Installation

Installation

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.

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.

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

 

Power & Reset options

 

 

 

The thermostat is dual power. It can either be AC or battery powered, or both (to provide backup power for the clock). Batteries are optional if the thermostat was connected to AC power when installed.

24 VAC must be connected in order for the system fault and emergency heat indicators to operate..

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

The reset button located under the battery cover can be used to reset the thermostat back to factory defaults.. The system settings will also be reset back to defaults..

RC R

W

Y

G

C

S1 S2 O/B L

W2 Y2

4

1.Remove the back of the thermostat, by pressing the tab on the bottom of the unit..

2..Pull wires through the opening on the back of the thermostat..

3.Position and level the back of the thermostat on wall and mark the hole locations with a pencil..

4.Drill 1/4” holes & insert supplied anchors (drywall only).

5.Place back over anchors, insert and tighten screws.

6.Seal wire entry holes to prevent drafts affecting temperature readings..

5

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Aprilaire 8476 installation instructions Outdoor temperature sensor optional, Thermostat mounting Power & Reset options

8476 specifications

The Aprilaire 8476 is a smart thermostat designed to enhance home climate control while promoting energy efficiency. This advanced thermostat stands out with its innovative features and user-friendly design, making it a top choice for homeowners looking to optimize their indoor environment.

One of the key features of the Aprilaire 8476 is its built-in Wi-Fi capability, which allows users to easily connect and control their home’s heating and cooling systems remotely via a smartphone or tablet. This connectivity ensures that users can adjust their home’s temperature settings anytime, anywhere, making it ideal for busy lifestyles.

The intuitive touchscreen interface offers easy navigation and clear visibility of current temperature settings and schedules. This modern design enhances user interaction, allowing for straightforward programming of heating and cooling schedules to suit individual preferences.

Energy efficiency is a top priority with the Aprilaire 8476. Its intelligent algorithms are designed to learn user habits over time, optimizing energy usage and reducing utility bills. The thermostat can provide energy reports and insights, helping homeowners make informed decisions about their energy consumption.

The Aprilaire 8476 also features advanced zoning capabilities, which means it can control multiple zones in a home independently. This feature ensures consistent comfort in different areas, allowing for customized climate control when needed.

For homes equipped with humidification systems, the Aprilaire 8476 integrates seamlessly, offering advanced humidity control. This capability helps maintain optimal indoor air quality and comfort levels, preventing issues associated with extreme dryness or humidity.

Compatibility is another strong point for the Aprilaire 8476, as it works with various HVAC systems, including conventional, heat pump, and multi-stage systems. This versatility means that homeowners do not need to worry about system incompatibilities when upgrading their thermostat.

In summary, the Aprilaire 8476 is an industry-leading smart thermostat that combines innovative technology with user-friendly features. Its Wi-Fi connectivity, touchscreen interface, energy efficiency practices, zoning capabilities, humidity control, and broad compatibility make it an excellent choice for homeowners seeking to enhance their comfort while reducing energy costs.