Lennox International Inc Typical EL280UH Field Wiring Diagram, TWO−STAGE Integrated Control

Models: Elite Series Gas Furnace Upflow/Horizontal Air Discharge EL280UH

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TYPICAL EL280UH FIELD WIRING DIAGRAM

FIGURE 32

TWO−STAGE INTEGRATED CONTROL

1/4" QUICK CONNECT TERMINALS

DIAGNOSTIC

LEDs

DIP

SWITCHES

ON−BOARD

LINKS

SENSE = 120 VAC OUTPUT TO FLAME SENSOR

NEUTRALS= 120 VAC NEUTRAL

PARK = DEAD TERMINAL FOR UNUSED BLOWER LEAD

HEAT LOW = 120 VAC OUTPUT TO CIRC BLWR −− LOW HT SPEED HEAT HIGH/ COOL LOW = 120 VAC OUTPUT TO CIRC BLWR −−

HIGH HEAT AND LOW COOL SPEED

COOL HIGH = 120 VAC OUTPUT TO CIRC BLWR −− HIGH COOL SPEED

THERMOSTAT CONNECTIONS (TB1)

1= ERROR CODE RECALL H= 24V HUMIDIFIER OUTPUT

L= LENNOX SYSTEM OPERATION MONITOR

DIP SWITCH FUNCTIONS

W915

W951

DIP SWITCH(ES)

FUNCTION

 

 

1 −− 2 Stage T’stat

Selects t/stat type (single or two−stage)

2 −− 2nd Stage Delay

Second stage ON delay (single−stage t’stat)

3 & 4

−− Heat Off Delay

Heating fan OFF delay

5 −−

Cool Off Delay

Cooling fan OFF delay

FIGURE 33

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Lennox International Inc installation instructions Typical EL280UH Field Wiring Diagram, TWO−STAGE Integrated Control

Elite Series Gas Furnace Upflow/Horizontal Air Discharge, EL280UH specifications

Lennox International Inc. has established itself as a leader in the heating and cooling industry, providing innovative solutions for both residential and commercial environments. One of their notable products is the EL280UH, a high-efficiency gas furnace designed to offer optimal comfort while minimizing energy consumption.

The EL280UH operates with an impressive Annual Fuel Utilization Efficiency (AFUE) rating of up to 80%. This efficiency rating means that 80% of the fuel consumed is converted into heat, making it a cost-effective option for homeowners looking to reduce their utility bills. The furnace’s design is tailored to deliver reliable warmth during the coldest months, ensuring a comfortable home environment.

A key feature of the EL280UH is its two-stage heating capability. This technology allows the furnace to operate at a lower heating output for less demanding conditions, which not only conserves energy but also helps maintain a more consistent temperature in the home. When the demand for heat increases, the furnace can seamlessly transition to its higher output setting, providing quick and effective heating when needed.

Additionally, the EL280UH is equipped with a durable cabinet that minimizes heat loss, enhancing overall performance. The design incorporates several sound-dampening features as well, which contributes to quieter operation, allowing homeowners to enjoy a serene indoor environment.

The furnace also includes an advanced control system that integrates easily with smart home technology. This feature enables users to monitor and adjust their heating settings from anywhere using a smartphone app, creating added convenience and control over home heating.

Safety is another paramount aspect of the EL280UH. It includes an integrated flame sensor and pressure switch, ensuring reliable operation while minimizing risks associated with furnace malfunctions. The design adheres to stringent safety standards, providing users with peace of mind.

In summary, the Lennox EL280UH furnace stands out for its high efficiency, advanced features, and commitment to user safety. Its two-stage heating capability, quiet operation, and smart home integration make it an excellent choice for homeowners looking to enhance their heating system while being energy-conscious. The EL280UH embodies Lennox's dedication to quality and innovation, ensuring that comfort and efficiency go hand in hand.