Lennox International Inc CONDENSING UNITS Installation, Refrigerant Line SET Alling

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LINE SET

 

 

 

IMPORTANT Refrigerant lines must not contact structure.

 

 

 

 

 

INSTALLATION

 

 

 

Line Set Isolation

 

REFRIGERANT LINE SET ALLING

 

VERTICAL RUNS (NEW CONSTRUCTION SHOWN)

examples of proper refrigerant line set isolation:

 

 

REFRIGERANT LINE SET

FROM VERTICAL TO HORIZONTAL

ANCHORED HEAVY NYLON

 

WIRE TIE OR AUTOMOTIVE

AUTOMOTIVE

MUFFLER-TYPE HANGER

MUFFLER-TYPE HANGER

NOTE Insulate liquid line when it is routed through areas where the surrounding ambient temperature could become higher than the temperature of the liquid line or when pressure drop is equal to or greater than 20 psig.

IMPORTANT Refrigerant lines must not contact wall

OUTSIDE WALL

VAPOR LINE

LIQUID LINE

 

 

 

WALL

STUD

STRAP LIQUID LINE TO

VAPOR LINE

LIQUID LINE

NON−CORROSIVE

METAL SLEEVE

VAPOR LINE − WRAPPED

IN ARMAFLEX

REFRIGERANT LINE SET ALLING

HORIZONTAL RUNS

To hang line set from joist or rafter, use either metal strapping material or anchored heavy nylon wire ties.

WOOD BLOCK

BETWEEN STUDS

WIRE TIE

INSIDE WALL

STRAP

NON−CORROSIVE

METAL SLEEVE

WIRE TIE

WOOD BLOCK

WIRE TIE

STRAP

SLEEVE

 

WIRE TIE (AROUND

 

VAPOR LINE ONLY)

8 FEET (2.43 METERS)

 

STRAPPING

 

MATERIAL (AROUND

 

VAPOR LINE ONLY)

 

FLOOR JOIST OR

 

ROOF RAFTER

TAPE OR

 

 

WIRE TIE

VAPOR LINE WRAPPED

WITH ARMAFLEX

OUTSIDE

WALL

LIQUID LINE

TAPE OR

WIRE TIE

FLOOR JOIST OR ROOF RAFTER

8 FEET (2.43 METERS)

NON−CORROSIVE

METAL SLEEVE

STRAP THE VAPOR LINE TO THE JOIST OR RAFTER AT 8 FEET (2.43 METERS) INTERVALS THEN STRAP THE LIQUID LINE TO THE VAPOR LINE.

PVC

CAULK

PIPE

 

FIBERGLASS

INSULATION

NOTE

to be installed on exterior of outside wall.

Figure 8. Line Set Installation Guidelines

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506645−01

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Contents General Table of ContentsShipping and Packing List Condensing UnitsUnit Dimensions − Inches mm Side ViewTypical Unit Parts Arrangement Model Number Identification AC X −024 − 230 −13Operating Service Valves Operating Manifold Gauge Set and Service ValvesUsing Manifold Gauge SET Torque Requirements11 12 98 7 6 Recovering Refrigerant Recovering Refrigerant from Existing System1DISCONNECT Power 2CONNECT Manifold Gauge SETMinimum Clearance Between TWO Units New Unit PlacementClearance on ALL Sides Minimum Clearance Above Unit Positioning ConsiderationsRoof Mounting Removing and Installing LouversPlacing Unit on Slab StepNew or Replacement Line Set Mineral oils are not compatible with HFC−410A. If oilVertical Runs NEW Construction Shown InstallationRefrigerant Line SET Alling Refrigerant Line SET From Vertical to HorizontalBrazing Connections Brazing Procedures 1CUT and Debur6BRAZE Line SET Wrap Service ValvesFlow Nitrogen 7PREPARATION for Next Step2CONNECT Gauges and Equipment for Flushing Procedure Flushing Line Set and Indoor CoilSensing Bulb Installation Installing Indoor Metering DeviceIndoor Expansion Valve Installation Equalizer Line InstallationLeak Test Line Set and Indoor Coil Leak detector must be capable of sensing HFC refrigerantEvacuating Line Set and Indoor Coil Connect Gauge SETElectrical 24VAC TransformerSingle Phase High Voltage / Ground Wires LOW Voltage Control WiringTypical Factory Wiring Diagram Copeland Compressor Typical Factory Wiring Diagram Interlink Compressor Unit Start−Up Connections for Testing and ChargingServicing Units Delivered Void of Charge System RefrigerantChecking AIR Flow AT Indoor Coil Start Determine how refrigerant is meteredCalculating System Charge for Outdoor Unit Void of Charge BelowHFC−410A Subcooling TXV Charge Start Measure outdoor ambient temperature Superheat RFCProblem exists with some component in the system System Operation MaintenanceUnit Components Homeowner Start−Up and Performance Checklist
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