20
Fig. 34 — Low-Voltage Thermostat Connections
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. 35.
NOTE: If thru-the-bottom connections accessory is used, refer to
the accessory installation instructions for information on routing
power and control wiring.
Fig. 35 — 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.
HUMIDI-MIZER
®
CONTROL CONNECTIONS
Humidi-MiZer Space RH Controller
NOTE: The Humidi-MiZer system is a factory-installed option.
Humidi-MiZer system is not available for single phase (-3 voltage
code) models.
The Humidi-MiZer dehumidification system requires a field-
supplied and field-installed space relative humidity control de-
vice. This device may be a separate humidistat control (contact
closes on rise in space RH above control setpoint) or a combi-
nation thermostat-humidistat control device such as Carrier’s
Edge
®
Pro Thermidistat™ device with isolated contact set for
dehumidification control. See Fig. 36 and Fig. 37. The humidi-
stat is normally used in applications where a temperature con-
trol is already provided (units with SystemVu™ control).
Fig. 36 — Accessory Field-Installed Humidistat
Fig. 37 — Edge
Pro Thermidistat
HUM
G
W2
W2
G
W1
O/B/Y2
Y2
R
W1
R
Y1
Y1
T
H
E
R
M
O
S
T
A
T
(Note 1)
(Note 2)
Note 1: Typical multi-function marking. Follow manufacturer’s configuration
Instructions to select Y2.
Note 2: Y2 to Y2 connection required on single-stage cooling units when
integrated economizer function is desired.
Field Wiring
Unit
Control
Board
Typical
Thermostat
Connections
C
C
RACEWAY
HOLE IN END PANEL (HIDDEN)
% RELATIVE HUMIDITY
®