Honeywell TrueSTEAM HM506 Installation Manual page 18

STEP TWO: Make System Fan Regulation Decision
System Fan Regulation is a configuration that requires TrueSTEAM 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.
CON F!GURATION 2 _Usinga
hu mid!star
separate frO" t he t hermostat suchas N8908
or TruelAQ _ is ideal for contractors who:
useahumidity c0nti0_ S÷parate iiom
!n
h°me TrueS_EAM _an ca!_s wi! ! not b e
GF termina! un!i!
the water temperature reaches 176°F (just
Note: This feature Can be used with VisionPRO IAQ as well.
Proceed to "Wiring Basics: Configuration 1"
illustration at top of next page.
Proceed to !!Wiring Basics/ Configuration 211
illustration at bottom of next page. .........................
16 TrueSTEAM Humidification System 69-2285EF--01