Trane WCVS 270 Owner's manual

Installation
Operation
Maintenance
Self Contained
Water Cooled
Air Conditioners
WCVS-SVX01A-EN
(Aug 2012)
Models
WCVS 270, WCVS 330, WCVS 400, WCVS 470,
WCVS 530, WCVS 600, WCVS 660, WCVS 730,
WCVS 800, WCVS 900, WCVS 12H.
TRANE R

TRANE ®
Foreword
These instructions do not attempt to
cover all variations in system, nor to
provide for every possible contingency
to be met in connection with installation.
Should further information be desired
or should particular problems arise
which are not sufficiently covered for the
purchaser’s purpose, the matter
should be referred to the manufacturer.
Warranty
Warranty is based on the general terms
and conditions of Trane-Ingersoll
Rand. The warranty is void if the
equipment is repaired or modified
without the written approval of the
manufacturer, if the operating limits are
exceeded or if the control system or
the electrical wiring is modified.
Damage due to misuse, lack of
maintenance or failure to comply with
the manufacturer’s instructions or
recommendations is not covered by the
warranty obligation.
Reception
On arrival, inspect the unit before
signing the delivery note. Specify any
damage on the delivery note, and send
a registered letter of protest to the last
carrier of the goods within 72 hours of
delivery. Notify the local Trane Sales
Office at the same time.
The unit should be totally inspected
within 15 days of delivery. If any
concealed damage is discovered, stop
unpacking the shipment.
Take photos of the damage material if
possible. Notify the carrier immediately
by phone and registered mail. Notify
the local Trane Sales Office.
Concealed damage must be reported
within 15 days of delivery.
Check the unit nameplate to confirm
that the proper unit was shipped.
Available power supply must be
compatible with electrical characteristics
specified on component nameplates.
General Information
This manual covers the installation,
operation and maintenance of the Trane
WCVS.
Note:
“Warnings”and “Cautions”appear at
appropriate places in this manual. Your
personal safety and the proper
operation of this machine require that
you follow them carefully. The
manufacturer assumes no liability for
installations or servicing performed by
unqualified personnel.
Handling
The unit will be supplied with a
shipping base and protective
packaging over the unit casing. The
packaging should be kept on the unit
during handling or storage on site.
lf it is necessary to remove the packaging
for inspection prior to completion of on
site handling, retain packaging parts
and reapply them by tapping in position
Performance Data
to prevent damage to the casing. The
unit as supplied has a shipping base
which is suitable for handling by a fork
lift truck. If it is necessary to sling the
unit, use spreader bars under the
shipping base. Ensure that ropes do
not cause abrasion to the surface of
the unit.
(i)

TRANE ®
Contents
(ii)
WCVS Model Nomenclature
General Specification
General Information
Installation
Operation / Start-up
Coil / Condenser Cleaning
Trouble Analysis Guide
Electrical Data
Electrical Wiring
Unit Dimensions
Wiring Diagram
Schematic Wiring Diagram
1
2
3
4-6
7-10
11
12
13
14
15-19
20
21-25

TRANE ®
WCVS Model Nomenclature
1
W C V S 2 7 0 D 1 C X I A 0 D
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Water Cooled / Self contained / Vertical
Development Sequence
Unit Size
270 600
330 660
400 730
470 800
530 900
12H
Electrical Rating / Utilization Range
D = 380 - 415V / 3 Phase / 50 Hz
Factory Mounted Control
1 = DOL(4w) STR with Unitary Controller, UC2c / UC4C.
2 = Soft Starter with Unitary Controller, UC2c / UC4c. (Consult Factory)
Minor Design Sequence
C = Double Wall PU Panels - Standard on all models & Introduction of FUJI Starter
Factory Installed Options
X = None
Installed Motor kW
Refrigerent Type
A = R22
B = R407c
Future Use
Service Indicator
D = Introduction of Externally Manifolded Condenser on WCVS 600-800.
DIGIT 1,2,3
DIGIT 4
DIGIT 5,6,7
DIGIT 8
DIGIT 9
DIGIT 10
DIGIT 11
DIGIT 12
DIGIT 13
DIGIT 14
DIGIT 15
W C V
S
2 7 0
WCVS Models
WCVS 270
WCVS 330
WCVS 400 / 470 / 530
WCVS 600 / 660
WCVS 730 / 800
WCVS 900
WVCS 12H
STD.MTR, Kw
I = 3.7
I = 3.7
K = 5.5
L = 7.5
M = 11
N = 15
P = 22
O/Size MTR, Kw
K = 5.5
L = 7.5
M = 11
N = 15
N = 15
O = 18.5
NA
D
1
C
X
I
A
0
D

TRANE ®
General Specification
WCVS 270-12H
2

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3

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General Information
4
General information
The multiple-compressor WCVS units
consist of compressors, water-cooled
condensers, an evaporator coil, and FC
fan. Each unit is shipped with refrigerant
and oil charge with complete refrigerant
piping. Each refrigerant circuit includes
a brazed filter-drier, condenser pressure
relief valve, sightglass, high and low
pressure access ports, thermal
expansion valve with external
equalizer, lock-out safety and thermal
overloads for each compressor, time
delay safety and high-low pressure
cut-out switches.
The evaporator fan is of double-width
double inlet forward curved fan.
Rigging
Before preparing the unit or
component for lifting, estimate the
approximate centre of gravity for lifting
safety. Due to the placement of internal
components, the unit weights may be
unevenly distributed. Unit weights are
provided in the general specification.
WARNING: To prevent injury or
death and unit damage, observe
handling cautions and procedures
given in Figure 1 when lifting the unit.
Always test-lift the unit to determine
actual centre of gravity.
Special Note on Refrigeration
Emissions
World environmental scientists have
concluded, based on the best
currently available evidence, that
ozone in our upper atmosphere is
being reduced due to release of CFC
fully halogenated compounds.
Trane-Ingersoll Rand urges all
HVAC servicers working on Trane
equipment, or any manufacturer’s
products, make every effort to
eliminate, if possible, or vigorously
reduce the emission of CFC, HCFC,
and HFC refrigerants to the
atmosphere resulting from
installation, operation, routine
maintenance, or major service on
this equipment. Always act in a
responsible manner to conserve
refrigerants for continued use even
when acceptable alternatives are
available.

TRANE ®
Installation
5
Installation
For proper installation, consider the
following:
Unit nameplate
The unit nameplate gives the full model
reference. The operating voltage must
be as specified and must not vary by
more than 6%.
Foundation
Ensure the floor to foundation of the
unit is level, solid and of sufficient
strength to support the unit weight.
Level the floor if necessary before
placing the unit. Please refer to
(General Specification) for information
on weights.
Clearances
Provide sufficient clearance around the
unit. Please refer to the section on
dimensions for recommended service
are required. The service envelope
shown is the minimum required for
general maintenance of fans and
refrigerant components. The
minimum room required to remove
fans, fan motor, compressors and
condensers was considered.
However, the service envelopes
provided do not include space required
for change of shaft or removal of coils
or local electrical codes.
Piping
The installer must furnish and install a
condenser main and standby water
pump, cooling tower, pressure gauges,
strainers and all components for
waterside piping. All field installed
piping must conform to applicable local
codes. Recommended piping
components is provided in figure 2, to
ensure proper, clean and serviceable
supply.
Air Filters
Please refer to unit dimension al data
for information on filter layout.
Condensate drain
connections
Connect drain piping to a 1-1/4 inch
fitting. Piping should be no smaller than
7/8 inch-OD copper or ¾ inch iron pipe.
Pitch the line away from the drain pan
and install a P-trap.
Vibration Isolation
All units will be shipped with rubber-
in-shear isolators at the base which
holds the compressors. For further
vibration and acoustic isolation, it is
recommended to install neoprene
rubber padding along the perimeter of
the unit base.
Refrigerant Circuit
Single manifolded circuit on WCVS
270,WCVS 330 and WCVS 400.
Two manifolded circuits on WCVS 470-
800.
Manifolded circuits will have two
compressors manifolded.
Figure 3 shows a typical manifolded
circuit for WCVS.
Note: Unit has no floor drainpan.
(Secondary drainpan)
Figure 2-Condenser Water Piping Components
for Cooling Tower System.

TRANE ®
Installation - Condenser
Water Pressure Drop Data
6
WCVS 270 / 330 / 400
WCVS 470 / 530
Condenser 25 T, Pressure Drop Vs GPM
1.3
2.3
3.3
4.3
5.3
6.3
7.3
8.3
9.3
10.3
11.3
35 45 55 65 75 85 95 105
GPM
Water Pressure Drop (Ft H20)
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Water Pressure Drop (Psi)
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:&96
:&96
Condenser 35 T, Pressure Drop Vs GPM
2.31
3.31
4.31
5.31
6.31
7.31
8.31
9.31
10.31
11.31
12.31
13.31
14.31
15.31
16.31
17.31
18.31
19.31
20.31
21.31
22.31
65.0 75.0 85.0 95.0 105.0 115.0 125.0
GPM
Water Pressure Drop (Ft H20)
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
Water Pressure Drop (Psi)
:&96
:&96