Lenox installation instructions Typical ML180UHE Field Wiring Diagram, Integrated Control

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TYPICAL ML180UHE FIELD WIRING DIAGRAM

 

 

FIGURE 33

 

 

 

 

TABLE 10

 

INTEGRATED CONTROL

1/4" QUICK CONNECT TERMINALS

(Automatic Hot Surface Ignition System)

120HUM

Humidifier 120VAC

 

 

 

 

LINE

120VAC

 

 

XFMR

Transformer 120VAC

 

 

CIRC

Indoor blower 120VAC

 

 

EAC

Indoor air quality accessory 120VAC

 

 

NEUTRALS

Common 120VAC

 

 

HUM24

Humidifier 24VAC

 

 

3/16" QUICK CONNECT TERMINALS

 

 

COOL

Cooling tap 24VAC

 

 

HEAT

Heating tap 24VAC

 

 

FAN

Continuous blower 24 VAC

 

 

PARK (no power)

Park terminal for speed taps

 

 

FLAME/FS

Flame sense

 

 

24 COM

Common 24VAC

RED LED

BLOWER OFF DELAY

 

 

RECALL BUTTON

 

 

FIGURE 34

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Image 28
Contents Installation Instructions ML180UHE Table of ContentsUnit Dimensions − inches mm TOP ViewParts Arrangement Make−Up Box Heat Exchanger Combustion Air InducerBurner Box Gas ValveML180UHE Gas Furnace Safety InformationShipping 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. dropLeft−Side Air Discharge Horizontal ApplicationRight−Side Air Discharge Electrical Interior MAKE−UP BOX Installation Electrostatic 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