Lennox International Inc SL280DFV 120V Connections, Applications, 24V Humidifier Connections

Page 24

Optional Accessories for use with any icomfort Touch® System

NOTE: icomfort Touch® THERMOSTAT SENSES HUMIDITY

&CONTROLS HUM CONTACTS TO CYCLE HUMIDIFIER BASED ON DEMAND. NO OTHER CONTROL OR HUMIDIS- TAT REQUIRED.

OPTIONAL OUTDOOR AIR SENSOR FOR USE WITH HU- MIDIFIER (IF NOT ALREADY IN THE SYSTEM FOR OTHER FUNCTIONS. BUILT INTO ALL icomfort by Lennoxt OUT-

DOOR UNITS).

120V CONNECTIONS

ACT IS

CLOSED ANYTIME

HUMIDITY DEMAND

IS PRESENT

icomfortt ENABLED SL280DFV FURNACE

Discharge Air

Sensor (Required

for even heat)

icomfort Touch®

THERMOSTAT

RSBus

Maximum total length of all con- nections on the RSBus is limited to 1500ft.

Wire gauge of RSBus wire is 18.

 

 

NOTE: 24V UV LIGHT

 

 

APPLICATIONS

 

 

 

In an icomfort by Lennoxt system,

 

 

neither furnace nor air handler trans-

 

 

former will have adequate VA to

 

 

power 24V UV light applications. An

 

 

additional transformer for UV light

 

 

applications is required.

 

 

icomfort t

 

 

ENABLED FURNACE

ENABLED OUTDOOR

 

 

AIR CONDITIONING OR

 

 

 

 

 

 

HEAT PUMP UNIT

 

 

icomfortt SL280DFV

(POWER COMPANY INTERRUPTION SYSTEMS

HVAC

 

 

 

ARE WIRED SAME AS OVERFLOW SWITCH)

 

EQUIPMENT

 

 

 

24V HUMIDIFIER CONNECTIONS

CS 7000

THERMOSTAT

CONVENTIONAL

NON−COMMUNI-

CATING SYSTEM

COMMUNICATING SYSTEM

*24V IN jumper not used in non− communicating configuration

*24V IN

JUMPER

icomfortt ENABLED SL280DFV FURNACE

icomfort Touch®

THERMOSTAT

DEHUMIDIFIER

CONTROL

Rf Cf Gs

HVAC

Gh WDH

EQUIP

HEPA BYPASS FILTER X2680 HEPA INTERLOCK KIT

ENABLED FURNACE

THROUGH CURRENT LOOP.

 

PASS INDOOR BLOWER

icomfortt SL280DFV

MOTOR COMMON WIRE

SEE HEPA INTERLOCK KIT

 

 

FOR INSTALLATION DE-

 

TAILS

STANDARD 1 OR 2

STAGE AC OR HP UNIT

NON−COMMUNICATING

SYSTEM WIRING

ENABLED

FURNACE

icomfortt SL280DFV

LVCS VENTILATION CONTROL SYSTEM

SEE LVCS VENTILATION

INSTRUCTIONS FOR

DAMPER & SENSOR WIRING

2 STAGE FURNACE

 

DS

CUT

 

R−DS

 

W914

R

COMMUNICATING SYSTEM WIRING

FIGURE 22

Page 24

Image 24
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
Related manuals
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.