Lennox International Inc SL280UH090V36B Unit Dimensions − inches mm, Return air from both sides

Page 2

Unit Dimensions − inches (mm)

1NOTE − 60C and 60D units that require air volumes over 1800 cfm

 

 

3−1/8 (79)

(850 L/s) must have one of the following:

 

 

 

 

 

 

 

1. Return air from single side transition will accommodate 20 x 25 x1 in.

 

 

(508 x 635 x 25) cleanable air filter. (Required to maintain proper air

 

D

 

velocity)

 

 

 

2. Single side return air with optional RAB Return

 

 

 

 

Air Base.

 

 

 

 

3. Return air from bottom and one side.

FLUE OUTLET

SUPPLY AIR

4. Return air from both sides.

OPENING

 

(Top)

 

5. Return air from bottom.

 

 

 

 

 

 

 

See blower performance tables for additional information

 

 

 

 

2Flue outlet may be horizontal but furnace must be

 

 

vented vertically

 

 

3Optional external side return air filter kit cannot be used

 

 

with the optional RAB Return Air Base.

3 OPTIONAL

23−3/4

 

EXTERNAL

 

(603)

 

SIDE RETURN

 

25

 

AIR FILTER KIT

 

(Either Side)

(635)

 

 

TOP VIEW

 

A

 

 

 

B

9/16 (14)

 

 

3 OPTIONAL

 

 

EXTERNAL

 

 

SIDE RETURN

 

 

AIR FILTER KIT

 

 

(Either Side)

 

 

 

33

 

 

 

(838)

 

 

14−3/4

 

 

 

(375)

 

 

 

16

 

 

 

(406)

 

AIR FLOW

 

 

 

 

 

5/8

3/4

C

3/4

(16)

(19)

(19)

 

1Bottom Return Air Opening

FRONT VIEW

1−1/2 (38)

27−3/4

 

Front Panel

(705)

 

 

 

3−1/4 (83)

 

 

3 (76) Right

19−7/16

9/16

(14)

7 (178) Left

(494)

 

 

2 FLUE OUTLET

 

 

9−1/8 (232) Right

(Either Side)

 

 

GAS PIPING INLET

 

 

8−5/8 (219) Left

 

 

 

(Either Side)

 

 

5−3/8 (137) Right

ELECTRICAL INLET

 

 

2−3/4 (70) Left

 

 

(Either Side)

 

 

 

23

 

1−1/2

 

(584)

 

(38)

 

1 Side Return

14

 

 

Air Opening

(356)

 

 

(Either Side)

 

 

 

1−15/16 (49)

 

3−1/4

23−1/2

 

 

(83)

(597)

 

 

 

1 Bottom Return

 

 

SIDE VIEW

Model No.

 

A

 

B

C

 

 

D

 

 

 

 

 

 

 

 

 

 

 

 

in.

 

mm,

in.

 

mm

in.

 

mm

in.

 

mm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SL280UH070V36A

14−1/2

 

368

13−3/8

 

340

13

 

330

4−3/4

 

121

 

 

 

 

 

 

 

 

 

 

 

 

 

SL280UH090V36B

17−1/2

 

446

16−3/8

 

416

16

 

406

6−1/4

 

159

SL280UH090V48B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SL280UH090V60C

21

 

533

19−7/8

 

504

19 1/2

 

495

8

 

203

SL280UH110V60C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SL280UH135V60D

24−1/2

 

622

23−3/8

 

546

23

 

584

9−3/4

 

248

 

 

 

 

 

 

 

 

 

 

 

 

 

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Contents Installation Instructions SL280UHV Table of ContentsSide Return Air Opening Unit Dimensions − inches mmReturn air from both sides Either SideSight Glass Access Panel Blower AssemblyParts Arrangement Shipping and Packing List Safety InformationSL280UHV Gas Furnace Air Handler Unit Use of Furnace as Construction HeaterGeneral EvaporatorCombustion, Dilution & Ventilation Air Equipment in Confined Space ALL AIR from InsideEquipment Confined Space ALL AIR from Outside Equipment in Confined Space ALL AIR from OutsideEquipment in Confined Space Blower Motor Rigid LEG Setting EquipmentBottom Indoor AIR 20 X 25 XFurnace Front Return AIR BaseEnd Bottom Horizontal Application Installation Clearances Top LeftRight Typical Horizontal ApplicationFilters Duct SystemTop Vent Discharge VentingUpflow Position Left Side Vent DischargeSide Vent Discharge Horizontal Left PositionHorizontal Right Position Sticker Common Venting Using Metal−Lined Masonry ChimneyDisconnected Vent 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 Gas Piping Ers or straps. Install a drip leg in vertical pipe runs to− In some localities, codes may require the installation Every 8 to 10 feet 2.44 to 3.01 m with suitable hangRight−Side Air Discharge Horizontal ApplicationLeft−Side Air Discharge Electrostatic Discharge ESD Interior MAKE−UP BOX InstallationElectrical BOXNon−Communicating CommunicatingIcomfortt Integrated Control Outdoor Unit Icomfort Touch 120V Connections NON−COMMUNICATING System WiringCommunicating System Wiring 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 + = Data High Connection − = Data LOW Connection Integrated ControlRS−BUS Link TB82, future use −10% approx OFF On−Board Links 940 1045985 880SL280UH090V36B Blower Performance less filter 1155 12801220 10951170 12951235 11101165 13601230 11001160 12901225 1380+18% 1605 SL280UH110V60C Blower Performance less filter +18% 1785 SL280UH135V60D Blower Performance less filter Operating Sequence Compressor Thermostat energizes Y2White Rodgers GAS Valve For Your Safety Read Before LightingUnit Start−Up Honeywell GAS ValveProper Combustion Gas Pressure AdjustmentGAS Meter Clocking Chart DialHigh Altitude Other Unit Adjustments Heating Sequence of OperationSEC Heating Operation with TWO−STAGE ThermostatHeating Operation with Single Stage Thermostat Service Electrical SHOCK, Fire Or Explosion Hazard11− Back wash using steam. Begin from the burner opening SL280UHV BURNER, Combustion AIR Inducer Assembly13− To clean the combustion air inducer visually inspect 17− Reinstall burner box, manifold assembly and burner boxSL280UHV NOX Inserts Planned Service Repair Parts ListIntegrated Control Diagnostic Modes Integrated Control Diagnostic CodesPower at the thermostat. Alert stops all services Normal operation 5 seconds after fault recoveredFurnace / air handler. Clears after fault recovered Equipment is unable to communicate. IndicatesControl will still operate on default parameter set Reconfigure the system. Replace control if heatingMissioning and Execute ’Set Factory Default mode’ Ate feature will be set as ’installed’ and that couldFault is cleared Low pressure switch failed openSumes normal operation after fault is cleared Tion after fault is clearedSoft lockout or reset Open or not within specifications −hour soft lockOut. Clears when flame has been proven stable To flame failureError after current is sensed in both RUN Pair/add duct. Cleared after the current service deIs not running. Check power to outdoor unit. Clears 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
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