Replacement Parts - Aprilaire 1150 Installation, Operation And Maintenance Manual

REPlACEMENT PARTS

Note: See page 45 for a listing of replacement part numbers .
fIgURE 33 – Display Panel
Ribbon Connection
Internal controller board detail
Connector tab
position
Connect to pins
1 through 9
LED indicator
fIgURE 34 – Display Panel
Connector Polarity
Connector tab on ribbon cable
Programming port
factory use only
Internal
controller
board
Display panel
ribbon cable
connector
Programming
port for
factory
use only
Microchip
OM-2030
OM-2031
fIgURE 35 – Internal Controller board
Slide switches 1 and 2
positions 1 through 16
LED indicating
power is on
Four mounting
holes 5/32" dia .
Water detect bottom probe input
Water detect middle probe input
Water detect top probe input
Off/on enable input
+VDC input demand signal
VDC input demand common
24 VDC supply
24 VAC common
24 VAC hot
24 VAC contactor/relay output
24 VAC fill valve output
24 VAC drain valve output
Remote alarm or
fan/blower start
Note:
Terminal blocks J1 and J4 are removable for easier wiring .
Input for display
panel ribbon cable;
see figures 33 and 34
Programming
port for factory
use only
6"
(152 mm)
3"
(76 mm)
OM-2029
43