Ventilation System Settings Table; Removal Of Indoor Air Quality Control Buttons; System Test Menu - Aprilaire 8620 Safety & Installation Instructions

SETUP & TESTING

Ventilation System Settings Table

Note: Ventilation can only be installed if humidification is not installed and dehumidifier control is not set to whole home .
System setting Description
Fresh Air Vent Installed Selects if ventilation is installed . (If set to No, no other
ventilation settings will be available .)
Fresh Air Setup Type Selects if ventilation is configured through the Code setup
or Comfort . Comfort setup has more lockout options . Code
setting ensures missed lockout time is made up .
Number of Bedrooms Selects the number of bedrooms to be used for the Calculated
Minutes per Hour .
Home Size Selects the size of the home to be used for the Calculated
Minutes per Hour .
Measured CFM Selects the ventilation CFM to be used for the Calculated
Minutes per Hour .
Calculated Minutes Displays the Fresh Air Time calculated .
per Hour
Override Manual adjustment of Calculated Minutes per Hour .
Enable High Vent RH Selects if ventilation is disabled if the indoor RH exceeds the
Limit indoor RH limit . (Only available if Fresh Air Setup is set to
Comfort .)
High Vent RH Limit Sets the ventilation indoor RH lockout limit . (Only available if
Enable High Vent RH Limit is set to Yes .)
Enable Low Vent RH Selects if ventilation is disabled if the indoor RH exceeds the
Limit indoor RH limit . (Only available if Fresh Air Setup is set to
Comfort .)
Low Vent RH Limit Sets the ventilation indoor RH lockout limit . (Only available if
Enable Low Vent RH Limit is set to Yes .)
Enable High Vent Enables high ventilation temperature lockout limit . (Only
Temperature Limit available if Outdoor Sensor is set to Installed .)
High Vent Temperature Sets high ventilation temperature lockout limit . (Only available
Limit if Enable High Vent Temperature Limit is set to Yes .)
Enable Low Vent Enables low ventilation temperature lockout limit . (Only
Temperature Limit available if Outdoor Sensor is set to Installed .)
Low Vent Temperature Sets low ventilation temperature lockout limit . (Only available
Limit if Enable Low Vent Temperature Limit is set to Yes .)
HVAC Fan with Vent Selects if ventilation forces the fan on . (Yes with high and low
limits is only available if Outdoor Sensor is set to Installed .)
Enable High Mixing Enables high mixing temperature . (Only available is HVAC Fan
Temperature with Vent is set to Yes with high and low limits .)
High Mixing Sets the high mixing temperature . (Only available if Enable
Temperature High Mixing Temperature is set to Yes .)
Enable Low Mixing Enables low mixing temperature . (Only available is HVAC Fan
Temperature with Vent is set to Yes with high and low limits .)
Low Mixing Sets the Low mixing temperature . (Only available if Enable
Temperature Low Mixing Temperature is set to Yes .)
Note: Refer to manuals for humidifier, dehumidifier, air cleaner and ventilation products for recommended installation
and operation .
12 English
Factory default setting (bold)
and setting range
No
Yes
Comfort
Code
3 Bedrooms
1 to 10 Bedrooms
2500 SQ FT
500 to 7500 SQ FT
110 CFM
30 to 250 CFM
None
Range 6 to 60 Minutes
(Calculated Minutes per Hour)
Range 6 to 60 Minutes
Yes
No
55%
45% to 70%
No
Yes
20%
10% to 30%
No
Yes
100°F (38°C)
85°F to 105°F (29°C to 41°C)
No
Yes
10°F (-12°C)
-10°F to 40°F (-24°C to 6°C)
Yes
Yes with high and low limits
No
No
Yes
80°F or (26°C)
60°F to 105°F (14°C to 41°C)
No
Yes
40°F (6°C)
0°F to 50°F (-18°C to 12°C)
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
(see pages 10-12) .
Step 2: From the home screen (see
page 17), press and hold the
Indoor Air Quality button you
wish to remove 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 .
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 .
TEMPERATURE
INDOOR
AIR QUALITY
CONTROL
BUTTONS
SYSTEM TEST STEPS
Heating equipment test
Cooling equipment test
Fan equipment test
Humidification equipment test
Dehumidification equipment test
Ventilation equipment test
HUMIDITY
OUTDOOR
TEMPERATURE
EQUIPMENT
CONFIGURATION
English 13