Installation guide

ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in per-
sonal injury or death.
Turn off the main (remote) disconnect device be-
fore working on incoming (field) wiring.
Incoming (field) wires on the line side of the dis-
connect found in the fan coil unit remain live, even
when the pull-out is removed. Service and main-
tenance to incoming (field) wiring cannot be per-
formed until the main disconnect switch (remote
to the unit) is turned off.
A. LINE VOLTAGE CONNECTIONS
This Fan Coil is not electric heat compatable.
1. Connect 208/240V power leads from field discon-
nect to units high voltage terminal block.
2. Connect ground wire to unit ground lug.
B. 24V CONTROL SYSTEM
Connection to Unit
Wire low voltage in accordance with wiring label on the
unit. Use 18 AWG color-coded, insulated (35 degrees C
minimum) wire to make the low-voltage connections be-
tween the thermostat, the unit, and the outdoor equip-
ment. If the thermostat is located more than 100 feet from
the unit (as measured along the low voltage wire), use 16
AWG color-coded, insulated (35 degrees C minimum)
wire. All wiring must be NEC Class 2 and must be sepa-
rated from incoming power leads. Refer to outdoor unit
wiring instructions for additional wiring recommenda-
tions.
NOTE: Before proceeding with electrical connections,
make certain that supply voltage, frequency, phase, and
circuit ampacity are as specified on the unit rating plate.
See unit wiring label for proper field high and low voltage
wiring. Make all electrical connections in accordance with
the NEC and any local codes or ordinances that may ap-
ply. Use copper wire only. The unit must have a separate
branch electric circuit with a field-supplied disconnect
switch located within sight from, and readily accessible
from the unit.
Transformer Information
Transformer is factory wired for 208/240V operation.
Figure 4 [ Transformer Connections
BLUE
24VAC
t 1TRANSFOR_R
L 20g'240',/AC J
_ O;RANGE
WHITE
C. GROUND CONNECTIONS
ELECTRICAL SHOCK HAZARD
Failure to establish uninterrupted or unbroken
ground could result in personal injury and/or
death.
According to NEC, ANSI/NFPA 70, and local
codes, the cabinet must have an uninterrupted or
unbroken ground in order to minimize potential
for personal injury or death if an electrical fault
should occur. The ground may consist of electri-
cal wire or metal conduit when installed in accor-
dance with existing electrical codes. If conduit
connection uses reducing washers, a separate
ground wire must be used.
NOTE: Use UL listed conduit and conduit connectors for
connecting supply wire(s) to unit to obtain proper ground-
ing. Grounding may also be accomplished by using
grounding lugs provided in control box.
D. MINIMUM CFM AND MOTOR SPEED SELECTION
Units require a minimum CFM. Refer to the unit wiring la-
bel to ensure that the fan speed selected is not lower than
the minimum fan speed indicated.
Fan speed selection is done at the fan relay. To change
motor speeds, disconnect fan lead used on relay terminal
(FR) and replace with motor speed lead desired (refer to
Figure 8). Save insulating cap and place on motor lead
removed from relay.
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