Thermostat System Settings Table - Aprilaire 8840 Safety & Installation Instructions

SETUP & TESTING
HVAC INSTALLER SYSTEM SETTINGS TABLES

Thermostat System Settings Table

System setting Description
Equipment Type Note: Equipment Type related settings will return to
defaults if this is changed .
Control Setup Used to lockout heating or cooling outputs . (Heat/Cool
mode only .)
Heat Pump Auxiliary Type Selects auxiliary type . (Heat Pump mode only .)
Fan Control In Heating Selects thermostat or equipment to control the fan in
heating . (Heat/Cool mode only .)
Number of Compressor Stages Select number of compressor stages . (Heat Pump mode
only .)
Number of Auxiliary Heat Stages Select number of auxiliary heat stages . (Heat Pump
mode only .)
Number of Stages of Heat Select number of heat stages . (Heat/Cool mode only .)
Number of Stages of Cool Select number of cool stages . (Heat/Cool mode only .)
Remote Temperature Sensor Select if the remote sensor is attached, and uses backup,
Installed? or is averaged with built-in .
Return Air Temperature Sensor Select if return air temperature sensor is attached or not .
Installed?
Outdoor Temperature Sensor Select if outdoor sensor is attached or not .
Installed?
Display Support Modules Select if support module values are displayed on
Monitored Climate screen under Status .
Number of Controlling Support Select number of sensors configured to be controlling
Modules Temp temperature .
Number of Controlling Support Select number of sensors configured to be controlling
Modules RH RH .
Schedule Enables or disables programmable schedule .
Progressive Recovery Enables or disables progressive recovery .
Display Away Button? Away allows the user to set the thermostat to a
predefined setpoint using a single button press .
The predefined setpoints can be selected in the User
Settings .
Display Heat Blast Button? Select if the Heat Blast button is displayed .
Blast Offset Amount of heating when Heat Blast is initiated .
12
(CONTINUED)
Factory default setting
(bold) and setting range
Heat/Cool
Heat Pump
Heat & Cool
Heat Only
Cool Only
Gas/Oil Heat
Electric Heat
Gas/Oil Heat
Electric Heat
One
Two
One
Two
One
Two
Three
One
Two
Three
No
Yes
Yes (fallback built-in)
Yes (average w/built-in)
No
Yes
No
Yes
Automation
No
Yes
0-8
0-4
Enabled
Disabled
Enabled
Disabled
No
Yes
No
Yes
3°F (1.5°C)
4°F (2°C)
5°F (2 .5°C)
SETUP & TESTING
HVAC INSTALLER SYSTEM SETTINGS TABLES
Thermostat System Settings Table (continued)
System setting Description
Extended Fan – Heat Extends fan operation after heat call ends .
Extended Fan – Cool Extends fan operation after cool call ends .
Auto Changeover Enable or disable Auto Changeover mode .
DeadBand Auto Changeover mode deadband .
Auto Changeover Time Minimum time between heating and cooling calls .
Internal Temperature Sensor Field adjustment of controlling temperature sensors .
Offset
Internal RH% Sensor Offset Field adjustment of internal RH sensor .
Equipment Minimum On Time Minimum on time for heating and cooling .
Heating Minimum Off Time Minimum off time for heating .
Compressor Minimum Off Time Minimum off time for compressor protection .
Outdoor Temperature High Enable or disable high balance point (Available if ODT
Balance Point is installed .)
Select High Temperature Balance If outside temperature is above the high balance point
Point the aux heat operation is not allowed . (Available if high
balance point is enabled .)
Outdoor Temperature Low Enable or disable low balance point (Available if ODT is
Balance Point installed .)
Select Low Temperature Balance If outside temperature is below the low balance point
Point the compressor operation is not allowed . (Available if
low balance point is enabled .)
Stage Rate Accumulation of equipment run time in staging
determination .
Factor 1 = more rapid staging of equipment (comfort),
5 = slower staging of equipment (economy) .
First Stage Differential First stage differential .
Second Stage Differential Second stage differential .
Third Stage Differential Third stage differential .
Fourth Stage Differential Fourth stage differential .
Service HVAC Reminder The period for displaying the "HVAC Service reminder"
message .
Number of Months for Recurrence Select number of months for displaying reminder .
(CONTINUED)
Factory default setting
(bold) and setting range
Disabled
Enabled
Disabled
Enabled
Disabled
Enabled
3°F (1.5°C)
2 to 9°F (1 to 4 .5°C)
4 Minutes
1 to 5 Minutes
0°F (0°C)
-4 to 4°F (-2 to +2°C)
0
-5 to 5
2 Minutes
1 to 5 Minutes
2 Minutes
1 to 5 Minutes
5 Minutes
1 to 5 Minutes
Enabled
Disabled
65°F (14.5°C)
0 to 80°F (-18 to 22°C)
Enabled
Disabled
20°F (-8°C)
0 to 60°F (-18 to 12°C)
Enabled
Disabled
2
1 to 5
1°F (0.5°C)
1 to 9°F (0 .5 to 4 .5°C)
1°F (0.5°C)
1 to 9°F (0 .5 to 4 .5°C)
1°F (0.5°C)
1 to 9°F (0 .5 to 4 .5°C)
1°F (0.5°C)
1 to 9°F (0 .5 to 4 .5°C)
Disabled
Enabled
12 Months
1 to 12 Months
13