TYPICAL SYSTEM WIRING TABLE

50A55

TERMINAL

SYSTEM COMPONENT

TERMINAL

TYPE

CONNECTION

W

 

low voltage thermostat W terminal (or equivalent)

G

Terminal

low voltage thermostat G terminal (or equivalent)

R

block with

low voltage thermostat R terminal (or equivalent)

Y

captive

low voltage thermostat Y terminal (or equivalent)

 

screws

(2nd wire from Y terminal goes to 24 VAC HOT side of

 

 

compressor contactor coil)

C

 

24 VAC COMMON side of compressor contactor coil

MV (2 terminals)

 

gas valve (both gas solenoids are connected in parallel)

TR

 

24 VAC transformer (low voltage COMMON side)

TH

 

24 VAC transformer (low voltage HIGH side)

RO1

 

rollout switch OUTPUT

RO2

12-pin

rollout switch INPUT

FP

connector

flame sensor probe*

PS

& harness

pressure switch INPUT

HLI

 

high limit INPUT

HLO

 

high limit OUTPUT

GND

 

MUST BE RELIABLY GROUNDED TO CHASSIS

(unused terminal)

 

 

IND

4-pin

inducer HOT side

IGN

ignitor HOT side

connector

IND N

inducer NEUTRAL side

& harness

IGN N

ignitor NEUTRAL side

 

COOL

14” spade terminal

circulator blower COOL SPEED terminal

HEAT

14” spade terminal

circulator blower HEAT SPEED terminal

PARK (2 terminals)

14” spade terminal

unused circulator blower terminals

LINE

14” spade terminal

input voltage (120 VAC) HOT side

XFMR

14” spade terminal

24 VAC transformer line voltage HOT side

EAC (optional)

14” spade terminal

electronic air cleaner HOT side

HUM (optional)

14” spade terminal

humidifier HOT side

CIR N

14” spade terminal

circulator blower NEUTRAL terminal

LINE N

14” spade terminal

input voltage (120 VAC) NEUTRAL side

XFMR N

14” spade terminal

24 VAC transformer line voltage NEUTRAL side

EAC N (optional)

14” spade terminal

electronic air cleaner NEUTRAL side

HUM N (optional)

14” spade terminal

humidifier NEUTRAL side

* maximum recommended flame probe wire length is 36 inches.

5

Page 5
Image 5
White Rodgers 50a55-286 installation instructions Terminal System Component Type Connection, Typical System Wiring Table

50a55-286 specifications

The White Rodgers 50A55-286 is a highly esteemed thermostat designed for residential heating and cooling systems. Known for its reliability and user-friendly interface, this device integrates cutting-edge technology with versatility that appeals to a wide range of users. The 50A55-286 is particularly recognized for accommodating various HVAC systems, including gas, oil, and electric heating as well as central air conditioning.

One of the most prominent features of the White Rodgers 50A55-286 is its digital display, which provides clear readability of the current temperature settings and system status. The thermostat is equipped with an intuitive user interface that allows users to easily adjust temperatures and settings. The programming capabilities enable users to set distinct temperatures for different times of the day, promoting energy efficiency. This feature not only aids in maintaining comfort but also helps in reducing energy costs by avoiding unnecessary heating or cooling when not needed.

In addition to its programmable functions, the White Rodgers 50A55-286 is designed with both heat and cool settings. This versatility is essential for homes with varied climate needs throughout the year. The thermostat also includes a blower control that provides optimal airflow management, enhancing comfort in living spaces.

The technological design of the 50A55-286 adheres to industry standards while ensuring compatibility with most existing systems. The quick-connect terminals facilitate straightforward installation, making it accessible to both experienced technicians and DIY enthusiasts. Moreover, the thermostat's robust construction ensures durability and longevity, even in the face of temperature fluctuations.

Another significant characteristic is the precise temperature control that the White Rodgers 50A55-286 offers. It features an accuracy range that allows for minimal temperature variance, ensuring that users can achieve and maintain their desired indoor environment. The thermostat's energy-saving settings further enhance its appeal, making it an eco-friendly choice for modern-day consumers.

In conclusion, the White Rodgers 50A55-286 thermostat is a well-rounded device, presenting key features such as its user-friendly design, compatibility with various HVAC systems, digital display, customizable programming, and energy efficiency. With its advanced technologies and solid performance, it remains a preferred choice for homeowners seeking reliable climate management solutions.