Aprilaire 8476W Safety & Installation Instructions Download Page 1 | Manualshive

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Model 8476W Thermostat

with Wi-Fi and

Event-Based

™

Air Cleaning

READ AND SAVE THESE INSTRUCTIONS

Safety &

Installation

Instructions

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Summary of Contents for 8476W

Page 1: ...Model 8476W Thermostat with Wi Fi and Event Based Air Cleaning READ AND SAVE THESE INSTRUCTIONS Safety Installation Instructions ...

Page 2: ... 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 air spaces In direct sunlight near lighting fixtures or other appliances that give off heat On an outside or unconditioned area wall In the flow of a supply register i...

Page 3: ...t vents and condensing lines Maximum wire length is 300 Do not route wires along 120 VAC lines Thermostat mounting 1 Remove the rear mounting plate from the thermostat 2 Pull wires through the opening on the back of the rear mounting plate 3 Position and level the mounting plate of the thermostat on wall and mark the hole locations with a pencil 4 Drill 1 4 holes and insert supplied anchors drywal...

Page 4: ...B Reversing valve L System fault indicator W2 Second stage heat conventional Second stage auxiliary heat pump Y2 Second stage cooling conventional Second stage compressor heat pump Jumper between RC R is used in single transformer systems see wiring diagrams C G Y W R L S1 S2 O B W2 Y2 RC Wiring single Transformer use Jumper Wire for HEAT COOL System Installation 1st HEATING 1st COOLING FAN 2nd HE...

Page 5: ... Press repeatedly until system is set to OFF Press and hold and for three seconds The screen of the first setting will be displayed Setup Testing Press or to change the setting Press to change to the next option Press after the last setting DONE will be displayed The thermostat will return to Normal mode if no button is pressed in 3 seconds To reset all system settings back to default press the RE...

Page 6: ... Selects O or B operation 0 O On in cooling 1 B On in heating 04 Control Setup Used to lockout heating or cooling outputs Note Only available if Equipment Type is set to Heat Cool 0 Heat and Cool 1 Heat Only 2 Cool Only 05 Heat Cool Cooling Stages Heat Pump Compressor Stages Heat Cool Number of Cooling Stages Heat Pump Number of Compressor Stages 0 One 1 Two 06 Heat Cool Heating Stages Heat Pump A...

Page 7: ...em setup instructions continued Setup Testing System setting Description Factory default setting bold and setting range 23 Second Stage Differential Second stage differential 1 F 0 5 C 1 F to 9 F 0 5 C to 4 5 C 24 Third Stage Differential Third stage differential 1 F 0 5 C 1 F to 9 F 0 5 C to 4 5 C 25 Fourth Stage Differential Fourth stage differential 1 F 0 5 C 1 F to 9 F 0 5 C to 4 5 C 26 Away E...

Page 8: ...e outdoor sensor is enabled 65 F or 14 5 C 0 F to 80 F 18 C to 22 C or OFF to ignore HBP 41 Program Format Enables the 7 day program 0 7 Day 1 Non Prog 54 Change Air Filter Reminder The period displaying the Change Air Filter reminder OFF 1 to 12 months System setup instructions continued Setup Testing System setting Description Factory default setting bold and setting range 55 Change Water Panel ...

Page 9: ...ating Y Y2 51 Aux Heating W W2 52 Cooling Y Y2 Compressor Cooling Y Y2 53 Fan G Fan G How to enter the system test menu Press repeatedly until system is set to OFF Press and hold and for three seconds The screen of the first test step 50 is displayed Includes Event Based Air Cleaning System test mode continued Setup Testing Press to turn on the output 01 For multi stage output press again to turn ...

Page 10: ...ON DOWN 53 Fan UP ON DOWN Test steps for Heat Pump Step Key Input System Setting Display Output 07 03 01 AUX HEATING ON W 02 AUX HEATING ON W2 01 COOL HEAT ON Y 02 COOL HEAT ON Y2 01 FAN ON G O B 50 Heat 1st UP 0 O ON ON 1 B ON ON ON 2nd UP 0 O ON ON ON 1 B ON ON ON ON DOWN 0 O 1 B ON 51 Aux 1st UP 0 Gas ON 1 Elec ON ON 2nd UP 0 Gas ON ON 1 Elec ON ON ON DOWN 52 Cool 1st UP 0 O ON ON ON 1 B ON ON ...

Page 11: ...ure allows the thermostat to activate the heating and cooling equipment prior to an event in order to reach the desired temperature at the start of the next scheduled event Note BACKLIGHT IS ACTIVATED WITH FIRST BUTTON PRESS AND AUTOMATICALLY TURNS OFF Includes Event Based Air Cleaning Current Indoor Temperature System Mode Setting clean air Setting System Mode clean air Current Schedule Period Me...

Page 12: ...k the cooling equipment to find the cause of the problem Check for 24 VAC between the cooling terminal Y and the transformer common If 24 VAC is present the thermostat is functional Check the cooling system to find the cause of the problem Check for loose or broken wires between the thermostat and the cooling equipment Fan does not turn on in a call for heat Check System Setting 07 Fan Control to ...

Page 13: ...18 30 VAC Current Maximum 2 5A total 1 0A single output Maximum surge current 5A Environment Temperature Operating 32 to 120 F 0 to 48 9 C Shipping 30 to 140 F 34 4 to 60 C Relative humidity Operating 5 to 90 R H non condensing Thermal Outdoor temperature sensor Maximum distance 300 feet Room temperature measurement Display range 32 to 99 F 0 to 40 C Outdoor temperature measurement Display range 4...

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