WIRING
STEP TWO:
Make System Fan Regulation Decision
System Fan Regulation is a configuration that requires steam humidifier to monitor the HVAC system fan and
make sure the fan is on if humidity is needed. This helps ensure that airflow will distribute humidity into the living
space, and prevents water condensation in the duct. There are two ways to configure 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 H6062
or TrueIAQ — is ideal for contractors who:
Use a humidity control separate from
the thermostat.
Wish to avoid excessive air circulation in the
home. Steam humidifier fan calls will not be
sent out of the steam humidifier 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 35, 42
.
Proceed to “Wiring Basics: Configuration 2”
illustration at bottom of next page.
Steam Humidifier System 69-2285—09
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