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Aprilaire 8620 manual

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Table of contents for the manual

  • Page 1

    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 ........................... 3 Power & reset options ......................[...]

  • Page 2

    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. Do not mount thermostat: • Behind doors, in corners or other dead a[...]

  • Page 3

    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. INST ALLA TION I1 & I 2 – Indoor Air Quality contro[...]

  • Page 4

    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. If Indoor Air Quality setup is selected, the user can then select to set up Air Cleaning, Humidification, Dehumidification or V entilatio[...]

  • Page 5

    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. 3°F (2°C) 3°F to 5°F (2°C to 3°C) 22.[...]

  • Page 6

    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.(If set to none, no other dehumidifier setting[...]

  • Page 7

    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.) 3 Bedrooms 1 to 6 Bedrooms Number of Occupants Selects th[...]

  • Page 8

    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. TEMPERA TURE EQUIPMENT TEST SELECTION HUMIDITY OUTDOOR TEMPERA TURE OUTPUT STA TUS TEST THA T IS ACTIVE SETUP & TESTING Each equipment test will begi[...]

  • Page 9

    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. Fan Equipment T est W W2 Y Y2 G ON Humidification Equipment T est I1 / I 2 G ON[...]

  • Page 10

    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. HEA TING SYSTEM DOES NOT RESPOND (“HEA TING?[...]

  • Page 11

    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) © 2012 Aprilaire – A division of Research Products Corporation Thermal Outdoor & Remote temperature sensor Maximum distance: 300 feet Room tempera[...]