Lennox International Inc DAVE LENNOX SIGNATURE COLLECTION GAS FURNACE, SL280DFV Blower Data

Page 35

BLOWER DATA

SL280DF070V36A BLOWER PERFORMANCE (less filter)

0 through 0.8 in. w.g. (Heating) and 0 through 1.0 in. w.g. (Cooling) External Static Pressure Range

HEATING

1 Heating Speed

 

 

 

 

 

 

 

 

 

 

 

DIP Switch

 

First Stage Heating Speed - cfm

 

 

Second Stage Heating Speed - cfm

 

Settings

 

 

 

 

 

 

 

 

 

 

 

+24%

 

1065

 

 

 

1170

 

 

+18%

 

1010

 

 

 

1115

 

 

+12%

 

960

 

 

 

1055

 

 

+6%

 

910

 

 

 

1000

 

 

Factory Default

 

860

 

 

 

945

 

 

–6%

 

805

 

 

 

885

 

 

–12%

 

755

 

 

 

830

 

 

–18%

 

705

 

 

 

775

 

 

 

 

 

COOLING

 

 

 

 

 

 

1 Cooling Speed

 

First Stage Cooling Speed - cfm

 

 

Second Stage Cooling Speed - cfm

 

DIP Switch

Low

Medium-Low

Medium-High

 

2 High

Low

 

Medium-Low

Medium-High

 

2 High

Settings

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

745

870

1025

 

1075

1100

 

1240

1425

 

1515

Factory Default

665

780

925

 

985

1015

 

1115

1305

 

1380

–

590

690

815

 

865

900

 

1025

1170

 

1250

1Cooling and heating speeds are based on a combination of DIP switch settings on the furnace control. Refer to Installation Instructions for specific DIP Switch Settings.

2Factory default setting.

NOTES - The effect of static pressure is included in air volumes shown.

First stage HEAT is approximately 91% of the same second stage HEAT.

First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position. Continuous Fan Only speed is selectable at 28%, 38%, 70% and 100% of the selected second stage cooling speed - minimum 500 cfm. Lennox Harmony III™ Zone Control Applications - Minimum blower speed is 425 cfm.

SL280DF090V48B BLOWER PERFORMANCE (less filter)

0 through 0.8 in. w.g. (Heating) and 0 through 1.0 in. w.g. (Cooling) External Static Pressure Range

HEATING

1 Heating Speed

 

 

 

 

 

 

 

 

 

 

 

DIP Switch

 

First Stage Heating Speed - cfm

 

 

Second Stage Heating Speed - cfm

 

Settings

 

 

 

 

 

 

 

 

 

 

 

+24%

 

1360

 

 

 

1500

 

 

+18%

 

1285

 

 

 

1415

 

 

+12%

 

1220

 

 

 

1350

 

 

+6%

 

1135

 

 

 

1285

 

 

Factory Default

 

1075

 

 

 

1200

 

 

–6%

 

1030

 

 

 

1110

 

 

–12%

 

960

 

 

 

1050

 

 

–18%

 

890

 

 

 

975

 

 

 

 

 

COOLING

 

 

 

 

 

 

1 Cooling Speed

 

First Stage Cooling Speed - cfm

 

 

Second Stage Cooling Speed - cfm

 

DIP Switch

Low

Medium-Low

Medium-High

 

2 High

Low

 

Medium-Low

Medium-High

 

2 High

Settings

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

740

905

1040

 

1220

1085

 

1330

1545

 

1730

Factory Default

690

820

950

 

1110

990

 

1200

1400

 

1,595

–

610

745

855

 

1005

895

 

1075

1270

 

1460

1Cooling and heating speeds are based on a combination of DIP switch settings on the furnace control. Refer to Installation Instructions for specific DIP Switch Settings.

2Factory default setting.

NOTES - The effect of static pressure is included in air volumes shown.

First stage HEAT is approximately 91% of the same second stage HEAT.

First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position. Continuous Fan Only speed is selectable at 28%, 38%, 70% and 100% of the selected second stage cooling speed - minimum 500 cfm. Lennox Harmony III™ Zone Control Applications - Minimum blower speed is 455 cfm.

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Contents Table of Contents Installation Instructions SL280DFVTOP View Unit Dimensions − inches mmParts Arrangement Shipping and Packing List Safety InformationSL280DFV Gas Furnace General Use of Furnace as Construction HeaterCombustion, Dilution & Ventilation Air Equipment in Confined Space ALL AIR from Inside Equipment Confined Space ALL AIR from Outside Equipment in Confined Space ALL AIR from OutsideEquipment in Confined Space NON−COMBUSTIBLE Floor Opening Size Downflow InstallationProperly Plenum Sized Floor Opening Setting EquipmentSL280DFV Unit Cooling CoilFilters Venting Duct SystemTables for installations −1/2 MIN MAX 126 FAN + FAN FAN + NAT 168 Carbon Monoxide Poisoning Hazard Gas PipingGas Pipe Capacity − ft3/hr m3/hr MAKE−UP BOX ElectricalNon−Communicating Icomfortt Integrated Control Outdoor Unit Icomfort Touch 24V Humidifier Connections System Wiring120V Connections ApplicationsSL280 Field Wiring Applications With Conventional Thermostat OFF Single Stage Thermostat w Dual fuel capa Bilities SL280DFV Schematic Wiring Diagram Typical SL280DFV Field Wiring Diagram + = Data High Connection − = Data LOW Connection Integrated Control−10% approx OFF On−Board Links Blower Data 1400 Operating System Demand System Response Sequence VAC Room Thermostat Calls for First Stage Cooling GAS Valve Shown in on Position Unit Start−UpProper Combustion Gas Pressure AdjustmentHigh Altitude Manifold Pressure SettingsHeating Sequence of Operation Other Unit AdjustmentsSEC Heating Operation with TWO−STAGE ThermostatElectrical SHOCK, Fire Or Explosion Hazard ServiceSL280DFV BURNER, Combustion AIR Inducer Assembly Page Repair Parts List Planned ServiceIntegrated Control Diagnostic Codes Integrated Control Diagnostic ModesEquipment is unable to communicate. Indicates Reconfigure the system. Replace control if heating Low pressure switch failed open To flame failure Limiters to protect the motor from damage caused Sor run cycle, or after power reset Volt power−up of the furnace control, Program Unit Capacity/Size ModeCall for FIRST−STAGE Heat Troubleshooting Heating Sequence of OperationCall for Heat Satisfied Call for SECOND−STAGE Heat2ND Stage Heat Call for Heat Satisfied FIRST−STAGE Heat SECOND−STAGE HeatCall for Cooling Troubleshooting Cooling Sequence of OperationCall for FAN Troubleshooting Continuous Fan Sequence of Operation
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DAVE LENNOX SIGNATURE COLLECTION GAS FURNACE, SL280DFV specifications

Lennox International Inc has made a significant mark in the heating, ventilation, and air conditioning (HVAC) industry, known for its commitment to innovation and energy efficiency. One of its standout products is the SL280DFV model, a high-efficiency gas furnace designed to meet the needs of modern homes.

The SL280DFV boasts an impressive Annual Fuel Utilization Efficiency (AFUE) rating of up to 80%. This rating indicates that the furnace converts 80% of the fuel it consumes into usable heat, making it a cost-effective choice for homeowners. The high efficiency not only reduces energy bills but also lessens the environmental impact by minimizing greenhouse gas emissions.

One of the key features of the SL280DFV is its two-stage gas valve operation. This technology allows the furnace to operate at two levels of heating output: low stage for milder days and high stage for extremely cold temperatures. This adaptability enhances comfort by maintaining more consistent indoor temperatures while also saving energy when full power is unnecessary.

Another innovative aspect of the SL280DFV is its variable-speed blower motor. This smart technology enables the furnace to adjust airflow based on the heating needs of a home, which promotes quiet operation and improved temperature consistency throughout living spaces.

The SL280DFV is equipped with a durable heat exchanger that is designed to withstand the rigors of daily use, contributing to the unit’s longevity. Additionally, the furnace features a smart ignition system that ensures reliable start-ups, so homeowners can depend on it through the coldest winter nights.

Safety is also a priority in the design of the SL280DFV. It includes various safety features such as a built-in flame sensor and advanced venting system, designed to avert hazardous situations and ensure optimal operation.

Furthermore, Lennox offers convenient installation and maintenance support, making the SL280DFV not only an efficient heating solution but also a practical choice for homeowners. With its blend of advanced technology, high efficiency, and reliability, the Lennox SL280DFV is an appealing option for those looking to upgrade their home’s heating system, promising comfort and peace of mind for many winters to come.
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