Modine Manufacturing PD - Electrical Connection Procedures; Electrical Connection Safety; Wiring and Grounding Compliance; Power Supply Requirements

8
INSTALLATION
Electrical Connections
1. Installation of wiring must conform with local building codes, or in
the absence of local codes, with the National Electric Code
ANSI/NFPA 70 - Latest Edition. Unit must be electrically grounded
in conformance to this code. In Canada, wiring must comply with
CSA C22.1, Part 1, Electrical Code.
2. Two copies of the unit wiring diagram are provided with each unit.
One is located in the electrical junction box and the other is
suppled in the literature packet. Refer to this diagram for all
wiring connections.
3. Make sure all multi-voltage components (motors, transformers,
etc.) are wired in accordance with the power supply voltage.
4. The power supply to the unit must be protected with a fused or
circuit breaker switch.
5. The power supply must be within 5 percent of the voltage rating
and each phase must be balanced within 2 percent of each other.
If not, advise the utility company.
6. External electrical service connections that must be installed
include:
a. Supply power connection (120, 208, 240, 480, or 600 volts).
b. Connection of thermostats, summer/winter switches, or any
other accessory control devices that may be supplied (24
volts). NOTE: Propeller units supplied with 460/575 power will
require the use of a field step-down transformer. Refer to the
serial plate to determine the unit supply voltage required.
Additional information may be found in table 16.1 and in the
step-down transformer installation instructions.
7. Refer to Figure 15.1 for the electrical junction box locations.
8. All supply power electrical connections are made in the electrical
junction box of the unit. The low voltage (thermostat and
accessory control devices) can be wired to the terminals on the
electrical junction box. Refer to the wiring diagram for the terminal
location of all low voltage wiring.
WARNING
1. Disconnect power supply before making wiring connections to
prevent electrical shock and equipment damage.
2. All appliances must be wired strictly in accordance with wiring
diagram furnished with the appliance. Any wiring different from
the wiring diagram could result in a hazard to persons and
property.
3. Any original factory wiring that requires replacement must be
replaced with wiring material having a temperature rating of at
least 105°C.
4. Ensure that the supply voltage to the appliance, as indicated
on the serial plate, is not 5% greater than rated voltage.
CAUTION
Ensure that the supply voltage to the appliance, as indicated on
the serial plate, is not 5% less than the rated voltage.