Lenox ML180UHE Horizontal Application, Left−Side Air Discharge, Right−Side Air Discharge

Page 24

 

Left Side Piping

 

 

MANUAL

 

(Standard)

 

 

 

 

AUTOMATIC

MAIN SHUT−OFF

 

 

 

MANUAL

 

 

VALVE

 

 

GAS VALVE

MAIN SHUT−OFF

 

 

(With 1/8 in. NPT

 

AUTOMATIC

 

VALVE

 

 

Plugged Tap

 

GAS VALVE

 

(With 1/8 in. NPT

 

 

Shown)

 

 

 

Plugged Tap Shown)

 

 

 

GROUND

 

 

 

 

JOINT

 

 

 

 

UNION

GROUND

 

 

 

 

JOINT

 

 

 

 

UNION

 

 

 

DRIP LEG

 

 

 

 

 

FIELD

Right Side Piping

 

(Alternate)

 

PROVIDED

DRIP LEG

AND INSTALLED

 

NOTE − BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET

FIGURE 26

Horizontal Applications

Possible Gas Piping Configurations

 

MANUAL

 

MAIN SHUT−OFF

 

VALVE

MANUAL

 

MAIN SHUT−OFF

Horizontal Application

VALVE

Left−Side Air Discharge

 

 

GROUND

 

JOINT

 

UNION

GROUND

 

JOINT

DRIP LEG

UNION

 

DRIP LEG

 

 

 

MANUAL

 

 

MAIN SHUT−OFF

 

 

VALVE

 

 

GROUND

 

 

JOINT

 

FIELD

UNION

 

 

 

PROVIDED

 

Horizontal Application

AND INSTALLED

 

 

 

Right−Side Air Discharge

NOTE − BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET

DRIP LEG

FIGURE 27

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Contents Installation Instructions ML180UHE Table of ContentsUnit Dimensions − inches mm TOP ViewParts Arrangement Make−Up Box Heat Exchanger Combustion Air InducerBurner Box Gas ValveSafety Information ML180UHE Gas FurnaceShipping and Packing List Use of Furnace as Construction Heater GeneralCombustion, Dilution & Ventilation Air Equipment in Confined Space ALL AIR from Inside Equipment in Confined Space Setting Equipment Return Air Horizontal Application Installation Clearances Top Left RightEnd Bottom Typical Horizontal ApplicationFilters Duct SystemVenting Upflow PositionTop Vent Discharge Left Side Vent DischargeHorizontal Left Position Horizontal Right Position Horizontal Left PositionSide Vent Discharge Side Vent Discharge − no modifications necessaryVent Connection Upflow and Horizontal Position Common Venting Using Metal−Lined Masonry Chimney −1/2 Cated or common venting system, you must inspect 18 − The common vent diameter must always be at least asFeet 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 Gas supply piping should not allow more than 0.5W.C. dropHorizontal Application Left−Side Air DischargeRight−Side Air Discharge Interior MAKE−UP BOX Installation ElectricalElectrostatic Discharge ESD Thermostat Designations ML180UHE Schematic Wiring Diagram and Sequence of Operation Typical ML180UHE Field Wiring Diagram Integrated ControlFor Your Safety Read Before Lighting Unit Start−UpGas Pressure Adjustment GAS Meter Clocking ChartProper Combustion High AltitudeOther Unit Adjustments Manifold Pressure Settings at all AltitudesHeat FAN-OFF Time in Seconds No Jumper1380 995975 115 945 1345Single Side Return Air − Air volumes in bold require field Order to maintain proper air velocity640 1940 420 1750 310 230Service Electrical SHOCK, Fire Or Explosion HazardML180UHE BURNER, Combustion AIR Inducer Assembly Heat Exchanger Removal−090, −110 −135 units −045 and −070 unitsPlanned Service Repair Parts ListIntegrated Control Diagnostic Codes RED LEDNormal Heating Mode Abnormal Heating Mode Heating Sequence of OperationHeating Sequence Normal Cooling Mode Abnormal Cooling Mode Cooling Sequence of OperationContinuous FAN Sequence of Operation Start−Up & Performance Check List Cooling Mode Temperature RiseUnit Operation Drain Line