Carrier 48EZ-A Rig and Place Unit, Provide Clearances, Personal Injury or Property Damage, Hazard

Page 6

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*For 460 Volt units add 14 lb (6.35 kg) to the rigging weight.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE: See dimensional drawing for corner weights.

 

 

Fig. 5 - 48EZ-A Suggested Rigging

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ducts passing through an unconditioned space must be insulated

 

Step 5 — Rig and Place Unit

 

 

 

 

and covered with a vapor barrier.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

!

 

WARNING

 

 

 

 

ducted through the roof deck to comply with applicable fire codes.

 

 

 

 

 

 

If a plenum return is used on a vertical unit, the return should be

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

See unit rating plate for any required clearances around ductwork.

 

PERSONAL INJURY OR PROPERTY DAMAGE

 

Cabinet return-air static shall not exceed -.25 IN. W.C.

 

 

 

 

HAZARD

 

 

 

 

 

 

 

 

 

 

 

 

Step 4 — Provide Clearances

 

 

 

 

 

 

 

 

 

Failure to follow this warning could result in personal

 

The required minimum operating and service clearances are shown

 

injury, death or property damage.

 

 

 

 

in Fig. 2 and 3.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

When installing the unit on a rooftop, be sure the roof will

 

IMPORTANT: Do

not restrict outdoor airflow. An air restriction

 

support the additional weight.

 

 

 

 

 

 

 

at either the outdoor-air

inlet or

the

fan

discharge

may

be

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rigging and handling

of

this

equipment can

be hazardous for

detrimental to compressor life.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

many reasons

due

to

the

installation location (roofs, elevated

The condenser

fan

pulls

air through

the

condenser

coil

and

 

 

structures, etc.).

 

 

 

 

 

 

 

 

 

 

 

discharges it through the top grille. Be sure that the fan discharge

 

 

 

 

 

 

 

 

 

 

 

 

 

Only trained, qualified crane operators and ground

support staff

does not recirculate to the condenser coil. Do not locate the unit in

 

 

should handle and install this equipment.

 

 

 

 

either a corner or under an overhead obstruction. The minimum

 

 

 

 

 

 

When working with this equipment, observe precautions in the

clearance under

a

partial

overhang

(such

as

a normal house

 

 

literature, on tags, stickers, and labels attached to the equipment,

overhang) is 48-in. (1219 mm) above the unit top. The maximum

 

 

and any other safety precautions that might apply.

 

 

 

horizontal extension of a partial overhang must not exceed 48-in.

 

 

 

 

 

Training for operators of the lifting equipment should include, but

(1219 mm).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Do not place the unit where water, ice, or snow from an overhang

 

not be limited to, the following:

 

 

 

 

 

 

 

 

1. Application of the lifter to the load, and adjustment of the

or roof will damage or flood the unit. Do not install the unit on

 

carpeting or other combustible materials. The unit may be installed

 

lifts to adapt to various sizes or kinds of loads.

 

 

 

on Class A, B, or C roof covering materials. Slab mounted units

 

2. Instruction in any special operation or precaution.

should be at least 4-in. (102 mm) above the highest expected water

 

3. Condition of the load as it relates to operation of the lifting

and runoff levels. Do not use unit if it has been under water.

kit, such as balance, temperature, etc.

 

 

Follow all applicable safety codes. Wear safety shoes and work

 

gloves.

6

Page 5 Page 7
Image 6
Page 5 Page 7
Contents Table of Contents Safety ConsiderationsCheck Equipment Receiving and InstallationIntroduction Provide Unit Support48EZ-A24-36 Unit Dimensions 48EZ-A42-60 Unit Dimensions Small Curb Personal Injury or Property Damage Rig and Place UnitProvide Clearances HazardConnect Condensate Drain Install Flue HoodInstall Gas Piping InspectionFire or Explosion Hazard Sediment TrapPhysical Data Unit 48EZ-A Unit Size 48EZPhysical Data Unit 48EZ-A Cont’d Maximum Gas Flow CapacityHeating Inputs Alternate Method Install Duct ConnectionsConfiguring Units for Downflow Vertical Discharge Unit Component Damage HazardSupply Duct Panels High-Voltage Connections Install Electrical ConnectionsSpecial Procedures for 208-V Operation Control Voltage ConnectionsTransformer Protection Balance Point Setting-Thermidistat or Hybrid ThermostatPRE-START-UP FIRE, EXPLOSION, Electrical Shock HazardCheck for Refrigerant Leaks Start-up Heating and Make Adjust- mentsSTART-UP Unit Sequence of OperationCheck Gas Input Adjust Gas InputCheck Heating Control Unit Damage HazardRollout Switch Airflow and Temperature RiseLimit Switches Check Burner FlameIndoor Airflow and Airflow Adjustments Start-up Cooling and Make Adjust- mentsChecking and Adjusting Refrigerant Charge Checking Cooling Control OperationContinuous Fan Operation Two Cooling Fan Speeds Set-up Dehumidification feature usedGas Heating Fan Speed Set-up Color Coding for Indoor Fan Motor LeadsFilter Pressure Drop Table IN. W.C 48EZ-A Wet Coil Pressure Drop IN. W.C741 638 547 415 Heating Low Blue 1234 1168 1093 1021 961 894 825 759 687 Heating Low Blue 1736 1695 1642 1601 1553 1512 1465 1427 1381 65oF Heating 1927 1893 1858 1824 1791 1759 1720 1689 1640 65oF Heating 48EZ a 208/230-3-60 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 CodesPreliminary Information Model no TemperaturesRemove and Store in Job Files III. START-UP Electrical Supply Voltage Compressor AmpsCatalog No 48EZ---06SI
Related manuals
Manual 10 pages 39.3 Kb

48EZ-A specifications

The Carrier 48EZ-A and 48VT-A are two advanced rooftop unit air conditioners that exemplify innovation and efficiency in HVAC technology. Designed for commercial applications, these units provide optimal comfort while ensuring energy conservation and reliability.

One of the standout features of the Carrier 48EZ-A is its high-efficiency cooling system. With SEER ratings reaching up to 16, this model uses advanced compressor technology to ensure that energy consumption stays low while maximizing cooling output. The 48EZ-A incorporates a two-stage scroll compressor that enhances performance during partial load conditions, making it ideal for varying temperature demands throughout the day.

Meanwhile, the Carrier 48VT-A is designed with variable speed technology that allows for precise modulation of airflow and cooling capacity, adapting seamlessly to real-time building conditions. This technology not only improves comfort but also significantly reduces energy usage by optimizing operational efficiency.

Both units are equipped with advanced microprocessor controls that facilitate superior management of the HVAC system. The controls offer programmable options allowing for enhanced control over system operation, scheduling, and diagnostics. This promotes easy maintenance and ensures long-term reliability.

In terms of construction, the Carrier 48EZ-A and 48VT-A units are built with corrosion-resistant materials, ensuring durability and longevity even in challenging environments. The cabinet is designed with insulated panels to minimize sound levels, making them suitable for installation in noise-sensitive locations.

Moreover, both models are equipped for easy installation and serviceability. The logical wiring design and access ports streamline maintenance, reducing downtime and optimizing overall performance. Additionally, they feature an energy-efficient fan design that maximizes airflow while minimizing energy use.

In summary, the Carrier 48EZ-A and 48VT-A rooftop units stand out in the HVAC market for their energy efficiency, advanced technology, and durable construction. These features make them ideal choices for various commercial applications where comfort, efficiency, and reliability are paramount. The combination of high-performance components and user-friendly features positions these models as leaders in modern HVAC solutions.
Top Page Image Contents