Trane Arctic PolyTherm TM Series, Installation, Operation And Maintenance Manual

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24 ARTC-SVX005B-EN
the phase monitor indicating whether the voltage is
within acceptable values. The phase monitor design
protects against under-voltage, voltage unbalance,
phase loss, and phase reversal.
Set voltage adjustment knob at the desired operating
line voltage for the equipment. This adjustment
automatically sets the under-voltage trip point. Check
the phase monitor after initial startup. If it fails to
energize, (the LED glows or blinks red) check the wiring
of all three phases, voltage, and phase sequence. If
phase sequence is incorrect, the LED flashes green/red.
To correct this, swap any two line voltage connections
at the mounting socket. No further adjustment should
be required.
Power Interlock Switch
Some PolyTherm Chiller/Heater systems are optionally
equipped with a panel-mounted disconnect switch
installed on the outside of the power distribution panel.
The disconnect switch must be turned to the off
position before the panel can be opened for service.
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Single Point Connections
For systems with single point power connections,
detach the power cable on each module by cutting the
wire tie installed for shipping.
1. Uncoil the power cable and snake it through each
module to reach the power distribution panel.
2. Feed the taped end of the cable through the round
opening on the extreme left of the power
distribution panel.
3. Remove the tape and connect and tighten the cable
ends to the breaker corresponding to the module
number being connected. (For example, connect
the cable for module #8 to the breaker labeled #8.)
4. Connect the green ground lead to the ground lug at
the base of the enclosure.
5. Do not secure the ground wire until all of the
ground wires are connected to the ground lug and
then each can be tightened.
6. After connection, secure all power cables with
standard wire ties.
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