Thermostat System Settings - Aprilaire 8840 Safety & Installation Instructions

TABLE 2 – THERMOSTAT SYSTEM SETTINGS
System setting Description
NOTE: Equipment Type related settings will
Equipment Type
return to defaults if this is changed
Used to lockout heating or cooling
Control Setup
outputs (Heat/Cool mode only)
Heat Pump Auxiliary Selects auxiliary type (Heat Pump mode
Type only)
Selects thermostat or equipment to
Fan Control In Heating control the fan in heating (Heat/Cool
mode only)
Number of Select number of compressor stages
Compressor Stages (Heat Pump mode only)
Number of Auxiliary Select number of auxiliary heat stages
Heat Stages (Heat Pump mode only)
Number of Stages of Select number of heat stages (Heat/Cool
Heat mode only)
Number of Stages of Select number of cool stages (Heat/Cool
Cool mode only)
Select if the remote sensor is attached,
Remote Temperature
and uses backup, or is averaged with
Sensor Installed?
built-in
Return Air Temperature Select if return air temperature sensor is
Sensor Installed? attached or not
Outdoor Temperature Select if outdoor sensor is attached or
Sensor Installed? not
Select if support module values are
Display Support
displayed on Monitored Climate screen
Modules
under Status
Number of Controlling Select number of sensors configured to
Support Modules Temp be controlling temperature
Number of Controlling Select number of sensors configured to
Support Modules RH be controlling RH
Enables or disables programmable
Schedule
schedule
Progressive Recovery Enables or disables progressive recovery
Away allows the user to set the
thermostat to a predefined setpoint using
Display Away Button? a single button press. The predefined
setpoints can be selected in the User
Settings
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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
TABLE 2 – THERMOSTAT SYSTEM SETTINGS
System setting Description
Display Heat Blast Select if the Heat Blast button is
Button? displayed
Amount of heating when Heat Blast is
Blast Offset
initiated
Extends fan operation after heat call
Extended Fan – Heat
ends
Extended Fan – Cool Extends fan operation after cool call ends
Auto Changeover Enable or disable Auto Changeover mode
DeadBand Auto Changeover mode deadband
Minimum time between heating and
Auto Changeover Time
cooling calls
Internal Temperature Field adjustment of controlling
Sensor Offset temperature sensors
Internal RH% Sensor
Field adjustment of internal RH sensor
Offset
Equipment Minimum
Minimum on time for heating and cooling
On Time
Heating Minimum Off
Minimum off time for heating
Time
Compressor Minimum Minimum off time for compressor
Off Time protection
Outdoor Temperature Enable or disable high balance point
High Balance Point (Available if ODT is installed)
If outside temperature is above the high
Select High
balance point the aux heat operation is
Temperature Balance
not allowed (Available if high balance
Point
point is enabled)
Outdoor Temperature Enable or disable low balance point
Low Balance Point (Available if ODT is installed)
If outside temperature is below the low
Select Low
balance point the compressor operation
Temperature Balance
is not allowed (Available if low balance
Point
point is enabled)
Accumulation of equipment run time in
Stage Rate
staging determination
1 = more rapid staging of equipment
(comfort),
Factor
5 = slower staging of equipment
(economy)
First Stage Differential First stage differential
Factory default setting
(bold) and setting range
No
Yes
3°F (1.5°C)
4°F (2°C)
5°F (25°C)
Disabled
Enabled
Disabled
Enabled
Disabled
Enabled
3°F (1.5°C)
2 to 9°F (1 to 45°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 (05 to 45°C)
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