APRILAIRE 8910 Touch Screen Thermostat with Integrated Indoor Air Quality Solutions Instructions

Model 8910 Touch Screen
Thermostat with Integrated
Indoor Air Quality Solutions Safety & Installation Instructions
READ AND SAVE THESE INSTRUCTIONS

INSTALLATION

THERMOSTAT INSTALLATION LOCATION RECOMMENDATIONS

Thermostat should be mounted:

• On an interior wall, in a frequently occupied space.
• Approximately 5‘ above floor.
• At least 18” from outside wall.
• Thermostat can be mounted to a vertical junction box.

Do not mount thermostat:

• Behind doors, in corners or other dead air spaces.
• In direct sunlight, near lighting fixtures, or other appliances that give off heat.
• On an outside or unconditioned area wall.
• In the flow of a supply register, in stairwells, or near outside doors.
• On a wall with concealed pipes or ductwork.

THERMOSTAT MOUNTING

1. Remove the rear mounting plate from the thermostat.
2. Pull wires through the opening on the back of the thermostat.
3. Position and level the mounting plate of the thermostat on wall and mark the hole locations with a pencil.
4. Drill 1/4” holes and insert supplied anchors (drywall only).
5. Place mounting plate over anchors, insert and tighten screws.
6. Seal wire entry holes to prevent drafts affecting temperature readings.

EQUIPMENT CONTROL MODULE INSTALLATION LOCATION RECOMMENDATIONS

Note: Installer must touch a grounded metal object before handling the Equipment Control Module to avoid potential loss of programs due to electrical discharge.
Equipment control module should be mounted:

• In a location where the temperature will not exceed 158°F (70°C) or drop below 32°F (0°C).

Do not mount equipment control module:

• On foundation walls or on the HVAC equipment or ductwork . These locations can cause moisture to condense on the equipment control module.

EQUIPMENT CONTROL MODULE MOUNTING
The Equipment Control Module has the following features to simplify mounting and wiring and provide for a clean and neat installation.

• Six (6) mounting holes. One on each corner and two centered top and bottom . Any combination of these holes may be utilized . Mount the Equipment Control Module using 2 to 4 #8 screws appropriate for the mounting surface substrate . (See Figure 2 .)
• Wires can be routed through the top, bottom, sides or back.
• Nylon wire ties can be used to secure wires in 10 places.

Installation Steps

1. Select mounting location .
2. Pull from bottom to remove front cover . (See Figure 1 .)
3. Mount base using 2 to 4 #8 screws (field supplied) .

THERMOSTAT WIRING
Wire specifications:
18-24 gauge thermostat wire

Installation notes:

• Ensure power at the HVAC equipment is off.
• Loosen screw terminals, insert stripped wire and re-tighten.
• Push the excess wire back into the opening and plug the wall opening to prevent drafts.

1. – Connection to terminal 1 at equipment control module
2. – Connection to terminal 2 at equipment control module
3. – Connection to terminal 3 at equipment control module
   T1 & T2 – Remote temperature sensor (optional)

REMOTE TEMPERATURE SENSOR (OPTIONAL)
A remote temperature sensor can be used if the thermostat is to be mounted in a concealed location. A 8051 flush mount or 8053 surface mount remote temperature sensor can be attached to the T1 and T2 terminals and mounted in a recommended area. The remote sensor must be enabled in the installer set-up menu, and once enabled will override the thermostat’s internal temperature sensor.

Remote temperature sensor should be mounted:

• On an interior wall, in a frequently occupied space.
• Approximately 5‘ above floor.
• At least 18” from outside wall.
• Using less than 300’ of wire.

Do not mount remote sensor:

• Behind doors, in corners or other dead air spaces.
• In direct sunlight, near lighting fixtures, or other appliances that give off heat.
• On an outside or unconditioned area wall.
• In the flow of a supply register, in stairwells, or near outside doors.
• On a wall with concealed pipes or ductwork.
• Near 120 VAC lines.

EQUIPMENT CONTROL MODULE WIRING

Wire specifications:
18-24 gauge thermostat wire
Installation notes:

• Ensure power at the HVAC equipment is off.
• Loosen screw terminals, insert stripped wire and re-tighten.
• Use zip tie to route wiring through the wiring channels.

1. – Connection to terminal 1 at thermostat
2. – Connection to terminal 2 at thermostat
3. – Connection to terminal 3 at thermostat

RAT – Return air temperature sensor (optional)
LAT – Leaving air temperature sensor (optional)
ODT – Outdoor temperature sensor (optional)

C – 24VAC common
R – 24VAC
RC – 24VAC Cooling
RH – 24VAC Heating
W – First stage heat (conventional)/auxiliary (heat pump)
W2 – Second stage heat (conventional)/ auxiliary (heat pump)
W3/B – Third stage heat (conventional)/reversing valve (heat pump)
Y – First stage cooling (conventional)/first stage compressor (heat pump)
Y2 – Second stage cooling (conventional)/second stage compressor (heat pump) .
Y3/0 – Third stage cooling (conventional)/reversing valve (heat pump)
G – Fan
L – System fault indicator (heat pump only) (optional)
CEQ – 24VAC common from heat pump for system fault indicator (optional)
HUM – Humidifier
DHno & DHcom – Normally open dehumidifier control
DHnc & DHcom – Normally closed dehumidifier control
VENT – Ventilation
EAC – Electronic Air Cleaner

OUTDOOR TEMPERATURE SENSOR
Outdoor temperature can be measured by installing an 8052 sensor (included) to the ODT terminals and enabling the outdoor sensor in the installer set-up menu . When an outdoor sensor is installed, the features below will be enabled.
In heat pump mode the outdoor temperature sensor can be used to efficiently utilize an air source heat pump:

• When the outdoor temperature is less than the Low Balance Point, the heat pump will be locked out and only auxiliary heating will be used.
• When the outdoor temperature is higher than the High Balance Point, the auxiliary heating will be locked out and only the heat pump will be used to provide heating.

Indoor Air Quality functions can use the outdoor temperature sensor to:

• Control humidification setpoint based on outdoor temperature to prevent condensation
• Lock out humidification for temperatures over 60°F or below -30°F.
• Lock out ventilation based on high and/or low outdoor temperatures.
• Display outdoor temperature on thermostat.

Outdoor temperature sensor should be mounted:

• On side of building out of direct sunlight (north side recommended).
• Above snow line.
• At least 3’ away from exhaust vents and condensing lines.
• Using less than 300’ of wire.
• Do not route wires along 120 VAC lines.

OPTIONAL WIRELESS OUTDOOR TEMPERATURE AND HUMIDITY SENSOR
For installations where it is difficult to wire the included 8052 outdoor temperature sensor, a Model 8056 wireless outdoor sensor can be used. The Model 8056 module has two radio units, one that is placed on the equipment control module as shown below, and a second radio that is placed outside. See the Model 8056 Installation Instructions for detailed directions regarding installation.

RETURN AIR TEMPERATURE SENSOR (OPTIONAL)
Return air temperature can be measured by attaching an 8052 sensor to the RAT terminals. The return sensor must be enabled in the installer set-up menu. The return air temperature sensor provides protection in the event that the equipment control module loses connection with the thermostat. In the event that the thermostat connection is lost, the equipment control module will use the return air temperature sensor to maintain a temperature greater than 40°F and less than 100°F.

1. Locate the Aprilaire Model 8052 sensor in the return trunk.
2. Mount the sensor according to the installation instructions provided with the sensor.
3. Wire the sensor to the equipment control module RAT terminals.

LEAVING AIR TEMPERATURE SENSOR (OPTIONAL)
Leaving air temperature can be measured by attaching an 8052 sensor to the LAT terminals. The leaving air temperature sensor measurement is displayed during the installer test for diagnostic purposes.
IMPORTANT
Do not mount the sensor in direct line-of-sight of the heat exchanger, cooling coils, or UV lights as this may cause the sensor to report false temperature readings.

1. Locate the Aprilaire Model 8052 sensor in the supply trunk, after the heat exchanger and cooling coils. (See shaded areas in figure below .)
2. Mount the sensor according to the installation instructions provided with the sensor.
3. Wire the sensor to the equipment control module LAT terminals.

HVAC WIRING DIAGRAMS

CONVENTIONAL HEAT/COOL SINGLE TRANSFORMER (USE JUMPER)

CONVENTIONAL HEAT/COOL TWO TRANSFORMER (REMOVE JUMPER)

HEAT PUMP SINGLE TRANSFORMER (USE JUMPER WIRE)

HEAT PUMP TWO TRANSFORMER (REMOVE JUMPER WIRE)

INDOOR AIR QUALITY WIRING DIAGRAMS

INDOOR AIR QUALITY WIRING WITH SEPARATE TRANSFORMERS Note: Outputs are 24VAC dry contact . Please see individual product installation instructions for more details .

INDOOR AIR QUALITY WIRING WITH A SINGLE TRANSFORMER Note: Outputs are 24VAC dry contact . Please see individual product installation instructions for more details .

POWER & RESET OPTIONS

The equipment control module is powered from 24VAC. The thermostat is powered from the equipment interface module and has a battery back-up option for the clock.
The thermostat has a memory backup that saves the thermostat settings in case of a power interruption.
The system settings will be retained but the clock will reset after 90 seconds with no battery or equipment control module power.
The reset button located under the battery cover can be used to reset the thermostat to factory defaults. The system settings will also be reset to default.

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 14-16).
Step 2: From the home screen (see page 21), 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 14-16) .

EQUIPMENT TYPE SELECTION SWITCH (SW1)
This thermostat has the option of being used in heat pump or heat/cool systems. Switch SW1 located on the back of the thermostat’s face is used to select this option. This setting is displayed in the Installer System Settings under Equipment Type.
Note: Thermostat reboots within 10 seconds after switch position is changed.

INSTALLER SETUP MENU
HOW TO ENTER THE INSTALLER SETUP MENU AND SELECT EQUIPMENT TO SETUP:
In the Installer Setup, HVAC or Indoor Air Quality setup can be selected. If Indoor Air Quality setup is selected, the user can then select to set up Air Cleaning, Humidification, Dehumidification or Ventilation.

Press [MODE] to set system to OFF.
Press [MENU] to enter main menu.
Press and hold [SETUP] for seven seconds, [INSTALL SETUP] appears.
Press [INSTALL SETUP] to enter installer setup menu.

Press ▲ or ▼ to adjust the option .
Press [MENU] to exit .
Press [NEXT] to select option .
If Indoor Air Quality was selected, Press ▲ or ▼ to adjust the Outdoor Sensor setting or Indoor Air Quality option.
Press [NEXT] to select Outdoor Sensor setting or Indoor Air Quality option .
System Settings can now be changed .

CHANGE SYSTEM SETTINGS

Press [NEXT] or [BACK] to page through the settings.
Press ▲ or ▼ to adjust the setting.
Press [DONE] to save and exit, or [CANCEL] to exit without saving.
The thermostat will discard changes and exit if nothing is pressed within 60 seconds.
To reset the installer settings to the default, reset the thermostat by pressing the [RESET] button for 5 seconds.

HVAC INSTALLER SYSTEM SETTINGS TABLE
The following table contains the system settings and their details . Default settings are shown in bold . Some settings are only available dependent upon the value of other settings .

System setting| Description| Factory default setting (bold) and setting range
---|---|---
00. Equipment Type| Equipment type set by SW1.| Heat /Cool
Heat Pump
01. Control Setup| Used to lockout heating or cooling outputs. (Only available in Heat/Cool mode.)| Heat and Cool
Heat Only Cool Only
02. Number of Stages| Number of equipment stages. (Three is only available in Heat/Cool mode.)| One Two Three
03. Aux Heat Stages| Number of auxiliary heat equipment stages.| One
Two
04. Temperature Scale| Set the thermostat to Fahrenheit or Celsius mode.| Fahrenheit
Celsius
05. Heat/Cool: Fan Control in Heating
Heat Pump: Auxiliary Equipment Type| Heat/Cool: Determines if the thermostat or equipment controls the fan in heating.
Heat Pump: Auxiliary Equipment type.| Gas/Oil Heat (equipment controls fan)
Electric Heat (thermostat controls fan)
06. Extended Fan – Heat| Extends fan operation after heat call ends.| Disable
Enable (90 second extension)
07. Extended Fan – Cool| Extends fan operation after cool call ends.| Disable
Enable (90 second extension)
08. Internal Temp Sensor Offset| Field adjustment of internal temperature sensor.| 0° (no offset applied)
-4°F to +4°F (-2°C to +2°C)
35. Internal RH Sensor Offset| Field adjustment of internal RH sensor.| 0 (no offset applied)
-5% to +5%
09. Auto Changeover| Enable or disable auto changeover mode.| Disable
Enable
26. Deadband| Auto Changeover mode deadband.| 3°F (2°C)
2°F to 9°F (1°C to 5°C)
10. Remote Sensor| Select if remote sensor is attached.| No
Yes
11. Outdoor Sensor| Select if outdoor sensor is attached or not.| No
Yes
35. Return Sensor| Select if return sensor is attached or not.| No
Yes
12. Compressor Min Off Time| Minimum off time for compressor protection.| 5 minutes
1 to 5 minutes
13. Heating Min Off Time| Minimum off time for heating.| 2 minutes
1 to 5 minutes
14. Equipment Min On Time| Minimum on time for heating and cooling.| 2 minutes
1 to 5 minutes
15. Auto Changeover Time| Minimum time between heating and cooling calls.| 4 minutes
1 to 5 minutes
16. First Stage Differential| 1st stage differential.| 1°F (0.5°C)
1°F to 9°F (0.5°C to 4.5°C)
17. Second Stage Differential| 2nd stage differential.| 1°F (0.5°C)
1°F to 9°F (0.5°C to 4.5°C)
18. Third Stage Differential| 3rd stage differential.| 1°F (0.5°C)
1°F to 9°F (0.5°C to 4.5°C)

HVAC INSTALLER SYSTEM SETTINGS TABLE (CONTINUED)

System setting| Description| Factory default setting (bold) and setting range
---|---|---
19. Fourth Stage Differential| 4th stage differential.| 1°F (0.5°C)
1°F to 9°F (0.5°C to 4.5°C)
20. Heat Blast| Enables the Heat Blast feature.| Disable
Enable
21. Blast Offset| Amount of heating when Heat Blast is initiated.| 3°F (2°C)
3°F to 5°F (2°C to 3°C)
22. Screen Lockout| Screen lockout level. (Override lockout by holding [MENU] for 7 seconds.)| Off Part Full
23. Partial Lockout Type| Select lockout type. (Only available when screen lockout is set to partial.)| Fan/Mode/Setpt Fan/Setpoints Setpoints Only
24. Max Temp Setpoint Change In Lockout| Select temperature setpoint limits. (Only available when screen lockout is set to partial.)| 3 degrees
0 to 20 degrees
41. Max Dehum Setpoint Change In Lockout| Select dehumidification setpoint limits. (Only available when screen lockout is set to partial.)| 5 Percent RH
0 to 15 Percent RH
25. Stage Rate| Accumulation of equipment run time in equipment staging determination.
1 = more rapid staging of equipment (comfort) 5 = slower staging of equipment (economy)| 2
1 to 5 or “OFF” to ignore accumulated run time.
27. Progressive Recovery| Enable or disable progressive recovery.| Disable
Enable
28. Low Balance Point| Outdoor temperature low balance point. (This option is only displayed if the outdoor sensor is enabled.)| 20°F (-6°C)
10°F to 50°F (-12°C to 9°C) or OFF to ignore
29. High Balance Point| Outdoor temperature high balance point. (This option is only displayed if the outdoor sensor is enabled.)| 65°F (18°C)
40°F to 85°F(3°C to 18°C) or OFF to ignore
30. Program Format| Select weekly program format.| 7-Day (Mon, Tue, Wed, Thu, Fri, Sat, Sun) 5/1/1 (weekdays, Saturday and Sunday) 5/2 Weekdays (weekdays and weekends) Non-Prog
32. Events Per Day| Number of program events per day.| Four
Two
33. Reset Service Reminders| Clears the Change Air Filter and HVAC and Dehumidifier 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.| No
Yes
37. HVAC Service Reminder| The period for displaying the “HVAC Service Reminder” message.| Off
1 to 12 months or “Off” to disable
38. Constant Backlight| Enable constant, low intensity backlight when 24VAC is present.| Disable
Enable
39. Backlight Intensity| Backlight intensity as a percentage of full on.| 100 Percent
0 to 100 Percent
40. Auto Daylight Savings| Enable or disable auto daylight savings.| Off
March (second Sunday in March to the first Sunday in November)
April (first Sunday in April to the last Sunday in October)

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 an outdoor temperature sensor (recommended) enables additional Indoor Air Quality functionality. If the outdoor temperature sensor was not enabled in the HVAC system settings, HVAC system setting 11, outdoor sensor, will be presented prior to entering the Indoor Air Quality system settings.
Please refer to the Model 8910 Owner’s Manual for further information about thermostat features.
Air Cleaning System Settings Table

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

Humidifier System Settings Table

System setting| Description| Factory default setting (bold) and setting range
---|---|---
Humidifier Installed| Selects if a humidifier is installed. Yes/On HVAC is used for applications where the humidifier is installed on the HVAC duct. Yes/Standalone is used for application where the humidifier is independent of the HVAC system.
(If set to no, no other humidifier settings will be available.)| No
Yes/On HVAC Yes/Standalone
Humidifier Mode| Selects auto or manual mode. Auto mode controls humidity based on the humidity setting and outdoor temperature. Manual mode controls humidity based on the %RH setpoint.
(Auto mode is only available if outdoor sensor is set to Installed.)| Auto
Manual
Humidity Setpoint Deadband| Selects the minimum difference between the humidifier and dehumidifier setpoints.
(Only available if a humidifier is installed and dehumidifier control is set to air conditioner. Available in both set-ups.)| 10 Percent RH
10 to 20 Percent RH
Humidifier Operation| Selects when humidification is allowed to occur relative to heating and fan operation. Without Fan allows humidification to occur without the HVAC fan. This option should only be used when the humidifier is independent of the HVAC system. Note: Without Fan is only available when Humidifier Installed is set to Yes/Standalone.| Heat Only
Heat or Fan
Forces Fan
Without Fan
CAUTION: When Humidifier Operation is set to Without Fan the thermostat will turn on humidification without energizing the HVAC fan. Do not select this option when the humidifier is installed on the HVAC duct. Without airflow moisture can accumulate in the duct resulting in significant damage.
Change Water Panel Reminder| Selects the when the “Change Water Panel” message is displayed.| Off
1 Per Season
2 Per Season 300 Hours
600 Hours
Reminder Month (Change Water Panel Reminder set to 1 per Season)
First Reminder Month (Change Water Panel Reminder set to 2 per Season)| Change Water Panel Reminder set to 1 per Season:
Determines the month the “Change Water Panel” message is displayed .
Change Water Panel Reminder set to 2 per Season:
Determines the first month the “Change Water Panel” message is displayed .| October
November
December
January
February
March
April
May
June
July
August
September
Second Reminder Start Month| Determines the second month the “Change Water Panel” message is displayed . (Only available when Change  Water Panel Reminder set to 2 per Season .)| October
November
December
January
February
March
April
May
June
July
August
September

Dehumidifier System Settings Table

System setting| Description| Factory default setting (bold) and setting range
---|---|---
Dehumidifier Control| Selects method of dehumidification.(If set to none, no other dehumidifier settings will be available.)| None (no dehumidification installed) Whole Home
Air Conditioner
Humidity Setpoint Deadband| Select the minimum difference between the humidifier and dehumidifier setpoints. (Only available if both a humidifier and dehumidifier are installed. Available in both set-ups.)| 10 Percent RH
10 to 20 Percent RH
Lockout Dehumidifier During Cooling| Selects if dehumidification is disabled during a cooling call.| No Yes
Dehumidifier Forces Fan| Select if dehumidification can turn on the fan.| No Yes
Dehumidifier Service Reminder| The period for displaying the “Dehum Service Reminder” message.| Off
1 to 12 months or “Off” to disable
Dehumidifier Overcooling Limit| Selects the amount of overcooling that can occur for dehumidification. (Only available if dehum control is set to air conditioner.)| 3°F (1.5°C)
1°F to 3°F (0.5°C to 1.5°C)
Dehumidify in Vacation Mode| Selects if dehumidification with the air conditioner is done in Vacation Mode. (Only available if dehum control is set to air conditioner.| No
Yes
Vacation Dehumidifier Low Temp Limit| Sets the lowest temperature the air conditioner will cool to meet RH setpoint in Vacation Mode. (Only available if dehum control is set to air conditioner.)| 15°F (24°C)
70°F to 85°F (21°C to 29°C)

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

Ventilation System Settings Table

System setting| Description| Factory default setting (bold) and setting range
---|---|---
Fresh Air Vent Installed| Selects if ventilation is installed. (If set to No, no other ventilation settings will be available.)| No
Yes
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.| Comfort Code
Number of Bedrooms| Selects the number of bedrooms to be used for the Calculated Minutes per Hour.| 3 Bedrooms
1 to 10 Bedrooms
Home Size| Selects the size of the home to be used for the Calculated Minutes per Hour.| 2500 SQ FT
500 to 7500 SQ FT
Measured CFM| Selects the ventilation CFM to be used for the Calculated Minutes per Hour| 110 CFM
30 to 250 CFM
Calculated Minutes per Hour| Displays the Fresh Air Time calculated.| None
Range 6 to 60 Minutes
Override| Manual adjustment of Calculated Minutes per Hour.| (Calculated Minutes per Hour) Range 6 to 60 Minutes
Enable High Vent RH Limit| Selects if ventilation is disabled if the indoor RH exceeds the indoor RH limit. (Only available if Fresh Air Setup is set to Comfort.)| Yes No
High Vent RH Limit| Sets the ventilation indoor RH lockout limit. (Only available if Enable High Vent RH Limit is set to Yes.)| 55%
45% to 70%
Enable Low Vent RH Limit| Selects if ventilation is disabled if the indoor RH exceeds the indoor RH limit. (Only available if Fresh Air Setup is set to Comfort.)| No
Yes
Low Vent RH Limit| Sets the ventilation indoor RH lockout limit. (Only available if Enable Low Vent RH Limit is set to Yes.)| 20%
10% to 30%
Enable High Vent Temperature Limit| Enables high ventilation temperature lockout limit. (Only available if Outdoor Sensor is set to Installed.)| No
Yes
High Vent Temperature Limit| Sets high ventilation temperature lockout limit. (Only available if Enable High Vent Temperature Limit is set to Yes.)| 100°F (38°C)
85°F to 105°F (29°C to 41°C)
Enable Low Vent Temperature Limit| Enables low ventilation temperature lockout limit. (Only available if Outdoor Sensor is set to Installed.)| No
Yes
Low Vent Temperature Limit| Sets low ventilation temperature lockout limit (Only available if Enable Low Vent Temperature Limit is set to Yes.)| 10°F (-12°C)
-10°F to 40°F (•24°C to 6°C)
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.)| Yes
Yes with high and low limits No
Enable High Mixing Temperature| Enables high mixing temperature. (Only available is HVAC Fan with Vent is set to Yes with high and low limits.)| No
Yes
High Mixing
Temperature| Sets the high mixing temperature. (Only available if Enable High Mixing Temperature is set to Yes.)| 80°F or (26°C)
60°F to 105°F (14°C to 41°C)
Enable Low Mixing Temperature| Enables low mixing temperature. (Only available is HVAC Fan with Vent is set to Yes with high and low limits.)| No
Yes
Low Mixing Temperature| Sets the Low mixing temperature. (Only available if Enable Low Mixing Temperature is set to Yes.)| 40°F (6°C)
0°F to 50°F (-18°C to 12°C)

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.

SYSTEM TEST STEPS
Heating equipment test
Cooling equipment test
Fan equipment test
Humidification equipment test
Dehumidification equipment test
Ventilation equipment test
Air Cleaning equipment test

Each equipment test will begin with the selection of turning on the output or stage as shown below.
Press ▲ or ▼ or to change the selection.
Press [NEXT] to accept the selection and proceed to the next step.
If YES is selected, the thermostat will test the corresponding output. If NO is selected, the thermostat will proceed to the next step.

While the equipment test is active the corresponding test information will be shown.
Press [NEXT] to accept the selection and proceed to the next test selection.

SYSTEM TEST TABLES
Heat / Cool Heating Equipment Test

Heat Pump Heating Equipment Test (Electric Heat)

Compressor Stages| Aux Stages| | | W| W2| B| Y| Y2| O| G
---|---|---|---|---|---|---|---|---|---|---
1| 1| | 1st Stage Test| | | ON| ON| | | ON
1| 1| | 2nd Stage Test| ON| | ON| ON| | | ON
| | | | | | | | | |
2| 1| | 1st Stage Test| | | ON| ON| | | ON
2| 1| | 2nd Stage Test| | | ON| ON| ON| | ON
2| 1| | 3rd Stage Test| ON| | ON| ON| ON| | ON
| | | | | | | | | |
1| 2| | 1st Stage Test| | | ON| ON| | | ON
1| 2| | 2nd Stage Test| ON| | ON| ON| | | ON
1| 2| | 3rd Stage Test| ON| ON| ON| ON| | | ON
| | | | | | | | | |
2| 2| | 1st Stage Test| | | ON| ON| | | ON
2| 2| | 2nd Stage Test| | | ON| ON| ON| | ON
2| 2| | 3rd Stage Test| ON| | ON| ON| ON| | ON
2| 2| | 4th Stage Test| ON| ON| ON| ON| ON| | ON
Heat Pump Heating Equipment Test (Gas Heat)

Compressor Stages| Aux Stages| | W| W2| B| Y| Y2| O| G
1| 1| 1st Stage Test| | | ON| ON| | | ON
1| 1| 2nd Stage Test| ON| | ON| | | |
| | | | | | | | |
2| 1| 1st Stage Test| | | ON| ON| | | ON
2| 1| 2nd Stage Test| | | ON| ON| ON| | ON
2| 1| 3rd Stage Test| ON| | ON| | | |
| | | | | | | | |
1| 2| 1st Stage Test| | | ON| ON| | | ON
1| 2| 2nd Stage Test| ON| | ON| | | |
1| 2| 3rd Stage Test| ON| ON| ON| | | |
| | | | | | | | |
2| 2| 1st Stage Test| | | ON| ON| | | ON
2| 2| 2nd Stage Test| | | ON| ON| ON| | ON
2| 2| 3rd Stage Test| ON| | ON| | | |
2| 2| 4th Stage Test| ON| ON| ON| | | |

Heat / Cool Cooling Equipment Test

| W| W2| W3| Y| Y2| Y3| G
---|---|---|---|---|---|---|---
1st Stage Test| | | | ON| | | ON
2nd Stage Test| | | | ON| ON| | ON
3rd Stage Test| | | | ON| ON| ON| ON

Heat Pump Cooling Equipment Test ****

| W| W2| B| Y| Y2| O| G
---|---|---|---|---|---|---|---
1st Stage Test| | | | ON| | ON| ON
2nd Stage Test| | | | ON| ON| ON| ON
Fan Equipment Test

W| W2| W3/B| Y| Y2| Y3/O| G
| | | | | | ON

Humidification Equipment Test

Dehumidification Equipment Test

HUM| DH NO /DH COM| VENT| EAC| G
| ON| | | ON
Ventilation Equipment Test

HUM| DH NO /DH COM| VENT| EAC| G
| | ON| | ON

Ventilation Equipment Test

QUICK REFERENCE TO CONTROLS & DISPLAY

HOME SCREEN

MAIN MENU

EQUIPMENT CONTROL MODULE LEDs
POWER/STATUS – On solid during normal operation. Flashes when connection to the thermostat is lost and at power-up while the thermostat connection is being established.
HEATING – On when heating outputs are active.
COOLING – On when cooling outputs are active.
FAN – On when fan output is active.
HUMIDIFIER – On when humidifier output is active.
DEHUMIDIFIER – On when dehumidifier output is active.
VENTILATION – On when ventilation output is active.
AIR CLEANING – On when air cleaner output is active.

TROUBLESHOOTING

DISPLAY IS BLANK
If Power LED not illuminated at the equipment control module check the following.

• Check circuit breaker and reset if necessary.
• Make sure power switch at heating & cooling system is on.
• Make sure furnace door is closed securely.

HEATING SYSTEM DOES NOT RESPOND (“HEATING” APPEARS ON SCREEN)

• Check for 24VAC at the equipment on the secondary side of the transformer between power and common. If voltage is not present, check the heating equipment to find the cause of the problem.
• Check for 24VAC between the heat terminal (W) and the transformer common. If 24VAC is present, the thermostat is functional. Check the heating equipment to find the cause of the problem.
• Check for loose or broken wires between the thermostat and the heating equipment.

COOLING SYSTEM DOES NOT RESPOND (“COOLING” APPEARS ON SCREEN)

• Check for 24VAC at the equipment on the secondary side of the transformer between power and common. If voltage is not present, check the cooling equipment to find the cause of the problem
• Check for 24VAC between the cooling terminal (Y) and the transformer common. If 24VAC is present, the thermostat is functional. Check the cooling system to find the cause of the problem.
• Check for loose or broken wires between the thermostat and the cooling equipment.

FAN DOES NOT TURN ON IN A CALL FOR HEAT

• Check System Setting 09 (Fan Control), to make sure the fan control is properly set to match the type of system.

HEAT PUMP ISSUES COOL AIR IN HEAT MODE, OR WARM AIR IN COOL MODE

• Check wiring at the terminal block to confirm the reversing valve is connected to the proper terminal.
  O is active in cooling and B is active in heating.

HEAT/COOL BOTH ON AT SAME TIME

• Check SW1 (Equipment Type), to make sure it is set to match the installed heating/cooling equipment.
• Check to make sure heating and cooling wires are not shorted together.

HEATING EQUIPMENT IS RUNNING IN COOL MODE

• Check SW1 (Equipment Type), to make sure it is set to match the installed heating/cooling equipment (see page 11).

“HEATING” IS NOT DISPLAYED

• Check Installer System Setting number 05 (Control Setup) is set correctly.
• Change the System Mode to Heat, and set the temperature level above the current room temperature.

“COOLING” IS NOT DISPLAYED

• Check Installer System Setting number 05 (Control Setup) is set correctly.
• Change the System Mode to Cool, and set the temperature level below the current room temperature.

ERROR CODES

If the thermostat enters an error mode, all outputs are turned off . The thermostat attempts to recover every 10 minutes.
If the error does not clear, use the reset button . This will return all settings back to factory default.

interface module

THERMOSTAT FEATURES

• Indoor air quality control.
  – Humidification automatic or manual control.
  – Dehumidification.
  – Event-Based™ air cleaning.
  – Ventilation with temperature and humidity limits.

• Temperature control.

• Heat Blast™ raises the room temperature 3°F to 5°F.

• Support for optional wireless outdoor temperature sensor.

• Large touch screen with adjustable backlight – constant backlight option available.

• Message center provides feedback and instructions.

• 7 day programmability or separately programmable weekday/weekend schedules.

• Thermostat can be removed from the wall for easy programming (batteries must be installed).

• Front battery door access for fast, easy replacement.

• Displays room temperature, room humidity, temperature setting, and optional outdoor temperature.

• Air filter, humidifier, dehumidifier, and HVAC service reminders.

• Programmable fan control with fan circulation mode.

• Easy to use temperature control can override program schedule at any time.

• Progressive recovery ensures proper temperature at the start of a program event.

• Built in compressor protection prevents damage to your equipment.

• System test mode.

SPECIFICATIONS

Environment

Temperature (Shipping)| -30° to 150°F (-34° to 65°C)
Temperature Thermostat (Operating)| 32° to 120°F (0° to 48°C)
Temperature Equipment Control Module (Operating)| 32° to 158°F (0° to 70°C)
Relative humidity| Operating: 5% to 90% R.H. (non-condensing)
Electrical

Operating voltage| 24VAC (18 – 30VAC)
Current| Maximum: 2.5A (total), 1.0A (single output) Maximum surge current: 5A
Battery back-up| AA size alkaline battery x 2
Control

Outdoor, Remote, Leaving and Return temperature sensor| Maximum distance: 300 feet
Room temperature measurement| Display range: 32° to 99°F (0° to 40°C)
Return and Leaving temperature measurement| Display range: -20° to 160°F (-30° to 71°C)
Outdoor temperature  measurement| Display range: -20° to 130°F (-30° to 55°C)
Setpoint temperature range| Heat: 40° to 90°F (4° to 32°C)
Cool: 50° to 99°F (10° to 37°C)
Setpoint humidity range| Humidification: 10% to 50% R.H.
Dehumidification: 50% to 90% R.H.

P .O . Box 1467 • Madison, WI 53701-1467 • Phone: 800/334-6011 • Fax: 608/257-4357
www.aprilairepartners.com
61000850 2.17
B2205646E
U .S . Patent Numbers 8,146,376, 8,596,078 and other patents pending
© 2017 Aprilaire – A division of Research Products Corporation

References

• AprilAire Partners
• Manual-Hub.com – Free PDF manuals!

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