor motor terminal T2
7. Attach both T3 motor leads to compressor motor terminal T3
8. Compressor motor terminal board
AFDH-SVN03H-EN