Aprilaire 8620 Ventilation System Settings Table continued, page 17, press and hold the

Setup & Testing

Ventilation System Settings Table (continued)

		Factory default setting (bold)
System setting	Description	and setting range
Number of Bedrooms	Selects the number of bedrooms to be used for the ASHRAE	3 Bedrooms
	calculation.. (Only available if fresh air setup is set to ASHRAE..)	1 to 6 Bedrooms
Number of Occupants	Selects the number of occupants to be used for the ASHRAE	4 Occupants
	calculation.. (Only available if fresh air setup is set to ASHRAE..)	1 to 10 Occupants
Home Size	Selects the home size to be used for the ASHRAE calculation..	2500 SQ FT
	(Only available if fresh air setup is set to ASHRAE..)	1000 to 5000 SQ FT
Fresh Air CFM	Selects the ventilation CFM to be used for the ASHRAE	60 CFM
	calculation.. (Only available if fresh air setup is set to ASHRAE..)	30 to 200 CFM
Select Climate	Selects the climate to be used for the ASHRAE calculation..	Normal
	(Only available if fresh air setup is set to ASHRAE..) To	Very Hot/Humid
	determine what region you are in, refer to the map below.	Very Cold
ASHRAE Cycle Time	Displays the Fresh Air Time calculated by the ASHRAE	Minutes/Hour
	standard.. (Only displayed if fresh air setup is set to ASHRAE..)

Note: In ASHRAE set-up temperature and humidity limits are disabled..

Note: Refer to manuals for humidifier, dehumidifier, air cleaner and ventilation products for recommended installation and operation..

CLIMATE MAP FOR ASHRAE FRESH AIR SETUP

Setup & Testing

Removal of Indoor Air Quality Control Buttons

If any of the Indoor Air Quality control features are not installed, the corresponding button can be removed using the following procedure:

Step 1: Verify the specific Indoor Air
Quality control feature is not
installed in the installer set-up	Indoor
(see pages 10-12)..
	Air Quality
Step 2: From the home screen (see	CONTROL
	Buttons
page 17), press and hold the
IAQ button for 7 seconds..
Step 3: The message center will
display REMOVE BUTTON and
the options of NO and YES
(NO will be flashing).

Step 4: Press or to select YES..

Step 5: Press [DONE]..

Step 6: The button is now removed..

Note: Once the button is removed it can be brought back by installing the corresponding Indoor Air Quality feature (see pages 10-12)..

System test menu

The system test menu is used to test a system after installation.. The outputs of the thermostat can be manually activated to test their function.. The instructions below show how to enter the test mode and turn outputs on and off..

VERY COLD

How to enter the system test menu:

Press [MODE] to set system to off..

Press and hold [FAN] and [MODE] for three seconds to enter system test mode..

The first screen of the installer test displays the equipment configuration..

Press [NEXT] to enter the first installation test or [CANCEL] to exit.

SYSTEM TEST STEPS

Heating equipment test

Cooling equipment test

Fan equipment test

Humidification equipment test Dehumidification equipment test Ventilation equipment test

VERY HOT/HUMID

Temperature

Humidity

Outdoor

Temperature

Equipment

Configuration

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