B: Advanced Steam Humififier Wiring - Honeywell TrueSTEAM HM612A1000/U Installation Manual

B: Advanced Steam Humidifier Wiring
CAUTION: Voltage Hazard.
Before wiring to HVAC terminals, disconnect HVAC equipment power. Make sure Steam
Humidifier is not plugged in.
Follow the diagram for control options 1 through 14 to wire the Steam Humidifier. Refer to the installation manual
provided with the control for additional instructions if needed.
HVAC
R C W Y G
AIR FLOW SWITCH (AFS)
R Rc W Y G
THERMOSTAT
HVAC
R C W Y G
AIR FLOW SWITCH (AFS)
R Rc W Y G
THERMOSTAT
56
HumidiPRO
Inside
% Setting
%
HUMIDITY BOOST
Light System
Auto
Next Auto
R
C
U
U
OUTDOOR
S
SENSOR
S
(OPTIONAL)
24V
RECOMMENDED
24V
HUM
HUM
C
GT
R
RT
GF
EXT
1
HUM
HUM
24V
24V 24V
24V
RECOMMENDED
HUM
HUM
C
GT
R
RT
GF
EXT
STEAM HUMIDIFIER - INTERNAL
1
OPTION 1: Dry-contact Mechanical
Humidistat Wiring
Make sure that the thermostat used
1
isolates Y from G. All Honeywell Prestige,
VisionPRO IAQ, VisionPRO, and Focus Pro
STEAM HUMIDIFIER
thermostats do this.
M34831A
OPTION 2: TrueIAQ Wiring
ELECTRONIC
HUMIDISTAT
1
• Make sure that the thermostat used
isolates Y from G. All Honeywell Prestige,
HVAC
VisionPRO IAQ, VisionPRO, and Focus
POWER
MASTER
Pro thermostats do this.
• For the TrueIAQ Installer Setup, set ISU
#25 to 3.
On
M24757B
2
1 3 4
Off
AFS Monitor Recommended
Steam Humidifier System 69-2285—11
5 6
M32913