TYPICAL SYSTEM WIRING DIAGRAM

HOT

NEUTRAL

(LINE)

(LINE)

 

120 VAC

 

 

24 VAC CLASS II

 

 

 

TRANSFORMER

 

TH

24 VAC

TR

 

 

50A55

 

 

 

COOL

 

 

 

HEAT

 

CIRCU-

 

PARK

 

LATOR

 

PARK

 

BLOWER

 

LINE

 

 

 

XFMR

 

 

 

EAC

 

 

 

HUM

 

 

INDUCER

IND

 

 

IGN

IGNITOR

 

HUMIDIFIER

IND N

 

IGN N

 

 

 

CIR N

 

 

 

LINE N

 

 

 

XFMR N

 

 

ELECTRONIC

HUM N

 

 

EAC N

 

 

AIR CLEANER

 

 

 

 

 

 

Y

Y

 

 

W

W

COMPRESSOR

 

 

 

CONTACTOR

 

G

G

 

 

R

R

 

 

C

THERMOSTAT

 

 

 

 

 

 

PRESSURE SWITCH (N. O.)

 

PS

 

 

 

HLI

 

 

FLAME

HLO

HIGH LIMIT

AUX. HIGH

SENSOR

FP

(N. C.)

LIMIT (N. C.)

PROBE

 

 

 

 

GND

 

GAS

 

 

 

 

MV

 

VALVE

 

MV

 

 

 

TR

 

 

 

TH

 

 

LEGEND

 

 

 

Low Voltage (24 VAC)

 

 

 

Line Voltage (120 VAC)

 

 

 

N. C. = Normally closed switch

 

 

 

N. O. = Normally open switch

 

 

 

4

Page 4
Image 4
White Rodgers 50A55-438 installation instructions Typical System Wiring Diagram

50A55-438 specifications

The White Rodgers 50A55-438 is a highly versatile and efficient thermostat widely recognized for its reliability and advanced features. Designed with both functionality and user-friendliness in mind, this device serves as an excellent solution for managing heating and cooling systems in residential and commercial applications.

One of the standout features of the 50A55-438 is its compatibility with a wide range of HVAC systems. It supports single-stage and multi-stage heating and cooling units, allowing users to integrate it seamlessly into various setups. This versatility makes it suitable for diverse environments, from single-family homes to larger commercial spaces.

The thermostat is equipped with a user-friendly interface, complete with a large, easy-to-read display that simplifies temperature adjustments and system monitoring. The illuminated screen enhances visibility, allowing users to operate the device even in low-light conditions. Its intuitive menu system guides users through programming options, making it accessible for individuals without extensive technical knowledge.

In terms of energy management, the White Rodgers 50A55-438 utilizes advanced algorithms that promote energy efficiency. The programmable capabilities enable users to set specific heating and cooling schedules, optimizing comfort while minimizing energy consumption. This feature is particularly beneficial for those looking to reduce utility costs while maintaining a pleasant indoor climate.

The thermostat also includes features such as a temperature lock, which prevents unauthorized adjustments, making it an ideal choice for rental properties or commercial sites where temperature control is critical. Additionally, it offers an automatic changeover function, allowing the device to switch between heating and cooling modes based on the ambient temperature, thus ensuring consistent comfort year-round.

The White Rodgers 50A55-438 is built to last, featuring robust construction designed to withstand the rigors of daily use. It operates quietly, contributing to a serene environment in homes and workplaces. Furthermore, installation is straightforward, as the thermostat is designed to fit standard wall plates and connections, enabling a hassle-free setup process.

In summary, the White Rodgers 50A55-438 stands out as a top choice for those seeking an advanced, efficient, and easy-to-use thermostat. Its compatibility with various HVAC systems, programmable features, energy-saving capabilities, and robust design make it an excellent investment for effective climate control. Whether for residential or commercial use, this thermostat meets the demands of modern temperature regulation with precision and reliability.