Honeywell HM512W1005 - Using the Correct Control Diagram

WIRING
Followthediagramforcontroloptions1through5towiretheTrueSTEAM.Refertotheinstallationmanual
providedwiththecontrolforadditionalinstructionsifneeded.
OPTION 1: Dry-contact Mechanical
Humidistat Wiring
1
Makesurethatthethermostatused
isolatesYfromG.AllHoneywellPrestige,
VisionPROIAQ,VisionPRO,andFocusPro
thermostatsdothis.
OPTION 2: TrueIAQ Wiring
1
Makesurethatthethermostatused
isolatesYfromG.AllHoneywellPrestige,
VisionPROIAQ,VisionPRO,andFocusPro
thermostatsdothis.
2
FortheTrueIAQInstallerSetup,setISU
#25to3.
65432
On
Off
1
H8908
Tr ueSTEAM
HVAC System
HUM
HUM
C
R
Thermostat
GT
G
GF
W
C
R
1
G
Y
M29622
65432
On
Off
1
Tr ueIAQ
Tr ueSTEAM
HVAC System
HUM
HUM
C
R
R
Thermostat
G
GT
GF
Y
W
C
R
24V
24V
1
2
G
C
M29623
Using the Correct Control Diagram
CAUTION: Voltage Hazard.
Before wiring to HVAC terminals, disconnect HVAC equipment power. Make sure TrueSTEAM
is not plugged in.
TrueSTEAMHumidicationSystem69-2285EF—01
20