Honeywell Steam Humidifier Professional Installation Manual page 32

IMPORTANT NOTE: The images below are not complete wiring diagrams. It only depicts power monitoring and
is not meant to be a stand alone diagram. Please refer to the "Wiring the steam humidifier" section in the following
pages for complete wiring diagrams.
Steam
Humidifer
1 2 3 4 5
On
Off
Humidity Control
HUM
HUM
30
Thermostat with
Humidity Control
1
2 3
HUM
HUM
C
6
Steam Humidifier
R
C
1 2 3 4 5 6
On
Off
WIRING BASICS: CONFIGURATION 1
When using a thermostat with integrated
humidity control (such as VisionPRO IAQ
or Prestige):
HVAC System
•
R
•
•
M29615A
WIRING BASICS: CONFIGURATION 2
HVAC System
When using a humidistat separate from the
thermostat (such as H6062 or TrueIAQ):
•
•
M29616B
The thermostat is powered by the system
transformer. In this configuration, the
thermostat must have power or steam
humidifier will not be able to
produce steam.
Because the thermostat knows when the
system transformer has power, set DIP 4
to UP, so that it is not looking for an R input
from the system R.
If Thermostat is NOT POWERED by the
system transformer, it is required to monitor
the R input. Leave DIP 4 DOWN. (factory
setting)
Steam humidifier generally supplies power
to the humidistat. In this configuration,
steam humidifier must monitor HVAC
system power to determine if humidity is
allowed.
Leave DIP 4 in the DOWN position (factory
setting), and wire the HVAC system R and
C to the steam humidifier R and C. Steam
humidifier will verify power is present
before allowing steam production.
Steam Humidifier System 69-2285—09