WIRING CONNECTIONS

Single Stage Connections

Refer to equipment manufacturers' instructions for specific system wiring information.

This thermostat is designed to operate a single-transformer or two- transformer system.

You can configure the thermostat for use with the following systems:

SINGLE STAGE gas, oil or electric.

After wiring, see INSTALLER CONFIGURATION section for proper thermostat configuration.

Single Stage System with Single Transformer

Jumper

To Remote Temperature Sensor

{

 

B

O

Y

G

RC RH C*

+

S

-

 

W

6

 

L

 

 

 

 

 

System

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Blower/

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Circula-

 

 

 

 

 

 

DC

 

 

DC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Single

 

 

 

 

Energized

tor Fan

 

 

 

 

24 Volt

supply

Remote

Return

 

 

 

Third

Diagnostic

 

 

 

 

 

 

Stage

Energized

Energiz-

on call

Energiz-

24 Volt

24 Volt

Com-

voltage

Temp-

to

 

Energized

 

 

 

 

 

 

 

wire for

Indicator

 

 

 

 

 

 

(SS)

in Heat

ed in

for Cool

ed on

(Hot)

(Hot)

mon

to re-

erature

Remote

 

on call for

3-wire

 

 

 

 

 

 

 

or Off

Cool

(Com-

call for

mote

 

(See

 

 

 

 

 

 

 

Cool

Heat

(option-

Sensor

Temp-

 

Heat

zone

Note 1 )

 

 

 

 

 

 

 

Mode

Mode

pressor)

Cool &

 

 

 

 

al)

Temp-

signal

erature

 

 

 

valve

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

for Heat

 

 

 

 

 

 

erature

 

 

Sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(if ELE

 

 

 

 

 

 

Sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

is sel-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ected)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NEUTRAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24VAC

 

 

 

120VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* Common connection

 

 

 

 

 

 

HOT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CLASS II

 

 

 

 

 

 

 

 

 

 

 

 

 

 

required for fault or

 

 

 

 

 

 

 

 

TRANSFORMER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

malfunction indication

and remote sensor.

Single Stage with Two Transformers

 

 

 

 

 

 

 

 

 

 

 

Remove Jumper Wire

 

 

 

To Remote Temperature Sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

between RH & RC

 

Jumper

 

 

 

 

{

 

 

 

 

 

NOTE: If continuous backlight or hardwired

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

power input are desired but do not function

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

O

Y

G

RC

RH

C*

+

 

S

-

W

6

L

in both HEAT and COOL modes, cut the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

heating transformer 24V wires and tape off.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

System

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Connect the neutral circuit disconnected

 

 

 

 

 

 

 

 

 

 

 

 

 

Blower/

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

from the heating transformer to the neutral

 

 

 

 

 

 

 

 

 

 

 

Energized

Circula-

 

 

 

 

 

 

DC

 

 

 

DC

 

 

 

 

 

 

circuit of the cooling transformer. Disconnect

 

 

 

 

 

 

 

 

 

 

 

tor Fan

 

 

 

 

24 Volt

supply

 

Remote

Return

 

 

 

 

 

 

the wire to the RH terminal and install a

 

 

 

 

 

Single

Energized

Energized

on call

Energiz-

24 Volt

24 Volt

Com-

voltage

 

Temp-

to

Energized

Third wire

Diagnostic

jumper between RH and RC. Depending on

 

 

 

 

 

for Cool

ed on

 

 

 

 

 

 

Stage

in Heat,

in Cool

(Com-

call for

(Hot)

(Hot)

mon

to re-

 

erature

Remote

on call for

for 3-wire

Indicator

the system requirements, replace the

 

 

 

 

 

(SS)

Off Mode

Mode

Cool

Heat

(option-

mote

 

Sensor

Temp-

Heat

zone valve

(See

 

 

 

 

 

pressor)

Heat or

 

cooling transformer with a 75VA class II

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

al)

Temp-

 

signal

erature

 

 

 

 

Note 1 )

 

 

 

 

 

 

 

 

 

 

 

 

 

Cool

 

 

 

 

 

 

erature

 

 

 

Sensor

 

 

 

 

 

 

transformer if needed.

 

 

 

 

 

 

 

 

 

 

 

 

 

(if ELE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

is sel-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ected)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NEUTRAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NEUTRAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24VAC

 

 

 

120VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HOT

 

 

 

 

 

120VAC

 

 

 

 

24VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COOLING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HOT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* Common connection

 

 

 

 

 

CLASS II

HEATING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TRANSFORMER

 

 

CLASS II

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

required for fault or

 

 

 

 

 

 

 

 

 

 

 

TRANSFORMER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

malfunction indication

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and remote sensor.

NOTE : Connection for Call for Service diagnostic indicator compatible with mechanical or electronic condenser control with Comfort AlertTM.

3

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White Rodgers 1F97-1277 specifications Single Stage Connections, Single Stage System with Single Transformer

1F97-1277 specifications

The White Rodgers 1F97-1277 is an advanced programmable thermostat designed for residential heating and cooling systems. This model exemplifies the perfect blend of functionality and user-friendliness, offering homeowners a reliable way to manage their indoor climate effectively.

One of the standout features of the 1F97-1277 is its intuitive interface. The large, easy-to-read LCD display allows users to quickly view and adjust settings without the frustration often associated with traditional thermostats. The screen includes backlighting, ensuring visibility even in low-light conditions.

The unit is programmable, providing users the flexibility to create customized heating and cooling schedules. With up to seven-day programming, homeowners can tailor their settings according to personal routines. This level of customization not only enhances comfort but also contributes to energy savings, as systems can be set to reduce heating or cooling when the home is unoccupied.

White Rodgers has integrated a variety of technologies into the 1F97-1277 to improve performance and user experience. The thermostat features an auto-changeover function, which allows it to seamlessly switch between heating and cooling modes depending on the indoor temperature. This functionality minimizes the need for manual adjustments, ensuring optimal comfort throughout the year.

Another important characteristic of this model is its compatibility with a range of HVAC systems. It supports single-stage and multi-stage heating and cooling systems, as well as heat pumps, making it a versatile choice for a variety of homes. The 1F97-1277 also includes FARS (Fresh Air Reduction System) technology, which monitors indoor air quality and adjusts operations to enhance ventilation.

Energy efficiency is further bolstered through the presence of smart recovery technology. This feature enables the thermostat to anticipate the time needed to reach the desired temperature, allowing the HVAC system to operate less while still maintaining comfort levels.

Overall, the White Rodgers 1F97-1277 represents a modern solution for temperature control. With its combination of user-friendly design, programmable capabilities, and advanced technologies, it stands out as an exceptional choice for anyone looking to improve home comfort while managing energy costs efficiently. The reliability and flexibility of this thermostat make it an invaluable tool for today’s homeowners.