5407934-UIM-C-1119
28 Johnson Controls Ducted Systems
Communicating Air Handler
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.
FIGURE 20: Air Handler and Fan Powered Humidifier
B-
C
B-
R
W1
O
X/L
R
G
Y1
COM
A+
C
B-
R
A+
C
B-
R
A+
HUM OUT
HUM
HUM
CONTACTOR
WALL
OUTLET
AIR HANDLER
COMMUNICATING
CONTROL
AC/HP
COMMUNICATING
CONTROL
120 VAC PLUG
GND.
LUG
FAN POWERED
HUMIDIFIER
Y/Y2
HUM
W2
A1249-001
24VAC RELAY
Hx3
THERMOSTAT
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