Honeywell TrueSTEAM HM612A1000/U Installation Manual page 61

B: Advanced Steam Humidifier Wiring
OPTION 6: Prestige IAQ or All New VisionPRO without fan delay
• Follow this diagram if you are using Prestige IAQ to turn system fan on immediately with humidity call.
1 2
ON
OFF
Steam Humidifier System 69-2285—11
THX9421R
3 4 5
6
THM5421R
PRESTIGE IAQ AND STEAM HUMIDIFIER WITHOUT FAN DELAY
R
C
W
W2
Y
G
FURNACE
24V
24V
HUM
HUM
C
GT
R
RT
GF
EXT
STEAM HUMIDIFIER
M32919B
59