Lennox International Inc CONDENSING UNITS Removing and Installing Louvers, Placing Unit on Slab

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PLACING UNIT ON SLAB

When installing unit at grade level, the top of the slab should be high enough above grade so that water from higher ground will not collect around the unit. The slab should have a slope tolerance as described in figure 5, detail B.

ROOF MOUNTING

Install the unit at a minimum of 4 inches (102 mm) above the surface of the roof. Ensure the weight of the unit is properly distributed over roof joists and rafters. Redwood or steel supports are recommended.

NOTICE

Roof Damage!

This system contains both refrigerant and oil. Some rubber roofing material may absorb oil and cause the rubber to swell when it comes into contact with oil. The rubber will then bubble and could cause leaks. Protect the roof surface to avoid exposure to refrigerant and oil during service and installation. Failure to follow this notice could result in damage to roof surface.

Removing and Installing Louvers

WARNING

To prevent personal injury, or damage to panels, unit or structure, be sure to observe the following:

While installing or servicing this unit, carefully stow all removed panels out of the way, so that the panels will not cause injury to personnel, nor cause damage to objects or structures nearby, nor will the panels be subjected to damage (e.g., being bent or scratched).

While handling or stowing the panels, consider any weather conditions, especially windy conditions, that may cause panels to be blown around and battered.

When removing the unit panels. Remove panel A first, then B, C and finally D. When reinstalling panels, reverse that order starting with panel D, C, B and finally A.

PANEL B

PANEL C

REMOVAL

STEP 1

TO REMOVE PANEL,

REMOVE MOUNTING

SCREWS SECURING

PANEL TO THE UNIT.

PANEL A

STEP 2

SLIGHTLY LIFT PANEL A IN

ORDER TO CLEAR SIDE

LIPS OF PANEL FROM

BASE OF UNIT.

STEP 3

TILT PANEL OUT SLIGHTLY

AND PULL DOWNWARD

TO REMOVE.

REPEAT STEPS 1, 2 AND 3 TO REMOVE PANELS B, C AND FINALLY D.

PANEL A

WARNING

PANEL A

INSTALLATION

STEP 1

STARTING WITH PANEL D,

TOP CAP

 

INSERT PANEL UNDER UNIT

 

TOP CAP LIP AND LIFT

 

SLIGHTLY TO CLEAR SIDE LIP

 

OF PANEL FROM BASE.

 

STEP 2

MOVE PANEL IN TOWARDS UNIT.

ALIGN LEFT/RIGHT SIDE LIPS OF

PANEL WITH GROOVE INSERTS

ALONG LEFT/RIGHT SIDE OF UNIT.

SIDE

GROOVE

STEP 3

SECURE PANEL, WITH

MOUNTING SCREWS.

REPEAT STEPS 1 AND 2 TO

 

INSTALL PANELS C, B AND

BASE

FINALLY A.

 

PANEL D

PANEL D

Figure 6. Louvers

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506645−01

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Contents Table of Contents Shipping and Packing ListGeneral Condensing UnitsUnit Dimensions − Inches mm Side ViewTypical Unit Parts Arrangement Model Number Identification AC X −024 − 230 −13Operating Manifold Gauge Set and Service Valves Using Manifold Gauge SETOperating Service Valves Torque Requirements11 12 98 7 6 Recovering Refrigerant from Existing System 1DISCONNECT PowerRecovering Refrigerant 2CONNECT Manifold Gauge SETNew Unit Placement Clearance on ALL Sides Minimum Clearance Above UnitMinimum Clearance Between TWO Units Positioning ConsiderationsRemoving and Installing Louvers Placing Unit on SlabRoof Mounting StepNew or Replacement Line Set Mineral oils are not compatible with HFC−410A. If oilInstallation Refrigerant Line SET AllingVertical Runs NEW Construction Shown Refrigerant Line SET From Vertical to HorizontalBrazing Connections Brazing Procedures 1CUT and DeburWrap Service Valves Flow Nitrogen6BRAZE Line SET 7PREPARATION for Next Step2CONNECT Gauges and Equipment for Flushing Procedure Flushing Line Set and Indoor CoilInstalling Indoor Metering Device Indoor Expansion Valve InstallationSensing Bulb 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 Connections for Testing and Charging Servicing Units Delivered Void of ChargeUnit Start−Up 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 Unit Components MaintenanceSystem Operation Homeowner Start−Up and Performance Checklist