American Standard TWE075ADE, TWE120BE, TWE090AE, TWE200BDF, TWE050ADE User Manual

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Installation Operation Maintenance

Split System Cooling or Heat Pump Air Handler 7½ - 20 Tons

Model TWE

Models (60 Hz) Models (50 Hz)

TWE060A***E TWE050AD**E TWE060B***E TWE075AD**E TWE090A***E TWE100AD**E TWE090B***E TWE100BD**E TWE120A***F TWE155BD**E TWE120B***E TWE200BD**F TWE180B***E TWE240B***F

October 2006 TWE-SVX03C-EN

Preface and Warnings and Cautions

Literature Change History

TWE-SVX03A-EN (June 2003) Implemented Global Graphics format to IOM.

TWE-SVX03B-EN (April 2005) Added capacitor discharge warning.

TWE-SVX03C-EN (September 2006) Model number for 200 and 240 went to an "F".

TWE-SVX03C-EN (October 2006) Updated 200 and 240 unit dimensions.

Note: One copy of this document

ships inside the control panel of each unit and is customer property. It must be retained by the unit’s maintenance personnel.

This booklet describes proper installation, operation, and maintenance procedures for air cooled systems. By carefully reviewing the information within this manual and following the instructions, the risk of improper operation and/or component damage will be minimized.

It is important that periodic maintenance be performed to help assure trouble free operation. A maintenance schedule is provided at the end of this manual. Should equipment failure occur, contact a qualified service organization with qualified, experienced HVAC technicians to properly diagnose and repair this equipment.

Note: All phases of this installation

must comply with the NATIONAL, STATE & LOCAL CODES. In addition to local codes, the installation must conform with National Electric Code -ANSI/NFPA NO. 70 LATEST REVISION.

Note: Do Not release refrigerant

to the atmosphere! If adding or removing refrigerant is required, the service technician must comply with all federal, state, and local laws.

Warnings and Cautions

Notice that warnings and cautions appear at appropriate intervals throughout this manual. Warnings are provided to alert installing contractors to potential hazards that could result in personal injury or death, while cautions are designed to alert personnel to conditions that could result in equipment damage.

Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions.

NOTICE:

Warnings and Cautions appear at appropriate sections throughout this manual. Read these carefully.

 WARNING

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

 CAUTION

Indicates a potentially hazardous situations which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.

CAUTION

Indicates a situation that may result in equipment or property-damageonly accidents.

Contents

Model Number Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Unit Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Inspection Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Recommended t’stat wire size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Field Wiring Outdoor/Indoor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

TWE-SVX03C-EN 3

Model Number Description

TWE 090 A 1 00 E A

123 456 7 8 9 10 11 12

Model Number Description

All products are identified by a multiple-character model number that precisely identifies a particular type of unit. An explanation of the alphanumeric identification code is provided. Its use will enable the owner/operator, installing contractors, and service engineers to define the operation, specific components, and other options for any specific unit.

When ordering replacement parts or requesting service, be sure to refer to the specific model number, serial number, and DL number (if applicable) stamped on the unit nameplate.

DIGITS 1-3: PRODUCT TYPE

TWE = Split System Heat Pump/ Cooling Air Handler

DIGITS 4-6: NOMINAL GROSS COOLING CAPACITY (MBh)

060 = 5 Tons 090 = 7½ Tons 120 = 10 Tons 150 = 12½ Tons 180 = 15 Tons 240 = 20 Tons

DIGIT 7: MAJOR DEVELOPMENT SEQUENCE

A = Single

B = Dual

DIGIT 8: ELECTRICAL CHARACTERISTICS

1 = 208-230/60/1

3 = 208-230/60/3

4 = 460/60/3

W = 575/60/3

D = 380-415/50/3

K = 380/60/3

DIGITS 9, 10: FACTORY INSTALLED OPTIONS

00 = Packed Stock

DIGITS 11: MINOR DESIGN SEQUENCE

Current Design Sequence

DIGITS 12: SERVICE DIGIT

A = First

4 TWE-SVX03C-EN

General Information

General

This manual covers installation of the TWE050, 060, 075, 090,100 and 120A single circuit air handlers and TWE060, 075, 090, 100, 120, 155, 180, 200 and 240B dual circuit air handlers. These air handler models incorporate a single slab coil assembly, improved application flexibility, servicing, maintenance accessibility and an improved accessory line. They are fully convertible, (vertical to horizontal discharge) without field removal or reorientation of the coil assembly. They are shipped ready for horizontal installation.

The TWE090A300C, TWE090B300C, TWE120A300D, TWE120B300D models are shipped from the factory wired for 208-230V/3ph/60 Hz, but may be field converted for 460V/3ph/ 60 Hz applications by changing voltage plug on the motor. For voltage change plug instructions, refer to Figure 9.

All units (both single and dual circuit), have one drain pan that can be installed in any one of four positions. This allows for vertical or horizontal applications and right or left exit.

Note: The TWE060B, TWE090B,

TWE100B, and TWE120B dual circuit air handlers have a split face coil. When they are installed in either position, the lower half of the coil is designated as “Circuit A” and should always wet first.

The TWE155B, TWE180B, TWE200B dual circuit units have a mixed face coil.

Note: Note: The TWE050, 060, 075,

090, 100 and 120 air handlers have structural provisions to allow 180 degree rotation of discharge panel/blower assembly at installation. A reversible discharge wiring kit, BAYWRKT001A is available with instructions.

Installation procedures should be performed in the sequence that they appear in this manual. Do not destroy or remove the manual from the unit.

The manual should remain weatherprotected with the unit until all installation procedures are complete.

Note: It is not the intention of this

manual to cover all possible variations in systems that may occur or to provide comprehensive information concerning every possible contingency that may be encountered during an installation. If additional information is required or if specific problems arise that are not fully discussed in this manual, contact your local sales office.

Note: "Warnings" and "Cautions"

appear at appropriate places in this manual. Your personal safety and the proper operation of this machine require that you follow them carefully. The Company assumes no liability for installations or servicing performed by unqualified personnel.

Installation Checklist

An "Installation Checklist" is provided at the end of the installation section of this manual. Use the checklist to verify that all necessary installation procedures have been completed. Do not use the checklist as a substitute for reading the information contained in the manual. Read the entire manual before beginning installation procedures.

Unit Inspection

Inspect material carefully for any shipping damage. If damaged, it must be reported to, and claims made against the transportation company. Compare the information that appears on the unit nameplate with ordering and submittal data to insure the proper unit was shipped. Available power supply must be compatible with electrical characteristics specified on component nameplates. Replace damaged parts with authorized parts only.

Inspection Checklist

To protect against loss due to damage incurred in transit, complete the following checklist upon receipt of the unit.

[ ] Inspect individual pieces of the shipment before accepting the unit. Check for obvious damage to the unit or packing material.

[ ] Inspect the unit for concealed damage before it is stored and as soon as possible after delivery. Concealed damage must be reported within 15 days. If concealed damage is discovered, stop unpacking the shipment. Do not remove damaged material from the receiving location. Take photos of the damage if possible. The owner must provide reasonable evidence that the damage did not occur after delivery.

[ ] Notify the carrier’s terminal of damage immediately by phone and by mail. Request an immediate joint inspection of the damage by the carrier and the consignee.

[ ] Notify the sales representative and arrange for repair. Do not repair the unit until the damage is inspected by the carrier’s representative.

TWE-SVX03C-EN 5