Installation

Wiring terminal

Installation

CONVENTIONAL HEAT/COOL

Single transformer (use Jumper wire)

B+ A+ B- A- C

B O Y Y2 G RC RH W2 W R S2 S1 T1 T2 RSB RSA

Wire specifications:

B+ / B- – Receive communication terminal

18-24 gauge thermostat wire

(reference automation system)1

 

COMMUNICATION

TERMINALS

NOT USED

NOT USED

 

 

 

 

 

 

 

COOLING

COOLING

FAN

 

1st

2nd

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TRANSFORMER

JUMPER

2nd HEATING 1st HEATING

THERMOSTAT IS POWERED FROM 8819 OR 24VAC

TRANSFORMER

OUTDOOR TEMP SENSOR

REMOTE TEMP SENSOR

SUPPORT

MODULE

CAT-5 or equivalent for communication terminals

A+ / A- – Transmit communication terminal

(reference automation system)1

 

Installation notes:

C – 24VAC Thermostat power (common) from 8819

• Ensure power at the HVAC equipment is off.

R – 24VAC Thermostat power (hot) from 8819

• Loosen screw terminals, insert stripped wire and

B – Reversing valve for heat2

B+ A+ B- A- C B O Y Y2 G RC RH W2 W R S2 S1 T1 T2 RSB RSA

Two transformers (Remove Jumper Wire)

re-tighten..

O – Reversing valve for cool2

• Push the excess wire back into the opening and plug

Y – 1st stage cooling / compressor or dehumidifier3

the wall opening to prevent drafts.

Y2 – 2nd stage cooling / compressor

Note: If the HVAC system was installed before the

G – Fan

automation system, the HVAC installer may have

 

powered the thermostat connecting a wire to the

RC – 24VAC supply cooling4

C terminal and installing a jumper wire from the R

RH – 24VAC supply heating4

terminal to RH or RC.. When used with an automation

W2 – 2nd stage heat / auxiliary / E-Heat

system, the R and C terminals on the Model 8800

W – 1st stage heat / auxiliary / E-Heat / humidifier3

thermostat should only be connected to the same

terminals on the 8819 or a dedicated 24VAC transformer.

S1 & S2 – outdoor temperature sensor (optional)

There should be no connection to the R or C terminals

T1 & T2 – remote temperature sensor (optional)

coming from the HVAC equipment.

RSA & RSB – 8081 or 8082 Support Module

 

 

communication (half duplex)5

1Refer to Aprilaire HVAC Automation System Installation Manual for communication wiring details.

COMMUNICATION

TERMINALS

NOT USED

NOT USED

 

 

 

 

 

 

COOLING

COOLING

FAN

1st

2nd

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COOLING TRANSFORMER

TRANSFORMER

HEATING

2nd HEATING 1st HEATING

THERMOSTAT IS POWERED FROM 8819 OR 24VAC

TRANSFORMER

OUTDOOR TEMP SENSOR

REMOTE TEMP SENSOR

SUPPORT

MODULE

2O and B terminals are both de-energized when system mode is OFF or in AUTO when the heating and cooling equipment is idle.

3When the unit is configured for humidistat mode.

4Jumper between RC & RH is used in single transformer systems (see wiring diagrams).

5Refer to Support Module literature for wiring details.

B+ A+ B- A- C B O Y Y2 G RC RH W2 W R S2 S1 T1 T2 RSB RSA

4

5

Page 3
Image 3
Aprilaire 8800 installation instructions Conventional HEAT/COOL

8800 specifications

The Aprilaire 8800 series is an advanced, high-performance air management system designed for residential use, providing homeowners with superior indoor air quality (IAQ) and comfort. This innovative model stands out for its combination of reliable filtration, user-friendly operation, and cutting-edge technology aimed at ensuring a healthier living environment.

One of the main features of the Aprilaire 8800 is its advanced filtration system. Equipped with a high-efficiency particulate air (HEPA) filter, the device is capable of capturing 99.97% of airborne particles as small as 0.3 microns. This includes dust, pollen, pet dander, and even smoke, making it an essential addition for allergy sufferers or those in areas with high pollution levels. The filter has a long lifespan, generally lasting up to a year, which reduces the hassle of frequent replacements and maintenance.

The Aprilaire 8800 is also designed to control humidity levels effectively. Maintaining optimal humidity levels is crucial for comfort and health, as excessive moisture can lead to mold growth and dust mites, while too little humidity can cause dry skin and respiratory issues. This product includes a built-in humidistat that helps monitor and adjust the humidity levels accordingly.

In terms of operation, the Aprilaire 8800 features an intuitive digital control interface. Homeowners can easily set their desired temperature and humidity levels, while the system automates adjustments to maintain these settings. Additionally, the unit is designed for quiet operation, ensuring that it does not intrude on the comfort of daily life.

The technology utilized in the Aprilaire 8800 series contributes to its efficiency and effectiveness. It is designed for compatibility with most HVAC systems, making it a versatile choice for varying home environments. The system also includes multiple fan speed settings to increase air circulation without compromising energy efficiency.

Overall, the Aprilaire 8800 is an excellent choice for those seeking enhanced air quality and comfort in their homes. With its robust filtration capabilities, humidity control features, and user-friendly interface, it stands out as a reliable option for improving indoor air quality. By investing in an Aprilaire 8800, homeowners can enjoy cleaner, healthier air while also protecting their living spaces from the adverse effects of poor air quality.