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
Page 2
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
Page 3
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)
Page 4
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
Page 8
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
Page 9
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
Page 11
Table 3 — Additional Cooler Weights*
COOLER
FRAME
3
4
NIH — Nozzle-In-Head
*When using a machine configuration other than 2-pass, NIH waterboxes with 150 psig (1038 kPa) covers, add the weights listed in this table to the appropriate weights
*When using a machine configuration other than 2-pass, NIH waterboxes with 150 psig (1034 kPa) covers, add the weights listed in this table to the appropriate weights
in Table 1 to obtain the correct condenser weight.
†Subtract 228 lb (103 kg) from the weight shown in Table 1.
*The 150 psig (1034 kPa) 2-pass waterbox cover weights are included in the dry weight shown in Table 1.
†Twodifferent waterbox covers are present on 2-pass machines. The weight shown in this table represents the weight
of the waterbox cover that contains the nozzles. A blank waterbox cover is also present on 2-pass units. The weight
of the blank waterbox cover is identical to the weight of the same size marine waterbox cover. Refer to Table 11.
INSTALL STANDARD ISOLATION — Figures 10 and 11
show the position of support plates and shear flex pads, which
together form the standard machine support system.
INSTALL OPTIONAL ISOLATION (if required) — Uneven floors or other considerations may dictate the use of
soleplates and leveling pads. Refer to Fig. 10 and 11.
Level machine by using jacking screws in isolation sole-
plates. Use a level at least 24 in. (600 mm) long.
For adequate and long lasting machine support, proper grout
selection and placement is essential. Carrier recommends that
only pre-mixed, epoxy-type, non-shrinking grout be used for
machine installation. Follow manufacturer’s instructions in
applying grout.
1. Check machine location prints for required grout
thickness.
2. Carefully wax jacking screws for easy removal from grout.
3. Grout must extend above the base of the soleplate and
there must be no voids in grout beneath the plates.
4. Allow grout to set and harden, per manufacturer’s instructions, before starting machine.
5. Remove jacking screws from leveling pads after grout has
hardened.
INSTALL SPRING ISOLATION — Field-supplied spring
isolators may be placed directly under machine support plates
or be located under machine soleplates. Consult job data for
specific arrangement. Low profile spring isolation assemblies are recommended so that the machine is kept at a convenient working height inside of the tube sheet.
Obtain specific details on spring mounting and machine
weight distribution from job data. Also, check job data for
methods for supporting and isolating pipes that are attached
to the spring-isolated machines.
14
Page 15
COOLER SIZES 31-33 AND 41-44
COOLER SIZES
AB C
ft-in.mmft-in.mmft-in.mm
31-338-8
2
26548-1026924- 81422
1
⁄
41-449-328199- 4
COOLER SIZES 45-48
DIMENSIONS
1
⁄
2
28584-111⁄
4
1505
NOTES:
1. Dimensions in ( ) are in mm.
2. 1 inch = 25.4 mm.
3. All dimensions approximately ±
1
⁄2inch.
Fig. 10 — Machine Contact Surfaces
15
Page 16
SOLEPLATE ISOLATIONTYPICAL ISOLATION
ACCESSORY ISOLATION
SOLEPLATE DETAIL
SECTION A-A
NOTES:
1. Dimensions in ( ) are in millimeters.
2. Accessory soleplate package includes 4 soleplates, 16 jacking screws and leveling pads. Requires
isolation package.
3. Jacking screws to be removed after grout has set.
4. Thickness of grout will vary,depending on the amount necessary to level chiller. Use only pre-mixed
non-shrinking grout, Celcote HT-648 or Master Builders 636, 08-1
1
⁄29 (38.1) to 08-21⁄49 (57) thick.
STANDARD ISOLATION
VIEW B-B
ISOLATION WITH ISOLATION PACKAGE ONLY
(STANDARD)
NOTE: Isolation package includes 4 shear flex pads.
Fig. 11 — Machine Vibration Isolation
16
Page 17
Connect Piping
INSTALL WATER PIPING TO HEAT EXCHANGERS —
Install piping using job data, piping drawings, and procedure outlined below. A typical piping installation is shown
in Fig. 12.
Factory-supplied insulation is not flammable but can be
damaged by welding sparks and open flame. Protect insulation with a wet canvas cover.
Remove chilled and condenser water sensors before
welding connecting piping to water nozzles. Refer to
Fig. 2 and 3. Replace sensors after welding is complete.
1. If the machine is a nozzle-in-head (NIH) arrangement,
offset pipe flanges to permit removal of waterbox cover
for maintenance and to provide clearance for pipe cleaning. See Tables 11 and 12 for waterbox cover weights.
No flanges are necessary with marine waterboxes; however, water piping should not cross in front of the waterbox or access will be blocked off.
2. Provide openings in water piping for required pressure
gages and thermometers. Openings should be at least 6 to
10 pipe diameters from the waterbox nozzle. For thorough mixing and temperature stabilization, wells in the
leaving water pipe should extend inside pipe at least
2 in. (50 mm).
3. Install air vents at all high points in piping to remove air
and prevent water hammer.
4. Install pipe hangers where needed. Make sure no weight
or stress is placed on waterbox nozzles or flanges.
5. Water flow direction must be as specified in Fig. 13.
NOTE: Entering water is always the lower of the 2 nozzles.
Leaving water is always the upper nozzle for cooler or
condenser.
6. Water flow switches must be of vapor-tight construction
and must be installed on top of pipe in a horizontal run
and at least 5 pipe diameters from any bend.
Differential pressure type flow switches may be connected at the nozzle of the waterbox.
7. Install waterbox vent and drain piping in accordance with
individual job data. All connections are3⁄4-in. FPT.
8. Install waterbox drain plugs in the unused waterbox drains
and vent openings.
9. Install water piping to the optional pumpout system condenser storage tank as shown in Fig. 14.
LEGEND
COM — Common
N.O. — Normally Open
*Donot locate pressure connections past the machineisolation valve.
Fig. 12 — Typical Nozzle Piping
17
Page 18
NOZZLE-IN-HEAD WATERBOXES
FRAME 3 AND 5 MARINE WATERBOXES
COOLER WATERBOX
PassInOut
1
2
3
PassInOut
1
2
3
NOTES:
1. Frame 5 condenser available in 1 and 2
pass only. Frame 3 in 2 and 3 pass only.
2. The vents for these waterboxes, located
in the covers are 1 in. FPT at the top of
each box, and the drains are 1 in. FPT,at
the bottom.
3. Victaulic connections are standard.
4. Flanged waterbox connections are
optional.
85 A
58 B
79 C
46 D
76 E
49 F
CONDENSER WATERBOX
112P
211 Q
1012R
13 S
103T
112 U
Arr.
Code
Arr.
Code
Fig. 13 — Nozzle Arrangements
COOLER WATERBOX
PassInOut
1
2
3
PassInOut
2
3
NOTES:
1. Frame 3 condenser available in 2 and 3
pass only.Frame 5 condenser available in
2 pass only.
2. The vents for these waterboxes are
1 in. FPT at the top of each box, and the
drains are 1 in. FPT, at the bottom.
3. Victaulic connections are standard.
4. Flanged waterbox connections are
optional.
85 A
58 B
79 C
46 D
1617G
76 E
49 F
CONDENSER WATERBOX
1012R
13 S
1315Y
103T
112 U
Arr.
Code
Arr.
Code
18
Page 19
FRAME 4 MARINE WATERBOXES
NOTES:
1. The vents for these waterboxes are 1 in. FPT at the top of each box. The
drains are 1 in. FPT, at the bottom.
2. Victaulic connections are standard.
3. Flanged connections are optional.
COOLER WATERBOX
PassInOut
1
2
3
PassInOut
1
2
3
85 A
58 B
79 C
46 D
1617G
76 E
49 F
CONDENSER WATERBOX
112P
211 Q
1012R
13 S
1315Y
103T
112 U
Arr.
Code
Arr.
Code
Fig. 13 — Nozzle Arrangements (cont)
Fig. 14 — Pumpout Unit
INSTALL WATER TO OIL COOLER ON FA COMPRESORS — On FAcompressors, water must be piped to the oil
cooler heat exchanger (located under the suction pipe to the
compressor). The water supply may be either city water or
chilled water. Pipe city water to an open sight drain. Chilled
water enters via the cooling entering water intake (Fig. 15).
City water must be clean and noncorrosive. Water side
erosion or corrosion of the oil cooler coil may lead to
extensive machine damage not covered by the standard
warranty.
If water from the machine chilled water circuit is used for
oil cooling, it should enter the oil cooler from the entering
water line of the machine cooler. Water leaving the oil cooler
should connect to the leaving water line of the machine cooler
at a point downstream from the chilled water sensor, so that
oil cooler leaving water temperature does not affect the sensor readings.
Locate the oil cooler leaving water connection at some
distance from any water temperature indicators. On singlepass machines, water leaving the oil cooler should be connected into the suction side of the chilled water pump so that
adequate pressure drop is assured for oil cooling.
The nominal conditions for oil cooler water flow are:
Flow rate .......................30gpm(1.9 L/s)
Leaving temperature ........85to100F(29to38C)
Pressure drop at oil cooler .......7.25 psid (50 kPad)
Max differential pressure across closed
solenoid valve ..............150psid (1034 kPad)
1
The oil cooler connections are 1
⁄4in. FPT.
19
Page 20
Fig. 15 — Water Piping, Oil Cooler to
Chilled Water Circuit (Typical)
INSTALL VENT PIPING TO RELIEF DEVICES — The
17/19EX chiller is factory equipped with relief devices on
the cooler and utility vessels. Refer to Fig. 2 and 3, and
Table 13 for size and location of relief devices, as well as
information that will help determine pipe size. Vent relief
devices to the outdoors in accordance with ASHRAE 15
(latest edition) Safety Code for Mechanical Refrigeration and
all other applicable codes. Toensure relief valve serviceability, and as required in ASHRAE 15, latest edition, 3-way
dual shutoff valves and redundant relief valves are installed
on the economizer/storage vessel, refer to Fig. 16.
NOTE: The 3-way dual shutoff valve should be either front
seated or back seated. Running the refrigeration system with
the valve stem in the center position can reduce total relief
capacity and cause valve chattering.
Refrigerant discharged into confined spaces can displace oxygen and cause asphyxiation.
1. If relief device piping is manifolded, the cross-sectional
area of the relief pipe must at least equal the sum of the
areas required for individual relief pipes.
2. Provide a pipe plug near outlet side of each relief device
for leak testing. Provide pipe fittings that allow vent piping to be disconnected periodically for inspection of valve
mechanism.
3. Piping to relief devices must not apply stress to the
device. Adequately support piping. A length of flexible
tubing or piping near the device is essential on springisolated machines.
4. Cover the outdoor vent with a rain cap and place a condensation drain at the low point in the vent piping to prevent water build-up on the atmospheric side of the relief
device.
Make Electrical Connections — Field wiring must
be installed in accordance with job wiring diagrams and all
applicable electrical codes.
Fig. 16 — Typical 17/19EX Utility Vessel
Relief Valve Tee
Do not run 120-v wiring into the control center. The
control center should only be used for additional extra
low-voltage wiring (50 v maximum).
Wiring diagrams in this publication (Fig. 17-23) are for
reference only and are not intended for use during actual installation; follow job specific wiring diagrams.
Specific electrical ratings for individual components are
shown in Table 14.
Do not attempt to start compressor or oil pump — even
for a rotation check — or apply test voltage of any kind
while machine is under dehydration vacuum. Motor insulation breakdown and serious damage may result.
CONNECT CONTROL INPUTS — Connect the control input wiring from the chilled and condenser water flow switches
to the starter terminal strip. Wiring may also be specified for
a spare safety switch, and a remote start/stop contact can be
wired to the starter terminal strip, as shown in Fig. 17 and
18. Additional spare sensors and Carrier Comfort Network
modules may be specified as well. These are wired to the
machine control center as indicated in Fig. 22 and 23.
CONNECT CONTROL OUTPUTS — Connect auxiliary
equipment, chilled and condenser water pumps, and spare
alarms as required and indicated on job wiring drawings.
Connect Starter — Assemble and install compressor terminal box in desired orientation, and cut necessary conduit openings in conduit support plates. Attach power leads to compressor terminals in accordance with job wiring drawings,
observing caution label in terminal box. Use only copper conductors. The motor must be grounded in accordance with
NEC (National Electrical Code), applicable local codes, and
job wiring diagrams.
IMPORTANT: Do not insulate terminals until wiring
arrangement has been checked and approved by
Carrier start-up personnel.Also, make sure correct phasing is followed for proper motor rotation.
20
Page 21
Insulate Motor Terminals and Lead Wire Ends — Insulate
compressor motor terminals, lead wire ends, and electrical
wires to prevent moisture condensation and electrical arcing. For low-voltage units (up to 600 v), insulate the electrical terminals as follows:
1. Insulate each terminal by wrapping with one layer of
insulation putty.
2. Overwrap putty with 4 layers of vinyl tape.
High-voltage units require special terminal preparation. The
vinyl tape is not acceptable; a high voltage tape must be used.
Installer is responsible for any damage caused by improper
wiring between starter and compressor motor.
Connect Power Wiresto Oil Pump Contactor — Connect power
wires to oil pump contactor mounted in machine power panel.
(See Fig. 19.) Use the electrical disconnect located in the
machine starter (if supplied), or a separate fused disconnect
as shown on job wiring diagrams. Check that power supply
voltage agrees with oil pump voltage. Follow correct phasing for proper motor rotation.
Do notwire into the top surface of the power panel. Knockouts are provided on the underside of the panel.
Table 13 — Relief Valve Locations and Data
Connect Power Wires to Oil Heater Contactor — Connect
control power wiring between the oil heater contactor terminals (Fig. 17 and 18) and terminals LL1 and LL2 on the
field wiring strip in the compressor motor starter. Refer to
Fig. 21 and wiring label on the chiller power panel.
Voltage to terminals LL1 and LL2 comes from a control transformer in a starter built to Carrier specifications. Do not connect an outside source of control power
to the compressor motor starter (terminals LL1 and LL2).
An outside power source will produce dangerous voltage at the line side of the starter, because supplying voltage at the transformer secondary terminals produces input level voltage at the transformer primary terminals.
Connect Communication and Control Wiring from Starter to
Power Panel — Connect control wiring from main motor starter
to the chiller power panel. All control wiring must use shielded
cable. Also connect the communications cable. Make sure
the control circuit is grounded in accordance with applicable
electrical codes and instructions on chiller control wiring
label.
RELIEF VALVE
LOCATION
Cooler
Economizer/Storage
Pumpout Unit CondenserALLALL1.50.01
*To ensure relief valve serviceability, and as required in ASHRAE 15,
latest edition, three-way valves and redundant relief valves are installed on the storage vessel. Only one half of the ‘‘No. of Valves’’
listed are in service at any time.
NOTES:
1. Thecooler relief C-factor is forboth cooler and condenser vented
through the cooler in accordance with ASHRAE (American
Society of Heating, Refrigeration, and Air Conditioning Engineers) 15, latest edition.
2. Relief valve discharge pipe sizing is to be calculated per latest
version of ASHRAE 15, using the tabulated C-factors and nominal pipe size listed above. Cooler and economizer/storage vessel rated relief valve pressure is 225 psig (1551 kPa).
3. The pumpout unit condenser contains less than 110lb (50 kg) of
HFC-134a,which isa GroupA1 refrigerant.TheASHRAE15 standard exempts small-volume vessels from the requirement to vent
outside. However, Carrier recommends that the pumpout condenser be connected to the rest of the vent system.
NOTE: The oil pump is powered through a field wiring terminal into
the power panel. Power to the controls and oil heater via the power
panel must be on circuits that can provide continuous service when
the compressor starter is disconnected.
SUPPLY
V-PH-HZ
115-1-60
115-1-50
115-1-60
115-1-50
FLALRA
3.50—
8.70—
22
Page 23
*Indicates chilled water pump control contacts or run status contacts.
†Indicates condenser water pump control contacts.
**Indicates tower fan relay contacts.
††Indicates circuit breaker shunt trip contacts.
\ Indicates remote alarm contacts.
NOTES:
I. GENERAL
1.0 Starters shall be designed and manufactured in accordance with Carrier Engineering Requirement Z-375.
1.1 All field-supplied conductors, devices, field-installation wiring, and termination ofconductors and devices, must be in compliance with all applicable codes and job specifications.
1.2 The routing of field-installed conduit and conductors and the location of fieldinstalled devices must not interfere with equipment access or the reading, adjusting,
or servicing of any component.
1.3 Equipment, installation, and all starting and control devices must comply with details in equipment submittal drawings and literature.
1.4 Contacts and switches are shown in the position they would assume with the circuit
deenergized and the chiller shut down.
1.5 WARNING — Do not use aluminum conductors.
1.6 Installer is responsible for any damage caused by improper wiring between starter
and machine.
II. POWER WIRING TO STARTER
2.0 Power conductor rating must meet minimum unit nameplate voltage and compressor motor RLA.
When (3) conductors are used:
Minimum ampacity per conductor = 1.25 x compressor RLA
When (6) conductors are used for Wye-Delta starting:
Minimum ampacity per conductor = 0.721 x compressor RLA
2.1 Lug adapters may be required if installation conditions dictate that conductors be
sized beyond the minimum ampacity required. Contact starter supplier for lug
information.
2.2 Compressor motor and controls must be grounded by using equipment grounding
lugs provided inside starter enclosure.
III. CONTROL WIRING
3.0 Field supplied control conductors to be at least 18 AWG or larger.
3.1 Chilled water and condenser water flow switch contacts, optional remote start device contacts and optional spare safety device contacts must have 24 vdc rating.
Max current is 60 ma, nominal current is 10 ma. Switches with gold plated bifurcated contacts are recommended.
3.2 Remove jumper wire between 12A and 12B before connecting auxiliary safeties between these terminals.
3.3 Pilot relays can control cooler and condenser pump and tower fan motor contactor
coil loads rated 10 amps at 115vacupto 3 amps at 600 vac. Control wiring required
for Carrier to start pumps and tower fan motors must be provided to assure
machine protection. If primary pump and tower fan motor are controlled by other
means, also provide a parallel means for control by Carrier. Do not use starter control transformer as the power source for pilot relay loads.
Fig. 17 — Typical Field Wiring (Low-Voltage Motors) with Free-Standing Starter
LEGEND
Required Power Wiring
Required Control Wiring
SMM — Starter Management Module
IV. POWER WIRING BETWEEN STARTERAND COMPRESSOR MOTOR
Options Wiring
3.4 Do not route control wiring carrying 30 v or less within a conduit which has wires
carrying 50 v or higher or along side wires carrying 50 v or higher.
3.5 Voltage selector switch in machine power panel isfactorysetfor 115vcontrolpower
source. Do not use the 230 v position. If this switch is set to 230 v position, the oil
heater will not operate.
3.6 Control wiring cables between starter and power panel must be shielded with minimum rating of 600 v, 80 C ground shield at starter. Wires A,B, and C are communication wires and must be run in a separate cable.
3.7 If optional oil pump circuit breaker is not supplied within the starter enclosure as
shown, it must be located within sight of the machine with wiring routed to suit.
3.8 Voltage to terminals LL1 and LL2 comes from a control transformer in a starter built
to Carrier specifications. Do not connect an outside source of control power to the
compressor motor starter (terminals LL1 and LL2). An outside power source will
produce dangerous voltage at the line sideof the starter,because supplying voltage
at the transformer secondary terminals produces input level voltage at the transformer primary terminals.
4.0 Low voltage (600 v or less) compressor motors have (6),5⁄8in. terminal studs (lead
connectors not supplied by Carrier). Either 3 or 6 leads must be run between compressor motor and starter, depending on type of motor starter employed. If only 3
leads are required, jumper motor terminals as follows: 1 to 6, 2 to 4, 3 to 5. Center
tocenter distance between terminals is 2
have nameplate stamped as to conforming with Carrier requirement Z-375. Medium
voltage (over 600 v) compressor motors have (3) terminals. Connections out of terminals are 3 in. long stranded wire pigtails, #4 AWG, strand wire for all medium
voltage motor sizes. Distance between terminal is 7
connectorsandinsulationforhighvoltagealternatingcurrentcableterminations(these
items are not supplied by Carrier). Compressor motor starter must have nameplate
stamped as to conforming with Carrier requirement Z-375.
4.1 When more than one conduit is used to run conductors from starter to compressor
motor terminal box, one conductor from each phase must be in each conduit to
prevent excessive heating. (e.g., conductors to motor terminals 1, 2 and 3 in one
conduit, and those to 4, 5 and 6 in another.)
4.2 Compressor motor power connections can be made through top, top rear or sides
of compressor motor terminal box using holes cut bycontractor to suit conduit. Flexible conduit should be used for the last few feet to the terminal box for unit vibration
isolation. Use of stress cones or 12 conductors larger than 500 MCM may require
an oversize (special) motor terminal box (not supplied by Carrier). Lead connections between 3-phase motors and their starters must not be insulated until Carrier
personnel have checked compressor and oil pump rotations.
4.3 Compressor motor frame to be grounded in accordance with the National Electrical
Code (NFPA-70) and applicable codes. Means for grounding compressor motor is
a pressure connector for #4 to 500 MCM wire, supplied and located in the back
lower left side corner of the compressor motor terminal box.
4.4 Do not allow motor terminals to support weight of wire cables. Use cable supports
and strain reliefs as required.
4.5 Use backup wrench when tightening lead connectors to motorterminalstuds.Torque
to 45 lb-ft max.
15
⁄16inches.Compressor motor starter must
9
⁄16inches. Use suitable splice
23
Page 24
Notes on following page.
LEGEND
PIC— Product Integrated Control
SMM — Starter Management Module
Required Power Wiring
Required Control Wiring
Options Wiring
Fig. 18 — Field Wiring (High Voltage Motors) with Optional Free-Standing Starter
24
Page 25
NOTES:
I GENERAL
1.0 Starters shall be designed and manufactured in accordance with
Carrier Engineering requirement Z-375.
1.1 All field-supplied conductors, devices and the field-installation wiring,
termination of conductors and devices, must be in compliance with all
applicable codes and job specifications.
1.2 The routing of field-installed conduit and conductors and the location of
field-installed devices, must not interfere with equipment access of the
reading, adjusting, or servicing of any component.
1.3 Equipment installation and all starting and control devices must comply
with details in equipment submittal drawings and literature.
1.4 Contacts and switches are shown in the position they would assume
with the circuit deenergized and the chiller shut down.
1.5 WARNING: Do not use aluminum conductors.
1.6 Installer is responsible for any damage caused by improper wiring between starter and machine.
II POWER WIRING TO STARTER
2.0 Power conductor rating must meet minimum unit nameplate voltage
and compressor motor RLA (rated load amps). When (3) conductors
are used:
Minimum ampacity per conductor =1.25 x compressor RLA
When (6) conductors are used:
Minimum ampacity per conductor =0.721 x compressor RLA.
2.1 Lug adaptersmay be required if installation conditions dictate thatconductorsbe sized beyond the minimumampacity required. Contact starter
supplier for lug information.
2.2 Compressor motor and controls must be grounded by using equipment grounding lugs provided inside starter enclosure.
III CONTROL WIRING
3.0 Field supplied control conductors to be at least 18AWG(AmericanWire
Gage), or larger.
3.1 Chilled water and condenser water flow switch contacts, optional remote start device contacts, and optional spare safety device contacts
must have 24 vdc rating. Maximum current is 60 ma, nominal current
is 10 ma. Switches with gold plated bifurcated contacts are
recommended.
3.2 Remove jumper wire between 12A and 12B before connecting auxiliary
safeties between these terminals.
3.3 Maximum loadon pilot relays is 10amps. Pilot relays can control cooler
and condenser pump and tower fan motor contactor coil loads rated up
to 10 amps at 115 vac or up to 3 amps at 600 vac. Control wiring required for Carrier to start pumps and tower fan motors must be provided to assure machine protection. If primary pump and tower motor
control is by other means, also provide a parallel means for control by
Carrier. Do not use starter control transformer as the power source for
pilot relay loads.
3.4 Do not route control wiring carrying 30 v or less within a conduit which
has wires carrying 50 v or higher or along side wires carrying 50 v or
higher.
3.5 Voltage selector switch in machine power panel is factory set for
115 v control and oil heater power source. The 230 v position is not
used. If switch is set to 230 v position, oil heater will not operate.
3.6 Control wiring cablesbetween starter and powerpanel must be shielded
with minimum rating of 600 v, 80 C. Ground shield at starter. Wires A,
B, and C arecommunication wires and must be run ina separate cable.
3.7 If optional oil pump circuit breaker is not supplied within the starter enclosure as shown, it must be located within sight of the machine with
wiring routed to suit.
3.8 Voltage to terminals LL1 and LL2 comes from a control transformer in
astarter built to Carrierspecifications. Do not connectan outside source
of control power to the compressor motor starter (terminals LL1 and
LL2). An outside power source will produce dangerous voltage at the
line side of the starter, because supplying voltage at the transformer
secondary terminals produces inputlevel voltage at the transformer primary terminals.
IV POWER WIRING BETWEEN STARTER AND COMPRESSOR MOTOR
4.0 Medium voltage (over 600 volts) hermetic compressor motors have
3 terminals. Use no. 4 AWG strand wires for all medium and high voltage hermetic motors. Distance between terminal is 7
suitable splice connectors and insulation for high-voltage alternating
current cable terminations (these items are not supplied by Carrier).
Compressor motor starter must have nameplate stamped as to conforming with Carrier requirement Z-375. Medium voltage open motors
have lug terminations (see certified drawings for size).
4.1 When more than one conduit is used to run conductors from starter to
compressor motor terminal box, one conductor from each phase must
be in each conduit, to prevent excessive heating, (e.g., conductors to
motor terminals 1, 2, and 3 in one conduit, and those to 1, 2, and 3 in
another).
4.2 Compressor motor power connections can be made through top, top
rear, or sides of compressor motor terminal box by using holes cut by
contractor to suit conduit. Flexible conduit should be used for the last
few feet to the terminal box for unit vibration isolation. Use of stress
cones may require an oversize (special) motor terminal box (not supplied by Carrier).
4.3 Compressor motor frame to be grounded in accordance with the NationalElectrical Code (NFPA-70)andapplicablecodes. Means for grounding compressor motor is a no. 4 AWG, 500 MCM pressure connector,
supplied and located in the lower left side corner of the compressor
motor terminal box.
4.4 Do not allow motor terminals to support weight of wire cables, use
cable supports and strain reliefs as required.
9
⁄16inches. Use
Fig. 18 — Field Wiring (High Voltage Motors) with Optional Free-Standing Starter (cont)
25
Page 26
LEGEND
Factory Wiring
Field Wiring
Oil Pump Terminal
Power Panel Component Terminal
Fig. 19 — Oil Pump Wiring
LEGEND
1—Chilled Water Pump Starter
2—Condenser Water Pump Starter
3—Cooling Tower Fan Starter
4—Condenser Water Pump
5—Chilled Water Pump
6—Disconnect
7—Oil Pump Disconnect (See Note 5)
8—Free-Standing Compressor Motor Starter
9—Chiller Auxiliary Power Panel
Piping
Control Wiring
Power Wiring
Fig. 20 — 17/19EX with Free-Standing Starter
19EX SHOWN
NOTES:
1. Wiring and piping shown are for general point-of-connection only
2. All wiring must comply with applicable codes.
3. Refer to Carrier System Design Manual for details regarding pip-
4. Wiring not shown for optional devices such as:
5. Oil pump disconnect may be located within the enclosure of Item
6. Water piping to the oil cooler is required on FA compressors.
26
and are not intended to show details fora specific installation. Certified field wiring and dimensional diagrams are available on request.
ing techniques.
• Remote Start-Stop
• Remote Alarms
• Optional Safety Device
• 4 to 20 mA Resets
• Optional Remote Sensors
8 — Free-Standing Compressor Motor Starter.
Page 27
LEGEND
Field Wiring
Power Panel Component Terminal
Fig. 21 — Oil Heater and Control Power Wiring
temperature range of −4 F to 140 F (−20 C to 60 C) is
required. See table below for cables that meet the
requirements.
MANUFACTURERCABLE NO.
Alpha2413 or 5463
AmericanA22503
Belden8772
Columbia02525
When connecting the CCN communication bus to a system element, a color code system for the entire network is
recommended to simplify installation and checkout. The following color code is recommended:
Fig. 22 — Carrier Comfort Network
Communication Bus Wiring
CARRIER COMFORT NETWORK INTERFACE — The
Carrier Comfort Network (CCN) communication bus wiring
is supplied and installed by the electrical contractor (if required by jobsite prints). It consists of shielded, 3-conductor
cable with drain wire.
The system elements are connected to the communication
bus in a daisy chain arrangement. The positive pin of each
system element communication connector must be wired to
the positive pins of the system element on either side of it.
The negative pins must be wired to the negative pins. The
signal ground pins must be wired to the signal ground pins.
See Fig. 23 for location of the CCN network connector
(COMM1) on the processor module.
NOTE: Conductors and drain wire must be 20 AWG
(American WireGage) minimum stranded, tinned copper. Individual conductors must be insulated with PVC, PVC/
nylon, vinyl, Teflon, or polyethylene. An aluminum/ polyester 100% foil shield and an outer jacket of PVC, PVC/
nylon, chrome vinyl, or Teflon with a minimum operating
SIGNAL TYPE
+Red1
GroundWhite2
−Black3
CCN BUS CONDUCTOR
INSULATION COLOR
COMM1 PLUG
PIN NO.
If a cable with a different color scheme is selected, a
similar color code should be adopted for the entire network.
At each system element, the shields of its communication
bus cables must be tied together. If the communication bus
is entirely within one building, the resulting continuous shield
must be connected to ground at only one single point. See
Fig. 23. If the communication bus cable exits from one building and enters another, the shields must be connected to ground
at the lightning suppressor in each building where the cable
enters or exits the building (one point only).
To connect the 17/19EX chiller to the network, proceed
as follows (Fig. 23):
1. Cut power to the PIC (Product Integrated Control) panel.
2. Remove the COMM1 plug from the processor module.
3. Cut a CCN wire and strip the ends of the RED, WHITE,
and BLACK conductors.
4. Using a wirenut, connect the drain wires together.
5. Insert and secure the RED wire to Terminal 1 of the
COMM1 plug.
6. Insert and secure the WHITE wire to Terminal 2 of the
COMM1 plug.
7. Insert and secure the BLACK wire to Terminal 3 of the
COMM1 plug.
8. Attach the COMM1 plug back onto the processor
module.
9. Mount a terminal strip in a convenient location.
10. Connect the opposite ends of each conductor to separate
terminals on the terminal strip.
11. Attach the CCN Network wiring:
a. Connect the RED wire to the matching location on
the terminal strip.
b. Connect the WHITE wire to the matching location
on the terminal strip.
c. Connect the BLACK wire to the matching location
on the terminal strip.
27
Page 28
Install Field Insulation
Protect insulation from weld heat damage and weld splatter. Cover with wet canvas cover during water piping
installation.
When installing insulation at the job site, insulate the fol-
lowing components (see Fig. 24 and Table 15):
• compressor motor
• cooler shell
• cooler tube sheets
• suction piping
• motor cooling drain
• oil cooler refrigerant side tubing
• utility vessel (low side)
Additional insulation of condenser and compressor com-
ponents and lines may be necessary to prevent condensation
on these components.
NOTE: Carrier does not provide waterbox insulation. Insulation of the waterbox covers must be field supplied at the
jobsite. When insulating the waterbox covers, allow enough
room for removal of the waterbox covers during servicing.
FACTORY INSULATION (OPTIONAL) — Optional
factory insulation is available for the evaporator shell and
tube sheets, suction pipe, compressor motors, and refrigerant drain line(s). Insulation applied at the factory is
(19.0 mm) thick and has a thermal conductivity K value of
● in.W
0.28(0.0404°C). Insulation conforms
Btu
hr
● ft2● °F
m
with UL Standard 94, Classification 94 HBF.
3
⁄4in.
Table 15 — Insulation Requirements
Sheet Foam Insulation
2
COMPONENT
Cooler Shell (Sizes 31-33)25423.6
Cooler Shell (Sizes 41-44)30628.4
Cooler Shell (Sizes 45-48)37434.7
Economizer Low Side Float Chamber484.5
Economizer Main Shell (with cooler sizes 31-44)857.9
Economizer Main Shell (with cooler sizes 45-48)11510.1
Suction Line252.3
Cooler Marine Waterbox (1 or 3 pass, with
frame-3 coolers)
Cooler Marine Waterbox (2 pass, with
frame-3 coolers)
Cooler Marine Waterbox (1 or 3 pass, with
frame-4 coolers)
Cooler Marine Waterbox (2 pass, with
frame-4 coolers)
Cooler NIH Waterbox (with frame-3 coolers)746.9
Cooler NIH Waterbox (with frame-4 coolers)888.2
Main Motor Shell (with −51 through −89
compressors)
Main Motor Shell (with 421 through 469 compressors)272.5
Main Motor Shell (with 531 through 599 compressors)413.8
Foam Tubing Insulation
TYPEFtm
1
⁄8( Foam Tubing92.7
1
5
⁄8( Foam Tubing20.6
1
2( Foam Tubing92.7
5( Foam Tubing144.3
NOTES:
1. Cooler value includes marine waterbox on one end (even-pass
arrangement).
2. Values are approximate.
3. Thermal insulation is available as a factory-installed option. Waterbox insulation must be field supplied.
ft
m
12611.7
1009.3
15814.7
12311.4
272.5
2
28
Page 29
19EX CHILLERS
LEGEND
Factory Wiring
Field Wiring
*Field-supplied terminal strip must be located in the control center.
†Switches S1 and S2 are factory set on PSIO modules. Do not alter the switches.
Fig. 23 — COMM1 CCN Communication Wiring for Multiple 17/19EX Chillers (Typical)
29
Page 30
FRONT VIEW
PLAN VIEW
— Area must be factory or field insulated
— Area to be field insulated, if ambient conditions require.
NOTE: Waterbox covers are to be insulated by the contractor.
IMPORTANT: 17EX insulation is identical to the 19EX insulation shown
above. 17EX motors do not require insulation.
Fig. 24 — Typical Insulation Area (19EX Shown)
Copyright 1996 Carrier Corporation
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 303-96Replaces: 17/19EX-1SI
Page 31
INSTALLATION START-UP REQUEST CHECKLIST
Machine Model Number: 17/19EXSerial Number:
To:
Attn:
The following information provides the status of the chiller installation.
1. The machine is level.
2. The machine components are installed and connected in
accordance with the installation instructions.
3. The isolation package and grouting (if necessary)
are installed.
4. The relief valves are piped to the atmosphere.
5. All piping is installed and supported. Direction of flow
is indicated in accordance with the installation instructions
and job prints.
a. Chilled water piping
b. Condenser water piping
c. Waterbox drain piping
d. Pumpout unit condenser piping (if installed)
e. Oil cooler water piping (FA compressors only)
f. Other
6. Gages are installed as called for on the job prints required
to establish design flow for the cooler and condenser.
a. Water pressure gages IN and OUT
b. Water temperature gages IN and OUT
7. The machine’s starter wiring is complete. The wiring is
installed per installation instructions and certified prints.
a. Power wiring to compressor motor. (Motor leads will
not be taped until the Carrier technician megger tests
the motor.)
b. Oil pump wiring
c. Oil heater/control wiring
d. Other
8. The motor starter has not been supplied by Carrier. It
has been installed according to the manufacturer’s
instructions.
9. The motor starter has not been supplied by Carrier and it
has been checked for proper operation.
COMMENTS:
Date
Project Name
Carrier Job Number
YES/NO
(N/A)
DATE TO BE
COMPLETED
CL-1
Page 32
TESTINGYES/NO
1. The cooling tower fan has been checked for blade pitch and
proper operation.
2. The chilled water and condenser water lines have been:
a. Filled
b. Tested
c. Flushed
d. Vented
e. Strainers cleaned
3. The chilled water and condenser water pumps have been
checked for proper rotation and flow.
4. The following cooling load will be available for start-up:
a. 25%
b. 50%
c. 75%
d. 100%
5. The refrigerant charge is at the machine.
6. Services such as electrical power and control air will be available at start-up.
7. The electrical and mechanical representatives will be available
to assist in commissioning the machine.
8. The customer’s operators will be available to receive instructions for proper operation of the chiller after start-up.
DATE TO BE
COMPLETED
Concerns about the installation/request for additional assistance:
I am aware that the start-up time for a Carrier chiller can take between 2 and 6 days depending on the model of the machine and
the options and accessories used with it.
Your contact at the job site will be
Phone number
Beeper number
Fax number
In accordance with our contract, we hereby request the services of your technician to render start-up services per contract terms
for this job on(Date). I understand that the technician’s time will be charged as extra services due to correcting items
in this checklist that are incomplete.
Signature of Purchaser
Signature of Job Site Supervisor
CUT ALONG DOTTED LINE
Copyright 1996 Carrier Corporation
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 CL-23-96Replaces: 17/19EX-1SI