Lennox International Inc MERIT SERIES GAS FURNACE DOWNFLOW AIR DISCHARGE, ML193DF

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TRAP / DRAIN ASSEMBLY USING 1/2" PVC OR 3/4" PVC

OPTIONAL Condensate Drain Connection

 

 

 

Adapter 1/2 inch slip X

 

 

 

Adapter 1/2 inch slip X

 

 

1/2 inch mpt (Not Furnished) Condensate Drain

1/2 inch mpt (Not Furnished)

 

 

Connection In Unit

90° Street Elbow

 

 

 

 

Vent

 

 

 

1 (25) Minimum

 

 

 

 

 

 

1/2 inch PVC

 

 

 

 

5 Feet

(Not Furnished)

 

 

Above Top of Condensate Drain

 

Maximum

 

 

 

 

Connection In Unit

 

 

Condensate Drain

 

 

90° Elbow 1/2 inch PVC

 

 

 

 

 

(Not Furnished)

 

 

Connection In Unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1/2 inch PVC Pipe

 

1/2 inch PVC Pipe

 

 

 

 

 

(Not Furnished)

OPTIONAL Drain Piping

(Not Furnished)

 

 

Coupling 1/2 inch slip X slip

Drain Assembly for 1/2 inch Drain Pipe

 

 

 

 

(Not Furnished)

 

 

 

1/2 inch PVC Pipe

 

 

 

 

 

(Not Furnished)

 

Drain Trap

1/2 inch PVC

 

 

 

 

 

 

 

90° Elbow

 

Assembly

(Furnished)

 

 

 

(Furnished)

 

 

 

1/2 inch PVC

 

 

 

 

 

 

To

To

(Not Furnished)

 

 

Drain

Drain

 

 

 

Drain Assembly for 3/4 inch Drain Pipe

 

 

 

 

 

 

 

 

 

Drain Trap

 

 

 

 

 

 

Clean Out

90° Elbow

 

 

90° Elbow

 

 

 

3/4 inch PVC

 

 

3/4 inch PVC

 

 

 

(Not Furnished)

 

(Not Furnished)

 

 

To

To

Coupling 3/4 inch slip X slip

 

 

Drain

Drain

 

(Not Furnished)

 

 

Drain Trap Assembly (Furnished)

Drain Trap Assembly with 1/2 inch Piping

1 inch (25mm) Minimum Above Top of Condensate Drain Connection In Unit

Vent

Drain Trap Assembly with 3/4 inch Piping

1 inch (25mm) Minimum Above Top of Condensate Drain Connection In Unit

Vent

7

(178)

Condensate Drain Connection In Unit

Condensate Drain Connection In Unit

To

To

Drain

Drain

FIGURE 45

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Image 29
Contents Table of Contents Installation Instructions ML193DFML193DF ML193DF Unit Dimensions − inches mmML193DF Parts Arrangement BAG AssemblyControl BOX Blower MotorDirect Vent Installation NON−DIRECT Vent Safety InformationML193DF Gas Furnace Shipping and Packing ListUse of Furnace as Construction Heater Combustion, Dilution & Ventilation Air GeneralEquipment in Confined Space − ALL AIR from Inside Equipment in Confined Space − ALL AIR from Outside Shipping Bolt RemovalFront Horizontal Back Installation − Setting EquipmentSetting Equipment NC‡ NON−COMBUSTIBLE Floor Opening Size− Seal the cabinet and check for air leaks Combustible Flooring Base Opening SizeSide View Piping and Fittings Specifications Pipe & Fittings SpecificationsFilters Duct SystemOutdoor Termination Kits Usage Venting Practices Joint Cementing ProcedurePiping Suspension Guidelines ScheduleML193DF MIN. Vent Length Model Vent Piping GuidelinesMinimum Vent Pipe Lengths Maximum Allowable Intake or Exhaust Vent Length in Feet Intake Exhaust Typical Exhaust Pipe ConnectionsTypical Intake Pipe Connections Typical AIR Intake Pipe Connections Inches 305mm or 12 in mm Inside Corner DetailUS Installations1 Canadian Installations2 FLUSH−MOUNT Side Wall Termination KIT 51W11 − On field supplied terminations, a minimum distanceDirect Vent Roof Termination KIT 51mm 76mm Vent Pipe Required to Adapt Reducer MAY beUnconditioned Space SupportTop View Front ViewExhaust NON−DIRECT Vent Roof Termination KIT 203mm − 305mmML193DF NON−DIRECT Vent Application Using Existing Chimney To drain ML193DF with Evaporator CoilTrap / Drain Assembly Using 1/2 PVC or 3/4 PVC Furnace Isolate GAS Valve Gas PipingGAS Pipe Capacity − FT3/HR kL/HR Electrostatic Discharge ESD Precautions and ProceduresElectrical Interior MAKE−UP BOX FACTORY− Installed Left Side MAKE−UPExterior MAKE−UP BOX BOX InsideThermostat Designations Typical ML193DF Field Wiring DiagramTypical ML193DF Wiring Diagram Unit Start−Up For Your Safety Read Before OperatingIntegrated Control Automatic Hot Surface Ignition SystemPage GAS Meter Clocking Chart Gas Pressure AdjustmentProper Combustion High Altitude Information73W37 73W81 68W68 74W90 74W91 69W73 2286 − 3038m2286m 3048m No Jumper Other Unit AdjustmentsHeat FAN-OFF Time in Seconds High Low In. w.g Cfm Watts Cfm Watts cfm Watts Blower DataElectrical SHOCK, Fire Or Explosion Hazard ServicePage Ignition Control Board Diagnostic Codes Planned ServiceDiagnostic Codes LED #1 Red LED #2 GreenHeating Sequence of Operation Troubleshooting Heating Sequence of OperationNormal Heating Mode Abnormal Heating Mode Heating Sequence Cooling Sequence of Operation Troubleshooting Cooling Sequence of OperationNormal Cooling Mode Abnormal Cooling Mode Continuous Heat Speed FAN Sequence of Operation Troubleshooting Continuous Fan Sequence of OperationRepair Parts List GAS Supply Start−Up & Performance Check ListReturn AIR Duct System Supply AIR Duct Intake / Exhaust PipeTotal External Static Drain Line Temperature RiseCondensate Line Thermostat Vent PipeLY BELOW. Keep Clear of ALL OBSTRUC- Tions Requirements for Commonwealth of Massachusetts