33
Route the low voltage wire to the Integrated Staging Control
(ISC) board. See Fig. 40.
NOTE: If utilizing the through the base connections, route the low
voltage wire through the wire ties to the ISC board.
Configure for Electric Heat: To configure the factory-approved
thermostat, open the Advanced Setup menu, scroll down to
ELECTRIC HEAT and change RANGE value from OFF to
ON. Consult the thermostat installation instructions for full
details.
Fig. 40 — Field Control Wiring Raceway
HEAT ANTICIPATOR SETTINGS
Set heat anticipator settings at 0.14 amp for the first stage and
0.14 amp for second-stage heating.
TRANSFORMER CONNECTION FOR 208-V POWER
SUPPLY
All units except 208/230-v units are factory wired for the volt-
age shown on the nameplate.
If the 208/230-v unit is to be con-
nected to a 208-v power supply, the control transformer must
be rewired by moving the black wire with the
1
/
4
-in. female
spade connector from the 230-v connection and moving it to
the 208-v
1
/
4
-in. male terminal on the primary side of the trans-
former.
Refer to unit label diagram for additional information.
ELECTRIC HEATERS
The 50LC units may be equipped with factory or field-installed
electric heaters. The heaters are modular in design.
Heater modules are installed in the compartment below the in-
door blower access panel. Access is through the electric heat
access panel. Heater modules slide into the compartment on
tracks along the bottom of the heater opening. See Fig. 41-43.
Refer to the Electric Heater Kit Installation Instructions for
complete details on field installed electric heat accessory.
Not all available heater modules may be used in every unit.
Use only those heater modules that are ETL listed for use in a
specific size unit. Refer to the label on the unit cabinet for the
list of approved heaters.
Fig. 41 — Typical Access Panel Location
Fig. 42 — Typical Component Location
Fig. 43 — Electric Heater Compartment (Cover
Removed)
Low-Voltage Control Connections
Locate the plug assembly in the electric heater section of the
main unit. Connect the plug with the mating low voltage plug
located on the heater. Note that the plug will already be con-
nected when there is factory installed electric heat (see
Fig. 44).
RUBBER
GROMMET
CORNER
POST
WIRE
TIES
THRU THE BASE
CONNECTION
CONTROL BOX
ACCESS
PANEL
FILTER AND
INDOOR COIL
ACCESS
PANEL
INDOOR BLOWER
ACCESS PANEL
ELECTRIC HEAT
ACCESS PANEL
INDOOR BLOWER
ACCESS PANEL
HEATER
MODULE
FILTER
AREA
MAIN CONTROL
BOX
ELECTRIC HEATER
TRACKS
ELECTRIC HEATER
OPENING
Summary of Contents for 50LC 14
Page 26: ...26 Fig 34 50LC 14 26 Control Wiring Diagram...
Page 27: ...27 Fig 35 50LC 14 26 RTU Open Control Wiring Diagram...
Page 28: ...28 Fig 36 50LC 14 20 208 230V 3 Phase Power Wiring Diagram...
Page 29: ...29 Fig 37 50LC 24 26 208 230V 3 Phase Power Wiring Diagram...
Page 30: ...30 Fig 38 50LC 14 26 460V 575V 3 Phase Power Wiring Diagram...