AprilAire 8535 - Manuals

– 3 – Getting Familiar with the Aprilaire Thermostat (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 Di...

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 thetemperature sensor. • Do not place anything which can give off warm or cool air, such as ca...

Operating The Aprilaire Thermostat 1. Select the mode of operation by repeatedly pressing the MODE button until the desired mode appears on the display (“ E ht ” = Emergency Heat – Models 8536 and 8537 only). The heating and cooling system may be turned off by selecting the “ OFF ” mode. Do not set ...

Changing The Current Temperature Setting 1. Press and release either the DECREASE button or INCREASE button to see the current temperature setting. The setting, a Thermometer icon and a Double Arrowhead icon will appear (see Figures 2 and 3 on pages 5 and 6). 2. Change the temperature setting: OPTIO...

– 10 – Optional Feature – Locking The Keypad If tampering with the thermostat is expected and unwanted, the keypad can be locked by changing the position of the Keypad Lock DIP switch (switch no. 4) from the factory set OFF position to ON . The DIP switches are located inside the thermostat on the c...

– 11 – Setting High And Low Balance Points (Models 8536 & 8537 only) High and low balance points can only be accessed if the Aprilaire Model 8041 Remote Outdoor Sensor has been installed. To check if this optional accessory has been installed, press the Outdoor button. If a temperature appears, ...

– 12 – After accessing a balance point, it can be changed by pressing the DECREASE button or INCREASE button. This should only be done after consulting with a qualified contractor. Improperly set balance points can result in increased energy expenses and possible equipment damage. In Case Of Power F...

– 13 – 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,...