Wiring The Dehumidifier To The Hvac System And Zone Dampers - Aprilaire 1830 Installation Instructions Manual

WIRING THE DEHUMIDIfIER TO THE HVAC SySTEM AND ZONE DAMPERS

NOTE: Use 18-22 AWG wire for wiring to HVAC system and zone
dampers .
Pull off the wiring access cover near the dehumidifier control to
access the wiring terminals . Snap the wiring access cover back into
place after completing all wiring .
WIRING TO THE HVAC SySTEM
When the dehumidifier is ducted to the HVAC system, it is
recommended that it also be wired to the HVAC system as shown
in figure 22 . If ducted to the HVAC system in return to return
configuration, the dehumidifier must be wired to the HVAC system
to prevent short circuiting dehumidified air directly back to the
dehumidifier inlet . In return to supply ducting configuration, running
the HVAC fan with the dehumidifier ensures the warm dry air is mixed
with room air before being discharged to the home .
OPTIONAl W & y WIRING
Wire the W and/or Y terminal to the HVAC system when using the
ventilation feature of the dehumidifier (see VENTILATION on page 19) .
Wire the dehumidifier Y terminal to the HVAC system if it is desired
to disable the dehumidifier compressor from operating when the air
conditioning is running . See DEH w/AC in SySTEM SET-UP on
page 17 for additional set up steps required to access this feature .
WIRING TO ZONE DAMPERS
fIGURE 23 – Two Zone Wiring On-board Control
14
+ - A B ODT VENT DEH
Remote Sensor Dampers
(40 VA min)
24 VAC
fIGURE 22 – Wiring to HVAC System
+ - A B
Remote
EXISTING WIRE
NEW WIRE
HVAC
EQUIPMENT
THERMOSTAT
G
R R
C C
G
W W
Y Y
(PRIMARY ZONE)
NORMALLY CLOSED
ODT VENT DEH
Sensor Dampers
OPTIONAL
WIRES
(SECONDARY ZONE)
NORMALLY OPEN
90-1859
90-1896