APPENDICES
TrueSTEAMHumidicationSystem69-2285EF—01
38
TrueSTEAM Wired to a Dedicated Fan/Blower
TrueSTEAM nozzle must be inserted into
adedicatedductbox.Donotleave
nozzleexposed.
Requires 4-inch clearance from nozzle to •
anyductsurface.
Requires 24-inch open air space •
downstreamfromnozzle.
Installfan/bloweronupstreamendof •
ductbox.
Installagrilleondownstreamendof •
ductbox.
InTrueIAQinstallersetup,setISU#25to3.
Ifairprovingswitchisused,set•
TrueSTEAMDIP4downandDIP5up.
TrueSTEAM Wired to a Humidistat in a Zoned Application
Ifairprovingswitchisused,set
TrueSTEAMDIP4downandDIP5up.
Connectthethermostats,dampers,
transformers,andsensorwiresasshown
intheTruezoneHZ432panelinstructions.
InTrueIAQinstallersetup,setISU#25
to3.
Tr ueIAQ
Tr ueSTEAM
20V Tr ansformer
# AT 120
Gen Purpose
SPST Relay
#R8222
Fan/Blower
min 250 CFM
120 VAC
HUM
HUM
C
C
C
R
24V
24V
L1 L2120 VA C
R
C
Black
Red
GF
Optional Air
Proving Switch
M29637
1
TrueIAQ
TrueSTEAM
HZ432
Panel
HUM
HUM
C
C
G
C
R
24V
24V
R
R
G
W
Y
GF
GT
RH
W1/E
Y1
Optional Air
Proving Switch
3
1
2
M29638
D: Advanced Wiring