Carrier EVERGREEN HFC-134A User Manual

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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 532-309 Printed in U.S.A. Form 23XRV-1SI Pg 1 309 6-06 Replaces: New
Book 2
Ta b 5 e
Installation Instructions
SAFETY CONSIDERATIONS
Screw liquid chillers are designed to provide safe and
reliable service when operated within design specifica-
tions. When operating this equipment, use good judg-
ment 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 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 accor-
dance with the latest edition of ANSI/ASHRAE 15 (American
National Standards Institute/American Society of Heating, Refrigera-
tion and Air-Conditioning Engineers) (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. 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.
Decomposition 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.
RISK OF INJURY OR DEATH by electrocution. High voltage
is present on motor leads even though the motor is not running.
Open the power supply disconnect before touching motor leads or
terminals.
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 heat exchangers 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 voltage can leak from capacitors or
solid-state components.
LOCK OPEN AND TAG electrical circuits during servicing. IF
WORK IS INTERRUPTED, confirm that all circuits are deenergized
before resuming work.
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.
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 NOT ATTEMPT TO REMOVE fittings, covers, etc., while
machine 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. 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.
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 compo-
nents 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 corro-
sion, 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.
EVERGREEN®
23XRV High-Efficiency Variable Speed Screw Chiller
with Foxfire™ Compression Technology
and PIC III Controls
50/60 Hz
HFC-134a
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1 2 3 4 5 6 ... 51 52

Summary of Contents

Page 1 - Installation Instructions

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

Page 2

10Table 7 — 23XRV Heat Exchanger Data*Rigging weights are for standard tubes of standard wall thickness (Turbo-B3 and Spikefin 2, 0.025-in. [0.635 mm]

Page 3

11Table 8B — 23XRV Additional Data for Condenser Marine Waterboxes* *Add to heat exchanger data for total weights or volumes.NOTES:1. Weight adder sho

Page 4

12MOTOR TEMPERATURECABLECONTROLPA NE LVAPORIZER HTR CONDUITOIL HEATER CONDUITOIL PUMP CONDUITOIL SUMP TEMP. CABLEOIL SUMP PRESS. CABLEOIL PRESS. CABLE

Page 5 - Fig. 5 — VFD Nameplate

13Separate Machine Components — The design ofthe 23XRV allows for disassembly at the job site so thatindividual components may be moved through existi

Page 6

149. Cut the vaporizer refrigerant return line as shown.10. Disconnect all sensors with cables that cross fromthe condenser side of the machine to the

Page 7 - MACHINE RIGGING GUIDE

153. Remove the nuts that secure the terminal box transitionpiece to the motor housing.4. Disconnect the motor leads from the motor terminals(Fig. 17)

Page 8

16Lifting the Control Center — Care should be used to preventdamage due to dropping or jolting when moving the controlcenter. A fork truck or similar

Page 9

17SEPARATE THE COMPRESSOR FROM THECONDENSERThe VFD blocks access to the compressor mounting bolts.It must be removed before the compressor can be sepa

Page 10

18Table 10 — Compressor Fastener Identification1. Disconnect the oil supply line in two places (Fig. 23).Cap the oil lines and fittings.NOTE: Compress

Page 11

19SEPARATE THE VAPORIZER FROM THE CON-DENSER — The VFD mounting brackets (Fig. 24) extendbeyond the outboard edge of the vaporizer. The vaporizerexten

Page 12

2CONTENTSPageSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page 13

20OIL SUPPLYLINEVAPORIZEROIL PUMPOIL FILTERVAPORIZER HOTGAS RETURNLINEOIL RECLAIMLINEOIL SUMPOIL PRESSUREREGULATOR ISOLATIONVALVEOIL PRESSUREREGULATOR

Page 14

21MOTOR LEADSCONTROL CENTERTERMINAL ENCLOSURE FRAMETHERMAL INSULATORINSULATIONFRAMEASSEMBLYTERMINALBOX FRAMECOMPRESSORFOAM INSULATIONTERMINAL BOX MOUN

Page 15

22Insulate Motor Terminals and Lead Wire Ends — Locateheat shrink tubing (RCD P/N LF33MM114) over powerconnections so that they are completely covered

Page 16 - GRAINGER P/N 5ZA63

23INSTALL ACCESSORY ISOLATION (if required) — Un-even floors or other considerations may dictate the use ofaccessory soleplates (supplied by Carrier

Page 17 - HUMIDITY

245. Remove jacking screws from leveling pads after grouthas hardened.INSTALL SPRING ISOLATIONSpring isolation may be purchased as an accessory fromCa

Page 18

25121110987DISCHARGE ENDSUCTION END654321CONDENSERCONDENSERCOOLERCOOLERNOZZLE-IN HEAD WATERBOXESFRAME 3FRAMES 4 AND 5NOZZLE ARRANGEMENT CODES FOR ALL

Page 19 - VFD Installation

26NOZZLE ARRANGEMENT CODESPAS SCOOLER WATERBOXES CONDENSER WATERBOXESIn OutArrangementCodeIn OutArrangementCode18 5A—— —5 8 B—— —279 C 10 12 R46 D 1 3

Page 20 - Fig. 25 — Oil Reclaim Piping

27LEVEL GAGE0' - 5 1/2"[140mm]PRESSURE GAGE3/8" MALE FLARERELIEF VALVE CONN.1/2" DIA. K.O.ELECTRICAL CONN.(PUMPOUT POWER)1' -

Page 21 - Fig. 27 — Motor Terminal Box

28RATED DRY WEIGHT AND REFRIGERANT CAPACITYENGLISH (lb)SI (kg)TANKSIZETANK OD(in.)DRYWEIGHT*(lb)R-134a MAXIMUM REFRIGERANT CAPACITY (lb)ANSI/ASHRAE 15

Page 22 - Install Machine Supports

29COOLERCONTROL CENTERCOOLER REFRIGERANTPUMPOUT VALVECOOLER CHARGINGVALVEUSE CONDENSERCHARGINGVALVE TO ADDCHARGEDISCHARGE ISOLATIONVALVE (OPTIONAL)STO

Page 23 - ACCESSORY SOLEPLATE DETAIL

3Identifying the Drive by Part Number — Each LiquiFlo™2.0 AC drive can be identified by its part number. See Fig. 5.This number appears on the shippi

Page 24 - Connect Piping

30INSTALL VENT PIPING TO RELIEF VALVES — The23XRV chiller is factory equipped with relief valves on thecooler and condenser shells. Refer to Fig. 43 a

Page 25 - CONDENSER

31Table 11 — Relief Valve LocationsNOTE: All valves relieve at 185 psi (1275 kPa). These instructions are intended for qualified electrical per-son

Page 26

32Fig. 44 — Typical Field Wiring Schematica23-1585

Page 27 - FRONT VIEW

33Fig. 44 — Typical Field Wiring Schematic (cont)a23-1586

Page 28

34Fig. 44 — Typical Field Wiring Schematic (cont)

Page 29

35NOTES FOR FIG. 44GENERAL1.0 Variable frequency drive (VFD) shall be designed andmanufactured in accordance with Carrier engineeringrequirements.1.1

Page 30 - WITHOUT ISOLATION VALVES

36Fig. 45 — PIC III Control Component Layouta23-1584

Page 31

37WIRING THE FIELD WIRING TERMINAL STRIPS —This section describes how to wire the field wiring terminalstrips shown in Fig. 46 and 47. The control ter

Page 32

38Fig. 46 — 23XRV Controls Schematica23-1588

Page 33

39Fig. 46 — 23XRV Controls Schematic (cont)a23-1589

Page 34

420191817161514131211109876543212122232425262728293032313335 34363738394041504948474645514443421—Motor Terminal Cover Plate2—Variable Frequency Drive3

Page 35 - NOTES FOR FIG. 44

40DPI Communications Interface Board Status LEDsFig. 47 — Control Terminal BlocksFig. 48 — Communications Interface Board Status Lightsa23-1590a23-159

Page 36

41DRAIN WIREDRAIN WIREDRAIN WIREDRAIN WIREGROUNDBLACKWHITEREDBLACKWHITEREDBLACKWHITEREDBLACKWHITERED123REDBLACKWHITEFig. 49 — CCN Communication Wiring

Page 37

42TO CHILLED WATER PUMPTO CONDENSER WATER PUMP TO COOLING TOWER FANTOCOOLINGTO W ERFROMCOOLINGTO W ERFROMLOADTOLOAD354DRAINMAIN COMPRESSORMOTOR POWER

Page 38

43COMPLETING THE INSTALLATIONThis section provides instructions on how to perform a finalcheck of the installation. Do not energize the VFD circuitbre

Page 39

44When connecting the CCN communication bus to a systemelement, a color code system for the entire network is recom-mended to simplify installation an

Page 40 - Status LEDs

45Fig. 53 — Lead/Lag Control Wiringa23-1597

Page 41

46Fig. 53 — Lead/Lag Control Wiring (cont)a23-1598

Page 42

47FACTORY-INSTALLEDINSULATIONFACTORY-SUPPLIED ANDINSTALLED INSULATION (IF REQUIRED)Fig. 54 — 23XRV Insulation Areaa23-1599

Page 45

57642135891918171615141110121320Fig. 4 — Typical 23XRV Installation (Sensor Locations)1—Condenser Pressure2—Evaporator Pressure3—Compressor Discharge

Page 46

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

Page 47 - FACTORY-SUPPLIED AND

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

Page 48

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

Page 49

643186171819112376652111516189014182102Fig. 6 — Control Center Components1—Input Inductor Assembly 12 — Fuse, Class CC, 600V, 1A (3)2—Capacitor Bank A

Page 50 - Ta b 5 e

7CHAIN “B”(SEE NOTE #2)CHAIN “C”(SEE NOTE #2)CHAIN “D”(SEE NOTE #2) 15´-0´´ MIN. HEIGHTABOVE FLOOR“E”“F”“A”Fig. 7 — Machine Electrical Data Na

Page 51

8Table 1 — Drive Assembly and Power Module Ratings*110% output current capability for one minute, 150% output current for 5 seconds.Table 2 — 23XRV Di

Page 52

9Table 3 — 23XRV Dimensions (Marine Waterbox)*Assumes both cooler and condenser nozzles on same end of chiller.†1 or 3 pass length applies if cooler i

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