IOMM AGZ-5 AGZ 026B through 130B 49
Notes for “Electrical Data Single- and Multi-Point” Power:
1. 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.
2. The control transformer is furnished and no separate 115V power is
required. For both single- and multi-point power connections, the control
transformer is in circuit #1 with control power wired from there to circuit
#2. In multi-point power, disconnecting power to a circuit will disconnect
all control power to the unit.
3. If a separate 115V power supply is used for the control circuit, then the
wire sizing amps is 10 amps for all unit sizes.
4. Recommended power lead wire sizes for 3 conductors per conduit are
based on 100% 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.
5. “Recommended Fuse Sizes” are selected at approximately 150% to 175%
of the largest compressor RLA, plus 100% of all other loads in the circuit.
6. “Maximum Fuse or HACR breaker size” is selected at approximately
225% of the largest compressor RLA, plus 100% of all other loads in the
circuit.
7. The recommended power lead wire sizes are based on an ambient
temperature of 86°F (30°C). Ampacity correction factors must be applied
for other ambient temperatures. Refer to the National Electrical Code
Handbook.
8. Must be electrically grounded according to national and local electrical
codes.
Voltage Limitations:
Within ± 10 percent 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.
Notes for “Field Wiring Data”
1. Requires a single disconnect to supply electrical power to the unit. This
power supply must either be fused or use an HACR type circuit breaker.
2. All field wiring to unit power block or optional non-fused disconnect
switch must be copper.
3. All field wire size values given in the tables apply to 75°C rated wire per
NEC.
Circuit Breakers
Factory-installed circuit breakers are standard on units with single point power supply
only. This option provides unit-installed compressor short circuit protection and makes
servicing easier.
Connection Type Power Block
Disconnect
Swt.
Circuit
Breakers
High Short
Circuit Current
Single Point (Standard) Std Opt. Std Opt
Multi-Point (Optional) Std Opt. Not Avail. Opt.
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