Honeywell TrueSTEAM HM612A1000/U Installation Manual page 64

B: Advanced Steam Humidifier Wiring
OPTION 10: Steam Humidifier wired to a dedicated fan/blower
ISU 25 must be set to 3
1
62
AFS
STEAM
HUMIDIFIER
R
TRANSFORMER
L1
L1
(120 VOLT
HOT)
L2
(120 VOLT
COMMON)
1 2
3 4
1)
On
Off
(AFS Monitor Recommended)
C
3
1
L2
R8222
1 2
5 6
2)
On
Off
Alternative (Power Monitor Setting)
1
TrueIAQ
FAN
M33056
3 4 5 6
M32922A
Steam Humidifier System 69-2285—11