Carrier 48EZ(N)-A Field Fabricate Ductwork, Provide Clearances, Rig and Place Unit, Inspection

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CAUTION - NOTICE TO RIGGERS PRUDENCE - AVIS AUX MANIPULATEUR

ACCESS PANELS MUST BE IN PLACE WHEN RIGGING.

PANNEAUX D'ACCES DOIT ÊTRE EN PLACE POUR MANIPULATION.

Use top skid as spreader bar. / Utiliser la palette du haut comme barre de répartition

DUCTS

MINIMUM HEIGHT: 36" (914.4 mm)

HAUTEUR MINIMUM

48EZ -- A

 

 

 

 

BANDE SCELLANT DOIT ÊTRE

 

 

 

 

 

 

SEAL STRIP MUST BE IN

UNIT HEIGHT

PLACE BEFORE PLACING

EN PLACE AVANT DE PLACER

HAUTEUR D'UNITÉ

UNIT ON ROOF CURB

L'UNITÉ SUR LA BASE DE TOIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DETAIL A

 

 

 

 

 

 

 

 

 

 

 

 

 

SEE DETAIL A

 

 

 

 

 

 

 

VOIR DÉTAIL A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VOIR DÉTAIL A

 

 

 

 

 

 

 

 

 

 

 

 

 

50CY502286 2.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A09051

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RIGGING WEIGHTS (SMALL CABINET)

 

 

 

 

 

 

RIGGING WEIGHTS (LARGE CABINET)

 

 

 

Unit

 

24

 

 

30

 

36

 

Unit

 

 

42

 

48

 

 

60

 

lb

 

kg

lb

 

kg

lb

 

kg

 

 

lb

 

kg

lb

 

kg

 

lb

 

kg

 

 

 

 

 

 

 

 

 

 

 

 

Rigging

359

 

163

373

 

169

379

 

172

 

Rigging

 

461

 

209

482

 

219

 

507

 

230

Weight

 

 

 

 

 

Weight

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE: See dimensional drawing for corner weights.

Fig. 5 - 48EZ-A Suggested Rigging

Step 3 — Field Fabricate Ductwork

Secure all ducts to roof curb and building structure on vertical discharge units. Do not connect ductwork to unit. For horizontal applications, unit is provided with flanges on the horizontal openings. All ductwork should be secured to the flanges. Insulate and weatherproof all external ductwork, joints, and roof openings with counter flashing and mastic in accordance with applicable codes.

If a plenum return is used on a vertical unit, the return should be ducted through the roof deck to comply with applicable fire codes.

See unit rating plate for any required clearances around ductwork. Cabinet return-air static shall not exceed -.25 IN. W.C.

Step 4 — Provide Clearances

The required minimum operating and service clearances are shown in Fig. 2 and 3.

IMPORTANT: Do not restrict outdoor airflow. An air restriction at either the outdoor-air inlet or the fan discharge may be detrimental to compressor life.

The condenser fan pulls air through the condenser coil and discharges it through the top grille. Be sure that the fan discharge does not recirculate to the condenser coil. Do not locate the unit in either a corner or under an overhead obstruction. The minimum clearance under a partial overhang (such as a normal house overhang) is 48-in. (1219 mm) above the unit top. The maximum horizontal extension of a partial overhang must not exceed 48-in. (1219 mm).

Do not place the unit where water, ice, or snow from an overhang or roof will damage or flood the unit. Do not install the unit on carpeting or other combustible materials. The unit may be installed on Class A, B, or C roof covering materials. Slab mounted units should be at least 4-in. (102 mm) above the highest expected water and runoff levels. Do not use unit if it has been under water.

Step 5 — Rig and Place Unit

!WARNING

PERSONAL INJURY OR PROPERTY DAMAGE HAZARD

Failure to follow this warning could result in personal injury, death or property damage.

When installing the unit on a rooftop, be sure the roof will support the additional weight.

Rigging and handling of this equipment can be hazardous for many reasons due to the installation location (roofs, elevated structures, etc.).

Only trained, qualified crane operators and ground support staff should handle and install this equipment.

When working with this equipment, observe precautions in the literature, on tags, stickers, and labels attached to the equipment, and any other safety precautions that might apply.

Training for operators of the lifting equipment should include, but not be limited to, the following:

1.Application of the lifter to the load, and adjustment of the lifts to adapt to various sizes or kinds of loads.

2.Instruction in any special operation or precaution.

3.Condition of the load as it relates to operation of the lifting kit, such as balance, temperature, etc.

Follow all applicable safety codes. Wear safety shoes and work gloves.

Inspection

Prior to initial use, and at monthly intervals, all rigging shackles, clevis pins, and straps should be visually inspected for any damage, evidence of wear, structural deformation, or cracks. Particular attention should be paid to excessive wear at hoist

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Contents Table of Contents Safety ConsiderationsCheck Equipment Receiving and InstallationIntroduction Provide Unit Support48EZ-A24-36 Unit Dimensions 48EZ-A42-60 Unit Dimensions Roof Curb Dimensions NumberRig and Place Unit Field Fabricate DuctworkProvide Clearances InspectionConnect Condensate Drain Install Flue HoodInstall Gas Piping Rigging/Lifting of Unit See FigFire or Explosion Hazard Sediment TrapInstall Duct Connections Configuring Units for Downflow Vertical DischargePhysical Data Unit 48EZ-A Physical Data Unit 48EZ-A Cont’d Maximum Gas Flow CapacityHeating Inputs High-Voltage Connections Install Electrical ConnectionsSpecial Procedures for 208-V Operation Unit Component Damage HazardControl Voltage Connections Balance Point Setting-Thermidistat or Hybrid ThermostatPRE-START-UP Transformer ProtectionCheck for Refrigerant Leaks Start-up Heating and Make Adjust- mentsSTART-UP Unit Sequence of OperationAdjust Gas Input Check Gas InputUnit Damage Hazard Start-up Cooling and Make Adjust- ments Gas Heating Fan Speed Set-up Checking and Adjusting Refrigerant ChargeIndoor Airflow and Airflow Adjustments Unit Operation HazardTwo Cooling Fan Speeds Set-up Dehumidification feature used Continuous Fan OperationColor Coding for Indoor Fan Motor Leads Dry Coil Air Delivery* Horizontal Unit 48EZ-A24-60 Unit Heating Rise MotorRange Speed Color Dry Coil Air Delivery* Horizontal Discharge Unit 48EZ-A24-60 1354 1290 1226 1158 1102 1046 981 918 843 55oF Heating Rise Medium1 48EZ ---,NA48090 48EZ ---,NA48130 Unit Heating Rise Motor Wire Downflow Cooling Standard CFM Scfm Economizer + Tons Horizontal and Downflow Filter Pressure Drop Table IN. W.CUnit Standard CFM Scfm Size Cooling Standard CFM Scfm48EZ a 208/230-1-60 Ladder Wiring Diagram, Unit 48EZ-A 208/230-3-60 Connection Wiring Diagram, Unit 48EZ-A Cont. 208/230-3-60 Ladder Wiring Diagram, Unit 48EZ-A Cooling Charging Table-Subcooling Air Filter MaintenanceCleaning the Blower Motor and Wheel Indoor Blower and MotorBurner Ignition Limit SwitchInduced Draft combustion air Blower Assembly Main BurnersElectrical Controls and Wiring Outdoor FanRefrigerant Circuit Gas Input Pressure SwitchesLoss of Charge Switch Indoor AirflowHigh-Pressure Switch Copeland Scroll Compressor Puron RefrigerantExplosion Hazard Unit Operation and Safety Hazard Refrigerant SystemCompressor Oil Troubleshooting START-UP ChecklistPuronr R-410A Quick Reference Guide Troubleshooting Guide Cooling or Heat Pump Heating Mode Symptom Cause RemedyTroubleshooting Guide-Heating Troubleshooting Guide-LED Error CodesLED OFF Preliminary Information Model no TemperaturesRemove and Store in Job Files III. START-UP Electrical Supply Voltage Compressor Amps