Install Instructions

WIRING
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 TrueSTEAM” section in the following pages
for complete wiring diagrams.
WIRING BASICS: CONFIGURATION 1
When using a thermostat with integrated
humidity control (such as VisionPRO IAQ
or Prestige):
• The thermostat is powered by the
system transformer. In this conguration,
the thermostat must have power or
TrueSTEAM 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)
WIRING BASICS: CONFIGURATION 2
When using a humidistat separate from the
thermostat (such as H6062 or TrueIAQ):
• TrueSTEAM generally supplies power
to the humidistat. In this conguration,
TrueSTEAM 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 TrueSTEAM R and C. TrueSTEAM
will verify power is present before allowing
steam production.
65432
On
Off
1
Thermostat with
Humidity Control
HVAC System
TrueSTEAM
1
HUM
HUM
2
3
R
C
M29615
65432
On
Off
1
Humidity Control
HVAC System
Tr ueSTEAM
HUM
HUM
R
C
M29616A
TrueSTEAM Humidication System 69-2285—05
30