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Table of Contents
- 1 Table of Contents
- 2 Outdoor Temperature Sensor (Optional)
- 3 Thermostat Mounting
- 4 Power & Reset Options
- 5 Wiring Terminal
- 6 Wiring Diagrams
- 7 Setup & Testing
- 8 System Setup Instructions
- 9 System Test Mode
- 10 Quick Reference to Controls & Display
- 11 Thermostat Features
- 12 Troubleshooting
- 13 Specifications
- Download this manual
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Owner's Manual
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Summary of Contents for Aprilaire 8476
- Page 1 Model 8476 Thermostat with Event-Based Air Cleaning ™ Safety & Installation Instructions READ AND SAVE THESE INSTRUCTIONS...
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Page 2: Table Of Contents
TABlE Of CONTENTS INSTAllATION INSTAllATION INSTAllATION lOCATION RECOMMENDATIONS Installation location recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Thermostat should be mounted: Do not mount thermostat: Outdoor temperature sensor (optional) . -
Page 3: Outdoor Temperature Sensor (Optional)
INSTAllATION INSTAllATION OUTDOOR TEMpERATURE SENSOR (OpTIONAl) THERMOSTAT MOUNTINg pOwER & RESET OpTIONS Outdoor temperature can be measured by attaching an • Install on side of building out of direct sunlight The thermostat is dual power. It can either be AC or 8052 sensor to the S1 and S2 terminals . -
Page 4: Wiring Terminal
INSTAllATION INSTAllATION wIRINg TERMINAl wIRINg – SINglE TRANSfORMER (USE wIRINg – TwO TRANSfORMERS (REMOVE JUMpER wIRE) fOR HEAT/COOl SYSTEM JUMpER wIRE) fOR HEAT/COOl SYSTEM wire specifications RC – 24 VAC supply cooling* R – 24 VAC supply heating* 18-24 gauge thermostat wire w –... -
Page 5: Setup & Testing
INSTAllATION SETUp & TESTINg wIRINg – SINglE TRANSfORMER (USE wIRINg – TwO TRANSfORMERS (REMOVE SYSTEM SETUp INSTRUCTIONS JUMpER wIRE) fOR HEAT pUMp SYSTEM JUMpER wIRE) fOR HEAT pUMp SYSTEM The following instructions show how to enter the system setup menu and change settings . The table on the following pages lists the settings and their details. -
Page 6: System Setup Instructions
SYSTEM SETUp INSTRUCTIONS (CONTINUED) (CONTINUED) The Model 8476 thermostat has the option of being used in heat pump or heat/cool systems. Switch SW1 located System setting Setting range, default in bold on the back of the thermostat’s face is used to select this. System setting number 00 will only be shown on these models to display the position of SW1 . - Page 7 SETUp & TESTINg SETUp & TESTINg SYSTEM SETUp INSTRUCTIONS SYSTEM SETUp INSTRUCTIONS (CONTINUED) (CONTINUED) System setting Setting range, default in bold System setting Setting range, default in bold 1°f (0.5°C) 16 Low Balance Pt. (heat pump only) 20°f (–7°C) 09 1st stage differential 1°F to 4°F (0.5°C to 2°C) System setting 05 must be enabled 1°F to 35°F (–17°C to 1°C) or “OFF”...
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Page 8: System Test Mode
SETUp & TESTINg SETUp & TESTINg SYSTEM TEST MODE SYSTEM TEST MODE (CONTINUED) The system test mode is used to test a system after installation . The outputs of the thermostat can be manually How to enter the system test menu press to turn on the output (01) . - Page 9 SETUp & TESTINg SETUp & TESTINg Test steps for Heat/Cool Test steps for Heat pump System Setting Display (Output) System Setting Display (Output) 01 AUX 02 AUX Step Key Input Step Key Input HEATINg HEATINg COOlINg COOlINg fAN ON HEATINg HEATINg COOl/HEAT COOl/HEAT...
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Page 10: Quick Reference To Controls & Display
QUICK REfERENCE TO CONTROlS & DISplAY THERMOSTAT fEATURES • Event-Based Air Cleaning. ™ CURRENT INDOOR TEMPERATURE CURRENT TIME OUTDOOR TEMPERATURE (OPTIONAL) • Large, clear, backlit display is easy to read – even in the dark. SYSTEM MODE SETTING • Displays room temperature, temperature setting, and optional outdoor temperature. TEMPERATURE SETTING •... -
Page 11: Troubleshooting
TROUBlESHOOTINg TROUBlESHOOTINg DISplAY IS BlANK HEATINg SYSTEM DOES NOT RESpOND COOlINg SYSTEM DOES NOT RESpOND HEAT/COOl BOTH ON AT SAME TIME (“HEATINg” AppEARS ON SCREEN) (“COOlINg” AppEARS ON SCREEN) • Check SW1 (Equipment Type), to make sure it is set •... -
Page 12: Specifications
SpECIfICATIONS SpECIfICATIONS Environment Thermal Operating: 32° to 120°F (0° to 48.9°C) Outdoor temperature sensor Maximum distance: 300 feet Temperature Shipping: -30° to 140°F (-34.4° to 60°C) Room temperature measurement Display range: 32° to 99°F (0° to 40°C) Relative humidity Operating: 5% to 90% R.H. (non-condensing) Outdoor temperature measurement Display range: -20°... - Page 13 P.O. Box 1467 • Madison, WI 53701-1467 • Phone: 800/334-6011 • Fax: 608/257-4357 www.aprilairepartners.com 61000893 12 .11 Patent Pending B2205693A © 2011 Aprilaire – A division of Research Products Corporation...
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