Unit Without Thru- - Base Connection Kit; Heat Anticipator Settings; Humidi- -Mizer R System Control Connections; Humidi- - Mizer System - Space Rh Controller - Carrier WeatherExpert 48LC 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 (see Fig. 42) to the
control box. Pull the wires over to the terminal strip on the
upper- - left corner of the Controls Connection Board.
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.
RACEWAY
HOLE IN END PANEL (HIDDEN)
Fig. 42 - - Field Control Wiring Raceway
R
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
Dehumidification system.
Humidi- - MiZer System – Space RH Controller —
The Humidi- - MiZer dehumidification system requires a
field- - supplied and installed space relative humidity control
device. This device may be a separate humidistat control
(contact closes on rise in space RH above control setpoint)
or a combination thermostat- - humidistat control device with
isolated contact set for dehumidification control.
Humidistat
Fig. 44 - - Typical Humidi- - MiZer Adaptive Dehumidification System Humidistat Wiring
C08027
Humidi- - MiZer Adaptive
NOTE: Use of a humidistat device is not permitted on
48LC units equipped with RTU Open control; these units
require use of
(33ZCSENSRH- - 02 or 33ZHCSENDRH- - 02, or a ZS series
sensor with humidity sensing. SystemVut 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. 42) to the 24- - v barrier located on the
left side of the control box. The raceway provides the
UL- - required clearance between high- - voltage and
low- - voltage wiring.
3. Use wire nuts to connect humidistat cable to the leads
in the low–voltage wiring (as shown in Fig. 44), con-
necting PNK to PNK and PNK/BLK to PNK/BLK.
Fig. 43 - - Accessory Field- - Installed Humidistat
NOTE:
48LC**07 units require a 3--stage cooling
thermostat device and are not compatible with Carrier's
R
Edge Pro thermidistat.

RTU Open Controller (Factory- -Installed Option)

For details on operating 48LC**07 units equipped with
the factory- - installed RTU Open controller option refer to
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**07 units equipped with the
factory-installed SystemVu control option refer to

48/50LC 04-26 Single Package Rooftop Units with
SystemVu Controls Version 2.X Controls, Start-up,
Operation and Troubleshooting manual.
29
a field- - supplied RH
% RELATIVE HUMIDITY
sensor
C09295
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