Aprilaire 8620 Setup & Testing, Indoor Air Quality Equipment Wiring Diagrams, Dehumidifier Wiring

Installation

INDOOR AIR QUALITY EQUIPMENT WIRING DIAGRAMS

DEHUMIDIFIER WIRING	HUMIDIFIER WIRING
DEHUMIDIFIER		TRANSFORMER
	HUMIDIFIER

Setup & Testing

EQUIPMENT TYPE SELECTION SWITCH (SW1)

This thermostat has the option of being used in heat pump or heat/cool systems.. Switch SW1 located on the back of the thermostat’s face is used to select this option. This setting is displayed in the Installer System Settings under Equipment Type..

Note: Thermostat reboots within 10 seconds after switch position is changed..

HC	SW1
	HEAT/COOL
HP
	HEAT PUMP
	HC
	HP

Installer setup menu

How to enter the installer setup menu AND SELECT EQUIPMENT TO SETUP:

In the Installer Setup, HVAC or Indoor Air Quality setup can be selected. If Indoor Air Quality setup is selected, the user can then select to set up Air Cleaning, Humidification, Dehumidification or Ventilation.

I2 C I1 O/B Y Y2 G RC R W2 W L S2 S1 T1 T2 I2 C I1 O/B Y Y2 G RC R W2 W L S2 S1 T1 T2

VENTILATION WIRING

TRANSFORMER

DAMPERCLOSED

NORMALLY

I2 C I1 O/B Y Y2 G RC R W2 W L S2 S1 T1 T2

Note: The I1/I2 output is a dry contact closure.. The humidifier wiring diagram assumes the control is powering a solenoid valve.. The dehumidifier wiring diagram is for a normally open dry contact input.. The ventilation diagram assumes the control is for a normally closed damper. Please see the individual humidifier, dehumidifier or ventilation installation instructions for product specific wiring details..

Press [MODE] to set system to OFF.

Press [MENU] to enter main menu..

Press and hold [SETUP] for seven seconds, [INSTALL SETUP] appears..

Press [INSTALL SETUP] to enter installer setup menu..

Change System Settings

SETTINGSETTING

DESCRIPTION NUMBER

SETTING

OPTIONS

Press or to adjust the option.

Press [MENU] to exit.

Press [NEXT] to select option..

If IAQ (Indoor Air Quality) was selected, Press or to adjust the Outdoor Sensor setting or IAQ (Indoor

Air Quality) option..

Press [NEXT] to select Outdoor Sensor setting or IAQ (Indoor Air Quality) option..

System Settings can now be changed..

Press [NEXT] or [BACK] to page through the settings..

Press or to adjust the setting.

Press [DONE] to save and exit, or [CANCEL] to exit without saving..

The thermostat will discard changes and exit if nothing is pressed within 60 seconds..

To reset the installer settings to the default, reset the thermostat by pressing the [RESET] button for 5 seconds..

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