Model IGX Make-Up Air
17
®
Installation
Line Voltage Electrical Wiring
5. Wire Evaporative Cooling Pumps
Reference the unit wiring diagram attached to the
inside of the unit control center door. Locate the “Evap
Pump(s)” on the wiring diagram. If they are connected
with solid lines indicating factory wiring, no field wiring
is required.
If the evaporative pump(s) are shown with dashed lines
indicating field wiring, wire the pumps to the terminals
indicated in the unit control center.
Larger units may require a separate 115 VAC power
source. If this is necessary, it will be indicated on the
wiring diagram. Wire a separate 115 VAC power supply
as indicated on the wiring diagram to power the pumps.
2. Provide the Opening(s) for the Electrical
Connections
Electrical openings vary by unit size and arrangement
and are field-supplied.
3. Connect the Main Power
Connect the main power lines to the disconnect switch
and main grounding lug(s). Torque connections to
disconnect according manufacturer specifications.
4. Wire the Optional Convenience Outlet
The convenience outlet requires a separate 115V power
supply circuit. The circuit must include short circuit
protection supplied by others.
Before connecting power to the unit, read and
understand the following instructions and wiring
diagrams. Complete wiring diagrams are attached on
the inside of the control center door(s).
All wiring must be done in accordance with the latest
edition of the National Electrical Code NFPA 70 and any
local codes that may apply. In Canada, wiring must be
done in accordance with the Canadian Electrical Code.
The equipment must be properly grounded. Any
wiring running through the unit in the airstream must
be protected by metal conduit, metal clad cable
or raceways.
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Evap Pump Factory Wiring Example
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Evap Pump Field Wiring Example
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Separate Power Wiring Example
Refer to wiring diagram for unit specific wiring
CAUTION
If replacement wire is required, it must have a
temperature rating of at least 105ºC.
Any wiring deviations may result in personal injury or
property damage. Manufacturer is not responsible
for any damage to, or failure of the unit caused by
incorrect field wiring.
DANGER
High voltage electrical input is needed for this
equipment. This work should be performed by a
qualified electrician.
1. Determine the Size of the Main Power Lines
The unit’s nameplate states the voltage and the unit’s
MCA. The main power lines to the unit must be sized
accordingly. The nameplate is located on the outside of
the unit on the control panel side.
Electrical Nameplate
