Product Manual ALR2-3
ALR 110F – 150F
25
Notes for “Electrical Data Single Point” and “Electrical Data Multiple Point” Power:
1.
Table 10
through
Table 11
, Field Fuse Size for recommended and maximum is based on use of time-delay
fuses.
2.
Unit wire size ampacity (MCA) is equal to 125% of the largest compressor-motor RLA plus 100% of RLA
of all other loads in the circuit including the control transformer.
3.
The control transformer is furnished as standard.
4.
If a separate 115V power supply is used for the control circuit, then size wire for 12 amps.
5.
Recommended power lead wire sizes for 3 conductors per conduit are based on 100% conductor ampacity
in accordance with NEC. Wire sizes for 6 conductors per conduit are based on 80% conductor ampacity in
accordance with NEC. Voltage drop has not been included. Therefore, it is recommended that power leads
be kept short. All terminal block connections must be made with copper (type THW) wire.
6.
The unit power terminal block may have 2 lugs per phase. Single or parallel conductors should be used for
power connections as listed under “Recommended Power Lead Wire Size.”
7.
“Recommended Fuse Sizes” are selected at approximately 150% of the largest compressor RLA, plus 100%
of all other loads in the circuit.
8.
“Maximum Fuse Sizes” are selected at approximately 225% of the largest compressor RLA, plus 100% of
all other loads in the circuit.
9.
The recommended power lead wire sizes are based on an ambient temperature of 86°F. Ampacity
correction factors must be applied for other ambient temperatures. Refer to the National Electrical Code
Handbook.
10.
The MCA may vary depending on options selected (SpeedTrol, totally enclosed fan motors).
Voltage Limitations:
Within 10% of nameplate rating.
Notes for “Compressor and Condenser Fan Amp Draw”:
1.
Compressor RLA values are for wiring sizing purposes only but do not reflect normal operating current
draw at rated capacity. If unit is equipped with SpeedTrol condenser fan motors, the first motor on each
refrigerant circuit is a single phase, 1hp motor, with a FLA of 2.8 amps at 460 volts, 5.6 amps at 208, 230,
and 575 volts.
2.
Compressor LRA for reduced inrush start is for the first winding only. If the unit is equipped with
SpeedTrol motors, the first motor is a single phase, 1 hp motor, with a LRA of 7.3 amps at 460 volts, 14.5
amps at 208, 230 and 575 volts.
Notes for “Field Wiring Data” - Both Single and Multiple Point Power:
1.
Optional disconnect switch is only available on single power source units.
2.
Single point power supply requires a single disconnect to supply electrical power to the unit. This power
must be fused.
3.
Multiple point power supply requires three independent power circuits, each with separate disconnect.
4.
All field wiring to unit power block or optional non-fused disconnect switch must be copper.
5.
All field wire size values given in table apply to 75°C rated wire per NEC.
Содержание ALR 110F
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