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RTHA Units with Wye-Delta Starters
Additional Components
See
"Additional Components," p. 6
Information chapter for more information.
Pilot Relays
Two additional relays need to be installed for proper
operation. The relays are labeled as 2K400 and 2K300 on
the included wiring schematic. See
numbers.
Wiring
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.
NOTICE
Starter Damage!
Use of power factor correction or surge capacitors on
the load side of the starter will result in serious damage
to the starter that will NOT be covered by the starter
warranty. The capacitors MUST be connected to the
line side of the starter. The up-to-speed (UTS) contact
can be used to energize the capacitors after the motor
has reached full speed. Do NOT connect the capacitors
between the starter and motor. See RTHC-SVD02*-EN
for further details.
Low Voltage
The next step is the interconnecting wiring between the
existing controls and the new Benshaw Redistart starter.
Figure 8, p. 11
is the basic schematic showing the
necessary wiring for the MX starter.
schematic for the MX2 starter. Use the same wire size that
was used for the original wiring.
Note: 14 gauge wire is sufficient for most applications.
Adhere to all state and local electrical codes.
10
in General
Table 8, p. 47
for part
Figure 9, p. 12
is the
High Voltage
Wire the high voltage/power supply from the starter to the
compressor. Use the Starter Power Lead kits called out in
Table 7, p.
47. Follow the schematic shown in
p.
13.
Once the components are mounted and wired, skip to
"Quick Start, Initial Parameters," p. 38
controls for proper operation.
Figure 10,
to set up the
RLC-SVN005B-EN
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