TrueSTEAM Humidification System
25
69-2285EFS—03
appendIx B: adVanced WIrInG
appendIx a: remote InstallatIon
TrueSTEAM nozzle must be injected
into a dedicated duct box. Do not
leave nozzle exposed.
• Required 4 in. clearance from
nozzle to any duct surface.
• Required 24 in. open air space
downstream from nozzle.
• Install fan/blower on upstream
end of duct box.
• Install a grille on downstream
end of duct box.
truesteam wired to a dedicated fan/blower.
truesteam wired to a humidistat in a zoned application.
truesteam wired to a thermostat in a zoned application.
2
2
M28715
GF
GT
G
R
HUM
HUM
HUM
HUM
R
C
24V
24V
TrueIAQ
HZ432
PANEL
OPTIONAL
AIR PROVING
SWITCH
IF AIR PROVING SWITCH IS USED,
SET TRUESTEAM DIP 4 DOWN AND DIP 5 UP.
CONNECT THE THERMOSTATS, DAMPERS, TRANFORMERS AND
SENSOR WIRES AS SHOWN IN THE TRUEZONE HZ432 PANEL
INSTRUCTIONS.
IN TRUEIAQ INSTALLER SETUP, SET ISU #25 TO 3.
3
3
1
1
C
G
R
W
Y
C
RH
W1/E
Y1
M28716
GF
GT
G
R
OPTIONAL
AIR PROVING
SWITCH
VisionPRO IAQ
ZONE 1
2
CONNECT THE THERMOSTATS, DAMPERS,
TRANFORMERS AND SENSOR WIRES AS SHOWN
IN THE TRUEZONE HZ432 PANEL INSTRUCTIONS.
IN VISIONPRO IAQ INSTALLER SETUP, SET
ISU #0374 TO 3.
3
3
1
IF AIR PROVING SWITCH IS USED, SET TRUESTEAM
DIP 4 DOWN AND DIP 5 UP.
1
C
G
R
W
Y
C
RH
W1/E
Y1
HUM
HUM
HUM
HUM
R
C
W1
Y1
G
R
C
W
Y
G
1
2
3
1
2
3
2
HZ432
PANEL
1
1
2
M28714
HUM
HUM
HUM
HUM
R
C
GF
BLACK
OPTIONAL
AIR PROVING SWITCH
C
C
C
L1
RED
L2
120 VAC
120 VAC
R
24V
24V
20VA
TRANSFORMER
# AT120
GENERAL PURPOSE
SPST RELAY
# R8222
FAN / BLOWER
MINIMUM 250 CFM
IN TRUEIAQ INSTALLER SETUP, SET ISU #25 TO 3.
IF AIR PROVING SWITCH IS USED, SET TRUESTEAM DIP 4 DOWN AND DIP 5 UP.
2