Basic Wiring - Honeywell TrueSTEAM Professional Installation Manual

Wire the truesteam according to the diagram that applies to your humidity
10
control.
dry-contact mechanical humidistat wiring.
trueIaq wiring.
CONVENTIONAL
THERMOSTAT
HUM
HUM
H8908
1 ENSURE THERMOSTAT ISOLATES Y FROM G.
ALL HONEYWELL PRESTIGE, VISIONPRO IAQ,
VISIONPRO, AND FOCUS PRO THERMOSTATS
DO THIS.
CONVENTIONAL
THERMOSTAT
2
R 24V
C 24V
HUM HUM
HUM HUM
TrueIAQ
1 ENSURE THERMOSTAT ISOLATES Y FROM G.
ALL HONEYWELL PRESTIGE, VISIONPRO IAQ,
VISIONPRO, AND FOCUS PRO THERMOSTATS
DO THIS.
2 IN TRUEIAQ INSTALLER SETUP, SET ISU # 25 TO 3.
TrueSTEAM Humidification System
R
C
W
Y
1
G
GT
R
C
GF G
DIP4
R
C
W
Y
G
1
GT
R
C
GF
DIP4
11

BasIc WIrInG

Y W C R
M28689
Y W C R
M28690
69-2285EFS—03