Indoor Air Quality System Settings Tables; Air Cleaning System Settings Table - Aprilaire 8820 Safety & Installation Instructions

SETUP & TESTING
HVAC INSTALLER SYSTEM SETTINGS TABLE
System setting Description
22 . First Stage Differential First stage differential .
23 . Second Stage Differential Second stage differential .
24 . Third Stage Differential Third stage differential .
25 . Fourth Stage Differential Fourth stage differential .
26 . Away Enables the Away feature . The Away feature
allows the automation system or Aprilaire mobile
and web apps to use a single button press to set
the thermostat to a predefined setpoint(s) . The
thermostat will hold the setpoint(s) until Away is
canceled with the automation system or app or at
the thermostat .
27 . Heat Blast Enables the Heat Blast feature .
28 . Blast Offset Amount of heating when Heat Blast is initiated .
37 . Stage Rate Accumulation of equipment run time in equipment
staging determination .
1 = more rapid staging of equipment (comfort) .
5 = slower staging of equipment (economy) .
38 . Progressive Recovery Enable or disable progressive recovery .
39 . Low Balance Point Outdoor temperature low balance point .
Note: This option is only available if the thermostat
is set to Heat Pump and Outdoor Sensor is set to
Installed or Automation .
40 . High Balance Point Outdoor temperature high balance point .
Note: This option is only available if the thermostat
is set to Heat Pump and Outdoor Sensor is set to
Installed or Automation .
41 . Program Format Enables the 7-day program .
42 . Reset Service Reminders Clears the Air Filter, Dehumidifier, Fresh Air, and
HVAC service reminders if they are active and
resets the start date to the current date . Clears the
Change Water Panel reminder if it is active . If the
reminder is set to Timed, the clock will be reset .
43 . HVAC Service Reminder The period for displaying the "HVAC Service
Reminder" message .
44 . Constant Backlight Enable constant, low intensity backlight .
45 . Backlight Intensity Set the active backlight intensity .
Note: The minimum setting is 40% when Constant
Backlight is enabled .
51 . Support Module Sets the number of controlling support module
Controlling Temp Sensors temperature sensors .
52 . Support Module Sets the number of controlling support module
Controlling RH Sensors humidity sensors .
53 . Display Monitor Support Selects if the temperature or humidity values
Module Sensor from support modules that are configured for
monitoring are displayed in the message center of
the thermostat .
10
(CONTINUED)
Factory default setting (bold)
and setting range
1°F (0.5°C)
1°F to 9°F (0 .5°C to 4 .5°C)
1°F (0.5°C)
1°F to 9°F (0 .5°C to 4 .5°C)
1°F (0.5°C)
1°F to 9°F (0 .5°C to 4 .5°C)
1°F (0.5°C)
1°F to 9°F (0 .5°C to 4 .5°C)
Disable
Enable
Disable
Enable
3°F (1.5°C)
3°F to 5°F (1 .5°C to 2 .5°C)
2
1 to 5 or "OFF" to ignore accumulated
run time .
Disable
Enable
20°F or -8°C
0°F to 60°F (-18°C to 12°C) or OFF to
ignore LBP
65°F or 14.5°C
0°F to 80°F (-18°C to 22°C) or OFF to
ignore HBP
7-Day
Non-Prog
No
Yes
Off
1 to 12 months or "Off" to disable
Disable
Enable
100 Percent
0 to 100 Percent
NONE
1 to 8
NONE
1 to 4
No
Yes
SETUP & TESTING

INDOOR AIR QUALITY SYSTEM SETTINGS TABLES

The following tables contain the Indoor Air Quality system settings and their details . Default settings are shown in
bold . Some settings are only present dependent upon the value of other settings .
The use of the included outdoor temperature sensor (recommended) enables additional Indoor Air Quality functionality .
If the outdoor temperature sensor was not enabled in the thermostat system settings, thermostat system setting 15,
outdoor sensor, will be presented prior to entering the Indoor Air Quality system settings .
Please refer to the Model 8820 Owner's Manual for further information about thermostat features .

Air Cleaning System Settings Table

System setting Description
Air Cleaner Installed Selects if an air cleaner is installed . (If set to no, no other
air cleaning settings will be available .)
Change Air Filter Reminder The period for displaying the "Change Air Filter" message .
Factory default setting (bold)
and setting range
No
Yes
Off
1 to 12 months or "Off" to disable
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