Instruction/ maintenance manual of the product 8353 Aprilaire
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1 Installation Guide IMPORT ANT SAFETY INFORMA TION WARNING: • Always turn off power at the main power source by unscrewing fuse or switching circuit breaker to the off position before installing, removing, cleaning, or servicing thermostat. • Read all of the information in this manual before installing or programming this thermostat.
Features • Four setpoints for weekday programming—two setpoints for weekend comfort. • T wo “AA” ENERGIZER brand batteries retain program memory, even during power outages. • Low battery indicator . • Fahrenheit/Celsius display option. • Programmable from 45°F (4°C) to 90°F (32°C).
Figure 1 Installing the Model 8353 Thermostat NOTE: For new installations, mount thermostat on inside wall, 4-5 feet above the floor . Do not install behind a door , in a corner , near air vents, in direct sunlight, or near any heat or steam generating fixtures.
Figure 3 7. Drill the marked holes using a 3/16” drill bit. Note: Enclosed plastic anchors do not require a drilled hole for drywall. 8. T ap plastic anchors into the wall. 9. Align base with plastic anchors and feed wires through opening. See Fig 4.
13. Install two “AA” ENERGIZER brand batteries or equivalent into battery compartment. Be sure to match positive (+) ends of batteries with positive (+) battery terminals in the battery compartment. The display will show as follows: 14. Replace cover onto thermostat by snapping into place.
5. Press 6. Press T o change T emperature Differential* *The T emperature Differential is Factory preset at 1°. This means that whenever the room temperature changes by one full degree from the temperature setting, the system will turn on. If the system turns on too often, increase the temperature differential.
4. Press SET . 5. Press or to change MORN temperature. 6. Repeat Steps 2-5 for DA Y , EVE, and NITE. 7. Press SET to finish. 8. Shift COOL-OFF-HEA T switch to HEA T position. 9. Repeat steps 2-7 to program HEA T (winter) settings. NOTE: Both summer and winter programs use the same time settings.
T emporary Program Override T o temporarily increase or decrease temperature Press or The thermostat will automatically return to the program at the next scheduled setting change or after four hours. Manual Operation Manual operation allows continuous override of the program settings.
T o T est Thermostat WARNING: DO NOT SHORT (JUMPER) ACROSS TERMINALS OF GAS V ALVE OR SYSTEM CONTROL TO TEST OPERA TION. THIS WILL DAM- AGE THE THERMOST A T AND VOID YOUR WARRANTY . CAUTION: Do not switch system to cool if the temperature is below 50°F (10°C).
T roubleshooting Symptom Remedy Thermostat does not turn Check Wiring on system (see INST ALLA TION). Check fuse. Replace with 2 amp Slo-Blo fuse if fuse has opened. Thermostat turns on and off too Increase T emperature Differential frequently . (see PROGRAMMING).
Wiring Diagrams The following is just a sample of the most common types of HV AC sys- tems. Refer to your systems installation manual for wiring information.
Limited W arranty Y our Resear ch 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.
An important point after buying a device Aprilaire 8353 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Aprilaire 8353 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Aprilaire 8353 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Aprilaire 8353 you will learn all the available features of the product, as well as information on its operation. The information that you get Aprilaire 8353 will certainly help you make a decision on the purchase.
If you already are a holder of Aprilaire 8353, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Aprilaire 8353.
However, one of the most important roles played by the user manual is to help in solving problems with Aprilaire 8353. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Aprilaire 8353 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
