Instruction/ maintenance manual of the product 8620 Aprilaire
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READ AND SAVE THESE INSTRUCTIONS Safety & Installation Instructions T ABLE OF CONTENTS Installation location recommendations ............. 2 Outdoor temperature sensor (included) ............. 2 Remote temperature sensor (optional) ............. 3 Thermostat mounting .
2 3 INST ALLA TION INST ALLA TION LOCA TION RECOMMENDA TIONS Thermostat should be mounted: • On an interior wall, in a frequently occupied space. • Approximately 5‘ above floor . • At least 18” from outside wall. • Thermostat can be mounted to a vertical junction box.
4 5 WIRING TERMINAL Wire specifications: 18-24 gauge thermostat wire Installation notes: • Ensure power at the HVAC equipment is off. • Loosen screw terminals, insert stripped wire and re-tighten. • Push the excess wire back into the opening and plug the wall opening to prevent drafts.
6 7 SETUP & TESTING INST ALLER SETUP MENU CHANGE SYSTEM SETTINGS HOW TO ENTER THE INST ALLER SETUP MENU AND SELECT EQUIPMENT TO SETUP: In the Installer Setup, HVAC or Indoor Air Quality setup can be selected.
8 9 System setting Description Factory default setting (bold) and setting range 19. Fourth Stage Differential 4th stage differential. 1°F (0.5°C) 1°F to 9°F (0.5°C to 4.5°C) 20. Heat Blast Enables the Heat Blast feature. Disable Enable 21. Blast Offset Amount of heating when Heat Blast is initiated.
10 11 SETUP & TESTING Dehumidifier System Settings T able Note: Dehumidifier control can only be set to whole home if ventilation and humidification are not installed. System setting Description Factory default setting (bold) and setting range Dehumidifier Control Selects method of dehumidification.
12 13 SETUP & TESTING V entilation System Settings T able (continued) System setting Description Factory default setting (bold) and setting range Number of Bedrooms Selects the number of bedrooms to be used for the ASHRAE calculation. (Only available if fresh air setup is set to ASHRAE.
14 15 SYSTEM TEST MENU (CONTINUED) While the equipment test is active the corresponding test information will be shown. Press [NEXT] to accept the selection and proceed to the next test selection.
16 17 Heat / Cool Cooling Equipment T est W W2 Y Y2 G 1st Stage T est ON ON 2nd Stage T est ON ON ON Heat Pump Cooling Equipment T est W W2 Y Y2 O/B set to G O B 1st Stage T est ON ON ON 2nd Stage T est ON ON ON ON Note: System Variable 31, O/B operation selects O or B.
18 19 TROUBLESHOOTING DISPLA Y IS BLANK • Check circuit breaker and reset if necessary. • Make sure power switch at heating & cooling system is on. • Make sure furnace door is closed securely. • If thermostat is battery powered, make sure fresh AA alkaline batteries are correctly installed.
20 P.O. Box 1467 • Madison, WI 53701-1467 • Phone: 800/334-6011 • Fax: 608/257-4357 www.aprilairepartners.com 10009857 4.12 B2205748A U.S. Patent Number 8,146,376 (and other patents pending) © .
An important point after buying a device Aprilaire 8620 (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 8620 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 8620 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Aprilaire 8620 you will learn all the available features of the product, as well as information on its operation. The information that you get Aprilaire 8620 will certainly help you make a decision on the purchase.
If you already are a holder of Aprilaire 8620, 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 8620.
However, one of the most important roles played by the user manual is to help in solving problems with Aprilaire 8620. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Aprilaire 8620 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
