Trane Installation, Operation And Maintenance Manual
Specifications and Main Features
Frequently Asked Questions
User Manual
Installation, Operation,
and Maintenance
CVHH Water-Cooled CenTraVac™™ Chillers
With Tracer® AdaptiView™ Control
CVHH
X39641257007
SSAAFFEETTYY WWAARRNNIINNGG
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and
air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered
equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in the
literature and on the tags, stickers, and labels that are attached to the equipment.
February 2018
CCVVHHHH--SSVVXX000011GG--EENN
Introduction
WARNING
CAU
TION
NOTICE
Read this manual thoroughly before operating or
servicing this unit.
Use the following checklist when testing UAT CRs/
MyTickets.
Warnings, Cautions, and Notices
Safety advisories appear throughout this manual as
required. Your personal safety and the proper
operation of this machine depend upon the strict
observance of these precautions.
The three types of advisories are defined as follows:
Indicates a potentially hazardous situation
which, if not avoided, could result in death or
serious injury.
Indicates a potentially hazardous situation
which, if not avoided, could result in minor or
moderate injury. It could also be used to alert
against unsafe practices.
Indicates a situation that could result in
equipment or property-damage only
accidents.
Important Environmental Concerns
Scientific research has shown that certain man-made
chemicals can affect the earth’s naturally occurring
stratospheric ozone layer when released to the
atmosphere. In particular, several of the identified
chemicals that may affect the ozone layer are
refrigerants that contain Chlorine, Fluorine and Carbon
(CFCs) and those containing Hydrogen, Chlorine,
Fluorine and Carbon (HCFCs). Not all refrigerants
containing these compounds have the same potential
impact to the environment. Trane advocates the
responsible handling of all refrigerants-including
industry replacements for CFCs and HCFCs such as
saturated or unsaturated HFCs and HCFCs.
Important Responsible Refrigerant
Practices
Trane believes that responsible refrigerant practices
are important to the environment, our customers, and
the air conditioning industry. All technicians who
handle refrigerants must be certified according to local
rules. For the USA, the Federal Clean Air Act (Section
608) sets forth the requirements for handling,
reclaiming, recovering and recycling of certain
refrigerants and the equipment that is used in these
service procedures. In addition, some states or
municipalities may have additional requirements that
must also be adhered to for responsible management
of refrigerants. Know the applicable laws and follow
them.
NNoottee:: Graphic labels (shown above) are used for CE
application only.
IImmppoorrttaanntt::
•Before servicing, disconnect all power
sources and allow at least 30 minutes
for capacitors to discharge.
•All electrical enclosures—unit or remote
—are IP2X.
CVHH-SVX001G-EN
3
X39003892001A
IInnttrroodduuccttiioonn
NNoottee:: Graphic labels (shown above) are used for CE
application only.
any other components originally attached to the fully
assembled unit— compliance with the following is
required to preserve the factory warranty:
•Trane, or an agent of Trane specifically authorized
to perform start-up and warranty of Trane®
products, will perform or have direct on-site
technical supervision of the disassembly and
reassembly work.
•The installing contractor must notify Trane—or an
agent of Trane specifically authorized to perform
startup and warranty of Trane® products—two
weeks in advance of the scheduled disassembly
work to coordinate the disassembly and
reassembly work.
•Start-up must be performed by Trane or an agent of
Trane specifically authorized to perform startup and
warranty of Trane® products.
Trane, or an agent of Trane specifically authorized to
perform start-up and warranty of Trane® products, will
provide qualified personnel and standard hand tools to
perform the disassembly and reassembly work at a
location specified by the contractor. The contractor
shall provide the rigging equipment such as chain falls,
gantries, cranes, forklifts, etc. necessary for the
disassembly and reassembly work and the required
qualified personnel to operate the necessary rigging
equipment.
Factory Warranty Information
Compliance with the following is required to preserve
the factory warranty:
AAllll UUnniitt IInnssttaallllaattiioonnss
Startup MUST be performed by Trane, or an authorized
agent of Trane, to VALIDATE this WARRANTY.
Contractor must provide a two-week startup
notification to Trane (or an agent of Trane specifically
authorized to perform startup).
When a new chiller is shipped and received from our
Trane manufacturing location and, for any reason, it
requires disassembly or partial disassembly, and
reassembly— which could include but is not limited to
the evaporator, condenser, control panel, compressor/
motor, economizer, purge, factory-mounted starter or
Copyright
This document and the information in it are the
property of Trane, and may not be used or reproduced
in whole or in part without written permission. Trane
reserves the right to revise this publication at any time,
and to make changes to its content without obligation
to notify any person of such revision or change.
Trademarks
All trademarks referenced in this document are the
trademarks of their respective owners.
The unit nameplate is located on the left side of the
control panel. A typical unit nameplate is illustrated in
the following figure and contains the following
information:
•Unit model and size descriptor
•Unit electrical requirements
•Correct operating charge and refrigerant type
•Unit test pressures and maximum operating
pressures
•Unit literature
SSeerriiaall NNuummbbeerr.. The unit serial number provides the
specific chiller identity. Always provide this serial
number when calling for service or during parts
identification.
SSeerrvviiccee MMooddeell NNuummbbeerr.. The service model represents
the unit as built for service purposes. It identifies the
selections of variable unit features required when
ordering replacements parts or requesting service.
NNoottee:: Unit-mounted starters are identified by a
separate number found on the starter.
PPrroodduucctt DDeessccrriippttiioonn BBlloocckk.. The CenTraVac™ chiller
models are defined and built using the Product
Definition and Selection (PDS) system. This system
describes the product offerings using a product coding
block which is made up of feature categories and codes
that identify all characteristics of a unit.
Figure 1. Typical unit nameplate
8
CVHH-SVX001G-EN
TRANEMADE IN USAX39002458010B
MODEL NO.
SALES ORDERSERIAL NO.
16 6
34 6
290 10
75 10
290 10
75 10
290 10
75 10
DETAIL B
ECONOMIZER
DETAIL C
OIL TANK
DETAIL D
EVAPORATOR
A
B
C
D
2614
DETAIL A
CONDENSER
4935
939
STD
HTRC
1131
789
CD-001
UUnniitt NNaammeeppllaattee
Compressor Nameplate
The compressor assembly has a separate model
number which is required to identify internal and
external compressor parts. The model number begins
with “CCHH” and the nameplate is located on the foot
of the volute.
Pressure Vessel Nameplates
Figure 3. ASME nameplate (all dimensions are metric)
Figure 2. Compressor nameplate
NNoottee:: The serial number space on the compressor
nameplate will be intentionally left blank.
CVHH-SVX001G-EN
9
4
4
50,8
50,8
12,7
25,4
DETAIL A
ECONOMIZER
D
A
B
C
DETAIL B
CONDENSER
939
CENTERED
1131
DETAIL C
OIL TANK
2735
DETAIL D
EVAPORATOR
789
CD-001
UUnniitt NNaammeeppllaattee
Figure 4. PED nameplate (all dimensions are metric)
10
CVHH-SVX001G-EN
Model Number Descriptions
CVHH CenTraVac Chiller Description
Digit 1, 2 — Simplex CenTraVac™™ Chiller
Digit 3 — Direct Drive
Digit 4 — Development Sequence
Digit 5, 6, 7 — Nominal Total Compressor
Tonnage
Digit 8 — Unit Motor Voltage
Digit 9 — Unit Type
Digit 10, 11 — Design Sequence
Digit 12 — Manufacturing Location
Digit 13 — Hot Gas Bypass (HGB)
Digit 14 — Starter Type
Digit 15 — Control Enclosure
Digit 16 — Evaporator Shell Size
Digit 17 — Evaporator Tube Bundle
Digit 18 — Evaporator Tubes
Digit 19 — Evaporator Waterbox
Digit 20 — Condenser Shell Size
Digit 21 — Condenser Tube Bundle
Digit 32 — Control: Enhanced Protection
Digit 33 — Control: Extended Operation
Digit 34 — Tracer®® Communication
Interface
Digit 35 — Special Options
Digit 36 — Control: Water Flow Control
Digit 37 — Control: Chilled Water Reset
Digit 38 — Control: Heat Recovery/
Auxiliary Temperature Sensors
Digit 39 — Industrial Chiller Package
(INDP)
Digit 40 — Control Power Transformer
(CPTR)
Digit 41 — Thermal Dispersion Water
Flow Proving
Digit 42 — Compressor Motor Frame Size
CCHH Centrifugal Compressor
Description
The compressor assembly has a separate
model number which is required to identify
internal and external compressor parts. The
model number begins with “CCHH” and the
nameplate is located on the foot of the volute.
Digit 1, 2 — Unit Function
Digit 3 — Drive
Digit 4 — Development Sequence
Digit 5, 6, 7 — Nominal Total Compressor
Tonnage
Digit 8 — Compressor Motor Voltage
Digit 9 — Compressor Motor Frame Size
Digit 10, 11 — Design Sequence
Digit 12 — Manufacturing Location
Digit 13, 14, 15, 16 — Compressor Motor
Power (kW)
Trane recommends that indoor CenTraVac™ chiller
installations fully meet or exceed the guidelines of the
current version of ASHRAE Standard 15, in addition to
any applicable national, state, or local requirements.
This typically includes:
•A refrigerant monitor or detector that is capable of
monitoring and alarming within the acceptable
exposure level of the refrigerant, and that can
actuate mechanical ventilation.
•Audible and visual alarms, activated by the
refrigerant monitor, inside the equipment room and
outside of every entrance.
•The equipment room should be properly vented to
the outdoors, using mechanical ventilation that can
be activated by the refrigerant monitor.
•The purge discharge and the rupture disk must be
properly piped to the outdoors.
•If required by local or other codes, a self-contained
breathing apparatus should be available in close
proximity to the equipment room.
For the USA, refer to the latest copy of ASHRAE
Standard 15 for specific guidelines. Trane assumes no
responsibility for any economic, health, or
environmental issues that may result from an
equipment room’s design or function.
NNoottee:: The holding charge should register
approximately 5 psig (34.5 kPaG) at 72°F (22.2°C).
Place a gauge on the access valve provided
(indicated by arrow and circle in the following
figure) on the refrigerant pump discharge line to
verify the holding charge. This access valve is
located on the front of the oil tank, which is at the
right rear corner of the chiller. If the charge has
escaped, contact your local Trane sales office for
instructions.
3. The loose parts box and isolator pads ship on top of
the control panel box.
4. Check the oil sump sight glasses to verify that the
sump was factory-charged with 21 gallons (79.5 L)
of oil. The oil level should be visible to about
halfway in the top sight glass. If no oil level is
visible, contact your local Trane sales office.
IImmppoorrttaanntt:: If isolation springs are installed, do NOT
block oil tank serviceability.
Figure 5. Refrigerant pump discharge line access
valve
Unit Shipment
Inspect unit while it is still on the truck for any shipping
damage. The chiller ships shrink-wrapped in a 0.010-in.
(0.254 mm) recyclable film protective covering. Do NOT
remove shrink-wrap for inspection! Inspect for damage
to the shrink-wrap and determine if physical damage
has occurred.
Each chiller ships from the factory as a hermetically
assembled package; it is factory-assembled, -wired,
and -tested. All openings except for the waterbox vent
and drain holes are covered or plugged to prevent
contamination during shipment and handling.“Unit
Components,” p. 16 shows an illustration of a typical
unit and its components. As soon as the unit arrives at
the job site, inspect it thoroughly for damage and
material shortages. In addition:
1. Verify the hermetic integrity of the unit by checking
the chiller pressure for an indication of holding
charge pressure.
2. To prevent damaging moisture from entering the
unit and causing corrosion, each chiller is
pressurized with 3 to 5 psig (20.7 to 34.5 kPaG) of
dry nitrogen before shipment.
General Information
Regulations regarding waste handling are constantly
changing. To ensure that personnel are in compliance
with the latest local, state, and federal regulations,
contact your local waste management office for the
proper procedures on handling, disposal, transporting,
12
CVHH-SVX001G-EN
PPrree--IInnssttaallllaattiioonn
and storage of oil, oil filters, refrigerant filters, and filter
dryer cores.
Installation Requirements and
Contractor Responsibilities
A list of the contractor responsibilities typically
associated with the unit installation process is
provided.
Type of Requirement
Foundation
Rigging
Disassembly/Reassembly
(as required)
Isolation
Electrical
Trane Supplied
Trane Installed
•Trane will perform or have
direct on-site supervision
of the disassembly and
reassembly work (contact
your local Trane office for
pricing)
•Circuit breakers or fusible
disconnects (optional)
NNoottee:: The chiller should remain within its protective
shrink-wrap covering during storage.
Field Supplied
Field Installed
•Meet foundation requirements
•Safety chains
•Clevis connectors
•Lifting beam
•Isolation pads or spring isolators
•Optional spring isolators, when required, are
installed by others; do NOT overload springs and do
NOT install isolation springs if they block serviceable
parts such as the oil tank system, service valves,
etc.
•Circuit breakers or fusible disconnects (optional)
•Electrical connections to unit-mounted starter
(optional)
•Electrical connections to remote-mounted starter
(optional)
•Wiring sizes per submittal and National Electric Code
(NEC) or local codes
•PFCCs (remote mounted starter optional only)
•Terminal lugs
•Ground connection(s)
•Jumper bars
•BAS wiring (optional)
•Inter-processor communication (IPC) wiring (AFD
and remote-mounted starters only)
•Control voltage wiring (AFD and remote-mounted
starters only)
•Oil pump interlock wiring (AFD and remote mounted
starters only)
•High condenser pressure interlock wiring (AFD and
remote-mounted starters only)
•Chilled water pump contactor and wiring including
interlock
•Condenser water pump contactor and wiring
including interlock
•Option relays and wiring
CVHH-SVX001G-EN
13
PPrree--IInnssttaallllaattiioonn
Type of Requirement
Water piping
Relief
Insulation
Water Piping Connection
Components
Other Materials
“Appendix B: CenTraVac™
Chiller Installation
Completion and Request
for Trane Service,” p. 119
(CTV-ADF001*-EN; refer
to “Appendix A: Forms and
Check Sheets,” p. 118)
Chiller start-up
commissioning
Post-commissioning
transport of empty
refrigerant containers for
return or recycling
(a)
Start-up must be performed by Trane or an agent of Trane specifically authorized to perform start-up and warranty of Trane® products. Contractor shall
provide Trane (or an agent of Trane specifically authorized to perform start-up) with notice of the scheduled start-up at least two weeks prior to the
scheduled start-up.
(a)
Trane Supplied
Trane Installed
•Rupture disk assembly
•RuptureGuard™
(optional)
•Insulation (optional)
Flanged (optional)
•Trane, or an agent of
Trane specifically
authorized to perform
start-up of Trane®
products
Trane Supplied
Field Installed
•Flow sensing devices
(may be field supplied)
Flanged (optional)
•Victaulic® to flange
adapter for 150 psig
(1034.2 kPaG)
waterboxes
Field Supplied
Field Installed
•Taps for flow sensing devices
•Taps for thermometers and gauges
•Thermometers
•Strainers (as required)
•Water flow pressure gauges
•Isolation and balancing valves in water piping
•Vents and drain on waterbox valves (one each per
pass)
•Pressure relief valves (for waterboxes as required)
•Vent line and flexible connector and vent line from
rupture disk to atmosphere
•Insulation
•Chiller feet insulation
Victaulic®
•Victaulic® coupling for 150 psig (1034.2 kPaG) and
300 psig (2068.4 kPaG) waterboxes
•Fasteners for flanged-type connections (optional)
•Material and equipment to perform leak testing
•Dry nitrogen (8 psig [55.2 kPaG] maximum per
machine as needed)
•To be completed by installing contractor prior to
contacting Trane for start-up
•Move empty refrigerant containers to an easily
accessible point of loading
•Do not remove any plastic coverings•Do not remove any plastic coverings•Do not remove any plastic coverings
•Do not charge the chiller with refrigerant
•If additional refrigerant is on site, follow
manufacturer’s storage requirements
•Verify dry nitrogen pressure using gauge
located on the evaporator shell reads
3 to 5 psig (20.7 to 34.5 kPaG)
•Notify the local Trane office if charge has
escaped
•Do not charge the chiller with refrigerant
•If additional refrigerant is on site, follow
manufacturer’s storage requirements
•Verify dry nitrogen pressure using gauge
located on the evaporator shell reads
3 to 5 psig (20.7 to 34.5 kPaG)
•Notify the local Trane office if charge has
escaped
•Do not operate purge unit•Do not operate purge unit•Do not operate purge unit
•Verify waterbox and tube bundles are
clean and dry
(a)
If the chiller will be stored for more than six months after production, contact your local Trane Service Agency for required extended storage actions to
minimize impact to the chiller and preserve the warranty.
Location requirements:
•Solid foundation
•Vibration free
•Dry
•Temperature range -40°F to 158°F
(-40°C to 70°C)
•Do not charge the chiller with refrigerant
•If additional refrigerant is on site, follow
manufacturer’s storage requirements
•Verify dry nitrogen pressure using gauge
located on the evaporator shell reads 3 to 5 psig
(20.7 to 34.5 kPaG)
•Notify the local Trane office if charge has
escaped
•Verify waterbox and tube bundles are clean and
dry
•Conduct an oil analysis and verify no oil
breakdown
(a)
•Repeat yearly
•Replace oil if breakdown has occurred
•If no oil analysis program has been followed,
replace oil prior to start-up
CVHH-SVX001G-EN
15
1
2
3
4
5
6
7
8
9
0
-
0
PPrree--IInnssttaallllaattiioonn
Unit Components
NNoottee:: The control panel side of the unit is always
designated as the front side of the unit.
Figure 6. Typical CVHH CenTraVac™™ chiller
1. Suction Elbow
2. Compressor
3. Terminal Box
4. Control Panel
5. Condenser
6. Motor Housing
7. Economizer
8. Oil Tank Assembly
9. Purge
10. Evaporator
11. Display Panel
16
CVHH-SVX001G-EN
Unit Clearances and Weights
3 ft. (92 cm)
A
18 in. (46 cm)
Economizer
Condenser
Evaporator
Motor
Right-hand tube pull
shown, apply tube pull
clearance dimension to
left end for left-hand
tube pull.
Optional
unit-mounted starter
These dimensions per
NEC Article 110
B
C
D
E
Recommended Unit Clearances
Adequate clearances around and above the chiller are
required to allow sufficient access for service and
maintenance operations. Specific unit clearance
requirements are indicated in the submittal package
provided for your unit.
•Do NOT install piping or conduit above the
compressor motor assembly or behind the suction
elbow of the unit.
•Minimum vertical clearance above the unit is 3 ft
(92 cm).
Figure 7. Clearance requirements
•Use a housekeeping pad to provide better service
clearances; refer to submittal for more information.
Per National Electric Code (NEC) Article 110: Unit
mounted starters from 0 to 600V require a 42 inch
(107 cm) clearance, 601 to 2500V require a 48 inch
(122 cm) clearance, and 2501 to 9000V require a 60 inch
(152 cm) clearance. Refer to NEC and local electrical
codes for starter and control panel clearance
requirements.
Note: All dimensions are approximate; refer to the unit submittal package for exact dimensions for your unit.
ABCDE
in.
9624416642242810873794112285
9624416642242810873691128325
10727218647247912173486111282
10727218647247912173794131333
10727218647248012193794120305
12030518647249312523897118300
120305186472492125042107143363
cm
in.
cm
in.
cm
General Weights
Weights (lb)
IImmppoorrttaanntt:: The weight information provided here
should be used for general information
only. Trane does not recommend using this
weight information for considerations
relative to chiller handling, rigging, or
placement. The large number of variances
between chiller selections drives variances
in chiller weights that are not recognized in
these tables. For specific weights for your
chiller, refer to your submittal package.
3. Heaviest possible bundle and motor combination.
4. Operating weights assume the largest possible refrigerant charge.
5. Industrial Control Panel (INDP) option, add 50 lb.
6. Control Power Transformer (CPTR) option, add 280 lb.
7. Supplemental Motor Protection (SMP) option, add 500 lb.
8. To calculate the maximum chiller weight with starter/drive, add the starter/AFD weight from the following table (maximum weights, unit-mounted
starters/AFDs [lb]) to the chiller maximum weight from this table.
Comp Size
NTONEVSZCDSZ
950–10501023100M100M4902442643
950–10501023100L100L5082443940
950–10501023100M10HM5672349522
950–10501023130M130M5459246618
950–10501023130M13HM6390855122
950–10501023160M200M6537755345
950–10501023200L220L7368760655
950–10501023220L220L8080666388
15501023200L200L7234560561
15501023200L20HL8168668986
15501023220L220L8050666088
15501023220L22HL9482079484
CPKW
Evap Size
Cond Size
Weights without Starters
OperatingShipping
Table 4. Maximum weights, unit-mounted starters/
Adaptive Frequency™™ Drives (AFDs) (lb)
Low Voltage (less than 600 volts)
Adaptive Frequency Drive (less than
600 volts)
Medium Voltage (2300–6600 volts)
Note: All weights are nominal and ±10%.
Wye-delta
Solid State557
900 amp
1210 amp
Across-the-line652
Primary Reactor
Autotransformer1702
557
3000
3000
1602
Weights (kg)
IImmppoorrttaanntt:: The weight information provided here
should be used for general information
only. Trane does not recommend using this
weight information for considerations
relative to chiller handling, rigging, or
placement. The large number of variances
between chiller selections drives variances
in chiller weights that are not recognized in
these tables. For specific weights for your
chiller, refer to your submittal package.
•The standard chiller is designed for
indoor use only and as such has NEMA
Type 1 or IP 20 enclosures.
•For chillers in unheated equipment
rooms, contact your local Trane Service
Agency for methods to ensure that the
oil temperature is maintained suitable
for proper operation of the chiller.
To ensure that electrical components operate properly,
do NOT locate the chiller in an area exposed to dust,
dirt, corrosive fumes, or excessive heat and humidity.
The ambient temperature range for chiller operation is
34°F to 104°F (1.1°C to 40°C).
Foundation Requirements
Chiller mounting surface must be:
•rigid non-warping mounting pads or a concrete
foundation, and
•able to support the chiller at its full operating
weight (including completed piping and full
operating charges of refrigerant, oil, and water).
For proper unit operation, the chiller must be level
within 1/16 in. (1.6 mm) over its length and width when
set into place on the mounting surface. “Weights
(lb),” p. 18 and “Weights (kg),” p. 19 show
approximate weights for various chiller sizes and
options in pounds and kilograms, respectively.
NNoottee:: For specific weight information, refer to the unit
submittal package.
IImmppoorrttaanntt:: Trane will not assume responsibility for
equipment problems resulting from an
improperly designed or constructed
foundation.
Rigging
Lifting is the recommended method for moving
chillers. Suggested lifting arrangements for standard
units are described in “Standard Chiller Lift,” p. 22.
1. Insert clevis connections at the points indicated in
the following figure. A 2.5 in. (63.5 mm) diameter
lifting hole is provided at each of these points.
2. Attach the lifting chains or cables.
3. Once the lifting cables are in place, attach a safety
chain or cable between the first-stage casing of the
compressor and the lifting beam.
IImmppoorrttaanntt:: There should NOT be tension on this
safety cable; the cable is used only to
prevent the unit from rolling during the
lift.
™
chillers
22
CVHH-SVX001G-EN
Jack slots
15 feet
(4.6 m)
minimum
effective
length
Safety
chain or
cable
IInnssttaallllaattiioonn:: MMeecchhaanniiccaall
4. Position isolator pads or spring isolators beneath
the chiller feet (refer to “Unit Isolation,” p. 24 for
instructions).
NNoottee:: Follow instructions provided by the spring
isolator manufacturer, being careful to not
damage isolator adjustment screw.
5. Once the isolators are in place, lower the chiller—
working from end to end—in small increments to
maintain stability.
6. When lift is complete, detach the clevis connections
and safety chain.
If the chiller cannot be moved using a standard chiller
lift, consider the following:
•When job site conditions require rigging of the
chiller at an angle greater than 45° from horizontal
(end-to-end), the unit may require removal of the
compressor. Contact Trane or an agent of Trane
specifically authorized to perform start-up and
warranty of Trane® products regarding the
disassembly and reassembly work. For more
information, refer to “Factory Warranty
Information,” p. 4.
NNoottee:: Disassembly and reassembly work includes
dowel-pinning the compressor and removing
it from the unit. Contact Trane or an agent of
Trane specifically authorized to perform startup and warranty of Trane
specific rigging instructions. Do NOT attempt
to rotate the chiller onto its side.
•When lifting the chiller is either impractical or
undesirable, attach cables or chains to the jacking
slots shown in the figure in “Standard Chiller
Lift,” p. 22; then push or pull the unit across a
smooth surface. Should the chiller be on a shipping
skid, it is not necessary to remove the skid from the
chiller before moving it into place.
•If removal of the compressor or economizer
assembly is necessary to move the chiller to the
®
products for
Unit Isolation
To minimize sound and vibration transmission through
the building structure and to ensure proper weight
distribution over the mounting surface, always install
isolation pads or spring isolators under the chiller feet.
NNoottee:: Isolation pads (refer to the figure in “Isolation
Pads,” p. 24) are provided with each chiller
unless spring isolators are specified on the sales
order.
Specific isolator loading data is provided in the unit
submittal package. If necessary, contact your local
Trane sales office for further information.
IImmppoorrttaanntt:: When determining placement of isolation
pads or spring isolators, remember that the
control panel side of the unit is always
designated as the front side of the unit.
Isolation Pads
When the unit is ready for final placement, position
isolation pads (18-in. [457.2-mm] sides) end for end
under the full length of the chiller leg. The pads
measure 9 in. × 18 in. (228.6 mm x 457.2 mm) and on
some units there may be small gaps between pads.
Pads are provided to cover entire foot.
Figure 9. Isolation pad and dimensions
A = 3/8 in. (9.5 mm)
B = 18 in. (457.2 mm)
C = 9 in. (228.6 mm)
Remember that the chiller must be level within 1/16 in.
(1.6 mm) over its length and width after it is lowered
onto the isolation pads. In addition, all piping
connected to the chiller must be properly isolated and
supported so that it does not place any stress on the
unit.
Spring Isolators
Spring isolators should be considered whenever chiller
installation is planned for an upper story location. Base
isolator placement is shown in the following figure;
also refer to the following table.
24
CVHH-SVX001G-EN
1
2
3
4
1
2
3
4
56
Isolator Configuration 1
Isolator Configuration 2
Width
Length
Evap
Width
Length
Width
Origin:
Right front corner of
evap right front foot
Spring isolators typically ship assembled and ready for
installation. To install and adjust the isolators properly,
follow the provided instructions.
NNoottee:: Do NOT adjust the isolators until the chiller is
piped and charged with refrigerant and water.
IImmppoorrttaanntt:: Do NOT block any serviceable components
such as the lubrication system with fieldinstalled devices such as spring isolators.
1. Position the spring isolators under the chiller as
shown in the preceding figure. Ensure that each
isolator is centered in relation to the tube sheet.
CVHH-SVX001G-EN
NNoottee:: Spring isolators shipped with the chiller may
not be identical. Compare the data provided
in the unit submittal package to determine
proper isolator placement.
2. Set the isolators on the sub-base; shim as
necessary to provide a flat, level surface at the
same elevation for the end supports.
IImmppoorrttaanntt:: Support the full underside of the
isolator base plate; do NOT straddle
gaps or small shims.
3. If required, screw the isolators to the floor through
the slots provided, or cement the pads.
NNoottee:: Fastening the isolators to the floor is not
necessary unless specified.
25
Side View of UnitEnd View of Unit
Center
tube sheet
support leg
Outside
edge of
tube sheet
Center of
isolator
spring
Note: The spring isolator must be
centered in relation to the tube sheet.
Do not align the isolator with the flat
part of the chiller foot since the tube
sheet is often off center.
Note: The length of the
isolator should be parallel
to the leg.
IInnssttaallllaattiioonn:: MMeecchhaanniiccaall
4. If the chiller must be fastened to the isolators, insert
cap screws through the chiller base and into holes
drilled and tapped in the upper housing of each
isolator.
IImmppoorrttaanntt:: Do NOT allow the screws to protrude
below the underside of the isolator
upper housing, or interfere with the
adjusting screws. An alternative
method of fastening the chiller to the
isolators is to cement the neoprene
pads.
5. Set the chiller on the isolators; refer to “Standard
Chiller Lift,” p. 22. The weight of the chiller will
force down the upper housing of each isolator, and
could cause it to rest on the isolator’s lower
housing (refer to the following figure).
6. Check the clearance on each isolator. If this
dimension is less than 1/4 in. (6.35 mm) on any
isolator, use a wrench to turn the adjusting screw
one complete revolution upward.
NNoottee:: When the load is applied to the isolators
(refer to Step 5), the top plate of each isolator
moves down to compress the springs until
either the springs support the load or the top
plate rests on the bottom housing of the
isolator. If the springs are supporting the load,
screwing down on the adjusting screw (refer
to Step 7) will raise the chiller.
7. Turn the adjusting screw on each of the remaining
isolators to obtain the required minimum clearance
of 1/4 in. (6.35 mm).
8. Once the minimum required clearance is obtained
on each of the isolators, level the chiller by turning
the adjusting screw on each of the isolators on the
low side of the unit. Work from one isolator to the
next.
IImmppoorrttaanntt:: The chiller must be level to within 1/
16 in. (1.6 mm) over its length and
width, and the clearance of each
isolator must be at least 1/4 in.
(6.35 mm).
Figure 11. Chiller foot and isolator orientation
IImmppoorrttaanntt:: Do NOT install spring isolators or brackets
in such a way that they could inhibit chiller
servicing such as charging or evacuation,
oil tank service, etc.
Leveling the Unit
The chiller must be set level within 1/16 in. (1.6 mm).
1. Measure and make a punch mark an equal distance
up from the bottom of each foot of the chiller.
2. Suspend a clear plastic tube along the length of the
chiller as shown in the following figure.
3. Fill the tube with water until the level aligns with
the punch mark at one end of the chiller.
4. Check the water level at the opposite mark. If the
water level does not align with the punch mark, use
full length shims to raise one end of the chiller until
the water level at each end of the tube aligns with
the punch marks at both ends of the chiller.
5. Once the unit is level across its length, repeat the
first three steps to level the unit across its width.
26
CVHH-SVX001G-EN
Figure 12. Leveling the chiller
1
2
IInnssttaallllaattiioonn:: MMeecchhaanniiccaall
NNoottee:: Use of a laser level is an acceptable alternative
method to level the unit.
IImmppoorrttaanntt:: Immediately report any unit damage
incurred during handling or installation at
the job site to the Trane sales office.
CVHH-SVX001G-EN
27
Installation: Water Piping
Overview
The following water piping circuits must be installed
and connected to the chiller:
•Pipe the evaporator into the chilled water circuit.
•Pipe the condenser into the cooling tower water
circuit.
•Optional: A heat-recovery condenser water circuit.
•Optional: An auxiliary condenser water circuit.
NNoottee:: Piping must be arranged and supported to avoid
stress on the equipment. It is strongly
recommended that the piping contractor does
not run pipe closer than 3 ft (0.9 m) minimum to
the equipment. This will allow for proper fit upon
arrival of the unit at the job site. Any adjustment
that is necessary can be made to the piping at
that time. Expenses that result from a failure to
follow this recommendation will NOT be paid by
Trane.
Piping suggestions for each of the water circuits listed
above are outlined in “Evaporator and Condenser
Water Piping,” p. 30. General recommendations for the
installation of field-supplied piping components (e.g.,
valves, flow switches, etc.) common to most chiller
water circuits are listed in the following sections.
Water Treatment
The use of untreated or improperly treated water in a
CenTraVac™ chiller may result in inefficient operation
and possible tube damage.
IImmppoorrttaanntt:: Trane strongly recommends using the
services of a qualified water treatment
specialist to determine necessary water
treatment. A label with a customer
disclaimer note is affixed to each unit.
Locate pressure gauge taps in a straight length of pipe.
Place each tap a minimum of one pipe diameter
downstream of any elbow, orifice, etc. For example, for
a 6 in. (16 cm) pipe, the tap would be at least 6 in. (16
cm) from any elbow, orifice, etc.
1. Install field-supplied air vents and drain valves on
the waterboxes. Each waterbox is provided with a
National Pipe Thread Female (NPTF) vent and drain
connection; the openings are 3/4 in. (19.05 mm).
2. If necessary for the application, install pressurerelief valves at the drain connections on the
evaporator and condenser waterboxes. To do so,
add a tee with the relief valve attached to the drain
valve. Follow local codes for determining if drain
connection is large enough for relief devices.
To determine whether or not pressure relief valves
are needed for a specific application, keep in mind
that:
a. Vessels with close-coupled shutoff valves may
cause high potentially damaging hydrostatic
pressures as fluid temperature rises.
b. Relief valves are required by American Society
of Mechanical Engineers (ASME) codes when
the waterside is ASME. Follow ASME guidelines
or other applicable codes/local regulation to
ensure proper relief valve installation.
Install a strainer in the entering side of each piping
circuit to avoid possible tube plugging in the chiller
with debris.
Required Flow-Sensing Devices
The ifm efector® flow detection controller and sensor
(refer to “Water Flow Detection Controller and Sensor
—ifm efector,” p. 29) is used to verify evaporator and
condenser water flows.
If a customer-supplied flow sensing device is used to
ensure adequate chiller flow protection, refer to the
wiring diagrams that shipped with the unit for specific
electrical connections.
Be sure to follow the manufacturer’s recommendations
for device selection and installation.
Water Flow Detection Controller and
Sensor—ifm efector
IImmppoorrttaanntt:: Before installing the ifm efector®flow
detection controller and sensor, use a
marker to draw a line on the probe at 3.5 in.
(8.9 cm) from the end of the probe. Do NOT
insert more than 3.5 in. (8.9 cm) of the
probe length into the pipe. Refer to the
following figure.
Figure 13. Installation of ifm efector®® flow detection
controller and sensor
1. Mount the 1/2-in. NPT adapter in a horizontal or
vertical section of pipe. The maximum distance
CVHH-SVX001G-EN
from the control panel must not exceed 29.5 ft (9 m)
(see item labeled “1” in the preceding figure). Allow
at least five pipe diameters straight run of pipe
upstream of the sensor location, and three pipe
diameters straight run of pipe downstream of the
sensor location.
NNoottee:: In the case of a horizontal pipe, mounting the
sensor in the side of the pipe is preferred. In
the case of a vertical pipe, mounting the
sensor in a place where the water flows
upwards is preferred.
2. Insert the flow sensor probe (see item labeled “2”
in the preceding figure) through the 1/2-in. NPT
adapter so that 3 to 3.5 in. (7.6 to 8.9 cm) of the
probe’s length extends into the pipe. Tighten the 1/
2-in. NPT adapter as needed to prevent leakage and
keep the probe from backing out under pressure.
DDoo NNOOTT eexxcceeeedd 4400 fftt··llbb ((5544..22 NN··mm)) ooff ttoorrqquuee oonn
tthhee ffiittttiinngg.. SSeennssoorr ddaammaaggee ccaann ooccccuurr iiff iitt iiss
oovveerrttiigghhtteenneedd..
NNoottee:: When installed, the tip of the ifm efector
sensor probe must be at least 1 in. (2.54 cm)
away from any pipe wall. Do NOT insert more
than 3.5 in. (8.9 cm) of the probe length into
the pipe.
3. Install the Micro DC Cable by inserting it through
the wire openings on the back side of the control
panel (see item labeled “3” in the preceding figure).
Install the supplied Micro DC Cable (29.5 ft [9 m] in
length) to the Flow Probe and hand-tighten the
connector nut.
4. Plug the other end of the Micro DC Cable into the
Flow Control Monitor with the Combicon connector
(see item labeled “4” in the preceding figure). Refer
to the following figure for cable wiring.
®
NNOOTTIICCEE
DDoo NNoott AAppppllyy EElleeccttrriiccaall PPoowweerr ttoo aa
UUnniitt iinn aa VVaaccuuuumm!!
NNoottee:: Graphic labels (shown above) are used for CE
application only.
IImmppoorrttaanntt::
•Before servicing, disconnect all
power sources and allow at least 30
minutes for capacitors to discharge.
•All electrical enclosures—unit or
remote—are IP2X.
5. Apply power to the chiller control panel to verify the
Flow Control Monitor has power and the Low Volt
Broken Wire Relay light is NOT lit.
6. Remove all air from the piping circuit prior to
adjusting the low water flow setpoint.
7. Reduce the water flow to the minimum allowable
flow and adjust the Flow setting on the Flow
Control Monitor (see item labeled “7” in the
following figure). Adjusting the “Flow”
potentiometer clockwise (+) reduces the flow
setting cutout and adjusting counterclockwise (-)
increases the flow setting cutout.
NNoottee:: The “Temp” potentiometer on the ifm
efector
®
control module has no effect in
Trane application. It is NOT necessary to
make adjustments to the “Temp”
potentiometer.
8. After the cutout setting is adjusted, the cutout
setpoint will be indicated with a yellow light on the
Flow Control Monitor LED bar graph display. When
the water flows are higher than the cutout, a green
light will indicate proper flow status. If the flows fall
below the cutout setpoint, a red light will indicate
Evaporator and condenser proof of flow switches are
required. These switches are used with control logic to
confirm flow prior to starting a unit and to stop a
running unit if flow is lost. For troubleshooting, a
viewable diagnostic is generated if a proof of flow
switch does not close when flow is required.
Evaporator and Condenser
Water Piping
The following two figures illustrate the recommended
(typical) water piping arrangements for the evaporator
and condenser.
30
CVHH-SVX001G-EN
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