Carrier 19XL series Manual de usuario

19XL

50/60 Hz

Hermetic Centrifugal Liquid Chillers

with HCFC–22 and HFC–134a

Installation Instructions

For Units Produced After 11/1/92 (Linear Float Design)

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

without incurring obligations.

Catalog No. 531-944 9-94 Form 19XL-3SI Replaces: 19XL-2SI

Safety Considerations

Centrifugal liquid chillers are designed to provide safe and reliable service when

operated within design specifications. When operating this equipment, use good

judgement and safety precautions to avoid damage to equipment and property or injury

to personnel.

Be sure you understand and follow the procedures and safety precautions contained

in the machine instructions, as well as those listed in this guide.

DO NOT VENT refrigerant relief devices within a building. Outlet from rupture disc

or relief valve must be vented outdoors in accordance with the latest edition of

ANSI/ASHRAE 15 (Safety Code for Mechanical Refrigeration). The accumulation

of refrigerant in an enclosed space can displace oxygen and cause asphyxiation.

PROVIDE adequate ventilation in accordance with ANSI/ASHRAE 15, especially

for enclosed and low overhead spaces. Inhalation of high concentrations of vapor

is harmful and may cause heart irregularities, unconsciousness, or death. Inten-

tional misuse can be fatal. Vapor is heavier than air and reduces the amount of

oxygen available for breathing. Product causes eye and skin irritation. Decompo-

sition products are hazardous.

DO NOT USE OXYGEN to purge lines or to pressurize a machine for any purpose.

Oxygen gas reacts violently with oil, grease, and other common substances.

DO NOT USE air to leak test. Use only refrigerant or dry nitrogen.

NEVER EXCEED specified test pressures. VERIFY the allowable test pressure by

checking the instruction literature and the design pressures on the equipment

nameplate.

DO NOT VALVE OFF any safety device.

BE SURE that all pressure relief devices are properly installed and functioning

before operating any machine.

DANGER !DANGER

DO NOT WELD OR FLAMECUT any refrigerant line or vessel until all refrigerant

(

(liquid and vapor

) has been removed from chiller. Traces of vapor should be dis-

placed with dry air or nitrogen and the work area should be well ventilated.

Refrig-

erant in contact with an open flame produces toxic gases

DO NOT USE eyebolts or eyebolt holes to rig machine sections or the entire

assembly.

DO NOT work on high-voltage equipment unless you are a qualified electrician.

DO NOT WORK ON electrical components including control panels, switches,

starters, or oil heater until you are sure ALL POWER IS OFF and no residual volt-

age can leak from capacitors or solid-state components.

LOCK OPEN AND TAG electrical circuits during servicing. IF WORK IS INTER-

RUPTED, confirm that all circuits are generalized before resuming work.

DO NOT siphon refrigerant.

AVOID SPILLING liquid refrigerant on skin or getting it into the eyes. USE SAFETY

GOGGLES. Wash any spills from the skin with soap and water. If liquid refrigerant

enters the eyes, IMMEDIATELY FLUSH EYES with water and consult a physician.

NEVER APPLY an open flame or live steam to a refrigerant cylinder. Dangerous

over pressure can result. When it is necessary to heat refrigerant, use only warm

(110 F [43 C]) water.

WARNING !WARNING

DO NOT REUSE disposable (nonreturnable) cylinders or attempt to refill them. It

is DANGEROUS AND ILLEGAL. When cylinder is emptied, evacuate remaining

gas pressure, loosen the collar, and unscrew and discard the valve stem. DO NOT

INCINERATE.

CHECK THE REFRIGERANT TYPE before adding refrigerant to the machine. The

introduction of the wrong refrigerant can cause machine damage or malfunction.

Operation of this equipment with refrigerants other than those cited herein should

comply with ANSI/ASHRAE-15 (latest edition). Contact Carrier for further informa-

tion on use of this machine with other refrigerants.

DO NOT ATTEMPT TO REMOVE fittings, covers, etc., while machine is under

pressure or while machine is running. Be sure pressure is at 0 psig (0 kPa) before

breaking any refrigerant connection.

CAREFULLY INSPECT all relief valves, rupture discs, and other relief devices AT

LEAST ONCE A YEAR. If machine operates in a corrosive atmosphere, inspect the

devices at more frequent intervals.

DO NOT ATTEMPT TO REPAIR OR RECONDITION any relief valve when corrosion

or build-up of foreign material (rust, dirt, scale, etc.) is found within the valve

body or mechanism. Replace the valve.

DO NOT install relief devices in series or backwards.

USE CARE when working near or in line with a compressed spring. Sudden

release of the spring can cause it and objects in its path to act as projectiles.

WARNING !WARNING

CAUTION CAUTION

DO NOT STEP on refrigerant lines. Broken lines can whip about and release

refrigerant, causing personal injury.

DO NOT climb over a machine. Use platform, catwalk, or staging. Follow safe

practices when using ladders.

USE MECHANICAL EQUIPMENT (crane, hoist, etc.) to lift or move inspection cov-

ers or other heavy components. Even if components are light, use mechanical

equipment when there is a risk of slipping or losing your balance.

BE AWARE that certain automatic start arrangements CAN ENGAGE THE

STARTER, TOWER FAN, OR PUMPS. Open the disconnect ahead of the starter,

tower fan, and pumps. Shut off the machine or pump before servicing equip-

ment.

USE only repaired or replacement parts that meet the code requirements of the

original equipment.

DO NOT VENT OR DRAIN waterboxes containing industrial brines, liquid, gases,

or semisolids without the permission of your process control group.

DO NOT LOOSEN waterbox cover bolts until the waterbox has been completely

drained.

DOUBLE-CHECK that coupling nut wrenches, dial indicators, or other items have

been removed before rotating any shafts.

CAUTION CAUTION

DO NOT LOOSEN a packing gland nut before checking thatthe nut has a positive

thread engagement.

PERIODICALLY INSPECT all valves, fittings, and piping for corrosion, rust, leaks,

or damage.

PROVIDE A DRAIN connection in the vent line near each pressure relief device to

prevent a build-up of condensate or rain water.

Contents

List of Tables

List of Figures

Safety Considerations

Introduction

General

Job Data

Equipment Required

Installation

Receiving the Machine

Inspect Shipment

Identify Machine

Provide Machine Protection

Rigging the Machine

Rig Machine Assembly

Contents

Rig Machine Components

Install Machine Supports

Install Standard Isolation

Install Optional Isolation

Install Spring Isolation

Connect Piping

Install Water Piping to Heat Exchangers

Install Vent Piping to Relief Devices

Make Electrical Connections

Connect Control Inputs

Connect Control Outputs

Connect Starter

Carrier Comfort Network Interface

Install Field Insulation

Installation Start-Up Request Checklist

Contents

List of Tables

Table 1 — 19XL Compressor/Motor Weights

Table 2 — 19XL Component Weights

Table 3 — 19XL Heat Exchanger Weights

Table 4 — Additional Heat Exchanger Weight for Marine Waterboxes

Table 5 — 19XL Waterbox Cover Weights

Table 6 — Relief Device Locations

Contents

List of Figures

Figure 1 — Model Number Identification

Figure 2 — Typical 19XL Installation (300 to 600 Tons [1055 to 2110 kW])

Figure 3 — Machine Rigging Guide

Figure 4 — 19XL Dimensions

Figure 5 — 19XL Condenser Drain

Figure 6 — 19XL Motor End View

Figure 7 — 19XL Machine Top View

Figure 8 — 19XL Refrigerant Return

Figure 9 — 19XL Oil Reclaim System

Figure 10— 19XL Machine Footprint

Figure 11— Standard Isolation

Figure 12— Accessory Isolation

Figure 13— 19XL Accessory Spring Isolation (Shown with Accessory

Soleplates)

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