Heat Anticipator Settings; Electric Heaters - Carrier WeatherMaster 50GC 04-06 Series Installation Instructions Manual

can provide this signal but they are not configured to enable this
signal as shipped.
Install the accessory thermostat according to installation instruc-
tions included with the accessory.
Locate the thermostat accessory on a solid wall in the conditioned
space to sense average temperature in accordance with the ther-
mostat installation instructions.
If the thermostat contains a logic circuit requiring 24-v power, use
a thermostat cable or equivalent single leads of different colors
with minimum of seven leads. If the thermostat does not require a
24-v source (no "C" connection required), use a thermostat cable
or equivalent with minimum of six leads. See Fig. 31. Check the
thermostat installation instructions for additional features which
might require additional conductors in the cable.
Typical
Thermostat
Connections
C
G
W2
(Note 3)
W1
O/B/Y2
(Note 1) (Note 2)
Y1
R
Notes:
1. Typical multi-function marking. Follow manufacturer's configuration
instructions to select Y2.
2. Y2 to Y2 connection required on single-stage cooling units when
integrated economizer function is desired
3. W2 connection not required on units with single-stage heating.
Field Wiring
Fig. 31 — Low-Voltage Thermostat Connections
Unit Control
Board
C
HUM
T
H
G
E
R
W2
M
O
W1
S
T
Y2
A
T
Y1
R
18
For wire runs up to 50 ft (15 m), use no. 18 AWG (American Wire
Gage) insulated wire [35°C (95°F) minimum]. For 50 to 75 ft (15
to 23 m), use no. 16 AWG insulated wire [35°C (95°F) minimum].
For over 75 ft (23 m), use no. 14 AWG insulated wire [35°C
(95°F) minimum]. Wire sizes larger than no. 18 AWG cannot be
directly connected to the thermostat and will require a junction
box and splice at the thermostat.
Thermostat Wiring, Units 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 Unit Control Board. See
Fig. 32.
NOTE: If thru-the-bottom connections accessory is used, refer to
the accessory installation instructions for information on routing
power and control wiring.
RACEWAY
HOLE IN END PANEL (HIDDEN)
Fig. 32 — 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, when available.

ELECTRIC HEATERS

The 50GC units may be equipped with factory or field installed
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. See
Fig. 33-35.
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 ap-
proved heaters.
Refer to the Small Roof Top Units Accessory Electric Heater and
Single Point Box installation instructions for further details.