White Rodgers 1F86EZ-0251 installation instructions Technical Data, CUT Tape OFF

Page 7

Technical Data

Figure 2. Typical wiring diagram for single transformer single stage systems

Optional Jumper for

Single Stage Heat Pump

O/B

Y

G

W

C

Changeover

 

Fan

 

 

Relay*

Compressor

 

Optional

Relay

 

 

Heat Relay

 

Contactor

 

 

 

 

 

 

 

 

*Changeover Relay is energized in COOL when O/B switch is in the “O” position Changeover Relay is energized in HEAT when O/B switch is in the “B” position

THERMOSTAT

R

SYSTEM

24 VAC

 

Hot

 

 

120 VAC

Neutral

TRANSFORMER

(Class II Current Limited)

Figure 3. Typical wiring diagram for two transformer single stage systems with NO safety circuits

Optional Jumper for Single Stage Heat Pump

NOTE

If safety circuits are in only one of the systems, remove the transformer of the system with NO safety circuits.

CUT AND

TAPE OFF!

HOT

 

 

 

 

 

24 VAC

120 VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NEUTRAL

O/B Y

Changeover

Relay*

Compressor

Contactor

G

Fan

Relay

WC

Optional

Heat Relay

THERMOSTAT

R

SYSTEM

Limit or

Safety

Switches

 

 

 

 

 

 

 

Hot

 

24 VAC

 

 

 

 

120 VAC

 

 

 

 

 

 

 

Neutral

 

 

 

 

 

 

 

TWO COMMONS MUST

* Changeover Relay is energized in COOL when O/B switch is in the “O” position BE JUMPERED TOGETHER! Changeover Relay is energized in HEAT when O/B switch is in the “B” position

TRANSFORMER

(Class II Current Limited)

Figure 4. Typical wiring diagram for two transformer single stage systems with safety circuits in BOTH systems

Optional Jumper for

Single Stage Heat Pump

O/B Y GWC

Changeover

 

 

Fan

 

 

 

Optional

Relay*

 

 

Relay

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Compressor

 

 

 

Heat

 

 

 

 

Contactor

 

 

 

Relay

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE

Polarity must be observed. If the HOT side of the second transformer is jumpered to the COMMON side of the first transformer a short will be made. Damage to equipment will occur when power is restored.

THERMOSTAT

R

 

 

 

SYSTEM

 

 

Limit or

 

 

 

Limit or

 

 

 

 

 

 

 

 

 

Safety

 

HOT

Safety

 

24 VAC

 

 

 

 

120 VAC

Switches

 

 

 

Switches

 

 

 

 

 

 

 

 

 

 

NEUTRAL

24 VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Auxiliary

 

 

 

 

 

 

 

ACCESSORY

 

Heating

 

 

 

NOTE

 

RELAY N.O.

Transformer

 

The

accessory relay scheme

CONTACT

 

(Class II

 

is required

when safety

 

 

 

Current Limited)

COMMON

circuits exist in both systems.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TWO COMMONS MUST

Limit or

 

 

 

 

 

 

 

BE JUMPERED TOGETHER!

Safety

 

 

 

 

 

 

 

 

Switches

24 VAC

 

 

 

 

120 VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMMON

 

 

 

 

 

* Changeover Relay is energized in COOL when O/B switch is in the “O” position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heat Pump Transformer

Changeover Relay is energized in HEAT when O/B switch is in the “B” position

 

 

 

 

(Class II Current Limited)

Limit or

Safety Switches HOT

NEUTRAL

7

Image 7
Contents Message to Homeowner 1H/1CDisplay Thermostat Buttons and SwitchesBattery Location Get to know your thermostatChange Filter Reminder Option Using your thermostatHome, Sleep and Away Temperature Pre-Sets Sleep Timer OptionRemove the Old Thermostat InstallationInstall the New Thermostat Set SwitchesMenu Navigation Select Configuration OptionsConfiguration Menu Enter MenuReset Operation TroubleshootingCUT Tape OFF Technical DataHomeowner Help Line SpecificationsThermostat Application Guide

1F86EZ-0251 specifications

The White Rodgers 1F86EZ-0251 is a sophisticated digital thermostat that caters to the modern homeowner's need for precision control and energy efficiency. Designed to maximize comfort while minimizing energy consumption, this device stands out in the competitive thermostat market due to its array of features and user-friendly technologies.

One of the primary characteristics of the White Rodgers 1F86EZ-0251 is its intuitive interface, featuring a large easy-to-read display that allows users to effortlessly navigate through settings and options. The clarity of the screen contributes to a straightforward user experience, which is vital when adjusting temperature settings, scheduling, or accessing system information.

The 1F86EZ-0251 employs advanced temperature control technologies, including adaptive recovery, which optimizes the comfort level by learning how long it takes to reach the desired temperature at different times of the day. This feature not only enhances user comfort but also reduces energy usage, as the system can precondition the environment efficiently without unnecessary heating or cooling.

Another notable technology within this thermostat is its 7-day programmable scheduling capability. Users can customize their heating and cooling schedules for each day of the week, ensuring that the temperature is maintained at optimal levels when home and adjusted when away. This kind of schedule flexibility aids in significant energy savings throughout the year.

The White Rodgers 1F86EZ-0251 is also equipped with a filter change indicator, ensuring that users are reminded to maintain their HVAC system regularly. This feature helps prolong the life of the equipment and improves indoor air quality by ensuring the air filter is clean.

Moreover, compatibility is a strong point for the 1F86EZ-0251, as it works with various heating and cooling systems, including gas, oil, and electric systems. This versatility makes it an ideal choice for a wide range of households and HVAC setups.

In terms of installation, the unit is designed for easy mounting and comes with a built-in level to ensure proper alignment. This simplifies the installation process for DIY homeowners.

Overall, the White Rodgers 1F86EZ-0251 stands as a reliable option for those seeking a balance of comfort, control, and efficiency in their home heating and cooling management.