Carrier HERMETIC SCREW LIQUID CHILLERS 23 XL Manuel d'utilisateur

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Installation Instructions
SAFETY CONSIDERATIONS
Screw liquid chillers are designed to provide safe and re-
liable service when operated within design specifica-
tions. When operating this equipment, use good judgment
and follow safety precautions to avoid damage to equip-
ment and property or injury to personnel.
Be sure you understand and follow the procedures and
safety precautions contained in the machine instruc-
tions 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 ac-
cordance with the latest edition of ANSI/ASHRAE 15 (American
National Standards Institute/American Society of Heating,
Refrigeration, and Air Conditioning Engineers). 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 ir-
regularities, unconsciousness, or death. Intentional misuse can be
fatal. Vapor is heavier than air and reduces the amount of oxygen
available for breathing. Product causes eye and skin irritation. De-
composition 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.
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 displaced with dry air or nitrogen and
the work area should be well ventilated. Refrigerant 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 quali-
fied electrician.
DO NOT WORK ON electrical components, including control
center, switches, starters, or oil heater until you are sure ALLPOWER
IS OFF and no residual voltage can leak from capacitors or solid-
state components.
LOCK OPENAND TAG electrical circuits during servicing. IF WORK
IS INTERRUPTED, confirm that all circuits are deenergized be-
fore resuming work.
DO NOT syphon 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, IMME-
DIATELY 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.
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 information on use of this
machine with other refrigerants.
DO NOTATTEMPT TO REMOVE fittings, covers, etc., while ma-
chine is under pressure or while machine is running. Be sure pres-
sure 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. Re-
place 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.
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 covers or other heavy components. Even if com-
ponents 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 equipment.
USE only repaired or replacement parts that meet the code require-
ments 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.
DO NOT LOOSEN a packing gland nut before checking that the
nut has a positive thread engagement.
PERIODICALLY INSPECT all valves, fittings, and piping for cor-
rosion, rust, leaks, or damage.
PROVIDE A DRAIN connection in the vent line near each pres-
sure relief device to prevent a build-up of condensate or rain
water.
23XL
50/60 Hz
Hermetic Screw Liquid Chillers
With HCFC-22 and HFC-134a
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 2
Tab 5e
PC 211 Catalog No. 532-303 Printed in U.S.A. Form 23XL-2SI Pg 1 9-94 Replaces: 23XL-1SI
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Résumé du contenu

Page 1 - Installation Instructions

Installation InstructionsSAFETY CONSIDERATIONSScrew liquid chillers are designed to provide safe and re-liable service when operated within design spe

Page 2 - VI — Volumetric Index

Table 5A — 23XL Waterbox Cover Weights (Frame 1 and 2 Machines)*HEAT EXCHANGERWATERBOXDESCRIPTIONPSI(kPa)FRAME 1 FRAME 2lbs kg lbs kgCooler orCondense

Page 3 - REAR VIEW

NOTE: Before proceeding with disassembly, make sure themachine is at atmospheric pressure.NOTE: The screw compressor uses all metric dimensionsand met

Page 4

Refer to Fig. 10 unless otherwise specified.1. Turn all 4 vessel separation feet to the lowered position(Fig. 11).2. Disconnect and/or cut the followin

Page 5

Fig. 9 — 23XL Top View (Frame 1 and 2 Machines)13

Page 6 - (Frame 4 Machines)

Fig. 10 — 23XL Top View (Frame 4 Machines)14

Page 7

2. Cover all openings.3. Be sure the switches, sensor, and transducers aredisconnected.4. Cut oil separator from its support foot.5. Rig oil separator

Page 8

Install Machine SupportsINSTALL STANDARD ISOLATION — Figures 13-18 showthe position of support plates and shear flex pads that formthe standard machine

Page 9 - Table 3 — 23XL Motor Weights*

NOTES:1. Dimensions in ( ) are in millimeters.2. Isolation package includes 4 shear flex pads.Fig. 15 — Standard IsolationHRS — Hot Rolled SteelNOTES:1

Page 10

For adequate and long-lasting machine support, proper groutselection and placement is essential. Carrier recommends thatonly epoxy-type grout be used

Page 11

Fig. 19 — Typical Nozzle Piping19

Page 12

CONTENTSPageSAFETY CONSIDERATIONS ...1INTRODUCTION ...2General ...2Job D

Page 13

Cooler and Condenser Nozzle ArrangementsNOZZLE ARRANGEMENT CODESCooler CondenserPass In Out Code Pass In Out Code112 A111 12 J21 B 1211 K234 C213 14 L

Page 14

Cooler and Condenser Nozzle ArrangementsNOZZLE ARRANGEMENT CODESCooler CondenserPass In Out Code Pass In Out Code185 A111 2 P58 B 211 Q279 C210 12 R46

Page 15

DIMENSIONSENGLISH (ft-in.)TANK SIZE A B C D E F G H J K L M N P R S T0428 10- 5 9-10 4-9 2-43⁄41-23⁄83-13⁄164-11 3-81⁄83- 8 2-97⁄163-2 0-31⁄24-83⁄41-7

Page 16 - Install Machine Supports

LEGENDHidden PipingField Supplied and Installed PipingFactory Supplied and Installed PipingFig. 23 — Typical Optional Pumpout System Piping Schematic

Page 17 - Fig. 16 — Accessory Isolation

LEGENDField Supplied and Installed PipingFactory Supplied and Installed PipingFig. 24 — Typical Optional Pumpout System Piping Schematic without Stora

Page 18 - Connect Piping

INSTALL VENT PIPING TO RELIEF DEVICES — The23XL chiller is factory equipped with relief devices on thecooler and condenser shells. Refer to Fig. 26 an

Page 19

CONNECT CONTROL INPUTS — Connect the control in-put wiring from the chilled and condenser water flow switchesto the starter terminal strip. Wiring may

Page 20 - Waterbox Nozzle Sizes

LEGEND1—Chilled Water Pump Starter2—Condenser Water Pump Starter3—Cooling Tower Fan Starter4—Chilled Water Pump5—Condenser Water Pump6—Disconnect7—Ven

Page 21

LEGEND1—Chilled Water Pump Starter2—Condenser Water Pump Starter3—Cooling Tower Fan Starter4—Condenser Water Pump5—Chilled Water Pump6—Disconnect7—Fre

Page 22 - DIMENSIONS

IMPORTANT: Do not insulate terminals until wiringarrangement has been checked and approved byCarrier start-up personnel.Also, make sure correct phas-i

Page 23 - Hidden Piping

FRONT VIEWREAR VIEWFig.2—Typical 23XL Installation (Frame 1 and 2 Machines)1—Power Panel2—Local Interface Display (LID) Control Center3—ASME Nameplate

Page 24

When connecting the CCN communication bus to a sys-tem element, a color code system for the entire network isrecommended to simplify installation and

Page 25

LEGENDFactory WiringField Wiring*Field supplied terminal strip must be located in the control center.Fig. 31 — Typical COMM1 CCN Communication Wiring

Page 26

Fig. 32 — 23XL Insulation Area for Frame 1 and 2 MachinesFig. 33 — 23XL Insulation Area for Frame 4 Machines796 32→→

Page 27

IMPORTANT: Refer to certified drawings for addi-tional information. Certified drawings are available uponrequest.LEGENDRequired Power WiringRequired Con

Page 28

IMPORTANT: Wiring shown is typical and not intended to show detailfor a specific installation. Refer to certified field wiring diagrams foradditional inf

Page 29

INSTALLATION START-UP REQUEST CHECKLISTMachine Model Number: 23XL Serial Number:To:Attn:DateProject NameCarrier Job NumberThe following information pr

Page 30 - Install Field Insulation

TESTING YES/NODATE TO BECOMPLETED1. The cooling tower fan has been checked for blade pitch andproper operation.2. The chilled water and condenser wate

Page 31 - Field Wiring

Rigging the Machine — The 23XL can be rigged asan entire assembly. It also has flanged connections thatallow the compressor, cooler, condenser, and oil

Page 32

The compressor is heavy. To avoid bodily injury, liftthe compressor only by using cables or slings. Do notlift the compressor using threaded eyebolts.

Page 33

NOTES:1. Each chain must be capable of supporting the entire weight of the machine. Maxi-mum weight of machine is 22,300 lbs (10,116 Kg).2. Chain leng

Page 34

HEAT EXCHANGERSIZEA (LENGTH)OVERALLB (WIDTH)OVERALLC (HEIGHT)NOZZLE PIPE SIZE(in.)1 Pass 2 and 3 Pass*ft-in. mm ft-in. mm ft-in. mm ft-in. mm 1-Pass 2

Page 35 - CUT ALONG DOTTED LINE

NOTES:1. For flanged waterbox nozzles, refer to the certified drawings for length addition measurements.2. Service access should be provided based on Am

Page 36

Table 1 — 23XL Compressor Weights23XLUNITCOMPRESSOR SIZE(Tons)ASSEMBLY(Less Motor)lb kgFrame 1C2 2270 1029C4 2300 1043Frame 2 C6 2400 1088Frame 4D4 33

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