Honeywell HM512W1005 - STEP TWO: Make System Fan Regulation Decision

WIRING
STEP TWO: Make System Fan Regulation Decision
SystemFanRegulationisacongurationthatrequiresTrueSTEAMtomonitortheHVACsystemfanandmake
surethefanisonifhumidityisneeded.Thishelpsensurethatairowwilldistributehumidityintothelivingspace,
andpreventswatercondensationintheduct.Therearetwowaystoconguresystemfanregulation,depending
on the humidity control used:
CONFIGURATION 1• –Usingathermostatwithintegratedhumiditycontrol
CONFIGURATION 2• –Usingahumidistatseparatefromthethermostat
Which is right for you?
CONFIGURATION 1 — using a thermostat
with an integrated humidity control such as
VisionPRO IAQ or Prestige — is ideal for
contractors who:
Want integrated control of the humidifier and
HVACsysteminthelivingspace.
Want the system fan to turn on immediately
uponacallforhumidity.
Proceed to “Wiring Basics: Configuration 1”
illustration at top of next page.
CONFIGURATION 2 — using a humidistat
separate from the thermostat such as H8908
or TrueIAQ — is ideal for contractors who:
Use a humidity control separate from
thethermostat.
Wish to avoid excessive air circulation in
thehome.TrueSTEAMfancallswillnotbe
sentoutoftheTrueSTEAMGFterminaluntil
thewatertemperaturereaches176°F(just
beforeboiling).
Note:ThisfeaturecanbeusedwithVisionPROIAQaswell.
See page 21.
Proceed to “Wiring Basics: Configuration 2”
illustration at bottom of next page.
TrueSTEAMHumidicationSystem69-2285EF—01
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