Aprilaire 8533 User manual
ELECTRONICTHERMOSTAT
®
Owner’sManual
MODELS
8533, 8534 & 8538
Digital Heat/Cool Thermostats
110-964B 7/12/01 9:14 AM Page 1
OWNER’S MANUAL – TABLE OF CONTENTS
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Getting Familiar With The Aprilaire®Thermostat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
• Temperature Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
• Mode Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
• Temperature Settings – Day/Night Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
• Fan Button. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
• Outdoor Button. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Setting Up The Aprilaire Thermostat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Operating The Aprilaire Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Changing The Current Temperature Setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Optional Feature – Locking The Keypad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
In Case Of Power Failure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Limited Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
© Research Products Corporation 2001
110-964B 7/12/01 9:14 AM Page 2
– 1 –
IMPORTANT: READ ALL INSTRUCTIONS THOROUGHLY
Introduction
Thank you for your recent Aprilaire®Electronic Thermostat purchase. We sincerely
appreciate your business and are pleased to add your name to our growing list of customers.
With this purchase, you have invested in the highest quality equipment currently available.
Please be assured that in addition to product quality, we are committed to total product
performance and complete customer satisfaction.
Now, please take a few minutes to familiarize yourself with your new Aprilaire Thermostat. In
order to take advantage of all the benefits of your new thermostat, it is important that you
understand how to operate it.
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Fan
Mode
Day/Night
Outdoor
Press to raise and lower set point. Press both at the
same time to switch between ˚F and ˚C.Press and
release to view current set point.
Press to display
outdoor temperature
(w/optional Model 8041
Remote Outdoor
Sensor only).
Press to select
Heat/Cool/Auto/Off.
(Auto for Models 8534
& 8538 only)
Press for continuous
fan. Press again to
resume to auto fan.
Aprilaire
Digital Heat/Cool Thermostat
Fan icon displays during
continuous fan only.
Heat and Cool Mode
icons.Both displayed
during Auto Mode.
Flame flickers during
heat call and Snowflake
flashes during cool call.
Set-point icon displays
the active set point
(full sun = Day set
point, partial moon
= Night set point).
Press to change
set point to either
the Day or Night
preset value.
Temperature ˚F or ˚C.
Room temp. normally
displayed. Press
Outdoor button to
display outdoor temp.
(Model 8041 Remote
Outdoor Sensor
required).
Displays mode when
changing (Heat,Cool,
Off, and Auto).
(Auto for Models 8534
& 8538 only)
– 2 –
Figure 1 - Display and Button Description
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– 3 –
Getting Familiar with the AprilaireThermostat
(refer to Figure 1)
The LCD (Liquid Crystal Display) normally shows: the room temperature, the current mode of operation, if
the Day or Night temperature setting is being used, and if the system fan is set for continuous operation.
Temperature Display
Room temperature can be displayed in either degrees Fahrenheit or degrees Celsius. If the displayed
temperature seems abnormally high or low (example: 70˚F is equal to 21˚C), press the DECREASE
button and INCREASE button simultaneously to switch between ˚F and ˚C.
Mode Button
Three modes of operation are available for all the Heat/Cool thermostat models: Heat, Cool, and Off.
Additionally, with the Models 8534 and 8538, “AUtO” mode is available. The mode of operation indicates
how you want your heating and cooling equipment to operate. Press the MODE button until the desired
mode of operation shows on the display.
Temperature Settings - Day/Night Button
The thermostat stores four temperature settings in its memory, two for heating and two for cooling. The
two temperatures for each mode are called the Day setting ” “ (a sun icon appears on the display)
110-964B 7/12/01 9:14 AM Page 5
and the Night setting “ “ (a moon icon appears on the display). The Day setting is intended to be an
occupied or comfort setting and the Night setting is intended to be an unoccupied or energy savings
setting. For example the four settings stored in the memory of the thermostat might be as shown in
Table 1. Pressing the DAY/NIGHT button allows you to instantly change to a more economical setting
when leaving the house or going to bed, and to a comfort setting
when returning home or waking up. This thermostat is equipped
with accessory inputs which can be used to automatically
switch between day and night set points; contact your installing
contractor for more details.
Fan Button
The system fan will operate automatically during a heating or cooling cycle. If it is desired to run the fan
continuously, press the FAN button, and a Fan “ “ icon will appear on the display.
Outdoor Button
This button will be made functional when the optional Aprilaire Model 8041 Remote Outdoor Sensor has
been installed. It can then be used to find out the outdoor temperature from indoors. If the Model 8041
Remote Outdoor Sensor has not been installed, two dashes “– –” will appear on the display when this
button is pushed. – 4 –
MODE DAY NIGHT
Heat 68˚F 60˚F
Cool 78˚F 85˚F
Table 1 – Typical Set Point Values
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Setting Up The Aprilaire Thermostat
To ensure accurate temperature control, observe the following simple guidelines:
•When the thermostat is operating, close the cover to allow proper air circulation over the
temperature sensor.
•Do not place anything which can give off warm or cool air, such as candles or portable humidifiers,
near the thermostat.
1. Adjusting the Heat Temperature Settings. There are
two settings, the Day setting “ “ (a sun icon
appears on the display) and the Night setting “ “
(a partial moon icon appears on the display).
See Figure 2.
a. Press the MODE button repeatedly until HEAt
appears on the display.
b. Press the DAY/NIGHT button until the “ “ icon
(Day setting) appears on the display.
c. Use the DECREASE button and INCREASE
button to adjust the setting. – 5 –
DAY NIGHT
DAY NIGHT
Figure 2 - Adjust Heat Settings
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– 6 –
d. Press the DAY/NIGHT button until the “ “ icon (Night setting) appears on the display.
e. Use the DECREASE button and INCREASE button to adjust the setting.
2. Adjusting the Cool Temperature Settings. There are two
settings, the Day setting “ “ (a sun icon appears on
the display when this setting is being used) and the Night
setting “ “ (a partial moon icon appears on the display
when this setting is being used). See Figure 3.
a. Press the MODE button repeatedly until COOL
appears on the display.
b. Press the DAY/NIGHT button until the “ “ icon
(Day setting) appears on the display.
c. Use the DECREASE button and INCREASE
button to adjust the setting.
d. Press the DAY/NIGHT button until the “ “ icon (Night setting) appears on the display.
e. Use the DECREASE button and INCREASE button to adjust the setting.
DAY NIGHT
DAY NIGHT
Figure 3 - Adjust Cool Settings
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Operating The Aprilaire Thermostat
1. Select the mode of operation by repeatedly pressing the MODE button until the desired mode
appears on the display. The heating and cooling system may be turned off by selecting the “OFF”
mode. Do not set to the “OFF” mode during periods when freezing temperatures may occur.
• COOL: In the “COOL” mode a Snowflake “ “ icon appears on the display, which flashes
when the air conditioning is running.
• HEAT: In the “HEAt” mode a Flame “ “ icon appears on the display, which flickers when the
furnace is running.
• AUTO (Models 8534 and 8538 only): In the “AUtO” mode, the heating and cooling system will
operate in either the “HEAt” or “COOL” mode depending on which current setting the room
temperature is closest to. Note that both the Snowflake “ “ and Flame “ “ icons
appear on the display.
– 7 –
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– 8 –
2. Select the temperature setting to be used by pressing the DAY/NIGHT button until the
desired previously stored temperature setting (Day or Night) appears on the display. Use the
DECREASE button and INCREASE button to change the temperature if desired (NOTE
that if changed, the new set point will be permanently stored in memory - see CHANGING THE
CURRENT TEMPERATURE SETTING).
3. After approximately 5 seconds the thermostat will return to the normal display.
Note: This thermostat utilizes time delays to protect the heating and cooling equipment. If the
equipment does not shut off or turn on immediately when the temperature setting has been
changed, it may be due to the built-in time delays (4 minutes max.).
4. Press the Fan button, if it is desired, to run the fan continuously. A Fan “ “ icon will appear
on the display when the fan is set to operate continuously.
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