FIELD WIRING
Wiring must comply with all applicable codes and ordinances.
Warranty is voided if wiring is not in accordance with specifi-
cations. An open fuse indicates a short, ground or overload.
Before replacing a fuse or restarting a compressor or fan
motor, the trouble must be found and corrected.
Copper wire is required for all power lead terminations at
the unit while either aluminum or copper can be used for all
other wiring.
ALP units may be ordered with internal power wiring for
either single or multiple point power connection. If single point
power connection is ordered, a single large power terminal
block or non-fused disconnect switch is provided and wiring
within the unit is sized in accordance with the National Elec-
trical Code. A single field supplied disconnect is required.
An optional factory mounted transformer may be provided.
If multiple point wiring is ordered, three power connections,
one per compressor circuit plus one for condenser fans, are
required and wiring with the unit is sized in accordance with
the National Electrical Code. Separate field supplied discon-
nects are required for each of the three circuits. A single
power block is provided for all of the condenser fans and the
optional
115V
control transformer.
CAUTION: Internal power wiring to the compressors for
the single point versus the the multiple point option are dif-
ferent. It is imperative that the proper field wiring be in-
stalled according to the way the unit is built.
Figures
10,
11 and 12 show typical field wiring that is re-
quired for unit installation. Items that require field wiring are
liquid line solenoids (SV1 and
SV2),
optional hot gas bypass
solenoid (SV5) and the cooling thermostat as well as the unit
power supply.
Figure 10. Typical field wiring diagram for ALP-045C
-
08OC
with 4 steps of capacity control
FIELD WIRING TERMINAL
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FIELD WIRING
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FACTORY WIRING
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OPTIONAL FACTORY WIRING
BK
BLACK WIRING (LINE)
WH
WHlTE
WIRING
(NEUTRALI
Page 14
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IM 269
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