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Diagram A1
FAN POWERED HUMIDIFIER WIRING DIAGRAM
AS NEEDED FOR EHUMD500 WITH NON-COMMUNICATING AIR HANDLER
Note:
Verify that switch "A" is
in the BYPASS Position
TRANSFORMER
(Furnished)
120VAC
24VAC
18 AWG 2-Conductor Wire
FAN POWERED
HUMIDIFIER
HUMIDIFIER CORD
PLUGGED INTO
120 VAC POWER SOURCE
Diagram B
FAN POWERED HUMIDIFIER WIRING DIAGRAM
4x4 Line Voltage Junction Box in
3-Stage Communicating Furnace
FAN POWERED
HUMIDIFIER
HUMIDIFIER CORD
PLUGGED INTO
120 VAC POWER SOURCE
SWITCH "A"
Circuit Board Inside Non-Communicating Air Handler
R
C
H
ODT
24V
Wire Nuts
(BR)
(BR)
FOR EHUMD500 WITH 120VAC OUTPUT TERMINALS
HUM (BK)
HUM (WH)
Furnace
18 AWG 2-Conductor Wire
Wire Nuts
(BR)
(BR)
EAC
HUM
1/4 inch Female Quick Connects
Note: Insulated Terminals are recommended
Field Supplied
TRANSFORMER
(Furnished)
120VAC
24VAC
Wire Nuts
Blower Compartment
Notes:
Enable HUM Control through the * CONT900 Installer
Setup Menu:
(ISU0372
Option 1 - RH Setpoint
Option 2 - Dewpoint Control)
See advanced features in *CONT900 Installer's Guide
for operating details.
Field Supplied
90-1928
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