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Lennox International Inc ML193UH Start-Up& Performance Check List UNIT SET UP, Serial Number

Models: Lennox Merit Series Gas Furnace Upflow/Horizontal Air Discharge ML193UH

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Start-Up & Performance Check List

UNIT SET UP

Furnace:

Model Number_______________

Serial Number_________________

Line Voltage

SUPPLY

AIR

1GAS SUPPLY

Natural Gas

LP Propane Gas

	Piping Connections Tight
	Leak Tested
2	Supply Line Pressure “W.C.________
	Supply Line Pressure “W.C.________
	1
	Gas Supply Pressure
	1

Flter

RETURN AIR

3DUCT SYS

TEM

SUPPLY AIR DUCT

Sealed

Insulated (if necessary)

2INTAKE / EXHAUST

PIPE

All Joints Primed and Glued

Terminations Installed Properly

Horizontal Pipes Sloped (if applicable)

Condensate Trap Primed / Line Sloped

Pipes Sup

ported

Heat Cable Installed and Operable (if applicable)

RETURN DUCT

Sealed

Filter Installed and Clean

Grilles Unobstructed

4VOLTAGE CHECK Supply Voltage _____

Electrical Connections Tight

Page 48

Image 48

Lennox International Inc ML193UH Start-Up& Performance Check List UNIT SET UP, Furnace Model Number, Serial Number, ported

Contents

Table of Contents INSTALLATION INSTRUCTIONS ML193UH2P0813 P507121-01ML193UH Unit Dimensions - inches mm SUPPLY AIROPENING ML193UHSafety Information DANGERML193UH Gas Furnace Shipping and Packing ListInstallation Locations Installed in Combination with a Cooling CoilUse of Furnace as Construction Heater General Combustion, Dilution & Ventilation AirConfined Space Air from InsideUnconfined Space Air from Outside Installation - Setting Equipment Shipping Bolt RemovalUpflow Applications ML193UH090P48CSETTING EQUIPMENT UPFLOW APPLICA TIONHORIZONTAL APPLICATION FRONT VIEWReturn Air Guidelines Side Return Air with transition and filterHorizontal Applications Optional Return Air BaseUpflow Applications Only Removing the Bottom PanelHorizontal Application Installation Clearances FIGURE Suspended Installation of Horizontal UnitPlatform Installation of Horizontal Unit HORIZONTAL SUSPENSION KITPipe & Fittings Specifications FiltersDuct System FIGURE Return Air --Horizontal ApplicationsTABLE PIPING AND FITTINGS SPECIFICATIONS Joint Cementing Procedure TABLE OUTDOOR TERMINATION USAGEDANGER DANGER OF EXPLOSIONVenting Practices Piping Suspension GuidelinesWall Thickness Guidelines FIGURE Exhaust Piping Figures 24 andVent Piping Guidelines Exhaust PipePiping Size Process FIGURE TABLE MINIMUM VENT PIPE LENGTHSAttic or Crawl Space For Intake Air in Feet Standard Termination at Elevation 0 - 10,000Number Of 2” PipeNON-DIRECTVENT APPLICATIONS NON-DIRECTVENT APPLICATIONSPipe size determined in table RIGHT HAND DISCHARGE SHOWNAPPLICATIONS Pipe size determined in tableRIGHT HAND DISCHARGE SHOWN Intake Piping TYPICAL AIR INTAKE PIPE CONNECTIONSTYPICAL AIR INTAKE PIPE CONNECTIONS General Guidelines for Vent Terminations For Canadian Installations OnlyWinter Design Vent PipeUnit Input Size Temperatures1 F CVENT TERMINATION CLEARANCES INSIDE CORNER DETAILVENT TERMINATION CLEARANCES INSIDE CORNER DETAILFIGURE Exiting Exhaust and Intake Vent different pressure zonesFIGURE Exiting Exhaust and Intake Vent different pressure zonesSide View FIELD FABRICATED WALL TERMINATION USING EXISTING CHIMNEY ML193UH DIRECT VENT APPLICATIONML193UH NON-DIRECTVENT APPLICATION FIGURE Condensate PipingField Provided Drain Components Coil Using A Separate Drain Condensate Trap With Optional Overflow SwitchTo Drain FIGURE ML193UH With EvaporatorML193UH with Evaporator Coil Using a Common Drain IMPORTAN TML193UH with Evaporator Coil Using a Common Drain Drain ConnectionTRAP / DRAIN ASSEMBLY USING 1/2” PVC OR 3/4” PVC 1/2 inch3/4 inch LOW INLET PRESSURE SWITCH Gas PipingS145 LOCATION Leak CheckPossible Gas Piping Configurations Horizontal ApplicationsLeft Side Piping Standard Right Side Piping AlternateTABLE GAS PIPE CAPACITY - FT3/HR kL/HR Removal of the Furnace from Common VentCARBON MONOXIDE POISONING HAZARD Precautions and Procedures INTERIOR MAKE-UPBOX INSTALLATIONAccessory Terminals ElectricalTYPICAL ML193UH WIRING DIAGRAM Generator Use - Voltage RequirementsIntegrated Control Diagnostic Codes DIAGNOSTIC CODESIntegrated Control INTEGRATED CONTROLUnit Start-Up Placing the furnace into operationPriming Condensate Trap Gas Valve Operation FigureGas Pressure Adjustment GAS METER CLOCKING CHARTFailure To Operate Heating Sequence Of OperationProper Combustion High Altitude InformationML193 UnitCARBON MONOXIDE POISONING HAZARD Other Unit Adjustments Flame Rollout Switches TwoPressure Switch Primary LimitTwinning the ML193UH FIELD WIRING FOR TWINNINGService Cleaning the Burner AssemblyBlower FiltersRepair Parts List Cabinet PartsHeating Parts Control Panel PartsStart-Up& Performance Check List UNIT SET UP Terminations Installed ProperlyHeat Cable Installed and Operable if applicable RETURN DUCT Sealed Filter Installed and CleanAdjusted and Programmed UNIT OPERATIONHEATING MODE COOLING MODERequirements for Commonwealth of Massachusetts Modifications to NFPA-54,ChapterEXEMPTIONS The following equipment is exempt from 24 CMR 5.082a 1 throughPage

Start-Up & Performance Check List

Furnace:

Serial Number_________________

Line Voltage

1GAS SUPPLY

Natural Gas

LP Propane Gas

Piping Connections Tight

Leak Tested

Supply Line Pressure “W.C.________

3DUCT SYS­

Insulated (if necessary)

2INTAKE / EXHAUST

All Joints Primed and Glued

Terminations Installed Properly

Horizontal Pipes Sloped (if applicable)

Condensate Trap Primed / Line Sloped

ported

Heat Cable Installed and Operable (if applicable)

RETURN DUCT

Grilles Unobstructed

4VOLTAGE CHECK Supply Voltage _____

Electrical Connections Tight

3DUCT SYS