Aprilaire 8476W Guía de configuración

Model 8476W Thermostat

with Wi-Fi and

Event-Based™Air Cleaning

READ AND SAVE THESE INSTRUCTIONS

Safety &

Installation

Instructions

2 3

Installation location recommendations................................................................3

Outdoor temperature sensor (optional) ................................................................4

Thermostat mounting..............................................................................5

Power & reset options.............................................................................5

Wiring terminal ..................................................................................6

Wiring diagrams .................................................................................7

Wi-Fi setup......................................................................................3

TABLE OF CONTENTS

INSTALLATION

WI-FI SETUP

SETUP & TESTING

REFERENCES

System setup instructions ..........................................................................9

System test mode ...............................................................................16

Quick reference to controls & display................................................................20

Thermostat features .............................................................................21

Troubleshooting .................................................................................22

Specifications...................................................................................24

INSTALLATION

INSTALLATION LOCATION RECOMMENDATIONS

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 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, in stairwells, or near

outside doors.

• On a wall with concealed pipes or ductwork.

WI-FI SETUP

For detailed instructions for connecting the thermostat to a Wi-Fi network and registering it to an Aprilaire account,

refer to the Wi-Fi Quick Start Guide included in the box.

4 5

OUTDOOR TEMPERATURE SENSOR (OPTIONAL)

Outdoor temperature can be measured by attaching an

8052 sensor to the S1 and S2 terminals. System setting

#05 (Remote sensor) is used to enable sensor.

Heat pump applications can use the outdoor temperature

to effectively utilize the heat pump:

• When the outdoor temperature is less than the Low

Balance Point, the heat pump will be locked out and

only auxiliary heating will be used to provide heating.

• When the outdoor temperature is higher than the High

Balance Point, the auxiliary heating will be locked out

and only the heat pump will be used to provide heating.

INSTALLATION

S1 S2 O/B W2 Y2

• Install on side of building out of direct sunlight

(north side recommended).

• Mount above snow line.

• Mount at least 3’ away from exhaust 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 (drywall only).

5. Place mounting plate over anchors, insert and tighten screws.

6. Seal wire entry holes to prevent drafts affecting temperature

readings.

INSTALLATION

POWER & RESET OPTIONS

The thermostat is powered from 24VAC. In the case of power loss the thermostat will maintain the clock for 24

hours. The thermostat has a memory backup that saves the thermostat settings in case of power interruption.

The reset button located under the cover on the front of the thermostat can be used to reset the thermostat to

factory defaults. The system settings will also be set to default.

90-2033

6 7

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.

INSTALLATION

RC – 24 VAC supply cooling*

R – 24 VAC supply heating*

W – First stage heat (conventional) / First stage auxiliary (heat pump)

Y – First stage cooling (conventional) / First stage compressor (heat pump)

G– Fan

C – Common

S1 & S2 – Outdoor temperature sensor (optional)

O/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).

S1 S2 O/B W2 Y2

WIRING – SINGLE TRANSFORMER (USE

JUMPER WIRE) FOR HEAT/COOL SYSTEM

INSTALLATION

1st HEATING

1st COOLING

FAN

2nd HEATING

2nd COOLING

OUTDOOR TEMP

SENSOR

NOT USED

JUMPER

TRANSFORMER

S1 S2 O/B W2 Y2

WIRING – TWO TRANSFORMERS (REMOVE

JUMPER WIRE) FOR HEAT/COOL SYSTEM

1st HEATING

1st COOLING

FAN

2nd HEATING

2nd COOLING

OUTDOOR TEMP

SENSOR

NOT USED

HEATING

TRANSFORMER

COOLING

TRANSFORMER

S1 S2 O/B W2 Y2

8 9

INSTALLATION

WIRING – SINGLE TRANSFORMER (USE

JUMPER WIRE) FOR HEAT PUMP SYSTEM

1st AUX HEATING

1st COMPRESSOR

FAN

REVERSE VALVE

FAULT DETECT

2nd AUX HEATING

2nd COMPRESSOR

OUTDOOR TEMP

SENSOR

HEAT PUMP

TRANSFORMER

S1 S2 O/B W2 Y2

JUMPER

1st AUX HEATING

1st COMPRESSOR

FAN

REVERSE VALVE

FAULT DETECT

2nd AUX HEATING

2nd COMPRESSOR

OUTDOOR TEMP

SENSOR

HEATING

TRANSFORMER

HEAT PUMP

TRANSFORMER

S1 S2 O/B W2 Y2

WIRING – TWO TRANSFORMERS (REMOVE

JUMPER WIRE) FOR HEAT PUMP SYSTEM

SYSTEM SETUP INSTRUCTIONS

How to enter the system setup menu to change

system settings

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

RESET button located under the cover on the front of

the thermostat.

Includes Event-Based™Air Cleaning

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. Default settings are shown in bold. Some settings are only

available based on other setting values.

SYSTEM SETTING NUMBER

SETTING VALUE

10 11

SETUP & TESTING

SYSTEM SETUP INSTRUCTIONS (CONTINUED)

The Model 8476W thermostat has the option of being used in heat pump or heat/cool systems. Switch SW1 located

on the back of the thermostat is used to select this. System setting number 01 will only be shown on these models

to display the position of SW1.

SW1

HEAT/COOL

HEAT PUMP

SETUP & TESTING

System setting Description

Factory default setting (bold)

and setting range

01. Equipment Type Equipment type set by SW1. 0: Heat/Cool

1: Heat Pump

02. Temperature Scale Set the thermostat to Fahrenheit or Celsius

mode.

0: Fahrenheit

1: Celsius

03. Reversing Valve 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: Aux Heat

Stages

Heat/Cool: Number of Heat Stages.

Heat Pump: Number of Auxiliary Heat Stages.

0: One

1: Two

07. Heat/Cool: Fan Control

in Heating

Heat Pump: Auxiliary

Equipment Type

Heat/Cool: Determines if the thermostat or

equipment controls the fan in heating.

Heat Pump: Auxiliary Equipment type.

0: Gas/Oil Heat (equipment controls

fan)

1: Electric Heat (thermostat controls fan)

SYSTEM SETUP INSTRUCTIONS (CONTINUED)

90-2034

12 13

SETUP & TESTING

System setting Description

Factory default setting (bold)

and setting range

10. Temperature Sensor Offset Field adjustment of temperature sensor. 0° (no offset applied)

-4°F to +4°F (-2°C to +2°C)

12. Auto Changeover Enable or disable auto changeover mode. 0: Disable

1: Enable

13. Deadband Auto Changeover mode deadband. 3°F (1.5°C)

2°F to 9°F (1°C to 4.5°C)

15. Outdoor Sensor Select if outdoor sensor is attached or not. 0: Not installed

1: Installed

18. Compressor Min Off Time Minimum off time for compressor protection. 5 minutes

1 to 5 minutes

19. Heating Min Off Time Minimum off time for heating. 2 minutes

1 to 5 minutes

20. Equipment Min On Time Minimum on time for heating and cooling. 2 minutes

1 to 5 minutes

22. First Stage Differential First stage differential. 1°F (0.5°C)

1°F to 9°F (0.5°C to 4.5°C)

SYSTEM 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 Enables the Away feature. The Away feature

allows the Aprilaire mobile and web apps to use

a single button press to set the thermostat to a

predefined setpoint(s). The thermostat will hold

the setpoint(s) until Away is canceled with the

app or at the thermostat.

0: Disable

1: Enable

27. Heat Blast Enables the Heat Blast® feature. The Heat Blast

feature is only available with the app, and will

raise the current room temperature 3°F to 5°F

based on the Blast Offset and then resume

normal operation. Heat Blast can be canceled

with the app or at the thermostat.

0: Disable

1: Enable

SYSTEM SETUP INSTRUCTIONS (CONTINUED)

14 15

SETUP & TESTING

System setting Description

Factory default setting (bold)

and setting range

28. Blast Offset Amount of heating when Heat Blast is initiated. 3°F (1.5°C)

3°F to 5°F (1.5°C to 2.5°C)

37. Stage Rate Accumulation of equipment run time in

equipment staging determination.

1 = more rapid staging of equipment (comfort).

5 = slower staging of equipment (economy).

1 to 5 or “OFF” to ignore accumulated

run time.

38. Progressive Recovery Enable or disable progressive recovery. 0: Disable

1: Enable

39. Low Balance Point Outdoor temperature low balance point.

Note: This option is only available if the outdoor

sensor is enabled.

20°F or -8°C

0°F to 60°F (-18°C to 12°C) or OFF to

ignore LBP

40. High Balance Point Outdoor temperature high balance point.

Note: This option is only available if the 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

Reminder

The time until the first Change Water Pnl

message is displayed.

OFF

1 to 12 months

56. Humidifier Type Selects the type of humidifier. If humidifier type

is set to Drain-less, then the first reminder is

based on the system setting 55, the second

reminder will activate 3 months later. If

humidifier type is set to Flow through, then the

first reminder is based on system setting 55, the

second reminder will activate 12 months later.

0: Flow through type humidifier

(1 reminder per season)

1: Drain-less type humidifier

(2 reminders per season)

SYSTEM SETUP INSTRUCTIONS (CONTINUED)

16 17

SYSTEM TEST MODE

The system test mode is used to test a system after installation. The outputs of the thermostat can be manually

activated one at a time to test their function. The following instructions show how to enter the test mode and turn

outputs on and off. The charts on the following pages show the output status for each test step for Heat/Cool and

Heat Pump mode.

The test steps are:

SETUP & TESTING

Test Number Heat/Cool Heat Pump

50 Heating (W) (W2) Compressor Heating (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 on the 2nd stage (02).

Press to turn off the output (00).

Press to change to the next test step.

Press after the last test step. “DONE” will be

displayed.

The thermostat will return to Normal mode if no button is

pressed in 3 seconds.

SYSTEM TEST

NUMBER

OUTPUT STATUS

MODE

(SW1 SETTING)

18 19

SETUP & TESTING

Test steps for Heat/Cool

Step Key Input

System Setting Display (Output)

#07

HEATING

ON (W)

HEATING

ON (W2)

COOLING

ON (Y)

COOLING

ON (Y2)

FAN ON

(G)

#50 Heat

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] ON ON

2nd [UP] ON ON 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)

COOL/HEAT

ON (Y)

COOL/HEAT

ON (Y2)

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

2nd [UP] 0 : O ON ON ON ON

1 : B ON ON ON

[DOWN] 0 : O ON

1 : B

#53 Fan [UP] ON

[DOWN]

SETUP & TESTING

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