Aprilaire 8870 installation instructions Diagram 5 Single Stage Heat Pump, See

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DIAGRAM 5 – SINGLE STAGE HEAT PUMP

INDOOR HEAT PUMP UNIT

 

120

 

 

L2

VAC

L1

 

 

 

 

24

 

R

 

 

 

 

VAC

 

C

 

 

 

FAN

 

 

G

RELAY

 

 

 

 

 

 

AUX

 

W1

 

HEAT

 

 

 

 

 

COMPRESSOR

Y1

 

 

APRILAIRE MODEL

 

8870 THERMOSTAT

 

 

 

C

 

RC

 

R

 

 

RSR

SEE

RH

 

NOTE

REMOTE SENSOR(S)

RSA

 

 

RSC

 

 

 

RSB

 

O

 

REF

 

COMMUNICATIONTERMINALS A+

 

 

 

G

 

B-

 

 

B+

 

W1

 

 

 

A-

 

Y1

 

 

 

 

 

W2

 

 

 

Y2

 

B

 

NOTE: HVAC installer may need to connect 24V AC to the R and C terminals to check the HVAC operation. If the automation system is to be installed after the HVAC installation, leave the R and C terminals connected to ensure the HVAC system operates. If the automation system is installed before the HVAC wiring, then DO NOT connect HVAC wires to R and C.

C

W1

DEFROST

O

REV

VALVE

COOL

Y1

B

1ST

STG

COMP.

REV

VALVE

HEAT

IMPORTANT!

The thermostat B

terminal is for

reversing valve-heat. DO NOT connect the B terminal to common side of transformer.

20

OUTDOOR HEAT PUMP UNIT

24V FIELD WIRING

FACTORY WIRING

OPTIONAL 24V

FIELD WIRING (SEE NOTE)

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Contents Installation Instructions Installation Instructions Manual Table of Contents WA R N I N G Model 8870 Thermostat Specifications Hvac System PRE-INSTALLATION Check ListSelect the Thermostat Location WHAT’S in the BOXSTAND-ALONE Thermostat Mounting Criteria Disassembly With Remote Temperature SensorsMount Base to Wall Setting the DIP Switches Shows what each switch corresponds to depending on posiWiring the Thermostat Application Switch #1 Switch #2 Switch #3Page Reassemble the Thermostat Hvac System Check OUTButtons Message Display Scroll SET-UP CHECK-OUT Procedure Temperature Control Options Optional Hvac SET-UP FeaturesBalance Points To Access These Hvac SET-UP Features Display OptionsTo Access These Hvac SET-UP Features Cont Aprilaire Model Thermostat Aprilaire Model Thermostat See Diagram 3 Roof TOP Unit TWO Stage Heat and TWO Stage Cool Terminal to commonDiagram 4 Boiler with AC TWO Transformers Diagram 5 Single Stage Heat Pump SeeDiagram 6 TWO Stage Heat Pump Thermostat B Terminal is forConnect the B terminal Page Page Page Best in Indoor AIR Comfort Aprilaire Automatic Humidifiers

8870 specifications

The Aprilaire 8870 is an advanced smart thermostat that is designed to provide homeowners with precise temperature control, energy efficiency, and ease of use. As an integral part of any modern HVAC system, the 8870 stands out with its sleek design and innovative features that enhance comfort and convenience in everyday living.

One of the most notable features of the Aprilaire 8870 is its Wi-Fi connectivity, which allows users to control their home environment remotely via a smartphone or tablet. This means that homeowners can adjust the temperature, set schedules, and monitor energy usage even when they are away from home. The user-friendly mobile application makes it easy to manage heating and cooling preferences effortlessly.

The touchscreen interface on the 8870 is intuitive, providing a clear display of temperature settings, humidity levels, and system status. The thermostat’s large, easy-to-read screen is backlit, making it convenient for users to operate even in low-light conditions. Additionally, the customizable settings enable users to create personalized schedules based on their lifestyle, promoting energy savings and comfort.

One of the standout technologies integrated into the Aprilaire 8870 is its programmable humidity control. This feature helps maintain optimal humidity levels, enhancing indoor air quality and preventing potential issues such as mold growth and discomfort caused by dry air. By monitoring both temperature and humidity, the thermostat ensures a balanced and healthy indoor environment.

Moreover, the Aprilaire 8870 incorporates energy-saving features such as adaptive scheduling and smart alerts. Adaptive scheduling learns from the homeowner's behavior and adjusts the heating and cooling cycles accordingly. Smart alerts inform users of maintenance needs, filter changes, and extreme temperatures, ensuring that the HVAC system runs efficiently and reliably.

In summary, the Aprilaire 8870 is not just a conventional thermostat; it is a smart home device that optimizes comfort and energy efficiency. With its remote access, programmable settings, humidity control, and user-friendly technology, the 8870 exemplifies how modern thermostats can significantly enhance the home experience. Whether controlling the climate from afar or simply enjoying the ease of a customizable schedule, users can expect improved comfort and lower energy costs with this intelligent thermostat.