Humidification And Dehumidification; Air Handler And Fan Powered Humidifier - Johnson Controls Hx 3 S1-THXU430W Installation Manual

5407934-UIM-C-1119
Communicating Air Handler
Hx3
THERMOSTAT
A+
R
C
B -
B-
A1249-001
FIGURE 20: Air Handler and Fan Powered Humidifier
SECTION V: HUMIDIFICATION AND
DEHUMIDIFICATION
This section outlines how the humidification and dehumidification func-
tionality operates in communicating and conventional (non-communicat-
ing) systems.
The following tables show humidification and dehumidification options
for each system type. For more information about humidification and
dehumidification settings, see the System Settings Overview section.
28
AIR HANDLER
COMMUNICATING
CONTROL
A+
R
C
B-
R
G
Y/Y2
Y1
W2
W1
O
HUM
X/L
COM
HUM OUT
HUM
HUM
AC/HP
COMMUNICATING
CONTROL
A+
R
C
B-
24VAC RELAY
FAN POWERED
CONTACTOR
WALL
OUTLET
GND.
LUG
Johnson Controls Ducted Systems
HUMIDIFIER