Installer’s Guide
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WARNING
THIS INFORMATION IS FOR USE BY INDIVIDUALS HAV-
ING ADEQUATE BACKGROUNDS OF ELECTRICAL AND
MECHANI CAL EXPERIENCE. ANY ATTEMPT TO REPAIR A
CENTRAL AIR CONDITIONING PRODUCT MAY RESULT IN
PERSONAL INJURY AND/OR PROPERTY DAMAGE. THE
MANUFACTURER OR SELLER CANNOT BE RESPONSI-
BLE FOR THE INTERPRETATION OF THIS INFORMATION,
NOR CAN IT ASSUME ANY LIABILITY IN CONNECTION
WITH ITS USE.
For Installing Humidifiers with Communicating Systems
Air Handlers & Furnaces
18-HE87D1-4A-EN
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT —
This Document is customer property and is to remain with this unit. Please return to service information pack
upon completion of work.
HAZARDOUS VOLTAGE! DISCONNECT ALL ELECTRIC
POWER, INCLUDING REMOTE DISCONNECTS BEFORE
SERVICING. FOLLOW PROPER LOCKOUT/TAGOUT
PROCEDURES TO ENSURE THE POWER CAN NOT BE
INADVERTENTLY ENERGIZED. FAILURE TO DISCONNECT
POWER BEFORE SERVICING COULD RESULT IN DEATH
OR SERIOUS INJURY.
EHUMD500A HUMIDIFIER INSTALLATION WITH COMMUNICATING
SYSTEM AIR HANDLER
Diagram A
AS NEEDED FOR EHUMD500 WITH COMMUNICATING AIR HANDLER
(Included humidity control and outdoor sensor not required)
Circuit Board Inside Communicating Air Handler
HUMIDIFIER CORD
FAN POWERED
HUMIDIFIER
PLUGGED INTO
120 VAC POWER SOURCE
18 AWG 2-Conductor Wire
Notes:
Enable HUM Control through the * CONT950 Installer
Setup Menu:
(ISU0372 Option 1 - RH Setpoint
Option 2 - Dewpoint Control)
See advanced features in *CONT950 Installer’s Guide
for operating details.
1/4 Inch Female
Quick Connects
Note: Insulated
terminals are
recommended
Wire Nuts
FAN POWERED HUMIDIFIER WIRING DIAGRAM
EAC
HUM
(BR)
(BR)
Field Supplied
120VAC
TRANSFORMER
(Furnished)
24VAC
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WARNING
HAZARDOUS VOLTAGE - DISCONNECT POWER BEFORE SERVICING
WARNING:
