Centrifugal liquid chillers are designed to provide safe and
reliable service when operated within design specifications.
Whenoperatingthisequipment, usegood judgmentand safety
precautions to avoid damage to equipment and property or
injury to personnel.
Be sure you understand and follow the procedures andsafety
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 ASHRAE (American Society of Heating, Refrigeration and Air Conditioning Engineers) 15. The accumulation of refrigerant in an enclosed space can displace oxygen and cause
asphyxiation.
PROVIDE adequate ventilation in accordance with 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 func-
tioning 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 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 TAGelectrical 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, IMMEDIATELYFLUSH
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.
17/19EX
50/60 Hz
Centrifugal Liquid Chillers
with HFC-134a
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 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 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 ATTEMPTTOREP AIROR 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 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 STAR TER,TOWERFANOR PUMPS. Open the disconnectaheadof 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 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.
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 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.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 2 2
Tab 5a 5d
PC 211Catalog No. 531-749Printed in U.S.A.Form 17/19EX-2SIPg 13-96Replaces: 17/19EX-1SI
CONTENTS
Page
SAFETY CONSIDERATIONS ...................1
INTRODUCTION ..............................2
General ......................................2
Job Data ....................................2
Equipment Required .........................2
INSTALLATION .............................2-30
Receiving the Machine .......................2
• INSPECT SHIPMENT
• IDENTIFY MACHINE
• PROVIDE MACHINE PROTECTION
Rigging the Machine .........................2
• RIG MACHINE ASSEMBLY
• RIG MACHINE COMPONENTS
• COMPONENT DISASSEMBLY
Install Machine Supports ....................14
• INSTALL STANDARD ISOLATION
• INSTALL OPTIONAL ISOLATION
• INSTALL SPRING ISOLATION
Connect Piping .............................17
• INSTALL WATER PIPING TO HEAT
EXCHANGERS
• INSTALL WATER TO OIL COOLER ON FA
COMPRESSORS
• INSTALL VENT PIPING TO RELIEF DEVICES
Make Electrical Connections .................20
• CONNECT CONTROL INPUTS
• CONNECT CONTROL OUTPUTS
• CARRIER COMFORT NETWORK INTERFACE
Install Field Insulation .......................28
• FACTORY INSULATION (OPTIONAL)
INSTALLATION START-UP REQUEST
CHECKLIST .............................CL-1
INSTALLATION
Receiving the Machine
INSPECT SHIPMENT
Do not open any valves or loosen any connections. The
standard 17/19EX machine may be shipped with a nitrogen holding charge or with the refrigerant charge isolated within the utility vessel.
1. Inspect for shipping damage while machine is still on shipping conveyance. If machine appears to be damaged or
has been torn loose from its anchorage, have it examined
by transportation inspectors before removal. Forward claim
papers directly to transportation company. Manufacturer
is not responsible for any damage incurred in transit.
2. Check all items against shipping list. Immediately notify
the nearest Carrier representative if any item is missing.
3. Toprevent loss or damage, leave all parts in original packages until beginning installation. All openings are closed
with covers or plugs to prevent dirt and debris from entering the machine’s components during shipping. A full
operating oil charge is placed in the oil sump of the compressor before shipment.
IDENTIFY MACHINE — The machine model number,
serial number, and heat exchanger sizes are stamped on
machine identification nameplate (Fig. 1). Check this information against shipping papers and job data.
PROVIDE MACHINE PROTECTION — Protect machine
and starter from construction dirt and moisture. Keep protective shipping covers in place until machine is ready for
installation.
If machine is exposed to freezing temperatures after water
circuits have been installed, open waterbox drains and remove all water from cooler and condenser.Leave drains open
until system is filled.
INTRODUCTION
General —
wired, and leak tested. Installation consists primarily of establishing water and electrical services to the machine. The
rigging, installation, field wiring, field piping and insulation
are the responsibility of the contractor and/or customer. See
Fig. 1 for model number information.
The 17/19EX machine is factory assembled,
Job Data
Necessary information consists of:
• job contract or specifications
• machine location prints
• rigging information
• piping prints and details
• field wiring drawings
• starter manufacturer’s installation details
• Carrier certified drawings
Equipment Required
• mechanic’s tools (refrigeration)
• volt-ohmmeter and clamp-on ammeter
• leak detector (halide or electronic)
• absolute pressure manometer or wet-bulb vacuum
indicator
• portable vacuum pumps
Rigging the Machine — The 17/19EX machine can
be rigged as an entire assembly. It also has flanged connections that allow the compressor, utility vessel, cooler, and
condenser sections to be separated for ease of installation.
Figures 2 and 3 show 17/19EX components.
RIG MACHINEASSEMBLY— See rigging instructions on
label attached to machine. Also refer to the rigging information found in Fig. 4-9 and Tables 1-12. Lift machine onlyfromthe 4 points indicated in rigging guide.Each lifting cable
or chain must be capable of supporting the entire weight of
the machine.
Lifting machine from points other than those specified
may result in serious damage to the unit and personal
injury. Rigging equipment and procedures must be adequate for machine weight. See Table 1 for machine
weights.
NOTE: These weights are broken down into component sections for use when installing the unit in
sections. For the complete machine weight, add all component sections and refrigerant charge together. Total
machine weight is also stenciled on the cooler and condenser sections.
2
NIH — Nozzle-In-Head
*Motors beginning with ‘‘E’’ and open drive motors (FA-JD) cannot be used with size 51-89 or 421-469 compressors.
†Open-drive motor codes:
ASME
‘U’ STAMP
UNDERWRITERS’
LABORATORIES
Fig. 1 — Model Number Identification
3
ARI (Air Conditioning
and Refrigeration
Institute)
PERFORMANCE
CERTIFIED
(60 Hz Only)
RIG MACHINE COMPONENTS — Refer to instructions
on page 5, Fig. 6-8, and Carrier certified drawings for machine component disassembly.
IMPORTANT: Onlya qualified servicetechnician should
disassemble and reassemble the machine. After reassembly,the machine must be dehydrated and leak tested.
When rigging components separately, the open drive
(17EX) motor must be removed to avoid overturning.
Do not attempt to disconnect flanges while the machine
is under pressure. Failure to relieve pressure can result
in personal injury or damage to the unit.
Before rigging the compressor, disconnect the wires
leading from the power panel to the control center at the
power panel.
NOTE: Wiring for sensors must be disconnected. Label each
wire before removal (see Carrier certified drawings).
Detach all transducer and sensor wires at the sensor, then
clip all wire ties necessary to remove the wires from the heat
exchangers.
1—Refrigerant Liquid Line to Economizer/
Storage Vessel
2—Cooler Suction Pipe
3—Compressor Suction Elbow
4—Condenser
5—Condenser Discharge Pipe
6—Compressor Discharge Elbow
7—Guide Vane Actuator
8—Economizer Gas Line to Compressor
COMPONENT DISASSEMBLY
To Separate Compressor from the Machine
1. Make sure to check that the machine is at atmospheric
pressure before disassembly.
2. Since the center of gravity is high on 17EX machines,
the motor MUST be removed before rigging the
machine.
3. Suction elbow should be rigged separately (Fig. 6,
Item 2). Place slings around the elbow and attach to the
hoist. Remove bolting at flanges, (Fig. 6, Items 1 and 3).
Detach the elbow.
4. Unbolt discharge flange to the condenser at flange
(Fig. 8, Item 3). Cut copper lines (Fig. 6, Items 7, 8,
and 9).
5. Disconnect and detach the economizer vent line
(Fig. 8, Item 4). Unbolt the line at flange (Fig. 8,
Item 2).
6. On 19EX machines, disconnect the motor cooling drain
line at flange (Fig. 8, Item 5).
7. Disconnect wiring to the control center and power panel.
8. Connect rigging to the compressor.
9. Unbolt compressor from the utility vessel (Fig. 7,
Items 2, 4, and 5).
10. Hoist the compressor off of the unit.
11. If the compressor is to be transported or set down,
the base should be bolted to sections of 4 in.x6in.
lumber.
To Separate Condenser from the Machine
1. Unbolt flange (Fig. 6, Item 3).
2. Unbolt flange (Fig. 6, Item 4).
3. Cut copper pipe (Fig. 6, Item 7).
4. Unbolt hot flange (Fig. 7, Item 1).
5. Connect rigging to all corners of the condenser.
NOTE: Item numbers are referenced in Rigging the Machine, Component Disassembly section.
Fig.6—Typical Top View (19EX Shown)
NOTE: Item numbers are referenced in Rigging the Machine, Component Disassembly section.
Fig.7—Typical Side View (19EX Shown)
7
NOTE: Item numbers are referenced in Rigging the Machine, Component Disassembly section.
Fig.8—Typical Motor End View (19EX Shown)
To Separate Cooler From Utility Vessel
1. Remove condenser (see previous section).
2. Cut copper lines (Fig. 6, Items 6 and 8).
3. Unbolt liquid refrigerant line at flange (Fig. 7, Item 3).
4. Connect rigging to all four corners of the cooler before
lifting the unit.
5. Unbolt connections to the utility vessel (Fig. 6, Items 5
and 10).
To Assemble the Machine
1. Follow disassembly instructions (in reverse order) and bolt
all flanges back together using a gasket sealant. The following torque requirements are specified:
FIG.ITEM NO.
6
7
8
N-m — Newton Meters
*This torque is used to rig the entire machine. Once the machine
is in place, if no further rigging is anticipated, the bolt torque can
be reduced to 280 ft-lb (380 N-m).
3580786
1 or 4170230
5 and 10840*1139*
1380515
4 and 5250340
1 and 6280380
2170230
3380515
57196
TORQUE
ft-lbN-m
2. All gasketed or O-ring joints which have been disassembled must be assembled using new gaskets and O-rings.
These new gaskets and O-rings (along with gasket sealant, O-ring lubricant, and copper line couplings) are available through your Carrier representative.
3. Braze all copper lines back together using a suitable brazing material for copper. Carrier recommends an AWS
(American Welding Society) Classification BCuP-2.
Do not tilt the compressor; oil is contained in the oil
sump.
Additional Notes
1. Use silicon grease on new O-rings when refitting.
2. Use gasket sealant on new gaskets when refitting.
3. Cooler, utility, and condenser vessels may be rigged vertically, as separate components. Rigging should be fixed
to all four corners of the tube sheet.
4. New gaskets, grease for O-rings, and gasket sealant for a
complete take-apart operation are available in a kit. Contact your Carrier representative.
8
NOTES:
1. Certified drawings available upon request.
2. Service accessshould be provided perAmerican Society of Heating,Refrigeration, and Air Conditioning Engineers (ASHRAE) 15, latest edition, National Fire Protection Association (NFPA)
70, and local safety codes.
*If a machine configuration other than 2-pass, 150 psig (1034 kPa), NIH waterbox configuration is used, refer to Tables 3
and 4 to obtain the additional dry and water weights that must be added to the values shown in this table.
†Cooler and condenser weights shown are based upon 2-pass, nozzle-in-head (NIH) waterboxes with 150 psig (1034 kPa)
covers. Includes components attached to cooler, but does not include suction/discharge, elbow, or other interconnecting
piping.
**Dry weight includes all components attached to economizer: Covers, float valves, brackets, control center (31 lb [14 kg]),
and power panel (20 lb [9 kg]). Dry weight does not include compressor weight, motor weight, or pumpout condensing unit
weight. The pumpout condensing unit weight is 210 lb (95 kg). For compressor and motor weights, refer to Tables 6, 7, 8,
10A, and 10B.
††Operating weight includes the sum of the dry weight, refrigerant weight, and water weight.
*Total machine refrigerant charge includes the cooler, condenser, and economizer.
NOTE: Regulations mandate that machine shipping charge is limited to 7500 lb (3402 kg).
610277
844381
TOTAL REFRIGERANT
CHARGE*
31001 406
45002 041
10
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