39
Fig. 52 — 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 voltage
shown on the nameplate. If the 208/230-v unit is to be connected
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 transformer. Refer to unit label
diagram for additional information.
RTU Open Controller (Factory-Installed Option)
For details on operating 48LC*014-26 units equipped with the
factory-installed RTU Open option, refer to the 48/50LC 07-26
Factory Installed Option RTU Open Multi-Protocol Controller
Controls, Start-up, Operation and Troubleshooting manual.
SystemVu™ Controller (Factory-Installed
Option)
For details on operating 48LC*014-26 units equipped with the
factory-installed SystemVu control option, refer to the 48/50LC
07-26 Single Package Rooftop Units with SystemVu Controls
Version 2.X Controls, Start-up, Operation and Troubleshooting
manual.
Humidi-MiZer
®
System Control Connections
NOTE: It is suggested to ensure the Auto-Changeover function of
an installed thermostat is enabled when used in conjunction with
the Humidi-MiZer Adaptive Dehumidification system.
HUMIDI-MIZER SYSTEM – SPACE RH CONTROLLER
The Humidi-MiZer dehumidification system requires a field-sup-
plied and installed space relative humidity control device. This de-
vice may be a separate humidistat control (contact closes on rise in
space RH above control setpoint) or a combination thermostat-hu-
midistat control device with isolated contact set for dehumidifica-
tion control. See Fig. 53.
NOTE: Use of a humidistat device is not permitted on 48LC units
equipped with RTU Open control; these units require use of a
field-supplied RH sensor (33ZCSENSRH-02 or 33ZHCSEN-
DRH-02), or a ZS series sensor with humidity sensing. System-
Vu™ controls requires a Space Humidistat (HL38MG029) or a
Wall Mount Space Humidity Sensor (33ZCSENSRH-01) or a
Duct Mount Humidity Sensor (33ZCSENDRH-01).
To connect the Carrier humidistat (HL38MG029):
1. Route the humidistat 2-conductor cable (field-supplied)
through the hole provided in the unit corner post.
2. Feed wires through the raceway built into the corner post (see
Fig. 52) to the 24-v barrier located on the left side of the con-
trol box. The raceway provides the ETL-required clearance
between high-voltage and low-voltage wiring.
3. Use wire nuts to connect humidistat cable to two PINK leads
in the low-voltage wiring as shown in Fig. 54.
NOTE: 48LC**14-26 units require a 3-stage cooling thermo-
stat device and are not compatible with Carrier’s Edge
®
Pro
thermidistat.
Fig. 53 — Accessory Field-Installed Humidistat
RUBBER
GROMMET
CORNER
POST
WIRE
TIES
THRU THE BASE
CONNECTION
% RELATIVE HUMIDITY
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