Aprilaire 8348 Thermostat User Manual

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Electronic  
Thermostats  
MODEL 8344 HEAT/COOL NON-PROGRAMMABLE  
MODEL 8346 HEAT PUMP NON-PROGRAMMABLE  
MODEL 8348 HEAT/COOL MULTI-STAGE NON-PROGRAMMABLE  
MODEL 8363 HEAT/COOL 5/2 DAY PROGRAMMABLE  
MODEL 8365 HEAT PUMP 5/2 DAY PROGRAMMABLE  
MODEL 8366 HEAT/COOL MULTI-STAGE 5/2 DAY PROGRAMMABLE  
Operating Instructions  
READ AND SAVE THESE INSTRUCTIONS  
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TABLE OF CONTENTS  
PRODUCT FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2  
GETTING FAMILIAR WITH YOUR APRILAIRE THERMOSTAT . . . . . . . . . . . . . . .3  
OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4  
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4  
Temporarily Raise and Lower Temperature . . . . . . . . . . . . . . . . . . . . . . . . .4  
Fan Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
Programming Your Thermostat (Programmable Models Only) . . . . . . . .5  
•
•
•
•
•
Set Current Time and Day . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
Program for Heating and Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
Program Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6  
To Change the Heating Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7  
To Change the Cooling Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7  
Hold Temperature/Vacation (Programmable Models Only) . . . . . . . . . . .7  
Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8  
Cleaning the Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9  
SET UP INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9  
To Clear the “Change Water Panel” or “Change Filter” Indicator . . . . .9  
To Change °F to °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9  
To Change Differential Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10  
To Change Temperature Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11  
To Change the Water Panel Indicator Setting . . . . . . . . . . . . . . . . . . . . . .12  
To Set Humidifier Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12  
To Change the Air Filter Indicator Setting . . . . . . . . . . . . . . . . . . . . . . . . . .13  
To Set Number of Weekend Events (Programmable Models Only) . . .14  
LIMITED WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15  
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PRODUCT FEATURES  
•
•
Large, easy to read, backlit display. • High temperature protection  
Simple programming with 4 events  
(Models 8344, 8348, 8363 and 8366).  
for weekdays and selectable 2 or 4 • Temporary and permanent  
events on the weekend.  
(vacation) hold.  
•
•
Pre-programmed with ENERGYSTAR‚  
recommended settings.  
Set point and room temperature  
are displayed simultaneously.  
Freeze protection.  
Low battery indicator.  
• Change Water Panel indicator.  
• Change air filter indicator.  
• Fahrenheit/Celsius selectable.  
•
•
Adjustable differential.  
Adjustable offset.  
•
•
®
ENERGYSTAR PROGRAM INFORMATION (Programmable Models Only)  
About half of all energy used by households goes to heating and cooling the  
®
home. If you’ve selected 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 Electronic Thermostat Models 8363, 8365 & 8366 have  
®
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, taking advantage of the times that a home is  
unoccupied or the occupants are asleep, an ENERGYSTAR thermostat can  
reduce heating and cooling bills by as much as 30%. 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.  
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GETTING FAMILIAR WITH YOUR APRILAIRE THERMOSTAT  
See Figure 1 for a description of the thermostat and controls.  
Figure 1  
PROGRAMMABLE MODELS ONLY  
Auxiliary Heat Light  
Models 8346 &  
365 only)  
Check Equipment Light  
(Models 8346 & 8365 only)  
(
Large, Backlit Display  
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AUX  
CHECK  
Set Time –  
Hour, AM/PM,  
Minute, Day  
WAKE  
F
C
CHANGE FILTER  
WATER PANEL  
LOW BATTERY  
HOLD  
Press to Hold  
CURRENT TIME  
LEAVE  
RETURN  
SLEEP  
HOLD  
temperature.  
Press again to  
Resume program  
OVERRIDE ROOM DONE SET  
Events –  
Temperature  
and Time  
AM E-HEAT  
COOL  
[
Advance Time]  
PM  
[Resume]  
MO TU WE TH FR SA SU  
PROGRAM  
MODE  
Mode Switch –  
Cool, Off, Heat,  
E-Heat (Emergency  
Heat for Models  
8346 & 8365 only)  
[
Advance Program]  
LIGHT  
Use to change  
time and  
temperature  
values when  
programming  
or setting the  
time of day.  
FAN  
Cool Off Heat E-Heat  
• • •  
ADJUST  
Auto On  
•
Use to raise or  
lower the heating  
or cooling set  
point in normal  
operation.  
Fan Switch –  
Auto” operates the fan with  
heating and cooling equipment.  
On” operates the fan continuously.  
Activates  
Back Light  
“
“
See Figure 2 for the display.  
Figure 2  
PROGRAMMABLE MODELS ONLY  
Current Room  
Temperature  
Fahrenheit  
or Celsius  
Program  
Done  
Change Filter  
Indicator  
Change Water  
WAKE  
LEAVE  
RETURN  
SLEEP  
CHANGE FILTER  
WATER PANEL  
LOW BATTERY  
HOLD  
F
C
Panel Indicator  
Event  
Change Battery  
Indicator  
Hold Temperature  
Temporary  
Override  
OVERRIDE ROOM DONE SET  
AM E-HEAT  
COOL  
MO TU WE TH FR SA SU  
Day of Week  
Current  
Time  
PM  
Current  
Temperature  
Setting  
Cool, Heat, E-Heat  
Emergency Heat  
Models 8346 & 8365 only)  
(
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OPERATING INSTRUCTIONS  
OPERATING MODES  
Your thermostat has three operating modes, COOL, OFF and HEAT. Heat pump  
Models 8346 & 8365 have an additional EMERGENCY HEAT mode (E-HEAT on  
display).  
COOL  
HEAT  
In the COOL mode, the thermostat  
will control the cooling system and  
maintain your cooling set point.  
In HEAT mode, the thermostat will  
control the heating system.  
NOTE: There is a 4-minute delay  
after a heating call is completed on  
heat pump models 8346 & 8365. This  
is to protect the equipment’s  
NOTE: There is a 4-minute delay  
after a cooling call is completed.  
This is to protect the equipment’s  
compressor from short cycling.  
compressor from short cycling.  
OFF  
E-HEAT (MODELS 8346 & 8365 ONLY)  
In the OFF mode, the thermostat  
will not operate the heating or  
cooling equipment. The FAN switch  
can be placed in the ON position to  
operate the fan continuously.  
In E-HEAT mode, the thermostat will  
activate the emergency heat with  
any heat call. (Note-the AUX light in  
the upper left hand corner of the  
thermostat will illuminate any time  
there is a call for Emergency Heat  
or Auxiliary Heat. )  
CAUTION: Do not set to OFF  
mode during periods when freezing  
temperatures may occur.  
TEMPORARILY RAISE AND LOWER TEMPERATURE –  
MODELS 8344, 8346 & 8348  
1. Press ꢀꢁto ADJUST the temperature.  
TEMPORARILY RAISE AND LOWER TEMPERATURE –  
MODELS 8363, 8365 & 8366  
1
. Press ꢀꢁto ADJUST the temperature. The “OVERRIDE” icon will appear.  
The new temperature setting will hold until the next programmed event.  
2. Press HOLD twice to resume program.  
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FAN OPERATION  
The thermostat has two settings for fan operation, AUTO and ON.  
AUTO  
ON  
In the AUTO setting, the fan  
operates only when the heating or  
cooling equipment is on.  
In the ON setting, the fan will  
operate continuously.  
PROGRAMMING YOUR THERMOSTAT – MODELS 8363, 8365 & 8366  
SET CURRENT TIME AND DAY  
1
. Press CURRENT TIME and use the ꢀꢁto ADJUST the current hour.  
IMPORTANT: ADJUST HOUR TO APPROPRIATE AM/PM SETTING.  
NOTE: The flashing information is being adjusted.  
2. Press CURRENT TIME again to advance to and ADJUST the current minutes.  
3
4
. Press CURRENT TIME again to advance to and ADJUST the current day.  
. Press CURRENT TIME again to finish. “DONE” will appear on the display  
when you have completed setting the time and day.  
PROGRAM FOR HEATING AND COOLING  
As part of the ENERGYSTAR program, your thermostat has been  
pre-programmed with the following times and temperatures, which can be  
modified as desired (see page 7).  
ENERGYSTAR SETTINGS  
Event  
Wake  
Leave  
Return  
Sleep  
Temperature  
Setting  
Time Schedule  
Weekday  
Weekend  
Heat = 70°F  
Cool = 78°F  
6:00 AM  
8:00 AM  
5:00 PM  
10:00 PM  
6:00 AM  
Heat = 62°F  
Cool = 85°F  
8:00 AM  
5:00 PM  
10:00 PM  
Heat = 70°F  
Cool = 78°F  
Heat = 62°F  
Cool = 82°F  
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PROGRAM EVENTS  
Your thermostat has 5/2 (5 weekdays and 2 weekend days) programming  
functionality, which allows the user to set four events for the weekdays  
(
Monday through Friday) and two or four events for the weekend (Saturday  
and Sunday). The events are WAKE, LEAVE, RETURN and SLEEP. If you are  
normally home on the weekend, you can set up your thermostat to use only  
2
events (WAKE and SLEEP) on Saturday and Sunday.  
WAKE is the time and temperature setting you desire when you wake in the  
morning. The event should include extra time for the heating and cooling  
equipment to heat or cool the house to a comfort level prior to getting out of bed.  
NOTE: It will take some time for your heating or cooling system to reach  
the desired temperature when returning from setback. Therefore, it is  
suggested you set your program time before the actual time you want  
your home to reach the desired temperature. For example, if you get up at  
7:00 AM and have a 6 degree setback, set your WAKE event to 6:00 AM  
to be sure the desired temperature is reached by 7:00 AM.  
LEAVE is the time and temperature setting for the daytime hours you are  
away from the house and wish to reduce the heating or increase the cooling  
temperature for energy savings.  
RETURN is the time and temperature setting for the evening hours.  
SLEEP is the time and temperature setting for your sleep hours.  
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TO CHANGE THE HEATING PROGRAM  
WAKE – WEEKDAY  
RETURN – WEEKDAY  
1
. Move the MODE switch to the  
HEAT position.  
6. Press the PROGRAM button and  
then ꢀꢁto ADJUST the  
weekday RETURN time.  
7. Press the PROGRAM button again  
to advance to and adjust the  
RETURN temperature.  
2
. Press the PROGRAM button and  
then ꢀꢁto ADJUST the  
weekday WAKE time.  
3
. Press the PROGRAM button again  
to advance to and adjust the  
WAKE temperature.  
SLEEP – WEEKDAY  
8
. Press the PROGRAM button and  
then ꢀꢁto ADJUST the  
weekday SLEEP time.  
LEAVE – WEEKDAY  
4
. Press the PROGRAM button and  
then ꢀꢁto ADJUST the  
weekday LEAVE time.  
9. Press the PROGRAM button again  
to advance to and adjust the  
SLEEP temperature.  
5
. Press the PROGRAM button again  
to advance to and adjust the  
LEAVE temperature.  
WEEKEND – 2 or 4 Events  
(See page 14)  
10. Repeat the weekday steps for  
the weekend events.  
1
1. Press PROGRAM again to exit  
programming. DONE will appear  
on the display.  
TO CHANGE THE COOLING PROGRAM  
1. Move the MODE switch to the COOL position.  
2. Repeat the steps above to Program for cooling.  
HOLD TEMPERATURE / VACATION – MODELS 8363, 8365 & 8366  
When the thermostat is in HOLD the set point will be maintained until the  
HOLD/Resume button is pressed.  
1
. Press the HOLD button. The “HOLD” icon will appear on the display and  
the time and day will disappear.  
2
. Press the ꢀꢁto ADJUST the temperature.  
. Pressing HOLD again will resume program.  
3
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BATTERY REPLACEMENT  
NOTE: New batteries must be replaced within one minute after removal of  
old batteries. If more than one minute elapses the programmed settings will  
be lost and revert to the factory settings. See Figures 3 and 4 for cover  
removal and battery orientation.  
Replace batteries once per year or when “LOW BATTERY” appears on the  
display. This will keep the thermostat working properly. Replace with two  
new AA alkaline batteries.  
1. Move FAN switch to AUTO setting.  
5. Replace housing.  
2
. Move MODE switch to OFF  
position.  
6. Return FAN and MODE switch  
to desired position.  
3
. Remove housing by gently pulling  
the housing from the base.  
See Figure 3.  
7. Check to see the correct time  
and day appear on the display.  
If more than one minute has  
elapsed, the thermostat will  
require re-programming.  
4. Insert new batteries as shown.  
Figure 3 – Cover Removal  
Figure 4 – Battery Orientation  
-
+ -  
+
AA Alkaline Battery  
Pull Here to Open  
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CLEANING THE THERMOSTAT  
If the surface of the thermostat becomes dirty it can be cleaned with plain  
water or a non-abrasive household cleaner 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 on to a soft cloth and wipe the surface of the thermostat.  
SET UP INSTRUCTIONS  
TO CLEAR THE “CHANGE WATER PANEL” OR  
“CHANGE FILTER” INDICATOR  
Your thermostat is equipped with indicators on the display to notify you when  
it is necessary to change the systems filter and humidifier Water Panel.  
1. Place the MODE switch in the OFF mode.  
2
. Push and hold both of the temperature ADJUST buttons simultaneously  
(
ꢀand ꢁ) until the alert clears from the display.  
3. Thermostat will clear the change Water Panel or change air filter indicator.  
MODE  
Press and Hold  
Simultaneously for  
Three (3) Seconds  
Cool Off Heat  
• •  
ADJUST  
TO CHANGE °F TO °C  
The Aprilaire Thermostat is capable of displaying temperatures in  
Fahrenheit or Celsius.  
1. Place the MODE switch in the OFF mode.  
2
. Push and hold both of the temperature ADJUST buttons simultaneously  
(ꢀand ꢁ) until “ROOM” and “OFF” are no longer displayed.  
MODE  
Press and Hold  
Simultaneously for  
Three (3) Seconds  
Cool Off Heat  
• •  
ADJUST  
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3
. Display will show only the room temperature and scale. Use the ꢀor  
button to toggle between Fahrenheit (F) or Celsius (C).  
ꢁ
4. Press the LIGHT button repeatedly until “DONE” is displayed.  
F
C
LIGHT  
ADJUST  
TO CHANGE DIFFERENTIAL SETTING (d1)  
The Aprilaire Thermostat is capable of adjusting the differential to change  
how often the heating and cooling equipment will cycle on and off.  
1. Place the MODE switch in the OFF mode.  
2
. Push and hold both of the temperature ADJUST buttons simultaneously  
(
ꢀand ꢁ) until “ROOM” and “OFF” are no longer displayed.  
3. Press the LIGHT button until “d1” is displayed.  
MODE  
Press and Hold  
Simultaneously  
LIGHT  
Cool Off Heat  
• •  
ADJUST  
4
. Thermostat will display “d1” and a number 1, 2 or 3. The number indicates  
the degrees from setpoint before a call for heating or cooling is made.  
5. Use the ꢀꢁbuttons to select 1, 2 or 3 degrees.  
6. Press the LIGHT button repeatedly until “DONE” is displayed.  
OR  
LIGHT  
ADJUST  
ADJUST  
TO CHANGE SECOND STAGE DIFFERENTIAL SETTING (d2)  
MODELS 8348 & 8366 ONLY)  
(
This setting controls how far from the first stage differential setting the  
temperature will be allowed to fall/rise before initiating second stage.  
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1
2
. Place the MODE switch in the OFF mode.  
. Push and hold both of the temperature ADJUST buttons simultaneously  
and ) until “ROOM” and “OFF” are no longer displayed.  
. Press the LIGHT button until “d2” is displayed.  
(ꢀ  
ꢁ
3
MODE  
Press and Hold  
Simultaneously  
LIGHT  
Cool Off Heat  
• •  
ADJUST  
4
. Thermostat will display “d2” and a number 1, 2 or 3. The number indicates  
the degrees from the first stage differential setting (d1) before a call for  
heating or cooling is made.  
5. Use the ꢀꢁbuttons to select 1, 2 or 3 degrees.  
6. Press the LIGHT button repeatedly until “DONE” is displayed.  
OR  
LIGHT  
ADJUST  
ADJUST  
TO CHANGE TEMPERATURE OFFSET  
Aprilaire thermostats are factory tested and calibrated within 1° Fahrenheit.  
However, it may be desirable to adjust the reading of the thermostat to  
coincide with other temperature measuring devices.  
1
2
. Place the MODE switch in the OFF mode.  
. Push and hold both of the temperature ADJUST buttons simultaneously  
and ) until “ROOM” and “OFF” are no longer displayed.  
. Press the LIGHT button until “OF” is displayed.  
(ꢀ  
ꢁ
3
MODE  
Press and Hold  
Simultaneously for  
Three (3) Seconds  
LIGHT  
Cool Off Heat  
• •  
ADJUST  
4
. Press the ꢀand ꢁbuttons to raise or lower the displayed  
temperature. The thermostat will indicate the number of degrees  
above or below actual temperature of adjustment.  
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5. Press the LIGHT button repeatedly until “DONE” is displayed.  
OR  
LIGHT  
ADJUST  
ADJUST  
TO CHANGE THE WATER PANEL INDICATOR SETTING  
The Aprilaire Thermostat is capable of indicating when the Water Panel of a  
humidifier should be changed.  
1
2
. Place the MODE switch in the OFF mode.  
. Push and hold both of the temperature ADJUST buttons simultaneously  
and ) until “ROOM” and “OFF” are no longer displayed.  
(ꢀ  
ꢁ
3. Press the LIGHT button several times until “CHANGE WATER PANEL” is  
displayed on the thermostat.  
MODE  
Press and Hold  
Simultaneously for  
Three (3) Seconds  
LIGHT  
Cool Off Heat  
• •  
ADJUST  
4
. Use the ꢀand ꢁbuttons to select between 1 to 12 or OFF. This is the  
number of months until the “CHANGE WATER PANEL” reminder will first  
be displayed. Subsequently, it will be displayed every 52 weeks.  
5. Press the LIGHT button repeatedly until “DONE” is displayed.  
CHANGE  
WATER PANEL  
CHANGE  
WATER PANEL  
LIGHT  
ADJUST  
TO SET HUMIDIFIER TYPE  
NOTE: This feature will only be displayed if the Water Panel Change value is  
not set to “OFF”.  
1
2
. Place the MODE switch in the OFF mode.  
. Push and hold both of the temperature ADJUST buttons simultaneously  
and ) until “ROOM” and “OFF” are no longer displayed.  
(ꢀ  
ꢁ
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3. Press the LIGHT button several times until “WATER PANEL” is displayed  
on the thermostat.  
4
. Use the  
ꢀor ꢁbutton to set this value to “1” if the home has an  
Aprilaire Model 400 whole house humidifier. The Water Panel in the  
Model 400 should be changed twice per season and this feature will  
cause the Water Panel Change Alert to appear on the display 90 days  
after the first alert. For example, if the Water Panel Change Alert value is  
set to show the first alert in October, then a second alert will appear in  
January. An alert will not be displayed again until the next October, and  
the cycle repeats.  
5
. Press the LIGHT button repeatedly, after the humidifier type value has  
been set, until “DONE” is displayed.  
WATER PANEL  
WATER PANEL  
LIGHT  
ADJUST  
TO CHANGE THE AIR FILTER INDICATOR SETTING  
The Aprilaire Thermostat is capable of indicating when the air filter should  
be changed.  
1
2
. Place the MODE switch in the OFF mode.  
. Push and hold both of the temperature ADJUST buttons simultaneously  
and ) until “ROOM” and “OFF” are no longer displayed.  
(ꢀ  
ꢁ
3. Press the LIGHT button several times until “CHANGE FILTER” is displayed  
on the thermostat.  
MODE  
Press and Hold  
Simultaneously for  
Three (3) Seconds  
LIGHT  
Cool Off Heat  
• •  
ADJUST  
4
. Use the ꢀand ꢁbuttons to select between 1, 3, 6, 12 or OFF  
(See TABLE 1). This is the number of months until the “CHANGE FILTER”  
reminder will be displayed.  
5. Press the LIGHT button repeatedly until “DONE” is displayed.  
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CHANGE FILTER  
CHANGE FILTER  
LIGHT  
ADJUST  
TABLE 1  
FILTER TYPE  
CHANGE FREQUENCY  
THERMOSTAT SETTING  
Disable the feature  
OFF  
Disposable Panel  
1 month  
3 months  
1
3
Washable Electrostatic  
Extended Media (Aprilaire)  
6-12 months  
6 or 12  
TO SET NUMBER OF WEEKEND EVENTS  
MODELS 8363, 8365 AND 8366 ONLY)  
(
Use this feature to set the number of events for the weekend program.  
®
The default value is 4 events (The ENERGYSTAR setting), which will result  
in the “LEAVE” and “RETURN” events to be used during programmed  
operation. If your schedule is such that the home or building is generally  
occupied during the weekends, switch to 2 events on the weekend. This  
will cause the “LEAVE” and “RETURN” events to be ignored during  
programmed operation.  
1
2
. Place the MODE switch in the OFF mode.  
. Push and hold both of the temperature ADJUST buttons simultaneously  
and ) until “ROOM” and “OFF” are no longer displayed.  
(ꢀ  
ꢁ
3. Press the LIGHT button several times until “WAKE, LEAVE, RETURN,  
SLEEP” is displayed on the thermostat.  
4. Press the ꢀor ꢁbuttons to toggle between the two selections.  
5. Press the LIGHT button when done. “DONE” will appear on the display  
and the thermostat will reset.  
WAKE  
SLEEP  
WAKE  
LEAVE  
RETURN  
SLEEP  
LIGHT  
SA SU  
SA SU  
ADJUST  
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LIMITED WARRANTY  
®
Your Research Products Corporation Aprilaire Thermostat unit is expressly  
warranted for two (2) years from date of installation to be free from defects in  
materials and 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 a two (2) year period and which is returned, together with the date of  
installation, no later than thirty (30) days after said two (2) 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 OR FITNESS FOR A PARTICULAR PURPOSE SHALL  
BE LIMITED IN DURATION TO THE AFORESAID TWO 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 exclusion  
or limitations may not apply to you.  
This warranty gives you specific legal rights and you my also have other rights which  
vary from state to state.  
P.O. BOX 1467 • MADISON, WI 53701-1467  
Products For Better Indoor Air Quality  
™
Form No. 5173 09.04  
B2202814A  
MADE IN USA  
© 2004 Research Products Corporation  
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