Typical Unit Wiring Diagrams - Carrier WeatherExpert 48JC04 Installation Instructions Manual

HUMIDI-MIZER CONTROL CONNECTIONS
®
Humidi-MiZer Space RH Controller
®
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). See Fig. 44.
The humidistat is normally used in applications where a tem-
perature control is already provided (units with SystemVu™
control).
Fig. 44 — Accessory Field-Installed Humidistat
Connecting 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. 43) to the 24v barrier located on the left side of
% RELATIVE HUMIDITY
the control box. The raceway provides the UL-required
clearance between high-voltage and low-voltage wiring.
3. Connect one of the leads from the 2-conductor cable to the
Y3 terminal on the SystemVu MBB (Main Base Board).
Connect the other lead to the R terminal on the MBB. See
Fig. 45.
HUMIDISTAT
Fig. 45 — Humidistat Connections to SystemVu™
Main Base Board

TYPICAL UNIT WIRING DIAGRAMS

See Fig. 46-48 for examples of typical unit control and power
wiring diagrams. These wiring diagrams are mounted on the
inside of the unit control box cover.
23
SystemVu
Main Base Board
R
G
Y1
Y2
Y3
W1
W2
C
TB1