Carrier 48TF004-007 specifications Installation, Start-Up, Service Instructions

Page 1

48TF004-007 Single-Package Rooftop Heating/Cooling Units

Installation, Start-Up, and

Service Instructions

CONTENTS

Page SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1

INSTALLATION

1-35

Step 1

— Provide Unit Support

. . . 1

•

ROOF CURB

 

•

SLAB MOUNT

 

Step 2

— Field Fabricate Ductwork

. . . 2

Step 3

— Install External Trap for Condensate

 

 

Drain

. . . 2

Step 4

— Rig and Place Unit

. . . 2

•POSITIONING

Step 5

— Install Flue Hood

4

Step 6

— Install Gas Piping

4

Step 7

— Make Electrical Connections

8

•FIELD POWER SUPPLY

•FIELD CONTROL WIRING

•HEAT ANTICIPATOR SETTINGS

Step 8 — Make Outdoor-Air Adjustments

and Install Outdoor-Air Hood. . . . . . . . . . . . . . . . . . 11

•MANUAL OUTDOOR-AIR DAMPER

•OPTIONAL DURABLADE ECONOMIZER

•OPTIONAL ECONOMI$ER

Step 9 — Adjust Evaporator-Fan Speed

19

•

DIRECT-DRIVE MOTORS

 

•

BELT-DRIVE MOTORS

 

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36-38 SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-43 TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 44-49 START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . CL-1

Disconnect gas piping from unit when leak testing at pressure greater than 1/2 psig. Pressures greater than 1/2 psig will cause gas valve damage resulting in hazardous condition. If gas valve is subjected to pres- sure greater than 1/2 psig, it must be replaced before use. When pressure testing field-supplied gas piping at pressures of 1/2 psig or less, a unit connected to such piping must be isolated by manually closing the gas valve.

Before performing service or maintenance operations on unit, turn off main power switch to unit and install a lock- out tag. Electrical shock could cause personal injury.

INSTALLATION

Unit is shipped in the vertical duct configuration. To convert to horizontal configuration, remove screws from side duct opening covers and remove covers. Using the same screws, in- stall covers on vertical duct openings with the insulation-side down. Seals around duct openings must be tight. See Fig. 1.

Confirm before installation of unit that voltage, amperage and circuit protection requirements listed on unit data plate agree with power supply provided.

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical compo- nents. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform basic maintenance func- tions of cleaning coils and filters and replacing filters. All other operations should be performed by trained service personnel. When working on air-conditioning equipment, observe precau- tions in the literature, tags and labels attached to the unit, and other safety precautions that apply.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have fire extinguishers available for all brazing operations.

Step 1 — Provide Unit Support

ROOF CURB — Assemble and install accessory roof curb in accordance with instructions shipped with curb. See Fig. 2. In- stall insulation, cant strips, roofing felt, and counter flashing as shown. Ductwork must be attached to curb, not to the unit. The accessory thru-the-bottom power and gas connection package must be installed before the unit is set on the roof curb. If field- installed (thru-the-roof curb) gas connections are desired, use factory-supplied 3/4-in. pipe coupling and gas plate assembly to mount the thru-the-roof curb connection to the roof curb. Gas connections and power connections to the unit must be field in- stalled after the unit is installed on the roof curb.

If electric and control wiring is to be routed through the basepan, attach the accessory thru-the-bottom service connec- tions to the basepan in accordance with the accessory installa- tion instructions.

IMPORTANT: The gasketing of the unit to the roof curb is critical for a watertight seal. Install gasket supplied with the roof curb as shown in Fig. 2. Improperly applied gasket can result in air leaks and poor unit performance.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book

1

4

PC 111

Catalog No. 534-80000

Printed in U.S.A.

Form 48TF-1SI

Pg 1

8-00

Replaces: New

Tab

1a

6a

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Contents Installation, Start-Up, Service Instructions Rig and Place Unit Inspect unit for Field Fabricate Ductwork Secure allRoof Curb Dimensions Install Gas Piping Unit is equipped for Install Flue Hood Flue hood is shippedUnit Size 48TF Physical Data 48TF004-007Furnace Section Base Unit Dimensions Steel Pipe Nominal Diameter Make Electrical ConnectionsFeet Or largerAHA Terminal BlockSupply Size Electrical DataType FLA RLA LRAPosition Setting Make Outdoor-Air Adjustments and Install Outdoor-Air HoodTypical Access Panel Locations Horizontal Discharge Block-Off Plate Wiring Connections for Outdoor-Air Thermostat Completed Hood Assembly EconoMi$er Wiring Wiring Diagram for Power Exhaust System Settings Default Potentiometer Settin gsPotentiometer Default Setting CO2 SP PPM Chan geover Set PointsDirect Drive Motor Mounting Adjust Evaporator-Fan Speed AdAccessory/FIOP Static Pressure* in. wg 48TF004-007 Fan Rpm at Motor Pulley SettingsMotor Data 48TF004 3 Tons Alternate Motor Belt Drive 48TF004 3 Tons Standard Motor Direct Drive48TF005 4 Tons Standard Motor Direct Drive 48TF004 3 Tons HIGH-STATIC Motor Belt Drive48TF005 4 Tons Alternate Motor Belt Drive 48TF006 5 Tons Alternate Motor Belt Drive 48TF006 5 Tons Standard Motor Direct Drive48TF006 5 Tons HIGH-STATIC Motor Belt Drive 48TF007 6 Tons Standard Motor Belt Drive 48TF007 6 Tons HIGH-STATIC Motor Belt Drive 149 109189 2291064 10281005 93848TF005 4 Tons Alternate Motor Belt Drive 48TF005 4 Tons HIGH-STATIC Motor Belt Drive 1700 811 494 865 567 1600 770 420 826 4831800 852 578 1900 894 5671600 826 483 931 641 1020 788 1101 956 1178 12211252 1700 865 567 966 725 1051 883 1133 1061 1205928 700 982 779 885 623 942 700971 787 1022 867 1015 891 1063 9982000 1022 867 1121 1014 1188 1097 1254 1216 1900 982 779 1084 932 1160 1006 1223 11142100 1063 998 1140 1064 1196 1272 1292 2200 1104 1081 1159 1106 1229 1258Altitude Compensation HeatingBtuh Nominal Nominal InputPage Service Lubrication Economizer Adjustment Refer to Optional EconoTON Unit Charging Chart TON Unit 60 Hz Charging Chart Cooling Charging Chart, 48TF006LED Indication Error Code Description LED Error Code DescriptionOFF FlashesBurner Tray Details Heating Service Analysis LED Error Code Service AnalysisProblem Cause Remedy LED OFFCooling Service Analysis IFC Durablade Economizer TroubleshootingEconoMi$er Troubleshooting Typical Wiring Diagram and Component Arrangement CAP SATSEN SW1Copyright 2000 Carrier Corporation Page Preliminary Information Remove and Use in Job File

48TF004-007 specifications

The Carrier 48TF004-007 is part of the brand's renowned rooftop unit series, designed to deliver efficient, reliable performance for commercial applications. Ideal for spaces such as offices, retail stores, and small manufacturing facilities, these units encapsulate advanced technology to enhance indoor air quality and optimize climate control.

One of the standout features of the Carrier 48TF004-007 units is their variable speed compressor technology. This innovation not only allows for precise temperature control but also reduces energy consumption by modulating the compressor's speed according to the cooling or heating demand. By operating at lower speeds during less demanding conditions, these units significantly decrease energy usage compared to traditional single-speed compressors, contributing to lower utility bills and a reduced carbon footprint.

Energy efficiency is further enhanced with the inclusion of high-performance scroll compressors, which are known for their reliable operation and quiet performance. Coupled with an Energy Efficiency Ratio (EER) that meets or exceeds industry standards, these systems are designed to offer economical operation without sacrificing comfort.

Incorporating smart controls and connectivity features, the Carrier 48TF004-007 units allow for easy integration into building management systems (BMS). This enhances the ability to monitor and manage energy usage in real time, further promoting efficiency. The units are also compatible with various thermostat options, allowing for user-friendly operation and customization of settings.

Another significant characteristic of the Carrier 48TF004-007 is its durable construction. Built with galvanized steel and powder-coated finishes, these units are designed to withstand the rigors of outdoor installation, ensuring long-lasting performance even in harsh weather conditions. Additionally, the units come equipped with advanced filtration systems that help improve indoor air quality by effectively removing dust, allergens, and other particulate matter from the air.

Maintenance is simplified with the Carrier 48TF004-007, providing easy access to vital components, which supports reduced downtime and service costs. The units also feature low operating sound levels, making them suitable for noise-sensitive applications.

In conclusion, the Carrier 48TF004-007 rooftop units stand out for their energy efficiency, advanced technology, durability, and ease of maintenance, making them an excellent choice for any commercial space looking to enhance comfort while effectively managing operational costs.
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