Honeywell TrueSTEAM HM506 Installation Manual page 42

Wiring IVlultiple TrueSTEAlVls to One Humidity Control
Conventional
Thermostat
Y
z_ Ensure thermostat isolates Y from G.
All Honeywell Prestige, VisionPRO, and
FocusPro thermostats do this.
GF
R
C
HUM
TrueSTEAM
GTi
R
C
Humidity
Control
GF
HUM
R
G
R
C
M29641
4O TrueSTEAM Humidification System 69-2285EF--01