VRC Series IOM
9
IOM-M2-0316
Technical Support: (800) 789-8550
Part Number 478603
Electrical Connections
Wiring Hole Locations
Drill location labels are provided on the right side of
the controls cabinet for power and control wiring
connections. All electrical connections should be
made in accordance with local building codes.
Power Wiring
All remote condensers are provided with a factory-
mounted disconnect. The condenser requires its own
power point connection. No high voltage power wires
are required between the ventilator unit and
condenser.
Control Wiring
Depending on the head pressure control option
provided, 2-5 control wires may need to be connected
between the ventilator unit and condenser. Refer to
the table below for required field wiring. All control
wiring is low voltage (24 volts or less). Fan
modulation signal wiring (0-10 VDC) between units
should be through a field-supplied, 2-conductor, 20
AWG, shielded and stranded cable. Fan start/stop
relay wiring should be through a field-supplied,
multi-conductor, 20 AWG cable. Modulation signal
wire must be separate from start/stop wire. All
control wiring is terminated at the terminal strip in
each unit.
Field Control Wiring Requirements
All units require 3-phase power wiring in addition to the following control wiring.
VPR/VRC
Case
AHPC 1.0
AHPC 2.0
Shielded
Conductors
Unshielded
Conductors
Total
Conductors
Shielded
Conductors
Unshielded
Conductors
Total
Conductors
110
2
2
4
2
0
2
210
2
3
5
2
0
2
310
2
3
5
2
0
2
