Fiber Board Duct Mount; Digital Humidifier Control 24V Terminals - Aprilaire Premium Digital Humidifier Control Safety And Installation Instructions Manual

Figure D – Fiber Board Duct Mount
CONTROL BOARD
COVER
KNOB
BASE PLATE
RETURN DUCT
RETURN SHEET METAL
DUCT
PLATE
GASKET
SCREW (x2)
INSIDE OF
RETURN
DUCT
SHEET METAL PLATE
CUT OPENING IN
RETURN DUCT
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Figure E – Digital Humidifier Control 24V Terminals
R C A B
OUTDOOR
TEMPERATURE
SENSOR OR
MANUAL MODE
RESISTOR
FOR
COMMUNICATION
WITH APRILAIRE
8570 THERMOSTAT
CONTINUOUS 24V
POWER FOR CONTROL
ODT W/G Cf H
24V BLOWER
OPERATION SIGNAL
FROM HVAC
EQUIPMENT
24V SIGNAL TO
HUMIDIFIER
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