NOTE

 

 

 

 

NOTE

The following wiring diagrams show typical terminal identifica-

Relay contacts shown are thermostatically operated.

tion and wiring. For proper installation, refer to the original

 

 

manufacturer's instructions.

 

 

 

 

 

* The 24 Volt neutral connection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

to terminal C on the thermostat

 

 

 

 

 

 

Thermostat

is not required if you replace

 

 

 

 

 

 

 

Control

the batteries once a year with

 

 

 

 

 

 

 

®

 

 

 

 

 

 

 

Circuit

fresh “AA” Energizer alkaline

 

 

 

 

 

 

 

batteries.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

THERMOSTAT

B

O

Y

Y2

G

W

W2

C*

R

 

Compressor

 

Heat

 

Energized

 

Relay

 

Contactor

 

 

in COOL

 

Stage 1

 

Stage 2

 

Energized

Compressor

Fan

Heat

Contactor

Relay

in HEAT

Relay

Stage 1

Stage 2

 

 

SYSTEM

Hot

24 VAC

120 VAC

Neutral

TRANSFORMER

Figure 3. Typical wiring diagram for single transformer systems

 

CUT AND

Y

Y2

G

O

 

TAPE OFF!

 

 

 

 

Hot

 

 

Compressor

 

Energized

 

 

 

 

120 VAC

24 VAC

 

Contactor

 

 

 

in COOL

 

 

 

Stage 2

 

Neutral

 

 

 

 

 

 

 

 

 

TRANSFORMER

 

 

 

 

 

Compressor

Fan

 

 

 

Contactor

 

 

 

Relay

 

 

 

Stage 1

 

 

 

 

 

 

 

B W

Heat

Relay

Stage 1

Energized

in HEAT

Thermostat

Control

Circuit

W2C*

Heat

Relay

Stage 2

*The 24 Volt neutral connection to terminal C on the thermostat is not required if you replace

the batteries once a year with fresh “AA” Energizer® alkaline batteries.

THERMOSTAT

R

SYSTEM

Hot

24 VAC

120 VAC

Neutral

TRANSFORMER

TWO COMMONS MUST

BE JUMPERED TOGETHER!

Figure 4. Typical wiring diagram for two-transformer systems with NO safety circuits

Thermostat

Control

Circuit

THERMOSTAT

Y

Y2

G

O

B

W

W2

C*

R

*The 24 Volt neutral connection to terminal C on the thermostat is not required if you replace

the batteries once a year with fresh “AA” Energizer® alkaline batteries.

Compressor

Energized

Contactor

in COOL

Stage 2

 

Compressor

Fan

Contactor

Relay

Stage 1

Heat

Relay

Stage 1

 

 

 

 

 

 

 

 

Energized

 

 

 

Heat

 

 

 

Relay

in HEAT

 

 

 

 

 

 

Stage 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SYSTEM

 

 

 

 

 

 

 

 

 

Limit or

 

Limit or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Safety

Hot

Safety

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Switches

 

 

 

 

 

 

 

 

 

Switches 24 VAC

 

 

 

 

 

 

120 VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Neutral

24 VAC

 

Accessory

HEATING

Relay N.O.

TRANSFORMER

Contact

 

Common

TWO COMMONS MUST

BE JUMPERED TOGETHER!

 

Limit or

 

 

 

 

 

Limit or

 

 

 

 

Safety

 

 

 

 

 

Safety

 

Hot

Common

Switches

24 VAC

 

 

 

120 VAC

Switches

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Neutral

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COOLING

 

 

 

 

 

 

 

TRANSFORMER

 

 

 

Figure 5. Typical wiring diagram for two-transformer systems with safety circuits in BOTH systems

3

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Image 3
White Rodgers 1F81-71 specifications Relay contacts shown are thermostatically operated

1F81-71 specifications

The White Rodgers 1F81-71 is an advanced programmable thermostat that combines user-friendly features with state-of-the-art technology. Designed for residential applications, this model emphasizes efficiency, convenience, and precise climate control.

One of the standout features of the 1F81-71 is its user-friendly interface. The large, easy-to-read LCD display allows for quick adjustments and clarity in temperature readings. Users appreciate the intuitive button layout, which simplifies navigation through various settings. This thermostat accommodates both standard and heat pump systems, making it versatile for different heating and cooling configurations.

The 1F81-71 supports 7-day programmable scheduling, allowing users to customize temperature settings for each day of the week. This capability helps optimize comfort during peak and off-peak hours, ultimately contributing to energy savings. The flexibility in programming means homeowners can set different routines for weekdays and weekends, catering to various lifestyles.

Energy efficiency is at the forefront of the 1F81-71’s design. Featuring a setback function, it helps reduce energy consumption by automatically adjusting the temperature when the home is unoccupied or when occupants are asleep. This feature not only contributes to lower utility bills but also supports environmental sustainability.

Additionally, this thermostat incorporates advanced technologies such as Auto Changeover, which allows it to automatically switch between heating and cooling modes based on real-time temperature needs. The Smart Recovery feature learns how long it takes to reach the desired temperature, ensuring homes are comfortable when occupied without unnecessary energy expenditure.

Connectivity options are another significant aspect of the White Rodgers 1F81-71. While it does not feature Wi-Fi connectivity, it can be paired with various compatible systems to enhance its range of usability. This makes it an excellent choice for users looking for a more manual approach to climate control without sacrificing functionality.

In terms of installation, the 1F81-71 is designed for easy setup. The package includes comprehensive instructions, ensuring that even those unfamiliar with HVAC systems can successfully mount and configure it. Its reliable performance, along with a durable build, contributes to its appeal among homeowners seeking a dependable temperature control solution.

In summary, the White Rodgers 1F81-71 is a programmable thermostat that excels in versatility, energy efficiency, and user convenience. Its comprehensive features, technological advancements, and straightforward operation make it a valuable addition to any modern home. Whether enhancing comfort or reducing energy usage, this thermostat stands out in the crowded market of home climate control solutions.