Lennox International Inc SL280UH090V48B, SL280UH070V36A 120V Connections, Applications

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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 SL280UHV 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 SL280UHV

(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 SL280UHV FURNACE

icomfort Touch®

THERMOSTAT

DEHUMIDIFIER

CONTROL

Rf Cf Gs

HVAC

Gh WDH

EQUIP

HEPA BYPASS FILTER X2680 HEPA INTERLOCK KIT

ENABLED FURNACE

PASS INDOOR BLOWER

 

MOTOR COMMON WIRE

icomfortt SL280UHV

THROUGH CURRENT LOOP.

SEE HEPA INTERLOCK KIT

 

 

FOR INSTALLATION DE-

 

TAILS

STANDARD 1 OR 2

STAGE AC OR HP UNIT

NON−COMMUNICATING

SYSTEM WIRING

ENABLED

FURNACE

icomfortt SL280UHV

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 31

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Image 28
Contents Installation Instructions SL280UHV Table of ContentsUnit Dimensions − inches mm Return air from both sidesSide Return Air Opening Either SideParts Arrangement Access Panel Blower AssemblySight Glass SL280UHV Gas Furnace Safety InformationShipping and Packing List Use of Furnace as Construction Heater GeneralAir Handler Unit EvaporatorCombustion, Dilution & Ventilation Air Equipment in Confined Space ALL AIR from InsideEquipment in Confined Space Equipment in Confined Space ALL AIR from OutsideEquipment Confined Space ALL AIR from Outside Bottom Setting EquipmentBlower Motor Rigid LEG 20 X 25 X Furnace FrontIndoor AIR Return AIR BaseHorizontal Application Installation Clearances Top Left RightEnd Bottom Typical Horizontal ApplicationFilters Duct SystemVenting Upflow PositionTop Vent Discharge Left Side Vent DischargeHorizontal Right Position Horizontal Left PositionSide Vent Discharge Common Venting Using Metal−Lined Masonry Chimney Disconnected VentSticker Vent PipeVent Connector Through an unused masonry chimney flue is not considered102 127 −1/2 152 178 10−1/2 MIN MAX Feet FAN + FAN FAN + NAT 130 Carbon Monoxide Poisoning Hazard Ers or straps. Install a drip leg in vertical pipe runs to − In some localities, codes may require the installationGas Piping Every 8 to 10 feet 2.44 to 3.01 m with suitable hangLeft−Side Air Discharge Horizontal ApplicationRight−Side Air Discharge Interior MAKE−UP BOX Installation ElectricalElectrostatic Discharge ESD BOXNon−Communicating CommunicatingIcomfortt Integrated Control Outdoor Unit Icomfort Touch NON−COMMUNICATING System Wiring Communicating System Wiring120V Connections ApplicationsDIP Switch Settings and On−Board Links See figure OFF Single Stage Thermostat w Dual fuel capa Bilities SL280UHV Schematic Wiring Diagram Typical SL280UHV Field Wiring Diagram RS−BUS Link TB82, future use Integrated Control+ = Data High Connection − = Data LOW Connection −10% approx OFF On−Board Links 1045 985940 880SL280UH090V36B Blower Performance less filter 1280 12201155 10951295 12351170 11101360 12301165 11001290 12251160 1380+18% 1605 SL280UH110V60C Blower Performance less filter +18% 1785 SL280UH135V60D Blower Performance less filter Operating Sequence Compressor Thermostat energizes Y2For Your Safety Read Before Lighting Unit Start−UpWhite Rodgers GAS Valve Honeywell GAS ValveGas Pressure Adjustment GAS Meter Clocking ChartProper Combustion DialHigh Altitude Other Unit Adjustments Heating Sequence of OperationHeating Operation with Single Stage Thermostat Heating Operation with TWO−STAGE ThermostatSEC Service Electrical SHOCK, Fire Or Explosion HazardSL280UHV BURNER, Combustion AIR Inducer Assembly 13− To clean the combustion air inducer visually inspect11− Back wash using steam. Begin from the burner opening 17− Reinstall burner box, manifold assembly and burner boxSL280UHV NOX Inserts Planned Service Repair Parts ListIntegrated Control Diagnostic Modes Integrated Control Diagnostic CodesNormal operation 5 seconds after fault recovered Furnace / air handler. Clears after fault recoveredPower at the thermostat. Alert stops all services Equipment is unable to communicate. IndicatesReconfigure the system. Replace control if heating Missioning and Execute ’Set Factory Default mode’Control will still operate on default parameter set Ate feature will be set as ’installed’ and that couldLow pressure switch failed open Sumes normal operation after fault is clearedFault is cleared Tion after fault is clearedOpen or not within specifications −hour soft lock Out. Clears when flame has been proven stableSoft lockout or reset To flame failurePair/add duct. Cleared after the current service de Is not running. Check power to outdoor unit. ClearsError after current is sensed in both RUN Vice is removed, or after power resetSor run cycle, or after power reset Program Unit Capacity/Size Mode FinishedTroubleshooting 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