Unit Without Thru−Base Connection Kit; Heat Anticipator Settings; Electric Heaters - Carrier 50HCQ Installation Instructions Manual

Unit without Thru−Base Connection Kit —
Pass the thermostat control wires through the hole
provided in the corner post; then feed the wires through
the raceway built into the corner post to the control box.
Pull the wires over to the terminal strip on the upper−left
corner of the Central Terminal Board (CTB). See Fig. 31.
RACEWAY
HOLE IN END PANEL (HIDDEN)
Fig. 31 − Field Control Wiring Raceway
NOTE: If thru−the−bottom connections accessory is
used, refer to the accessory installation instructions for
information on routing power and control wiring.
Heat Anticipator Settings —
Set heat anticipator settings at 0.14 amp for the first stage
and 0.14 amp for second−stage heating, when available.

Electric Heaters

50HCQ units may be equipped with field−installed
accessory electric heaters. The heaters are modular in
design, with heater frames holding open coil resistance
wires strung through ceramic insulators, line−break limit
switches and a control contactor. One or two heater
modules may be used in a unit.
Heater modules are installed in the compartment below
the indoor (supply) fan outlet. Access is through the
indoor access panel. Heater modules slide into the
compartment on tracks along the bottom of the heater
opening. See Fig. 32, Fig. 33 and Fig. 34.
Not all available heater modules may be used in every
unit. Use only those heater modules that are UL listed for
use in a specific size unit. Refer to the label on the unit
cabinet for the list of approved heaters.
Unit heaters are marked with Heater Model Numbers. But
heaters are ordered as and shipped in cartons marked with
a corresponding heater Sales Package part number. See
Table 7 for correlation between heater Model Number and
Sales Package part number.
NOTE: The value in position 9 of the part number differs
between the sales package part number (value is 1 or 3)
and a bare heater model number (value is 0).
DISCONNECT MOUNTING
LOCATION
UNIT BLOCK-OFF
PANEL
Fig. 32 − Typical Access Panel Location
DISCONNECT EMT OR RIGID CONDUIT
MOUNTING (FIELD-SUPPLIED)
LOCATION
C08027
MAIN BRACKET AND
CONTROL CONDUIT
BOX DRIP BOOT
Fig. 33 − Typical Component Location
Fig. 34 − Typical Module Installation
23
OUTDOOR
ACCESS PANEL
SINGLE CENTER
POINT BOX POST
SINGLE POINT
BOX HEATER HEATER
MOUNTING MODULE MODULE
SCREW (LOCATION 1) (LOCATION 2)
CONTROL WIRE TERMINAL BLOCK
INDOOR
ACCESS
PANEL
C08133
MANUAL RESET
LIMIT SWITCH
HEATER
COVERS
HEATER
MOUNTING
BRACKET
C08134
TRACK
FLANGE
C08135