Aprilaire 8355 user manual Limited Warranty

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LENNOX LOW VOLTAGE TERMINAL BOARD

APRILAIRE MODEL 8355 HEAT PUMP THERMOSTAT CONVERSION TO LENNOX

HP21 WITH CB21 PCB HEAT PUMP SYSTEMS

APRILAIRE MODEL 8355 HEAT PUMP THERMOSTAT

R Y1 O B G E W2 L C Y2

24 VAC, RETURN

R-VR

COMPRESSOR CONTACTOR

Y1

REVERSING VALVE [COOLING MODE]

O

FAN CONTACTOR CIRCUIT

F

EMERGENCY HEATING CIRCUIT

E

2ND. STAGE HEATING CIRCUIT

W1

L

24 VAC, COMMON

X

Y2

THE LOW VOLTAGE TERMINAL DESIGNATIONS AND THEIR DESCRIPTION AND/OR FUNCTION ARE USED ON ALL SPLIT SYSTEM CONDENSORS AND HEAT PUMPS

LENNOX LOW VOLTAGE TERMINAL BOARD

APRILAIRE MODEL 8355 HEAT PUMP THERMOSTAT CONVERSION TO LENNOX

HP22 WITH CB19 PCB HEAT PUMP SYSTEMS

APRILAIRE MODEL 8355 HEAT PUMP THERMOSTAT

R Y1 O B G E W2 L C Y2

24 VAC, RETURN

R-VR

COMPRESSOR CONTACTOR

M

REVERSING VALVE [HEATING MODE]

R

FAN CONTACTOR CIRCUIT

F

EMERGENCY HEATING CIRCUIT

E

2ND. STAGE HEATING CIRCUIT

Y

SYSTEM MONITOR LED

L

24 VAC, COMMON

X

2ND. STAGE COOLING CIRCUIT

Y2

THE LOW VOLTAGE TERMINAL DESIGNATIONS AND THEIR DESCRIPTION AND/OR FUNCTION ARE USED ON ALL SPLIT SYSTEM CONDENSORS AND HEAT PUMPS

Limited Warranty

Your Research Products Corporation Aprilaire® Thermostat unit is expressly warranted for two (2) years from date of installa- tion to be free from defects in materials and workmanship. Research Products Corporation’s exclusive obligation under this war- ranty shall be to supply, without charge, a replacement for any thermostat which is found to be defective within a two (2) year period and which is returned, together with the date of installation, no later than thirty (30) days after said two (2) year period by you to either your original supplier or to Research Products Corporation, Madison, Wisconsin 53701.

THIS WARRANTY SHALL NOT OBLIGATE RESEARCH PRODUCTS CORPORATION FOR ANY LABOR COSTS AND SHALL NOT APPLY TO DEFECTS IN WORKMANSHIP OR MATERIALS FURNISHED BY YOUR INSTALLER AS CONTRASTED TO DEFECTS IN THE THERMOSTAT ITSELF.

IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE SHALL BE LIMITED IN DURA- TION TO THE AFORESAID TWO YEAR PERIOD. RESEARCH PRODUCTS CORPORATION’S LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, OTHER THAN DAMAGES FOR PERSONAL INJURIES, RESULTING FROM ANY BREACH OF THE AFORESAID IMPLIED WARRANTIES OR THE ABOVE LIMITED WARRANTY IS EXPRESSLY EXCLUDED. THIS LIMITED WAR- RANTY IS VOID IF DEFECT(S) RESULT FROM FAILURE TO HAVE THIS THERMOSTAT INSTALLED BY A QUALIFIED HEATING AND AIR CONDITIONING CONTRACTOR. IF THE LIMITED WARRANTY IS VOID DUE TO FAILURE TO USE A QUALIFIED CON- TRACTOR, ALL DISCLAIMERS OF IMPLIED WARRANTIES SHALL BE EFFECTIVE UPON INSTALLATION.

Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or con- sequential damages, so the above exclusion or limitations may not apply to you. This warranty gives you specific legal rights and you may also have other rights which vary from state to state.

P.O. BOX 1467 • MADISON, WI 53701-1467

Products For Better Indoor Air Quality

B2202518 REV. 12/00

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Contents Model Features Replacing Existing ThermostatRemove the cover using a coin or screwdriver Installing the Model 8355 ThermostatMark placement of mounting holes. See . Set base aside Secure base to wall with supplied screws Programming Guide Simple Programming Mode Energy Efficient RecoveryChanging Fahrenheit F to Celsius C Begin Programmed Operation Setting Daily ProgrammingPress SET To change Morn time Temporary Program Override ResetManual Operation LED Indicators Press the button until the temperaturePut the COOL-OFF-HEAT-EM switch into the Heat position To Test ThermostatTroubleshooting Wiring Diagrams Aprilaire Model 8355 Heat Pump ThermostatCYC Series Heat Pump Systems Heat Pump Systems York Lennox LOW Voltage Terminal Board Limited Warranty

8355 specifications

The Aprilaire 8355 is a sophisticated and advanced thermostat designed to enhance your home comfort while optimizing energy efficiency. This model is particularly well-suited for homeowners looking for seamless integration with their existing HVAC systems while benefitting from modern smart technology.

One of the standout features of the Aprilaire 8355 is its user-friendly interface. The large, backlit display makes it easy to read and navigate, even in low-light conditions. The intuitive layout allows users to access various settings quickly, ensuring that adjustments can be made without hassle.

The device incorporates advanced programming capabilities, allowing homeowners to set schedules based on their daily routines. This feature enables the thermostat to intelligently adjust the temperature when the house is empty and revert to comfortable levels before the family returns home. The programmable settings can lead to significant energy savings over time, reducing utility bills while maintaining a pleasant indoor environment.

Another notable technology integrated into the Aprilaire 8355 is its humidity control system. Unlike many standard thermostats, this model actively monitors and manages indoor humidity levels. This is particularly beneficial in regions with varying climate conditions, preventing excess moisture or dryness that can lead to mold growth or discomfort.

The thermostat also supports Wi-Fi connectivity, facilitating remote access through a smartphone app. Homeowners can monitor and adjust their home’s temperature and humidity levels from anywhere, making it an ideal choice for individuals who frequently travel or spend time away from home.

Additionally, the Aprilaire 8355 is designed with compatibility in mind, working effectively with various HVAC systems, including two-stage heating and cooling setups. This versatility means that the thermostat can be easily integrated into a wide range of homes, making it a flexible option for both new builds and retrofits.

Energy Star certified, the Aprilaire 8355 is engineered to promote energy conservation. With its built-in features aimed at reducing energy consumption, users can reduce their carbon footprint while enjoying year-round comfort.

In summary, the Aprilaire 8355 is a powerful thermostat that combines extensive programming features, humidity management, and remote connectivity. Its focus on user-friendliness and energy efficiency makes it a smart investment for homeowners aiming to enhance their living environment while reducing energy costs.