507838-01
Issue 1813
Page 13 of 19
Making Electrical Connections
Run 24V Class II wiring only through specified low
voltage opening. Run line voltage wiring only through
specified high voltage opening. Do not combine voltage
in one opening.
WARNING
USE COPPER CONDUCTORS ONLY.
CAUTION
This unit is provided with knock-outs for conduit. Refer to
Figure 11 for unit wiring diagram, which includes all field
wiring. Separate openings have been provided for 24V low
voltage and line voltage. Refer to the dimension illustration
on Page 2 or Page 3 for specific location.
Wiring must conform to the current National Electric Code
ANSI/NFPA No. 70, or Canadian Electric Code Part I,
CSA Standard C22.1, and local building codes. Refer to
following wiring diagrams. See unit nameplate for minimum
circuit ampacity and maximum overcurrent protection size.
Select the proper supply circuit conductors in accordance
with tables 310-16 and 310-17 in the National Electric
Code, ANSI/NFPA No. 70 or tables 1 through 4 in the
Canadian Electric Code, Part I, CSA Standard C22.1.
The motor speed is set by the speed tap connection to the
low voltage terminal strip in the control section. The speed
can be increased by swapping wires as shown in Figure
11.
Wiring Connections
1. Install line voltage power supply to unit from a properly
installed circuit breaker.
2. Ground unit at unit disconnect switch or to an earth
ground.
NOTE:
Connect conduit to the unit using a proper
conduit fitting. Units are approved for use only with
copper conductors. A complete unit wiring diagram is
located on the back side of the unit’s access panel.
3. Install low voltage wiring from outdoor to indoor unit
and from thermostat to indoor unit.
NOTE: For proper voltages, select thermostat wire
gauge per the following chart:
Wire Run Length
AWG#
Insulation / Core Types
Less than 100’ (30m)
18
Color coded, temperature
rating 95°F (35°C)
minimum, solid core
More than 100’ (30m)
16
Table 6. Run Length (Class II Rated Wiring)
circuit connections are made in
the control panel.
Install room thermostat (ordered separately) on an inside wall
approximately in the center of the conditioned area and 5 feet (1.5m)
from the floor. It should not be installed on an outside wall or where it
can be affected by sunlight or drafts.
THERMOSTAT
5 FEET
(1.5M)
NOTE - 24 VAC, Class II
Ground unit at disconnect switch or to an earth ground.
NOTE - Units are approved for use only with copper conductors.
Figure 10. Thermostat Installation
