Aprilaire 800 Series - Manual Digital Humidistat and Fan Pack Wiring

INSTALLATION INSTRUCTIONS (CONTINUED)
MANUAL DIGITAL HUMIDISTAT AND FAN PACK WIRING (MODEL 865)
Mount the Digital Manual Humidistat in the area to be humidified according to installation instructions included with control. Install the
humidistat in the same room or area as the Fan Pack discharge, but at least ten feet away. Wire the Digital Manual Humidistat to the Steam
Humidifier using standard 24 volt thermostat wire. See Figure 18.
Disconnect all power to Steam Humidifier before wiring the Fan Pack terminals to the FAN PACK terminals on the Steam Humidifier. Use
standard 24 volt thermostat wire. See Figure 18.
FIGURE 18 – Wiring Diagram for Manual Humidistat and Fan Pack
90-1662
FAN PACK HUMIDISTAT
H
H
R
C
24VAC
24VAC
P4
YELLOW
BLUE
Model 65 Digital Control
T
ap Connectors
Circuit Board
Transformer
Steam Humidifier Fan Pack
Aprilaire Steam Humidifier
WIRE – 18 Awg acceptable for 24 VAC application.
%
*
OFFON
SET
21