Lennox International Inc SL280DFV, DAVE LENNOX SIGNATURE COLLECTION GAS FURNACE 1400

Page 36

BLOWER DATA

SL280DF090V60C 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%

 

1540

 

 

 

1695

 

 

+18%

 

1465

 

 

 

1615

 

 

+12%

 

1390

 

 

 

1530

 

 

+6%

 

1320

 

 

 

1450

 

 

Factory Default

 

1245

 

 

 

1365

 

 

–6%

 

1170

 

 

 

1285

 

 

–12%

 

1095

 

 

 

1205

 

 

–18%

 

1020

 

 

 

1120

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

1125

1250

1400

 

1590

1585

 

1770

2000

 

2275

Factory Default

1020

1135

1285

 

1445

1420

 

1610

1845

 

2,050

–

900

1005

1155

 

1280

1305

 

1395

1645

 

1875

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 480 cfm.

SL280DF110V60C 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%

 

1645

 

 

 

1810

 

 

+18%

 

1565

 

 

 

1720

 

 

+12%

 

1485

 

 

 

1635

 

 

+6%

 

1405

 

 

 

1545

 

 

Factory Default

 

1325

 

 

 

1460

 

 

–6%

 

1245

 

 

 

1370

 

 

–12%

 

1170

 

 

 

1285

 

 

–18%

 

1090

 

 

 

1195

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

1075

1225

1370

 

1530

1500

 

1755

1915

 

2120

Factory Default

945

1120

1230

 

1385

1360

 

1585

1770

 

1960

–

880

985

1135

 

1235

1225

 

1405

1595

 

1760

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 485 cfm.

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Contents Installation Instructions SL280DFV Table of ContentsUnit Dimensions − inches mm TOP ViewParts Arrangement Safety Information SL280DFV Gas FurnaceShipping and Packing List Use of Furnace as Construction Heater GeneralCombustion, Dilution & Ventilation Air Equipment in Confined Space ALL AIR from Inside Equipment in Confined Space ALL AIR from Outside Equipment in Confined SpaceEquipment Confined Space ALL AIR from Outside Downflow Installation NON−COMBUSTIBLE Floor Opening SizeSetting Equipment SL280DFV UnitCooling Coil Properly Plenum Sized Floor OpeningFilters Duct System VentingTables for installations −1/2 MIN MAX 126 FAN + FAN FAN + NAT 168 Gas Piping Carbon Monoxide Poisoning HazardGas Pipe Capacity − ft3/hr m3/hr Electrical MAKE−UP BOXNon−Communicating Icomfortt Integrated Control Outdoor Unit Icomfort Touch System Wiring 120V ConnectionsApplications 24V Humidifier ConnectionsSL280 Field Wiring Applications With Conventional Thermostat OFF Single Stage Thermostat w Dual fuel capa Bilities SL280DFV Schematic Wiring Diagram Typical SL280DFV Field Wiring Diagram Integrated Control + = Data High Connection − = Data LOW Connection−10% approx OFF On−Board Links Blower Data 1400 Operating System Demand System Response Sequence VAC Room Thermostat Calls for First Stage Cooling Unit Start−Up GAS Valve Shown in on PositionGas Pressure Adjustment Proper CombustionManifold Pressure Settings High AltitudeOther Unit Adjustments Heating Sequence of OperationHeating Operation with TWO−STAGE Thermostat SECService Electrical SHOCK, Fire Or Explosion HazardSL280DFV BURNER, Combustion AIR Inducer Assembly Page Planned Service Repair Parts ListIntegrated Control Diagnostic Modes Integrated Control Diagnostic CodesEquipment 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 Program Unit Capacity/Size Mode Volt power−up of the furnace control,Troubleshooting Heating Sequence of Operation Call for FIRST−STAGE HeatCall for SECOND−STAGE Heat Call for Heat SatisfiedCall for Heat Satisfied FIRST−STAGE Heat SECOND−STAGE Heat 2ND Stage HeatTroubleshooting Cooling Sequence of Operation Call for CoolingTroubleshooting Continuous Fan Sequence of Operation Call for FAN
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Manual 6 pages 24.8 Kb

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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