Model IGX Make-Up Air
19
®
Installation
Optional Electrical Accessory Wiring
Remote Panel
The optional remote panel is shipped separately for field
installation and wiring.
24 VAC control wiring must be connected between the
remote panel and the units control center.
All required field wiring is illustrated by dashed lines
on the unit and remote panel ladder diagrams. These
field connections are to be accomplished by point-to-
point wiring from the remote panels terminal strip to the
unit’s terminal strip. Terminals are illustrated as squares
surrounding the terminals ID. For unit specific wiring
requirements please refer to the unit and remote panel
wiring diagram for further illustration.
Note: Any sensor(s) or temperature adjustment dial(s)
located on or in the remote panel must be run with
shielded cable or in separate conduit.
Only the designated terminals shown with dashed lines
on the unit and remote panel ladder diagrams should
be used to establish field control connections. If other
terminals are utilized it can result in component damage
or failed unit operation.
Control Voltage
Manufacturer’s standard control voltage is 24 VAC.
Control wire resistance must not exceed 0.75 ohms
(approximately 285 feet total (86.9 m) length for
14 gauge wire; 455 feet (138.7 m) total length for
12 gauge wire). If the resistance exceeds 0.75 ohms,
an industrial-style relay must be wired in place of the
remote switch. The relay must be rated for at least
5 amps and have a 24 VAC coil. Failure to comply with
these guidelines may cause motor starters to chatter
or not pull in, resulting in contactor failures and/or
motor failures.
Room Temperature Sensing
Devices
One of the following sensors or equivalent may have
been provided and will require field wiring. Refer to
the unit wiring diagram for terminal designations. If a
microprocessor is included with this unit, reference the
supplemental
Microprocessor Controller for Make-Up
Air Reference Guide
for more information.
Room Override Thermostat
Requires wiring to be run in separate
conduit or run with shielded cable.
Unit Controller Room Temperature
Sensor
Requires wiring to be run in separate
conduit or run with shielded cable.
Room Thermostat
Requires wiring to be run in
separate conduit or run with
shielded cable.
Night Setback Thermostat
(occupied/unoccupied mode)
