Installation: Electrical
CAUTION
Damage to Starter components!
To avoid damage remove debris inside the starter panel. Failure to do so may cause
an electrical short that seriously damages the starter components.
1. If the starter enclosure must be cut to provide electrical access, exercise care to pre-
vent debris from falling inside the enclosure.
2. Use only shielded twisted pair for the interprocessor communication (IPC) circuit
between the starter and the UCP on remote mounted starters. Recommended wire is
Beldon Type 8760, 18 AWG for runs up to 1000 feet.
Note: The polarity of the IPC wire pair is critical for proper operation.
3. Separate low-voltage (less than 30V) wiring from the 115V wiring by running each in
its own conduit.
4. As you route the IPC circuit out of the starter enclosure, make sure that it is at least
6" from all wires carrying a higher voltage.
5. For UCP IPC shielded twisted pair wiring, the shield should be grounded on one end
only at UCP at 1X1-G. The other end should be unterminated and taped back on the
cable sheath to prevent any contact between shield and ground.
6. Oil Pump Interlock - All starters must provide an interlock (N.O.) contact with the
chiller oil pump connected to the UCP at Terminals 1A-J2-7 and 1A9-J2-9.
The purpose of this interlock is to power the oil pump on the chiller in the event that a
starter failure, such as welded contacts, keeps the chiller motor running after the con-
troller interrupts the run signal.
CAUTION
Electrical Noise!
Maintain at least 6 inches between low-voltage (<30V) and high voltage circuits. Fail-
ure to do so could result in electrical noise that may distort the signals carried by the
lowvoltage wiring, including the IPC.
CVGF-SVX03B-EN
83
Summary of Contents for CVGF1000
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