Aprilaire 8570 User manual

Premium Programmable Thermostat
READ AND SAVE THESE INSTRUCTIONS
Owner’s Manual
Model 8570
Includes Operating Instructions
and Warranty Information

About half of all energy used by households goes to heating and cooling the
home. By selecting a programmable Aprilaire®Electronic Thermostat, you have
made a significant step toward conserving energy usage and costs, while
improving your indoor comfort.
In fact, the Aprilaire®Model 8570 Premium Programmable Thermostat has earned
the “ENERGYSTAR®” designation of the U.S. Environmental Protection Agency (EPA).
This means that your Aprilaire Thermostat is a highly efficient, cutting edge
product that is good for the environment. It saves energy and costs less to operate
than similar products that do not qualify for the ENERGYSTAR label.
ENERGYSTAR products help you differentiate between
standard efficiency and high efficiency products. By
using ENERGYSTAR products, you are helping to prevent
air pollution while saving money on your utility bills.
According to the EPA, by programming your thermostat and taking advantage of the times
that a building is unoccupied or the occupants are asleep, an ENERGYSTAR thermostat can
reduce heating and cooling bills by as much as $150. The Aprilaire Thermostat has
programmable capabilities that allow you full flexibility to set your heating and cooling
systems to meet your comfort and energy needs. As an ENERGYSTAR partner, Aprilaire has
determined that this product meets the ENERGYSTAR guidelines for energy efficiency.
TABLE OF CONTENTS
PAGE
ENERGYSTAR®Program Information . . . . . . . . . . . . . . . . . . 1
Getting Familiar with your
Aprilaire®8570 Thermostat. . . . . . . . . . . . . . . . . . . . . . . 2
Operating Your Thermostat . . . . . . . . . . . . . . . . . . . . . . . 4
Setting the Mode of Operation – Heat, Cool, etc. . . . . . 5
Temporarily Raising and Lowering
the Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Fan Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Setting the Date and Time . . . . . . . . . . . . . . . . . . . . . . . 9
PAGE
Programming your Thermostat . . . . . . . . . . . . . . . . . . . 10
Holding Temperature – Holiday and Permanent . . . . . 12
Settings Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Info Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Viewing Other Thermostats on the System . . . . . . . . . 18
In Case of Power Failure . . . . . . . . . . . . . . . . . . . . . . . . 19
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Event
Desired
Temperature
Setting
Daily
Time
Schedule
Wake Heat = 70°
Cool = 78° 6:00 am
Leave Heat = 62°
Cool = 85° 8:00 am
Return Heat = 70°
Cool = 78° 5:00 pm
Sleep Heat = 62°
Cool = 82° 10:00 pm
ENERGYSTAR®PROGRAM INFORMATION
1
Program your thermostat
to save energy while
you’re asleep or away.
Saving energy helps
prevent global warming
LEARN MORE AT
energystar.gov

FIGURE 1 – GETTING FAMILIAR WITH YOUR APRILAIRE®8570 THERMOSTAT
EQUIPMENT
STATUS
OUTDOOR
TEMPERATURE
ROOM
TEMPERATURE
MESSAGE
CENTER
SETPOINTS
UP/DOWN BUTTONS
MULTI-FUNCTION
BUTTONS
MESSAGE CENTER
Normally this is where you will find the current date and time
and the name of the current event if running the temperature
program. If the thermostat is in a Hold State, the thermostat will
display when the Hold State is scheduled to end. The area is also
used to give information on when you should replace your air
filter or UV lamp, when you should service your humidifier and
general HVAC equipment.
When installed with an Aprilaire®Automatic Digital Humidifier
Control (Model 58) and Humidifier, the message center will also
inform you if the humidifier is operating.
EQUIPMENT STATUS
In this area of the display, the thermostat will show the
equipment’s mode and whether the equipment is active. A typical
message in this area would be HEAT MODE when the equipment
is not running and HEATING when the equipment is active.
OUTDOOR TEMPERATURE
The thermostat has terminals that can be hooked up to an
outdoor temperature sensor. If this is installed, outdoor
temperature will be displayed in this area of the screen.
When installed with an Aprilaire®Automatic Digital Humidifier
Control (Model 58) or an Aprilaire®Model 6504 Intelligent Zoned
Comfort System, this information is communicated to the thermostat
so there is no need for the extra outdoor temperature sensor.
ROOM TEMPERATURE
The large temperature on the screen is the room temperature.
The scale can be changed from Fahrenheit to Celsius if desired.
SETPOINTS
The setpoints are the temperature(s) to which the thermostat
is controlling.
MULTI-FUNCTION BUTTONS
The multi-function buttons are used throughout the thermostat
menu system and have many functions. The description on the
screen directly above the button is what that button is used for in
that particular screen. In Figure 1, the left button would be used
for INFO and the right button would be used for MENU.
UP/DOWN BUTTONS
These buttons are used to raise and lower temperature and to
navigate through the thermostat’s menus.
2 3

OPERATING YOUR THERMOSTAT
Backlight Operation
When any button is pressed, the backlighting will
illuminate. Once the backlight is on, subsequent button
presses will perform their respective tasks.
Using the Up & Down Buttons and Multi-Function
Buttons on the Thermostat
This thermostat uses a menu driven display and four (4)
buttons. The Up and Down buttons are generally used
to move between selections in the menu and to raise
and lower different parameters such as temperature,
days, minutes etc., depending on which screen you are
viewing. The multi-function buttons have a variety of
uses. The portion of screen directly above these
buttons will display the button’s function. For instance,
when the main screen is being viewed, the buttons are
titled INFO and MENU from left to right respectively.
To access the menu of the thermostat, press the right
multi-function button.
Notes on Temperature Adjustments
The Cool setting must always be 2° or 5° (F or C)
higher than the Heat setting. The value (2° or 5°) is
selectable. The thermostat will automatically change
the temperature setting not being adjusted to maintain
this difference, even if both settings are not shown on
the display.
4 5
1. Setting the Mode of Operation – Heat, Cool, etc.
The thermostat can be set to OFF, HEAT, COOL, AUTO and EMERGENCY HEAT (EMERGENCY HEAT
for heat pumps only) modes. To set the mode, press the MENU button on the main screen.
Once in the Main Menu screen, use the down button to move the highlighted text to the desired
mode, then press SELECT.
Example: Placing thermostat in HEAT MODE.
9/11/05 5:15PM
OUTDOOR OFF MODE
45° FAN AUTO
INFO MENU
72°
MAIN MENU
SET MODE:
OFF
AUTO
COOL
HEAT
SET FAN:
AUTO
ON MORE
EXIT SELECT
HEAT
9/11/05 5:15PM
OUTDOOR HEAT MODE
45° FAN AUTO
SETPOINT
HEAT 74
INFO MENU
72°
CAUTION: Do not set to OFF mode during periods when freezing temperatures could occur.
NOTE: When installed with an Aprilaire®Model 6504 you will be given the option to CHANGE ALL
THERMOSTATS. If you select YES to this, the mode setting will be set to whatever you have selected
for all the thermostats on the system.

6 7
3. Fan Operation
The thermostat allows you to operate the fan manually or it can change the fan setting for you automatically with
each programming event.
For manual operation, from the MAIN MENU simply select SET FAN: ON to run the fan all the time, or
SET FAN: AUTO to run the fan only during heating and cooling calls.
NOTE: When installed with an Aprilaire®Model 6504 you will be given the option to CHANGE ALL THERMOSTATS.
If you select YES to this, the fan setting will be set to whatever you have selected for all the thermostats on the system.
For automatic operation, select PROGRAMMED FAN from the MAIN MENU, and then select ENABLE. In the Fan Status
setting screen, you set the fan to be either ON or AUTO during each of the programming events (see page 10 for
details on the programming events). Use the and buttons to move to the Fan Status you wish to change, and use
the or to change to ON or AUTO. Once you are done, use the button to highlight DONE and then press SAVE.
2. Temporarily Raising and Lowering the Temperature
You can raise or lower the temperature by simply pressing the Up/Down buttons, then SAVE.
Example: The Setpoint is at 68°, you want the temperature to be 72°.
If you are in AUTO Mode, both heat and cool settings will be displayed on the hold screen.
First you can change the Heat setting, then the Cool setting. If you do not want to change one
of these settings, simply select the or to go to the next setting or BACK to go to the
main screen.
If you were running the temperature program when you made the change, the message center
displays when the thermostat will return to programmed operation. Press the RESUME PROG.
button to return to programmed operation at any time.
9/11/05 5:15PM
OUTDOOR OFF MODE
45° FAN AUTO
INFO MENU
72°
9/11/05 5:15PM
OUTDOOR OFF MODE
45° FAN ON
INFO MENU
72°
MAIN MENU
SET MODE:
OFF
AUTO
COOL
HEAT
SET FAN:
AUTO
ON MORE
EXIT SELECT
ON
HOLD THIS
TEMPERATURE
UNTIL 10:00PM
HEAT COOL
BACK
71°
HEAT
76°
8/27/05 5:15PM
OUTDOOR AUTO MODE
81° FAN AUTO
SETPOINT
HEAT 71
COOL 76
INFO MENU
76°
HOLD TIL 10:00PM
OUTDOOR COOLING
81° FAN AUTO
SETPOINT
HEAT 71
RESUME COOL 74
PROG. MENU
76°
HOLD THIS
TEMPERATURE
UNTIL 10:00PM
HEAT COOL
SAVE
71°
COOL
74°
3/11/05 5:15PM
OUTDOOR HEAT MODE
20° FAN AUTO
SETPOINT
HEAT 68
INFO MENU
68°
HOLD TIL 10:00PM
OUTDOOR HEAT MODE
20° FAN AUTO
SETPOINT
HEAT 72
RESUME
PROG. MENU
68°
HOLD THIS
TEMPERATURE
UNTIL 10:00PM
HEAT
BACK SAVE
72°
HEAT
MAIN MENU MORE
HOLD
PROGRAM
PROGRAMMED FAN
SETTINGS
SET DATE AND TIME
EXIT SELECT
PROGRAMMED FAN
DISABLE
ENABLE
BACK SELECT
PROGRAMMED FAN
FAN STATUS
WAKE AUTO
LEAVE AUTO
RETURN AUTO
SLEEP AUTO
DONE
WAKE AUTO
PROGRAMMED FAN
FAN STATUS
WAKE ON
LEAVE AUTO
RETURN ON
SLEEP ON
DONE
CANCEL SAVE
DONE
PROGRAMMED FAN
ENABLE

8 9
When operating Programmed Fan, you can temporarily change the fan status by selecting SET FAN: ON or AUTO
from the MAIN MENU, but it will return to the program at the start of the next programming event. To
permanently discontinue automatic fan operation, select DISABLE from the PROGRAMMED FAN menu.
4. Setting the Date and Time
In the SET DATE AND TIME menu, you can set the correct date and time and activate or deactivate the
automatic Daylight Savings Time Adjustment.
4.1 Automatic Daylight Savings Adjustment
When ‘AUTO DAYLIGHT SAVINGS’ is selected, you have the option of selecting ‘ON’ or ‘OFF’.
When this feature is set to ON, the clock will automatically compensate for Daylight Savings Time.
4.2 Date & Time Screens
When SET DATE and TIME is selected from the Menu, you will be taken through a series of steps to set the
month, day, year, hour and minute. Use the Up/Down buttons to adjust the values. Use the or to move
from month, to day, year, etc. Then select SAVE when done.
NOTE: When installed with an Aprilaire®Model 6504 you will be given the option to CHANGE ALL
THERMOSTATS. If you select YES to this, the time setting will be set on all the thermostats on the system.
MAIN MENU MORE
HOLD
PROGRAM
PROGRAMMED FAN
SETTINGS
SET DATE AND TIME
EXIT SELECT
SET DATE AND TIME
SET DATE AND TIME
AUTO DAYLIGHT SAVING
BACK SELECT
SET DATE AND TIME
AUTO DAYLIGHT SAVING
AUTO DAYLIGHT SAVING
ON
OFF
BACK SELECT
ON
DONE
SET DATE AND TIME
SET MINUTES
11/ 27/05 1: PM
SAVE
00
SET MINUTES
SET DATE AND TIME
SET HOUR
11/27/05 :00
SET HOUR
SET DATE AND TIME
SET DAY
11/ /05 12:00PM
SET DAY
01
SET DATE AND TIME
SET MONTH
/ 01/05 12:00PM
BACK
SET MONTH
1
SET DATE AND TIME
SET YEAR
11/ 27/ 12:00PM
SET YEAR
05
12PM

1110
5. Programming Your Thermostat
5.1 Programming a Day or Series of Days
The PROGRAM MENU is located in the MAIN MENU. After selecting this menu, you have the option of
programming everyday, weekdays, weekends, or individual days. Once you’ve selected a certain day to program,
a screen appears that allows you to set the time, heat setting and cool setting for each event.
Once you have set the correct times and temperatures, highlight DONE
and push the SAVE button. The DONE screen will appear to let you know
your changes are saved. You have now programmed your thermostat.
MONDAY
TIME HEAT COOL
WAKE
6:00AM 70 78
LEAVE
8:00AM 62 85
RETURN
4:30PM 70 78
SLEEP
10:00PM 70 78
DONE
MAIN MENU MORE
HOLD
PROGRAM
PROGRAMMED FAN
SETTINGS
SET DATE AND TIME
EXIT SELECT
PROGRAM MENU
EVERYDAY
WEEKDAYS
WEEKENDS
MONDAY
TUESDAY
WEDNESDAY
MORE
BACK SELECT
MONDAY
TIME HEAT COOL
WAKE
6:00AM 70 78
LEAVE
8:00AM 62 85
RETURN
4:30PM 70 78
SLEEP
10:00PM 70 78
DONE
CANCEL SAVE
DONE
PROGRAM MONDAY
WAKE 6:00AM
DONE
MONDAY
TIME HEAT COOL
DAY
6:00AM 70 78
NIGHT
8:00AM 62 85
DONE
MONDAY
TIME HEAT COOL
OCC
6:00AM 70 78
UNOCC
8:00AM 62 85
DONE
OCC 6:00AM
6:00AM
DAY
NOTE: When EVENTS PER DAY are
set to 2-BUSINESS or 2-RESIDENTIAL
(see page 15) the programming
screen will look like above.
2-BUSINESS
2-RESIDENTIAL
5.2 Copying a Program from One Day to Another
In the PROGRAM MENU, there is an option to COPY. The option can be used to copy the program
from one day to another day or series of days (i.e. weekdays or weekends). After COPY is
selected, the thermostat will prompt you for which day to copy. Next, it will prompt you for which
day to copy the program to. After selecting this information, it will then confirm what is being
copied to where. At this point you have the option of canceling the copy and not saving or saving
and continuing. After selecting OK, the DONE screen will appear, then it will send you back to
the COPY menu. Selecting DONE here will save your copy and return you to the Main Screen.
The BACK button will also save your copy and return you back to the PROGRAM MENU.
PROGRAM MENU
MORE
THURSDAY
SATURDAY
SUNDAY
COPY
BACK SELECT
DONE
COPY
COPY FROM WHICH DAY?
DONE
MONDAY
TUESDAY
WEDNESDAY
THURSDAY
FRIDAY
SATURDAY
SUNDAY
BACK SELECT
COPY TO WHICH DAY?
MONDAY
TUESDAY
WEDNESDAY
THURSDAY
FRIDAY
SATURDAY
SUNDAY
WEEKDAYS
WEEKENDS
EVERYDAY
BACK SELECT
COPY PROGRAM
FROM MONDAY
TO WEEKDAYS?
CANCEL OK
COPY FROM WHICH DAY?
DONE
MONDAY
TUESDAY
WEDNESDAY
THURSDAY
FRIDAY
SATURDAY
SUNDAY
BACK SELECT
MONDAY
WEEKDAYS
DONE

6. Holding Temperature
The HOLD MENU, located in the MAIN MENU, allows you to hold a temperature until a set date and time,
as would be done during a holiday, or allows you to hold a temperature permanently.
6.1 Holiday Hold
You can program the thermostat to hold a temperature for a period of time. Whether you want to hold a temperature for a
few hours or for a few weeks, your thermostat can accommodate your schedule. First the thermostat will prompt you for a
temperature to hold. If you are in AUTO MODE you will be prompted for both a heat setting and a cool setting. Next it will
prompt you for a date and time that you wish to return to programmed operation. On the Main Screen, the INFO button
will change to RESUME PROG. If you choose to cancel the hold, simply press this button and the program will resume.
You must be in HEAT, COOL or AUTO mode to program a hold; the thermostat will inform you of this if you attempt to
HOLD while in the OFF mode.
12 13
MAIN MENU MORE
HOLD
PROGRAM
PROGRAMMED FAN
SETTINGS
SET DATE AND TIME
EXIT SELECT
HOLD MENU
HOLIDAY
PERMANENT
BACK SELECT
DONE
HOLD HOLIDAY
HOLIDAY HOLD MENU
SET HOLD TEMPERATURE
COOL
BACK SAVE
82°
HOLIDAY HOLD MENU
HOLD UNTIL
SET MONTH
/ 27/05 12:00PM
BACK
8
HOLIDAY HOLD MENU
HOLD UNTIL
SET MINUTES
9/ 04/05 1: PM
SAVE
00
SET MONTH SET MINUTES
COOL
APRILAIRE MODEL 8570
SELECT HEAT OR COOL
MODE BEFORE
SETTING HOLD
NOTE: When installed with an Aprilaire®Model 6504 you will be given the option to CHANGE ALL
THERMOSTATS. If you select YES to this, the hold setting will be set on all the thermostats on the system,
and pressing the RESUME button returns all thermostats to programmed operation.
6.2 Permanent Hold
Similar to the Holiday Hold, the thermostat will prompt you to enter the temperature at which you
would like to hold. Once you have selected the temperature, you are returned to the Main Screen.
In order to resume the program, simply press the RESUME PROG. button.
NOTE: When installed with an Aprilaire®Model 6504 you will be given the option
to CHANGE ALL THERMOSTATS. If you select YES to this, the hold setting will be
set on all the thermostats on the system, and pressing the RESUME button returns
all thermostats to programmed operation.
MAIN MENU MORE
HOLD
PROGRAM
PROGRAMMED FAN
SETTINGS
SET DATE AND TIME
EXIT SELECT
HOLD MENU
HOLIDAY
PERMANENT
BACK SELECT
HOLD
PERMANENT
9/11/05 3:15PM
OUTDOOR COOL MODE
95° FAN AUTO
SETPOINT
RESUME COOL 76
PROG. MENU
77°
PERMANENT HOLD
SET HOLD TEMPERATURE
COOL
BACK SAVE
76°
COOL
NOTE: You must not be in the OFF mode
when selecting HOLD. The thermostat
will remind you to set the mode before
completing the HOLD function.
APRILAIRE MODEL 8570
SELECT HEAT OR COOL
MODE BEFORE
SETTING HOLD
NOTE: You must not be
in the OFF mode when
selecting HOLD. The
thermostat will remind
you to set the mode
before completing the
HOLD function.

7. Settings Menu
The SETTINGS menu has many options for you to customize your thermostat.
7.1 Fahrenheit and Celsius
You can change the temperature scale used by the thermostat.
Highlight the scale of your choice and press SELECT.
7.2 12 OR 24 Hour Clock
Within this menu option, you can change the time displayed
by your thermostat to 24 Hour time, (Military Time).
7.3 Display Setpoints
If you do not want the temperature setting displayed on the
Main Screen, you can choose to turn it off in this menu.
14
SETTINGS MENU
°F OR °C
12 OR 24 HOUR CLOCK
DISPLAY SETPOINTS
EVENTS PER DAY
LOCKOUT OPTIONS
MONITORS
MORE
BACK SELECT
SETTINGS MENU
MORE
SET THERMOSTAT NAME
BACK SELECT
°F OR °C
ADJUST CONTRAST
TEMP SCALE
°FAHRENHEIT
°CELSIUS
BACK SELECT
°FAHRENHEIT
12 OR 24 HOUR CLOCK
12 HOUR
24 HOUR
BACK SELECT
12 HOUR
DISPLAY SETPOINTS
ON
OFF
BACK SELECT
ON
7.4 Events Per Day
This is where you can set the number of events per day. (An event is a period of time
scheduled with a certain heating and cooling setpoint.) For instance if you are away from
your home from 8am to 5pm, make this period of time an event and set the thermostat at an
energy saving setting. You have the option of setting the events per day to 4-RESIDENTIAL
(4 events), 2-RESIDENTIAL (2 events), 2-BUSINESS (2 events) or 0-NON PROGRAMMABLE.
If you want to set the thermostat so it can only be changed manually, set the events per day
to 0-NON PROGRAMMABLE.
EVENTS PER DAY
4 - RESIDENTIAL
2 – RESIDENTIAL
2 - BUSINESS
0 – NON PROGRAMMABLE
BACK SELECT
4 - RESIDENTIAL
7.5 Lockout Options
You have the ability to passcode protect the thermostat against undesired changes. You can completely lockout the
thermostat, where no changes of any kind are allowed, or you can limit the changes that can be made. Allowable
changes can be limited to temperature settings, by a specified number of degrees, to fan status, to mode of operation,
or any combination of the three.
To lockout the thermostat, select the LOCKOUT
OPTIONS from the SETTINGS MENU then select
SET PASSCODE/LOCK. You will then be prompted
to enter a passcode.
ENTER PASSCODE
ENTER FIRST DIGIT
00 0 0
BACK
ENTER PASSCODE
ENTER FOURTH DIGIT
1 2 3 4
SAVE
MAIN MENU MORE
HOLD
PROGRAM
PROGRAMMED FAN
SETTINGS
SET DATE AND TIME
EXIT SELECT
SETTINGS
SETTINGS MENU
°F OR °C
12 OR 24 HOUR CLOCK
DISPLAY SETPOINTS
EVENTS PER DAY
LOCKOUT OPTIONS
MONITORS
MORE
BACK SELECT
LOCKOUT OPTIONS
LOCKOUT OPTIONS
SET PASSCODE/LOCK
UNLOCK
BACK SELECT
SET PASSCODE/LOCK
15

16 17
After entering your passcode, you will be prompted to enter the items you want to limit. When the thermostat
has been locked out, the passcode must be entered to change any of the items that have been locked or to
enter the MAIN MENU of the thermostat. The thermostat relocks when it returns to the main operating display.
“LOCKED” appears in the display Message Center when a thermostat has been locked out.
To permanently unlock the thermostat, enter the passcode to get into the SETTINGS MENU, then select
UNLOCK from the LOCKOUT OPTIONS menu.
LIMITED CHANGES
TEMPERATURE CHANGE
LIMIT
+/- 5°
BACK SAVE
DONE
LOCKED
OUTDOOR AUTO MODE
45° FAN AUTO
SETPOINT
HEAT 70°
COOL 78°
INFO MENU
72°
LOCKOUT OPTIONS
CHANGES TO ALLOW
NO CHANGES ALLOWED
ALLOW LIMITED CHANGES
BACK SELECT
ALLOW LIMITED CHANGES
LIMITED CHANGES
ALLOW CHANGES
TO FAN SETTING?
YES
NO
BACK SELECT
YES
LIMITED CHANGES
ALLOW CHANGES
TO MODE SETTING?
YES
NO
BACK SELECT
NO
7.6 Monitors
The MONITORS Menu is where you can set your HVAC service reminders. The items that
the thermostat will remind you of are servicing your air filter, servicing your humidifier,
servicing your UV lamp, and a general service check for your entire system.
NOTE: When installed with an Aprilaire®Model 6504 the monitor settings need only to be
set on one thermostat. The other thermostats in the system will update with the new setting.
NOTE: The ‘AUTO’ option shown above in the SERVICE HUMIDIFIER screen is only available
if installed with an Aprilaire®Automatic Digital Humidifier Control.
To reset an active monitor:
1. Press the CALL DEALER button.
2. Press the RESET button.
3. This will reset the monitor(s) and return you to the Main Screen.
MONITORS
AIR FILTER
SERVICE HUMIDIFIER
UV LAMP
HVAC SERVICE TIMER
BACK SELECT
AIR FILTER
HVAC SERVICE TIMER
OFF
1 MONTH
3 MONTHS
6 MONTHS
1 YEAR
2 YEAR
BACK SELECT
OFF
UV LAMP
OFF
1 YEAR
BACK SELECT
OFF
SERVICE HUMIDIFIER
OFF
AUTO
TWICE/SEASON
ONCE/SEASON
BACK SELECT
OFF
AIR FILTER
1 MONTH
3 MONTHS
6 MONTHS
9 MONTHS
1 YEAR
BACK SELECT
1 MONTH

18 19
8. Info Screen
The Info Screen can be accessed through the Main Screen by pressing
INFO button. When pushed, the screen will show the outdoor
temperature and indoor relative humidity (when connected to an
Aprilaire®Automatic Digital Humidifier Control). Then the thermostat
will display the contact information for your HVAC dealer should you
have any problems or need any supplies.
7.7 Set Thermostat Name
You can give your thermostat a name if you would like. Within this menu, the thermostat
gives you some standard choices. Selecting CUSTOM NAME allows you to customize the
name for your thermostat. This feature is most useful when installed with a Model 6504
Zoned Comfort Control Panel to more easily identify the thermostats on your system.
SET THERMOSTAT NAME
GREAT ROOM
LIVING ROOM
MASTER BEDROOM
BEDROOM
KITCHEN
MORE
BACK SELECT
GREAT ROOM
7.8 Adjust Contrast
The Contrast Adjustment Option allows the user to select a contrast level from 0 (lightest)
to 80 (darkest) in increments of 2. Use the Up/Down arrows to adjust the display contrast
to an appropriate level; and press SAVE.
ADJUST CONTRAST
BACK SAVE
60
APRILAIRE MODEL 8570
OUTDOOR INDOOR
TEMPERATURE HUMIDITY
BACK
68° 45%
APRILAIRE MODEL 8570
XYZ HEATING & COOLING
[555] 555 - 1234
XYZHEATING.COM
MESSAGES:
BACK RESET
9. Viewing Other Thermostats on the
System (Model 6504 Installation Only)
If installed with an Aprilaire®Model 6504,
you have another option in the MAIN MENU.
This option is to VIEW OTHER THERMOSTATS.
When this is selected a list of other
thermostats on the system will be displayed. If you have programmed a name in the THERMOSTAT(S), their
respective name(s) will be displayed. If no names are given, you will see default names such as THERMOSTAT 2.
When viewing other thermostats, you have the option of temporarily changing the temperature setting or
resuming the program. The left multi-function button will be labeled RESUME PROG. if the temperature program is
not running. This button would be used to resume the program, for the thermostat being viewed, if it is in hold.
Either RESUME PROG. or EXIT returns you to the VIEW THERMOSTAT LIST menu.
10. In Case of Power Failure
This thermostat does not require a battery. If the power goes out, the screen is blank. During the period the power is off,
the heating/cooling system will not operate. When power is restored, the thermostat will return to the previous settings.
If the power is off for more than 2 hours, you will need to reset the clock on the thermostat but all other information will
be stored. You will not have to reprogram your thermostat or change any settings that you have previously set.
11. Cleaning
If the surface of the thermostat becomes dirty it can be cleaned with plain water or many non-abrasive household cleaners,
including glass cleaner. When using any cleaner be careful not to get any into the interior of the thermostat. Do not spray
any liquid directly onto the thermostat. Spray the cleaner onto a soft cloth and wipe the surface of the thermostat.
VIEW THERMOSTAT LIST
THERMOSTAT 1
THERMOSTAT 2
THERMOSTAT 3
THERMOSTAT 4
BACK SELECT
THERMOSTAT 1
THERMOSTAT 1
AUTO MODE
FAN AUTO
SETPOINT
HEAT 70°
RESUME COOL 78°
PROG. EXIT
72°
THERMOSTAT 1
MAIN MENU MORE
HOLD
PROGRAM
PROGRAMMED FAN
SETTINGS
SET DATE AND TIME
VIEW THERMOSTAT LIST
EXIT SELECT
VIEW THERMOSTAT LIST

20
ELECTRONIC THERMOSTAT FIVE YEAR
LIMITED WARRANTY
Your Research Products Corporation Aprilaire®Thermostat unit is
expressly warranted for five (5) years from date of installation to
be free from defects in materials or workmanship.
Research Products Corporation’s exclusive obligation under this
warranty shall be to supply, without charge, a replacement for
any thermostat which is found to be defective within such five (5)
year period and which is returned, together with the date of
installation, no later than thirty (30) days after said five (5) year
period by you to either your original supplier or to Research
Products Corporation, Madison, Wisconsin 53701.
THIS WARRANTY SHALL NOT OBLIGATE RESEARCH PRODUCTS
CORPORATION FOR ANY LABOR COSTS AND SHALL NOT APPLY
TO DEFECTS IN WORKMANSHIP OR MATERIALS FURNISHED BY
YOUR INSTALLER AS CONTRASTED TO DEFECTS IN THE
THERMOSTAT ITSELF.
IMPLIED WARRANTIES OF MERCHANTABILITY OF FITNESS FOR
A PARTICULAR PURPOSE SHALL BE LIMITED IN DURATION TO
THE AFORESAID FIVE YEAR PERIOD. RESEARCH PRODUCTS
CORPORATION’S LIABILITY FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES, OTHER THAN DAMAGES FOR
PERSONAL INJURIES, RESULTING FROM ANY BREACH OF THE
AFORESAID IMPLIED WARRANTIES OR THE ABOVE LIMITED
WARRANTY IS EXPRESSLY EXCLUDED. THIS LIMITED
WARRANTY IS VOID IF DEFECT(S) RESULT FROM FAILURE TO
HAVE THIS THERMOSTAT INSTALLED BY A QUALIFIED HEATING
AND AIR CONDITIONING CONTRACTOR. IF THE LIMITED
WARRANTY IS VOID DUE TO FAILURE TO USE A QUALIFIED
CONTRACTOR, ALL DISCLAIMERS OF IMPLIED WARRANTIES
SHALL BE EFFECTIVE UPON INSTALLATION.
Some states do not allow limitations on how long an implied
warranty lasts or the exclusion or limitation of incidental or
consequential damages, so the above exclusions or limitations
may not apply to you.
This warranty gives you specific legal rights and you may also
have other rights which vary from state to state.
This equipment if installed in strict accordance with the
manufacturer’s instructions, complies with the limits for a Class B
computing device pursuant to Subpart J of Part 15 of FCC Rules.
WARRANTY
Please… Take a few minutes to visit us on-line at www.aprilaire.com
to register your Aprilaire product.
If you do not have on-line access, please mail a postcard with your name, address,
phone number, product purchased and date of purchase to:
Research Products Corporation
P.O. BOX 1467
Madison, WI 53701
WARRANTY REGISTRATION
Thank you!
Your Warranty Registration information will not be sold or shared outside of this company.
21

10006197 11.07 997-040100-3
B2203357E Printed in U.S.A.
RESEARCH PRODUCTS CORPORATION
P.O. BOX 1467 • MADISON,WI 53701-1467