Trane CAUC-C20 Manual del propietario

InstallationCAUC-IOM-7

Operation

Maintenance

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ProductAir Cooled Condenser

ModelCAUC

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Date October 2008

File No.SV-UN-S/S-CAUC-IOM-7 10/08

December 2001sedesrepuS

Remote Air Cooled Condensers

Models

"J" and Later Design Sequence

CAUC-C20 CAUC-C40

CAUC-C25 CAUC-C50

CAUC-C30 CAUC-C60

Note: The installation of this equipment must

comply with all National, State, and Local

Codes.

http://www.trane.com

Since the manufacturer has a policy of continuous product

improvement, it reserves the right to change specifications and

design without notice.

About The Manual

Literature Change History

CAUC-IOM-7 (December 2001)

First issue of manual; provides Installation, Operation, and

Maintenance instructions for “J” and later design sequence

on CAUC 20 through 60 Ton air cooled condensing units.

Overview of Manual

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 care-

fully reviewing the information within this manual and follow-

ing 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 diag-

nose and repair this equipment.

Note: The procedures discussed in this manual

should only be performed by qualified, experienced

HVAC technicians. 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.

Table of Contents

Section One

About The Manual

Literature Change History................................................2

Overview of Manual .........................................................2

Section Two

General Information

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

Unit Nameplate ................................................................4

Hazard Identification ........................................................4

Unit Description................................................................4

Unit Component Layout and "Shipwith" Locations..........5

Section Three

Installation

Unit Inspection .................................................................6

Unit Clearances ...............................................................6

Unit Dimensions & Weight Information............................6

Foundation .......................................................................6

Rigging ...........................................................................14

Unit Isolation ..................................................................15

Neoprene Isolators .....................................................15

Spring Isolators ..........................................................16

Leveling the Unit ............................................................16

General Unit Requirements ...........................................17

Refrigerant Piping.......................................................17

Main Electrical Power Requirements .........................17

Field Installed Control Wiring .....................................17

Refrigerant Piping ..........................................................18

Liquid Lines ................................................................18

Liquid Line Components ............................................18

Discharge (Hot Gas) Lines.........................................18

Discharge Line Components......................................19

Making Refrigerant Connections ...................................19

Brazing Procedures .......................................................19

Leak Testing Procedure .................................................20

Field Installed Power Wiring ..........................................20

Main Unit Power Wiring..............................................20

Field Installed Control Wiring .....................................23

CCAD Package Chiller Interface................................23

Section Four

System Pre-Start Procedures

System Evacuation Procedures.....................................26

Voltage Imbalance .........................................................28

Electrical Phasing ..........................................................28

Section Five

System Start-Up

Sequence of Operation ..................................................29

Verifying Proper Condenser Fan Rotation.....................30

All Fans are Rotating Backwards;..............................30

Some Fan Rotating Backwards..................................30

Low Ambient Damper Adjustment .................................31

Charging the System .....................................................31

Section Six

Service and Maintenance

Monthly Maintenance.....................................................38

Coil Cleaning..................................................................39

Index ..................................................................................40

General Information

Model Number Description

All Trane 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 below. Its use will enable the owner/operator, in-

stalling contractors, and service engineers to define the op-

eration, specific components, and other options for any spe-

cific 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 name-

plate.

Sample Model No.: CAUC - C60 4 - 2 A 1 0 H, etc.

Digit No.: 1 2 3 4 5,6,7 8 9 10 11 12 13 +

Digit 1 - Unit Type Digit 8 - Power Supply Digit 11 - Ambient Control

C=Condenser G= 200/230/60/3 XL 0 =Standard

4 = 460/60/3 XL 1 = 0

Digit 2 - Condenser 5 = 575/60/3 XL

A= Air Cooled Digit 12 - Agency Approval

Digit 9 - Condenser Circuit 0 =None

Digit 3 - Air Flow 1 =Single 3 =UL /CSA

U = Up Flow 2 = Dual Digit 13 - Miscellaneous Options,etc.

Digit 4 - Development Sequence Digit 10 - Design Sequence H = Copper Fins

C = Third J = Disconnect Redesign 1 = Spring Isolators

2 = Rubber Isolators

Digits 5,6,7 - Nominal Capacity 9 = Packed Stock

C20 = 20 Tons

C25 = 25 Tons

C30 = 30 Tons

C40 = 40 Tons

C50 = 50 Tons

C60 = 60 Tons

Unit Nameplate

One Mylar unit nameplate is located on the outside upper

right corner of the control panel door. It includes the unit

model number, serial number, electrical characteristics,

weight, refrigerant charge, as well as other pertinent unit

data. A small metal nameplate with the Model Number, Se-

rial Number, and Unit Weight is located just above the Mylar

nameplate, and a third nameplate is located on the inside of

the control panel door.

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 name-

plate.

Hazard Identification

Warnings are provided through-

out this manual to indicate to installing contractors, opera-

tors, and service personnel of potentially hazardous situa-

tions which, if not avoided, COULD result in death or seri-

ous injury.

Cautions are provided throughout

this manual to indicate to installing contractors, operators,

and service personnel of potentially hazardous situations

which, if not avoided, MAY result in minor or moderate in-

jury.

Unit Description

All air cooled condensing units are designed for outdoor in-

stallations with vertical air discharge. These units may be

installed on a flat roof or placed on a concrete slab at

ground level.

Before shipment, each unit is leak-tested, evacuated, a Ni-

trogen holding charge is added, and the controls are tested

for proper operation.

The condenser coils are aluminum fin, bonded to copper

tubing. Copper-fin coils are optional. Louvered condenser

grilles for coil protection are standard.

Direct-drive, vertical discharge condenser fans are provided

with built-in current and overload protection.

For “Shipwith” items, refer to the Unit Component “Layout”

and “Shipwith” Locations illustration.

If low ambient operation is required, low ambient dampers

are available as a field or factory installed option.

The unit control panel contains all required fan cycling con-

trols, compressor interlocks, and a 115 volt control power

transformer. Field wiring, electrical schematics and panel

connection diagrams are located inside the control panel

access door.

General Information (Continued)

Unit Component “Layout” and “Shipwith” Locations

(60 Ton Unit Illustrated)

Installation

Unit Inspection

As soon as the unit arrives at the job site

[ ] Verify that the nameplate data matches the data on the

sales order and bill of lading (including electrical data).

[ ] Verify that the power supply complies with the unit name-

plate specifications.

[ ] Visually inspect the exterior of the unit, including the roof,

for signs of shipping damage.

[ ] Check for material shortages. Refer to the Component

Layout and Shipwith Location illustration.

If the job site inspection of the unit reveals damage or mate-

rial shortages, file a claim with the carrier immediately.

Specify the type and extent of the damage on the "bill of

lading" before signing.

[ ] Visually inspect the internal components for shipping

damage as soon as possible after delivery and before it

is stored. Do not walk on the sheet metal base pans.

NO STEP SURFACE!

FOR ACCESS TO COMPONENTS, THE BASE SHEET

METAL SURFACE MUST BE REINFORCED.

Bridging between the unit's main supports may con-

sist of multiple 2 by 12 boards or sheet metal grating.

Failure to comply can cause severe personal injury

or death from falling.

[ ] If concealed damage is discovered, notify the carrier's

terminal of damage immediately by phone and by mail.

Concealed damage must be reported within 15 days.

Request an immediate joint inspection of the damage by

the carrier and the consignee. 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 appropriate Trane office before installing or re-

pairing a damaged unit.

Unit Clearances

Figure 3-1 illustrates the minimum operating and service

clearances for either a single, multiple, or pit application.

These clearances are the minimum distances necessary to

assure adequate serviceability, cataloged unit capacity, and

peak operating efficiency.

Providing less than the recommended clearances may re-

sult in condenser coil starvation or recirculation of hot con-

denser air.

Locate the unit as close to the applicable system support

equipment as possible, to minimize refrigerant piping

lengths.

Unit Dimensions & Weight Information

Overall unit dimensional data for each unit is illustrated in

Figure 3-2.

A Center-of-Gravity illustration and the dimensional data is

shown in Figure 3-3.

Table 3-1 lists the typical unit operating and point loading

weights.

Foundation

If the unit is installed at ground level, elevate it above the

snow line. Provide concrete footings at each support loca-

tion or a slab foundation for support. Refer to Table 3-1 for

the unit operating and point loading weights when con-

structing the footing foundation.

Anchor the unit to the footings or slab using hold down bolts

or isolators. Isolators should be installed to minimize the

transmission of vibrations into the building. Refer to the

“Unit Isolation” section for spring or rubber isolator installa-

tion instructions.

For rooftop applications, ensure the roof is strong enough to

support the unit. Refer to Table 3-1 for the unit operating

weights.

Anchor the unit to the roof with hold-down bolts or isolators.

Follow the instructions under “Unit Isolation” for proper iso-

lator placement and installation.

Check with a roofing contractor for proper waterproofing

procedures.

Installation (Continued)

Figure 3-1

Typical Installation Clearances for Single, Multiple or Pit Applications

Figure 3-2

CAUC-C20 Unit Dimensional Data & Recommended Clearances

Figure 3-2 (Continued)

CAUC-C25 Unit Dimensional Data & Recommended Clearances

Figure 3-2 (Continued)

CAUC-C30 Unit Dimensional Data & Recommended Clearances

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