Aprilaire 1830, 1850 Wiring To The Hvac System, Optional W & Y Wiring, Wiring To Zone Dampers

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-UPon page 17 for additional set up steps required to access this feature..

WIRING TO ZONE DAMPERS

FIGURE 23 – Two Zone Wiring On-Board Control

FIGURE 22 – Wiring to HVAC System

+- A B ODT VENT DEH Remote Sensor Dampers

DHDH	Gh Rf Cf HVAC
FLOAT Switch	Gs W EQUIP.
	Y

	EXISTING WIRE				OPTIONAL
	NEW WIRE
					WIRES
			HVAC
		EQUIPMENT
THERMOSTAT
				G
	R			R

CC

G

WW

YY

90-1859

+- A B ODT VENT DEH Remote Sensor Dampers

Switch

FLOAT DH DH

Gh Rf Cf Gs W Y HVAC EQUIP.

(40 VA min)

24 VAC

(PRIMARY ZONE)	(SECONDARY ZONE)
NORMALLY CLOSED	NORMALLY OPEN

90-1896

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