WIRING DIAGRAMS

Figure 5 – Single Stage or Multi-Stage System (No Heat Pump) with Two Transformers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Jumper

 

 

Remove Jumper Wire

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

between RH & RC

 

 

 

 

 

 

 

 

 

L

O/B

Y

Y2

W/E

W2

G

RH

RC

 

C

 

 

 

 

 

 

 

System

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Single

 

 

O

 

 

No

 

 

 

 

Blower/

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stage 1

 

 

Energized Constantly

 

 

 

 

No Output

Circulator

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Output

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(SS1)

Fault

in Cool Mode

 

 

 

 

Fan Energized

 

 

 

 

 

Optional

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heat

 

 

24 Volt

24 Volt

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indicator

B

Cool Mode

 

 

 

 

on Call for

 

24 Volt

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(NOT

1st Stage

 

 

Mode

 

 

Cool (and

(Hot)

(Hot)

 

(Com-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heat

Cool

 

 

 

 

 

 

 

 

 

 

 

 

 

Multi-

USED)

Energized Constantly

 

 

Cool

1st Stage

Heat Mode

Heat if

 

mon)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

in Heat, Off,

 

 

Mode

 

 

configured

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stage 2

 

 

Emergency

 

 

 

 

2nd Stage

for Electric

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2nd

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(MS2)

 

 

Mode

 

 

 

 

 

 

Heat)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NEUTRAL

 

 

 

 

 

 

 

 

 

 

 

 

NEUTRAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24VAC

 

 

 

 

120VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HOT

 

 

 

 

 

 

120VAC

 

 

 

 

24VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COOLING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HOT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HEATING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CLASS II

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TRANSFORMER

 

 

 

 

CLASS II

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TRANSFORMER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 6 – 3-Wire (SPDT) Heat Only Zone Valve Wiring

Jumper

6

Y

W

G

RH RC C

System

Single Stage

3-wire

Zone Valve application

Closes

Valve

(6)

Opens

Valve

(4)

Blower/Circulator

Fan Energized

24Volt (Hot) Heat

(5)

24Volt (Hot) Cool

Constant

24Volt (Com- mon)

NEUTRAL

24VAC

HOT

120VAC

CLASS II

TRANSFORMER

4

Page 4
Image 4
White Rodgers 1F85-0477 specifications Wire Spdt Heat Only Zone Valve Wiring

1F85-0477 specifications

The White Rodgers 1F85-0477 is a popular thermostat designed to offer homeowners an efficient and user-friendly control over their heating and cooling systems. As part of the White Rodgers brand, which has been synonymous with reliable HVAC controls for decades, the 1F85-0477 stands out with a variety of features and technologies that enhance user experience.

One of the main features of the 1F85-0477 is its digital display, which provides clear and easy-to-read temperature settings. The intuitive interface allows users to adjust the temperature with just a few button presses, making it accessible for people of all ages. The large, backlit screen also ensures visibility even in low-light conditions, adding to its usability.

The 1F85-0477 supports both heating and cooling functions, making it versatile for year-round temperature control. This model is compatible with a range of HVAC systems, including gas, oil, and electric systems, as well as heat pumps. This broad compatibility ensures that homeowners can seamlessly integrate the thermostat into their existing setups without the need for extensive modifications.

Another significant feature is the programmable functionality, which allows users to set different temperature schedules for weekdays and weekends. This feature helps optimize energy use by ensuring that the heating or cooling system operates only when needed, thus contributing to lower energy bills. The thermostat can be programmed for up to seven days, offering flexibility and comfort tailored to individual lifestyles.

In terms of technology, the White Rodgers 1F85-0477 employs a precise temperature sensing mechanism that ensures accurate readings. This technology minimizes temperature fluctuations, which increases overall comfort levels within the home. Additionally, the model includes a built-in memory that retains settings even in the event of a power outage, ensuring that users don't have to reprogram their preferences.

The thermostat also boasts a sleek, modern design that fits well with contemporary home décor. Its user-friendly installation process allows homeowners to set it up quickly and easily, with minimal tools required.

Overall, the White Rodgers 1F85-0477 combines convenience, efficiency, and modern design into a reliable thermostat solution. With advanced features and robust technologies, it is an ideal choice for homeowners looking to enhance their HVAC control while enjoying optimal comfort and energy savings.