Lennox International Inc SL280UH070V36A, SL280UH090V48B, SL280UH090V36B 130

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TABLE 7

Vent Connector Capacity

Type B Double−Wall Vents with Single−Wall Metal Connectors

Serving Two or More Category I Appliances

					Vent and Connector Diameter − D (inches)
Height	Lateral
Height	Lateral		3 Inch		4 Inch				5 Inch			6 Inch
H	L		3 Inch		4 Inch				5 Inch			6 Inch

					Appliance Input Rating in Thousands of Btu Per Hour
(feet)	(feet)				Appliance Input Rating in Thousands of Btu Per Hour
(feet)	(feet)
		MIN		MAX	MIN		MAX	MIN		MAX	MIN		MAX


	1	NR		NR	NR		NR	NR		NR	NR		NR

6	2	NR		NR	NR		NR	NR		NR	168		182
	3	NR		NR	NR		NR	121		131	175		198

	1	NR		NR	NR		NR	NR		NA	NR		NR

8	2	NR		NR	NR		NR	125		126	184		193

	3	NR		NR	NR		NR	130		138	191		208

	1	NR		NR	NR		NR	119		121	182		186

10	2	NR		NR	84		85	124		134	189		203

	3	NR		NR	89		91	129		144	197		217

	1	NR		NR	79		87	116		138	177		214

15	2	NR		NR	83		94	121		150	185		230

	3	NR		NR	87		100	127		160	193		243

	1	49		56	78		97	115		152	175		238

20	2	52		59	82		103	120		163	182		252

	3	55		62	87		107	125		172	190		264

	1	47		60	77		110	112		175	169		278

30	2	51		62	81		115	117		185	177		290

	3	54		64	85		119	122		193	185		300

NOTE − Single appliance venting configurations with zero lateral lengths are assumed to have no elbows in the vent system. For all other vent configurations, the vent system is assumed to have two 90° elbows. For each additional 90° elbow or equivalent (for example two 45° elbows equal one 90° elbow) beyond two, the maximum capacity listed in the venting table should be reduced by 10 percent (0.90 x maxi- mum listed capacity).

TABLE 8

Common Vent Capacity

Type B Double−Wall Vents with Single−Wall Metal Connectors

Serving Two or More Category I Appliances

Vent				Common Vent Diameter − D (inches)
Vent
Height	4 Inch		5 Inch			6 Inch		7 Inch
Height
H			Appliance Input Rating in Thousands of Btu Per Hour
(feet)
(feet)	FAN + FAN	FAN + NAT	FAN + FAN		FAN + NAT	FAN + FAN	FAN + NAT	FAN + FAN	FAN + NAT
	FAN + FAN	FAN + NAT	FAN + FAN		FAN + NAT	FAN + FAN	FAN + NAT	FAN + FAN	FAN + NAT


6	NA	78	NA		113	200	158	304	244

8	NA	87	NA		126	218	173	331	269

10	NA	94	163		137	237	189	357	292

15	121	108	189		159	275	221	416	343

20	131	118	208		177	305	247	463	383

30	145	132	236		202	350	286	533	446

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Contents Table of Contents Installation Instructions SL280UHVReturn air from both sides Unit Dimensions − inches mmSide Return Air Opening Either SideAccess Panel Blower Assembly Parts ArrangementSight Glass Safety Information SL280UHV Gas FurnaceShipping and Packing List General Use of Furnace as Construction HeaterAir Handler Unit EvaporatorCombustion, Dilution & Ventilation Air Space ALL AIR from Inside Equipment in ConfinedEquipment in Confined Space ALL AIR from Outside Equipment in Confined SpaceEquipment Confined Space ALL AIR from Outside Setting Equipment BottomBlower Motor Rigid LEG Furnace Front 20 X 25 XIndoor AIR Return AIR BaseRight Horizontal Application Installation Clearances Top LeftEnd Bottom Typical Horizontal ApplicationDuct System FiltersUpflow Position VentingTop Vent Discharge Left Side Vent DischargeHorizontal Left Position Horizontal Right PositionSide Vent Discharge Disconnected Vent Common Venting Using Metal−Lined Masonry ChimneySticker Vent PipeThrough an unused masonry chimney flue is not considered Vent Connector102 127 −1/2 152 178 10−1/2 MIN MAX Feet FAN + FAN FAN + NAT 130 Carbon Monoxide Poisoning Hazard − In some localities, codes may require the installation Ers or straps. Install a drip leg in vertical pipe runs toGas Piping Every 8 to 10 feet 2.44 to 3.01 m with suitable hangHorizontal Application Left−Side Air DischargeRight−Side Air Discharge Electrical Interior MAKE−UP BOX InstallationElectrostatic Discharge ESD BOXCommunicating Non−CommunicatingIcomfortt Integrated Control Outdoor Unit Icomfort Touch Communicating System Wiring NON−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 Integrated Control RS−BUS Link TB82, future use+ = Data High Connection − = Data LOW Connection −10% approx OFF On−Board Links 985 1045940 880SL280UH090V36B Blower Performance less filter 1220 12801155 10951235 12951170 11101230 13601165 11001225 12901160 1380+18% 1605 SL280UH110V60C Blower Performance less filter +18% 1785 SL280UH135V60D Blower Performance less filter Operating Sequence Thermostat energizes Y2 CompressorUnit Start−Up For Your Safety Read Before LightingWhite Rodgers GAS Valve Honeywell GAS ValveGAS Meter Clocking Chart Gas Pressure AdjustmentProper Combustion DialHigh Altitude Heating Sequence of Operation Other Unit AdjustmentsHeating Operation with TWO−STAGE Thermostat Heating Operation with Single Stage ThermostatSEC Electrical SHOCK, Fire Or Explosion Hazard Service13− To clean the combustion air inducer visually inspect SL280UHV BURNER, Combustion AIR Inducer Assembly11− Back wash using steam. Begin from the burner opening 17− Reinstall burner box, manifold assembly and burner boxSL280UHV NOX Inserts Repair Parts List Planned ServiceIntegrated Control Diagnostic Codes Integrated Control Diagnostic ModesFurnace / air handler. Clears after fault recovered Normal operation 5 seconds after fault recoveredPower at the thermostat. Alert stops all services Equipment is unable to communicate. IndicatesMissioning and Execute ’Set Factory Default mode’ Reconfigure the system. Replace control if heatingControl will still operate on default parameter set Ate feature will be set as ’installed’ and that couldSumes normal operation after fault is cleared Low pressure switch failed openFault is cleared Tion after fault is clearedOut. Clears when flame has been proven stable Open or not within specifications −hour soft lockSoft lockout or reset To flame failureIs not running. Check power to outdoor unit. Clears Pair/add duct. Cleared after the current service deError after current is sensed in both RUN Vice is removed, or after power resetSor run cycle, or after power reset Finished 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