Trane City RTSF050, City RTSF060, City RTSF070, City RTSF090, City RTSF100 Installation Operation & Maintenance

Installation
Operation
Maintenance

Water-cooled Liquid Chillers
with Helical Rotary Compressors

RTSF: 180-385kW (R1234ze)

RLC-SVX023A

Contents

Introduction .......................................................................................................3

Unit model number description ....................................................................... 5

General Data ......................................................................................................7

Unit Description ................................................................................................. 8

Installation - Mechanical ................................................................................. 10

Installation - Electrical ..................................................................................... 21

Operating Principles Mechanical ....................................................................27

Typical Operating map ....................................................................................33

Controls/Tracer TD7 Operator Interface ......................................................... 34

Pre-Start Checkout ..........................................................................................35

Unit Start-up .................................................................................................... 37

Periodic Maintenance ...................................................................................... 38

Maintenance Procedures ................................................................................41

Recommended service routine frequencies .................................................. 46

Additional services .......................................................................................... 47

2 © Trane 2019

RLC-SVX023A

Introduction

Foreword

These instructions are given as a guide to good practice
in the installation, start-up, operation, and maintenance
by the user, of Trane City chiller RTSF, manufactured in
France. A separate manual is available for the use and
maintenance of the unit’s control, Tracer™ UC800. They
do not contain full service procedures necessary for the
continued successful operation of this equipment. The
services of a qualified technician should be employed
through the medium of a maintenance contract with a
reputable service company. Read this manual thoroughly
before unit start-up.
Units are assembled, pressure tested, dehydrated,
charged and tested in accordance with factory standard
before shipment.

Warnings and Cautions

Warnings and Cautions appear at appropriate sections
throughout this manual. Your personal safety and the
proper operation of this machine require that you follow
them carefully. The constructor assumes no liability
for installations or servicing performed by unqualified
personnel.

WARNING: Indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury.

CAUTION: Indicates a potentially hazardous situation
which, if not avoided, may result in minor or moderate
injury. It may also be used to alert against unsafe
practices or for equipment or property-damage-only
accidents.

Safety Recommendations

To avoid death, injury, equipment or property damage,
the following recommendations should be observed
during maintenance and service visits:

1. The maximum allowable pressures for system leak
testing on low and high pressure side are given in
the chapter “Installation”. Insure to do not exceed test
pressure by using appropriate device.

2. Disconnect all power supplies before any servicing on
the unit.

3. Service work on the refrigeration system and the
electrical system should be carried out only by qualified
and experienced personnel.

4. To avoid any risk, it is recommended to place the unit
on an area with restricted access.

Reception

On arrival, inspect the unit before signing the delivery
note. Specify any visible damage on the delivery note,
and send a registered letter of protest to the last carrier
of the goods within 7 days of delivery.

Notify the local TRANE sales office at the same
time. The delivery note must be clearly signed and
countersigned by the driver.

Any concealed damage shall be notified by a registered
letter of protest to the last carrier of the goods within
7 days of delivery. Notify the local TRANE sales office
at the same time.

Important notice: No shipping claims will be accepted
by TRANE if the above mentioned procedure is not
respected.

For more information, refer to the general sales
conditions of your local TRANE sales office.

Note: Unit inspection in France. Delay to send registered
letter in case of visible and concealed damage is only
72 hours.

Loose Parts Inventory

Check all the accessories and loose parts that are
shipped with the unit against the shipping list. Included
in these items will be the Water Flow Switch (optional),
rigging and electrical diagrams, service literature, which
are placed inside the control panel and/or starter panel
for shipment.
If optional elastomeric isolators are ordered with
the unit they are shipped mounted on the horizontal
support frame of the chiller. The isolators’ location and
distribution weight diagram is placed with the service
literature inside the starter/control panel.

Warranty

Warranty is based on the general terms and conditions
of the manufacturer. 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. If the user does not conform to the rules of
this manual, it may entail cancellation of warranty and
liabilities by the manufacturer.

RLC-SVX023A

3

Introduction

Unit Description

The RTSF units are helical-rotary type, water-cooled,
liquid chillers, designed for installation indoors.
The RTSF units are packaged with an evaporator
and condenser.

Note: Each RTSF unit is a completely assembled,
hermetic package that is factory-piped, wired, leak
tested, dehydrated, charged and tested for proper control
operations prior to shipment. The chilled water inlet and
outlet openings are covered for shipment.

The RTSF series features Trane’s exclusive Adaptive
Control logic with UC800 controls. It monitors the control
variables that govern the operation of the chiller unit.
Adaptive Control logic can correct these variables, when
necessary, to optimize operational efficiencies, avoid
chiller shutdown, and keep producing chilled water.

Compressor loading/unloading is provided by AFD
(Adaptive Frequency Drive) coordinated with slide
valve operation.

Each refrigerant circuit is provided with filter, sight glass,
electronic expansion valve, and charging valves on
the RTSF.

The evaporator and condenser are manufactured
in accordance with Pressure Equipment Directive
standards. The evaporator and the condenser are
insulated according the option ordered. Both evaporator
and condenser water pipes are equipped with water
drain and vent connections.

Maintenance contract

It is strongly recommended that you sign a maintenance
contract with your local Trane Service Agency. This
contract provides regular maintenance of your
installation by a specialist in our equipment. Regular
maintenance ensures that any malfunction is detected
and corrected in good time and minimizes the possibility
that serious damage will occur. Finally, regular
maintenance ensures the maximum operating life of
your equipment. We would remind you that failure to
respect these installation and maintenance instructions
may result in immediate cancellation of the warranty.

Training

To assist you in obtaining the best use of it and
maintaining it in perfect operating condition over a long
period of time, the manufacturer has at your disposal
a refrigeration and air conditioning service school. The
principal aim of this is to give operators and technicians
a better knowledge of the equipment they are using,
or that is under their charge. Emphasis is particularly
given to the importance of periodic checks on the
unit operating parameters as well as on preventive
maintenance, which reduces the cost of owning the unit
by avoiding serious and costly breakdown.

Refrigerant

Consult the addendum to Manuals for units with
refrigerant, for conformity to the Pressure Equipment
Directive (PED) 97/23/EC or 2014/68/EU and Machinery
Directive 2006/42/EC and for specific caution for R1234ze.

4

RLC-SVX023A

Unit model number description

Digit 1, 2, 3, 4 – Unit Model

RTSF

Digit 5, 6, 7 – Unit size

50 = 50 Nominal tons
60 = 60 Nominal tons
70 = 70 Nominal tons
90 = 90 Nominal tons
100 = 100 Nominal tons
110 = 110 Nominal tons

Digit 8 – Unit Power supply

D = 400 V – 50 Hz – 3Ph

Digit 9 – Factory

E = Europe
F = ICS

Digit 10 & 11 – Design sequence

(Factory assigned)

Digit 12 & 13 – Not used

Digit 14 – Agency listing

C = CE marking

Digit 15 – Pressure Vessel Code

2 = PED (Pressure Equipment Directive)

Digit 16 – Unit Application

X = Cooling Mode - Below 50°C Leaving Condenser Temp
H = Cooling Mode - Above 50°C Leaving Condenser Temp
L = Heat pump - Below 50°C Leaving Condenser Temp
M = Heat pump - Above 50°C Leaving Condenser Temp

Digit 27 – Not Used

Digit 28 – Evaporator pump

X = Without

Digit 29 – Condenser Size

A = Condenser A
B = Condenser B
C = Condenser C
D = Condenser D

Digit 30 & 31 – Not Used

Digit 32 – Condenser Pump

X = Without

Digit 33 – Condenser Water side pressure

X = 10 Bar Condenser Water Pressure

Digit 34 – Condenser Thermal Insulation

X = Without
H = With Condenser Insulation

Digit 35 – Oil cooler

X = Without
C = With

Digit 36 – Evaporator Pump Smart Flow control

X = Without
E = VPF Constant Delta T Evaporator

Digit 37 – Power Protection

F = Disconnect switch with fuses
B = Disconnect switch with circuit breakers

Digit 17 – Refrigerant

Z = R1234ze unit with Factory charge (with oil)
Y = R1234ze with pre-charge (with oil)
L = R1234ze unit with Nitrogen (no oil)

Digit 18 – Sound Attenuation Package

X = Without
A = Aesthetic option
L = Sound attenuation package

Digit 19 – Relief Valve Option

L = Single Relief Valve Condenser
2 = Single Relief Valve Condenser & Evaporator
D = Dual relief valve with 3 way valve condenser
4 = Dual relief valve with 3 way valve condenser & Evaporator

Digit 20 – Compressor Type

L = CHHP Low VI
H = CHHP or CHHW High VI

Digit 21 – Evaporator Size

A = Evaporator A
B = Evaporator B
C = Evaporator C
D = Evaporator D

Digit 22 & 23 & 24 – Not Used

Digit 25 – Evaporator Water side Pressure

X = 10 Bar Evaporator Water Pressure

Digit 26 – Evaporator application

N = Comfort Cooling (above 5°C)
P = Process Cooling below 5°C
C = Ice Making (from -7°C to 20°C)

Digit 38 – Not Used

Digit 39 – Relay Card

1 = With additional relay card

Digit 40 – Smart com protocol

X = Without
B = BACnet MSTP interface
C = BACnet IP interface
M = Modbus RTU interface
L = LonTalk interface

Digit 41 – Communication customer input/output

X = Without
A = External Set points & Capacity outputs – Voltage Signal
B = External Set points & Capacity outputs – Current Signal

Digit 42 – Outdoor Air Temperature Sensor

X = Without
A = Outdoor Air Temperature Sensor – CWR/Low Ambient

Digit 43 – Not Used

Digit 44 – Master Slave Set

X = Without
M = With

RLC-SVX023A

5

Unit model number description

Digit 45 – Energy meter

X = Without
M = With

Digit 46 – Condenser Pump Smart Flow Control/Other Condenser
Pressure Control Outputs

X = Without
1 = Condenser Pressure in % HPC
2 = Differential Pressure
3 = Condenser Head Pressure Flow Control
4 = VPF Constant Delta T Condenser Flow Control

Digit 47 – Power socket

X = Without
P = Included (230V-100W)

Digit 48 – Factory test

X = Without
B = Visual Inspection
E = Test E - 1 point with Report Non Witnessed
S = Special test

Digit 49 – Installation Accessory

X = Without
1 = Neoprene isolators
4 = Neoprene pads

Digit 50 – Connection Accessory

X = Grooved pipe connection
W = Grooved pipe with coupling and pipe stub

Digit 51 – Flow switch

X = Without
A = Evaporator or Condenser
B = Evaporator and Condenser

Digit 52 – Literature Language

C = Spanish
D = German
E = English
F = French
H = Dutch
I = Italian
M = Swedish
P = Polish
R = Russian
T = Czech
V = Portugese
6 = Hungarian
8 = Turkish

Digit 53 – Not Used

Digit 54 – EXV selection

X = Standard EXV

Digit 55 – AFD Selection

A = AFD A
B = AFD B
C = AFD C
D = AFD D
E = AFD E
F = AFD F

Digit 56 – Design special

X = Without
S = Special

6

RLC-SVX023A

General Data

Table 1 – General Data RTSF Standard efficiency - R1234ze

Indicative performances (1)

Cooling Capacity (1) (kW) 183 220 264 314 363 388
Total Power input in cooling (1) (kW) 37 43 53 64 80 90

Unit Electrical data (2) (5)

Low VI compressor - digit 20 =L

Maximum Power Input (kW) 66 77 91 111 130 ­Unit rated amps (2) (A) 100 117 138 168 196 ­Unit start up amps (2) (A) 100 117 138 168 196 ­Displacement power factor 0.95 0.95 0.95 0.95 0.95 -

High VI compressor - Digit 20 = H

Maximum Power Input (kW) 87 103 125 150 178 178
Unit rated amps (2) (A) 131 155 190 227 270 270
Unit start up amps (2) (A) 131 155 190 227 270 270
Displacement power factor 0.95 0.95 0.95 0.95 0.95 0.95
Short Circuit Unit Capacity (kA) 35 35 35 35 35 35
Max Power cable (cross) mm² 1x 240 1x 240 1x 240 1x 240 1x 240 1x 240
Disconnect switch size (3) (A) 400 400 400 400 400 400

Compressor

Type Screw Screw Screw Screw Screw Screw
Model 60 70 85 100 120 140

Low VI compressor - digit 20 =L

Max compressors Power Input (kW) 65 76 91 110 129 ­Max Amps (3) (6) (A) 98 115 136 166 194 ­Start up Amps (A) 98 115 136 166 194 -

High VI compressor - Digit 20 = H

Max compressors Power Input (kW) 86 102 124 149 177 177
Max Amps (3) (6) (A) 129 153 188 225 268 268
Start up Amps (A) 129 153 188 225 268 268
Motor RPM (rpm)
Oil sump heater (kW) 0.275 0.275 0.275 0.275 0.275 0.275

Evaporator

Type BPHE BPHE BPHE BPHE BPHE BPHE
Evaporator model C B B A A A
Evaporator Water Content volume (l) 52 59 69 92 92 92

Evap. Water Flow rate - Minimum (4) (l/s) 3.6 4.8 4.8 6.4 6.4 6.4
Evap. Water Flow rate - Maximum (4) (l/s) 38.6 38.6 38.6 38.6 38.6 38.6
Nominal water connection size (Grooved coupling) (in) - (mm) 4" 4" 4" 4" 4" 4"

Condenser

Type BPHE BPHE BPHE BPHE BPHE BPHE
Condenser model B B A A A A
Condenser Water Content volume (l) 49 49 69 69 69 69

Cond. Water Flow rate - Minimum (4) 1.9 1.9 2.7 2.7 2.7 2.7
Cond. Water Flow rate - Maximum (4) 39 39 39 39 39 39
Nominal water connection size (Grooved coupling) (l) 4” 4” 4” 4” 4” 4”

Dimensions

Unit Length (mm) 2334 2334 2334 2334 2334 2334
Unit Width (mm) 922 922 922 922 922 922
Unit Height (mm) 1941 1941 1959 1959 1959 1959

Weights

Shipping Weight (5) (kg) 1611 1675 1900 1986 1986 1986
Operating Weight (5) (kg) 1690 1771 2018 2127 2127 2127

System data (6)

Nb of refrigerant circuits # 1 1 1 1 1 1
Minimum cooling load % % 25% 25% 25% 25% 25% 25%

Standard unit

R1234ze refrigerant charge (6) (kg) 31 34 42 47 47 47
Oil charge (6) (l) 5 5 7 7 7 7
POE Oil type OIL0066E/OIL0067E

RTSF050 RTSF060 RTSF070 RTSF090 RTSF100 RTSF110

(1) Indicative performance at Evaporator water temperature: 12°C / 7°C - Condenser water temperature 30 / 35°C - for detailed performances consult

order write up.
(2) Under 400V/3/50Hz.
(3) Option fuse + disconnect switch.
(4) Height reaches 2050 mm with the sound attenuation package option.
(5) Additional weight of + 158kg in case of a sound attenuation package option.
(6) Electrical & system data are indicative and subject to change without notice. Please refer to unit nameplate data.

RLC-SVX023A

7

Unit Description

Component location for typical RTSF Unit

16

13

2

5

17

18

15

14

2 = Power cable gland plate

for customer wiring
4 = Suction line
5 = Oil separator
6 = Condenser water outlet
7 = Condenser water inlet

4

5

9

8 = Evaporator water outlet
9 = Evaporator water inlet
13 = External control wiring

cable gland plate for

customer wiring
14 = Compressor
15 = Discharge line
16 = Unit nameplate (on the

side of starter/control

panel)
17 = EXV
18 = Condenser

1 = Control panel
3 = Tracer TD7 interface
4 = Suction line
10 = Auxiliary Oil Cooler (Optional)
11 = Evaporator
12 = Adaptive Frequency Drive

8

6

4

10

11 12

7

3

1

8

RLC-SVX023A

Unit Description

Installation overview and
requirements

Contractor responsibilities

A list of the contractor responsibilites typically associated
with the installation process is provided in Table 2.

• Locate and maintain the loose parts. Loose parts are
located in the control panel.

• Install the unit on a foundation with flat support surfaces,
level within 5 mm and of sufficient strength to support
concentrated loading. Place the manufacturer-supplied
isolation pad assemblies under the unit.

• Install the unit per the instructions outlined in the
“Mechanical Installation” section.

• Complete all water piping and electrical connections.

Note: Field piping must be arranged and supported to
avoid stress on the equipment. It is strongly recommended
that the piping contractor provide at least 1m of clearance
between the pre-installation piping and the planned location
of the unit. This will allow for proper fit-up upon arrival
of the unit at the installation site. All necessary piping
adjustments can be made at that time

• Where specified, supply and install valves in the water

piping upstream and downstream of the evaporator and
condenser, to isolate the heat exchangers for maintenance
and to balance/trim the system.

• Supply and install flow switches or equivalent devices
in both the chilled water and condenser water piping.
Interlock each switch with the proper pump starter and
Tracer UC800, to ensure that the unit can only operate
when water flow is established.

• Supply and install taps for thermometers and pressure
gauges in the water piping, adjacent to the inlet and outlet
connections of both the evaporator and the condenser.

• Where specified, supply and install strainers ahead of all

pumps and automatic modulating valves.

• Supply and install refrigerant pressure relief piping from
the pressure relief to the atmosphere.

• Start the unit under supervision of a qualified service
technician.

• Where specified, supply and insulate the evaporator

and any other portion of the unit, as required, to prevent
sweating under normal operating conditions.

• For unit-mounted starters, cutouts are provided at the top
of the panel for line-side wiring.

• Supply and install the wire terminal lugs to the starter.

• Supply and install field wiring to the line-side lugs of the
starter.

Table 2 – Installation Responsibility

Requirement

Foundation Meet foundation requirements

Rigging Safety chains

Isolation Isolation pads Other type of isolators

Electrical - Circuit breakers or fusible

Water piping Flow switches (may be eld

Insulation Insulation Insulation

Water piping connection
components

Caution on exposure to
refrigerant

Trane supplied
Trane installed

disconnects (Optional)

- Unit mounted starter

- Wye Delta starter or AFD
(Adaptive Frequency Drive)

- Grooved pipe

- Grooved pipe to agged

connection (optional)

Trane supplied
Field installed

- Flow switches (may be eld

supplied)

- Harmonic lters (on request

according to customer electrical
network and equipment)

supplied)

Customer supplied
Customer installed

Clevis connectors
Lifting beams

- Circuit breakers or fusible disconnect

- Electrical connections to unit mounted
starter (optional)

- Electrical connections to remote
mounted starter (optional)

- Wiring sizes per submittal and local
regulations

- Terminal lugs

- Ground connections

- BAS wiring (optional)

- Control voltage wiring

- Chilled water pump contactor and
wiring including interlock

- Option relays and wiring

- Taps for thermometers and gauges

- Thermometers

- Strainers (as required)

- Water ow pressure gauges

- Isolation and balancing valves in water
piping

- Vents and drain on waterbox valves

- Pressure relief valves for water side

Respect recommendation of IOM
addendum

RLC-SVX023A

9

Installation - Mechanical

Storage

If the chiller is to be stored more than one month prior to
installation, observe the following precautions:

• Do not remove the protective coverings from the
electrical panel.

• Store the chiller in a dry, vibration-free, secure area.

• At least every three months, attach a gauge and

manually check the pressure in the refrigerant circuit.
If the refrigerant pressure is below 3.4 bar at 21°C (2 bar
at 10 °C), call a qualified service organization and the
appropriate Trane sales office.

NOTE: Pressure will be approximately 1.0 bar if shipped
with the optional nitrogen charge.

Noise Considerations

• Refer to Engineering Bulletin for sound consideration

applications.

• Locate the unit away from sound-sensitive areas.

• Install the isolation pads under the unit. Refer to “Unit

Isolation.”

• Install rubber vibration isolators in all water piping.

• Use flexible electrical conduit for final connection to the

Tracer UC800.

• Seal all wall penetrations.

NOTE: Consult an acoustical engineer for critical
applications.

Foundation

Provide rigid, non-warping mounting pads or a concrete
foundation of sufficient strength and mass to support the
chiller operating weight (including completed piping and
full operating charges of refrigerant, oil and water).

Refer to General information for unit operating weights.

Once in place, level the chiller within 5 mm over its
length and width.

The manufacturer is not responsible for equipment
problems resulting from an improperly designed or
constructed foundation.

Clearances

Provide enough space around the unit to allow the
installation and maintenance personnel unrestricted
access to all service points. A minimum of 1 m is
recommended for compressor service and to provide
sufficient clearance for the opening of control panel
doors. In all cases, local codes will take precedence
over these recommendations. If the room configuration
requires a variance to the clearance dimensions, contact
your sales representative.

NOTE: Required vertical clearance above the unit is at
least 1 m. There should be no piping or conduit located
over the compressor motor.

NOTE: Maximum clearances are given. Depending on
the unit configuration, some units may require less
clearance than others in the same category.

Ventilation

The unit produces heat even though the compressor is
cooled by the refrigerant. Make provisions to remove
heat generated by unit operation from the equipment
room. Ventilation must be adequate to maintain an
ambient temperature lower than 40°C. Vent the pressure
relief valves in accordance with all local and national
codes. Refer to “Pressure Relief Valves”. Make provisions
in the equipment room to keep the chiller from being
exposed to ambient temperatures below 10°C.

Water Drainage

Locate the unit near a large capacity drain for water
vessel drain-down during shutdown or repair. Condenser
and evaporator water pipes are provided with drain
connections. Refer to “Water Piping.” All local and
national codes apply.

Access Restrictions

Refer to the unit submittals for specific dimensional
information (documents supplied in document package
coming with unit).

Vibration Eliminators

• Provide rubber boot type isolators for all water piping

at the unit.

• Provide flexible conduit for electrical connections to the

unit.

• Isolate all pipe hangers and be sure they are not

supported by main structure beams that could
introduce vibration into occupied spaces.

• Make sure that the piping does not put additional stress

on the unit.

NOTE: Do not use metal braided type eliminators on the
water piping. Metal braided eliminators are not effective
at the frequencies at which the unit will operate.

10

RLC-SVX023A

Handling Procedure

INSTRUCTIONS DE LEVAGE ET DE MANUTENTION
IL EST RECOMMANDE D'UTILISER LES ORGANES DE LEVAGE ET DE MANUTENTION
MONTRES PAR LE SCHEMA ET DE SUIVRE LES INSTRUCTIONS SUIVANTES :

1 -ATTENTION : CETTE UNITE DOIT ETRE LEVEE ET MANUTENTIONNEE AVEC
PRECAUTIONS. EVITER LES A-COUPS LORS DU LEVAGE ET DE LA MANUTENTION.

ANWEISUNGEN FUER DEN TRANSPORT MIT HEBEZEUG
ES WIRD EMPFOHLEN, DIE MASCHINE ENTSPRECHEND DER ZEICHNUNG MIT EINEM
KRAN ANZUHEBEN UND DIE FOLGENDEN ANWEISUNGEN ZU BEACHTEN :

1 -BEIM ANHEBEN VORSICHTIG VORGEHEN, STOESSE UND ERSCHUETTERUNGEN
UNBEDINGT VERMEIDEN.

SPECIAL LIFTING AND MOVING INSTRUCTIONS
IT IS RECOMMENDED TO USE THE SPECIAL BUILT-IN RIGGING POINTS SHOWN
IN THE DIAGRAM AND TO FOLLOW THE FOLLOWING INSTRUCTIONS :

1 -CAUTION : THIS UNIT MUST BE LIFTED AND HANDLED WITH CARE. AVOID SHOCKS
WHILE HANDLING.

ISTRUZIONI PER IL SOLLEVAMENTO E LA MOVIMENTAZIONE DELL'UNITA
SI RACCOMANDA DI SEGUIRE LE ISTRUZIONI QUI RIPORTATE PER IL SOLLEVAMENTO
E LA MOVIMENTAZIONE DELL'UNITA :

1 -ATTENZIONE : EFFETTUARE IL SOLLEVAMENTO DELL'UNITA CON LA MASSIMA CURA
EVITARE CARICHI ECCESSIVI, SOLLEVARE LENTAMENTE E UNIFORMEMENTE.

HIJS EN TRANSPORT INSTRUCTIES
DE TOE TE PASSEN HIJSMETHODE IS ALS VOLGT VOORGESCHREVEN :

1 -WAARSCHUWING : DEZE MACHINE VOORZICHTIG VERPLAATSEN. VOORKOM
SCHOKKEN EN STOTEN BIJ HET HIJSEN.

INSTRUCCIONES DE TRANSPORTE Y DESCARGA
SE RECOMIENDA SEGUIR LAS INSTRUCCIONES SIGUIENTES PARA LA CARGA Y
DESCARGA DE LA UNIDAD :

1 -ATENCION : ESTA UNIDAD DEBE SER DESCARGADA CON EL MAYOR CUIDADO
PARA EVITAR CHOQUES. DESCARGAR DESPACIO Y CUIDADOSAMENTE.

B

RTSF

050-060-070-090-100-110

57384397

Sheet 1 of 2

Date: Revision: B

19-DEC-2018

INSTRUCTIONS DE LEVAGE ET DE MANUTENTION
IL EST RECOMMANDE D'UTILISER LES ORGANES DE LEVAGE ET DE MANUTENTION
MONTRES PAR LE SCHEMA ET DE SUIVRE LES INSTRUCTIONS SUIVANTES :

1 -ATTENTION : CETTE UNITE DOIT ETRE LEVEE ET MANUTENTIONNEE AVEC
PRECAUTIONS. EVITER LES A-COUPS LORS DU LEVAGE ET DE LA MANUTENTION.

ANWEISUNGEN FUER DEN TRANSPORT MIT HEBEZEUG
ES WIRD EMPFOHLEN, DIE MASCHINE ENTSPRECHEND DER ZEICHNUNG MIT EINEM
KRAN ANZUHEBEN UND DIE FOLGENDEN ANWEISUNGEN ZU BEACHTEN :

1 -BEIM ANHEBEN VORSICHTIG VORGEHEN, STOESSE UND ERSCHUETTERUNGEN
UNBEDINGT VERMEIDEN.

SPECIAL LIFTING AND MOVING INSTRUCTIONS
IT IS RECOMMENDED TO USE THE SPECIAL BUILT-IN RIGGING POINTS SHOWN
IN THE DIAGRAM AND TO FOLLOW THE FOLLOWING INSTRUCTIONS :

1 -CAUTION : THIS UNIT MUST BE LIFTED AND HANDLED WITH CARE. AVOID SHOCKS
WHILE HANDLING.

ISTRUZIONI PER IL SOLLEVAMENTO E LA MOVIMENTAZIONE DELL'UNITA
SI RACCOMANDA DI SEGUIRE LE ISTRUZIONI QUI RIPORTATE PER IL SOLLEVAMENTO
E LA MOVIMENTAZIONE DELL'UNITA :

RELEASED 21/Dec/2018 09:34:29 GMT

Follow instructions given in the lifting and handling
document supplied with documentation package
shipped with the unit.

Figure 1 – Handling

YES NO

Installation - Mechanical

Isolation Pads

1. The elastomeric pads shipped (as standard) are
adequate for most installations. For additional details
on isolation practices, consult an acoustical engineer
for sensitive installations. It is possible that some
vibration frequencies can be transmitted into the
foundations. This depends on the building structure.
It is recommended for these situations to use neoprene
isolators instead of elastomeric pads.
Drawings to locate isolation pads are supplied with
unit document package.

2. During final positioning of the unit, place the isolation

pads as indicated in submittal drawings. Level
the unit.

Drawings to locate isolation pads are included with in
document package sent with the unit.

RLC-SVX023A

930

1042

11

Installation - Mechanical

Unit Leveling

NOTE: The electrical panel side of the unit is designated

as the “front” of the unit.

1. Check unit level end-to-end by placing a level on the
chiller structure (compressor frame for example).

2. Adjust to within 5 mm of level front-to-back.

Water Piping

Piping Connections

To prevent equipment damage, bypass the unit if using
an acidic flushing agent.

Make water piping connections to the evaporator
and condenser. Isolate and support piping to prevent
stress on the unit. Construct piping according to local
and national codes. Insulate and flush piping before
connecting to unit.

The chilled water connections to the evaporator are to be
grooved-pipe type connections. Do not attempt to weld
these connections. Refer to submittal for dimension of
tube stub for grooved connection. Refer to submittal for
dimension of tube stub for grooved connection.

To prevent damage to chilled water components, do not
allow evaporator pressure (maximum working pressure)
to exceed 10 bar.

Reversing Water Connections is prohibited

It is critical to keep the factory layout for water
connections. Therefore reversing water connections may
lead to functional disorder.

NOTE: Dimensions of tube stub for grooved connection
are included in submittal drawings.

Vents and Drains

Install pipe plugs in evaporator and condenser water
connections drain and vent connections before filling
the water systems. To drain water, remove vent and drain
plugs, install a NPT connector in the drain connection
and connect a hose to it.

Water Treatment

WARNING: Do not use untreated or improperly treated
water. Use of untreated or improperly treated water may
result in equipment damage.

The following disclamatory label is provided on
each unit:

The use of improperly treated or untreated water in this
equipment may result in scaling, erosion, corrosion,
algae or slime. The services of a qualified water
treatment specialist should be engaged to determine
what treatment, if any, is advisable. The warranty
specifically excludes liability for corrosion, erosion
or deterioration of the manufacturer’s equipment.
The manufacturer assumes no responsibilities for the
results of the use of untreated or improperly treated
water, or saline or brackish water.

12

RLC-SVX023A

Installation - Mechanical

Evaporator Piping Components

Note: Make sure all piping components are between the
shutoff valves, so that isolation can be accomplished
on both the condenser and the evaporator. “Piping
components” include all devices and controls used
to provide proper water system operation and unit
operating safety. These components and their general
locations are given below.

Entering Chilled Water Piping

• Air vents (to bleed air from system)

• Water pressure gauges with shutoff valves

• Pipe unions

• Vibration eliminators (rubber boots)

• Shutoff (isolation) valves

• Thermometers

• Clean out tees

• Pipe strainer

Leaving Chilled Water Piping

• Air vents (to bleed air from system)

• Water pressure gauges with shutoff valves

• Pipe unions

• Vibration eliminators (rubber boots)

• Shutoff (isolation) valves

• Thermometers

• Clean out tees

• Balancing valve

• Pressure relief valve

To prevent evaporator damage, do not exceed 10 bar
evaporator water pressure for standard units.

To prevent heat exchangers damage, install a strainer
in the evaporator water inlet piping.

Condenser Piping Components

“Piping components” include all devices and controls
used to provide proper water system operation and unit
operating safety. These components and their general
locations are given below.

Entering Condenser Water Piping

• Air vents (to bleed air from system)

• Water pressure gauges with shutoff valves

• Pipe unions

• Vibration eliminators (rubber boots)

• Shutoff (isolation) valves

• Thermometers

• Clean out tees

• Pipe strainer

• Flow switch

Leaving Condenser Water Piping

• Air vents (to bleed air from system)

• Water pressure gauges with shutoff valves

• Pipe unions

• Vibration eliminators (rubber boots)

• Shutoff (isolation) valve

• Thermometers

• Clean out tees

• Balancing valve

• Pressure relief valve

To prevent condenser damage, do not exceed 10 bar
water pressure for standard units.

To prevent heat exchangers damage, install a strainer in
condenser water inlet piping.

Water Pressure Gauges and
Thermometers

Install field-supplied thermometers and pressure gauges
(with manifolds, whenever practical). Locate pressure
gauges or taps in a straight run of pipe; avoid placement
near elbows, etc. Be sure to install the gauges at the
same elevation on each shell if the shells have opposite­end water connections.

RLC-SVX023A

13

Installation - Mechanical

Water Pressure Relief Valves

Install a pressure relief valve in both evaporator and
condenser water systems. Failure to do so could result
in Heat Exchanger damage.

When shutoff valves are installed on the water circuits,
the water temperature can increase and create a high
pressure in the water systems. Refer to applicable
regulation for relief valve installation guidelines.

Flow Sensing Devices

Use field-provided flow switches or differential pressure
switches with pump interlocks to sense system water
flow.

To provide chiller protection, install and wire flow
switches in series with the water pump interlocks, for
both chilled water and condenser water circuits (refer to
the “Installation Electrical” section). Specific connections
and schematic wiring diagrams are shipped with the
unit.

Flow switches must stop or prevent compressor
operation if either system water flow drops off
drastically. Follow the manufacturer’s recommendations
for selection and installation procedures. General
guidelines for flow switch installation are outlined below.

• Mount the switch upright, with a minimum of 5 pipe

diameters of straight, horizontal run on each side.

• Do not install close to elbows, orifices or valves.

Note: The arrow on the switch must point in the direction
of the water flow. To prevent switch fluttering, remove all
air from the water system.

Note: The Tracer UC800 provides a 6-second time delay
on the flow switch input before shutting down the unit
on a loss-of-flow diagnostic. Contact a qualified service
organization if nuisance machine shutdowns persist.
Adjust the switch to open when water flow falls below
nominal. Refer to the General Data table for minimum
flow recommendations. Flow switch contacts are closed
on proof of water flow.

Refrigerant Pressure Relief Valve
Venting

To prevent injury due to inhalation of refrigerant gas, do
not discharge refrigerant anywhere. If multiple chillers
are installed, each unit must have separate venting for
its relief valves. Consult local regulations for any special
relief line requirements.

All relief valve venting is the responsibility of the
installing contractor. All RTSF units use condenser
pressure relief valves that must be collected. Relief valve
connection sizes and locations are shown in the unit
submittals. Refer to national regulations for relief valve
vent line sizing information.

Do not exceed vent piping code specifications. Failure
to heed specifications could result in capacity reduction,
unit damage and/or relief valve damage.

Note: Once opened, relief valves tend to leak.

14

RLC-SVX023A

0.1

1

10

100

1000

1.0 10.0 100.0

Pressure Drop (kPa)

WaterFlow (L/s)

RTSF condensers Pressure drop on waterside

A

B

C

D

1

10

100

1000

1.0 10.0 100.0

Pressure Drop (kPa)

WaterFlow (L/s)

RTSF evaporators Pressure drop on waterside

A

B

C

D

Installation - Mechanical

RTSF condensers Pressure drop on waterside

RTSF evaporators Pressure drop on waterside

RLC-SVX023A

15

Installation - Mechanical

Freeze protection

For all chillers it is extremely important to keep full water
flow in the evaporator and condenser for an extended
time after last compressor stops. This will protect
evaporator tube from freezing by refrigerant migration.

This is why both evaporator and condenser water
pump output relay must be used to control the chilled
water pump. It is mandatory even if glycol is used with
protection down to lowest ambient expected.

For unit operation in a low temperature environment,
adequate protection measures must be taken against
freezing. Freeze protection can be accomplished by
adding sufficient glycol to protect against freezing below
the lowest ambient expected.

Important: Be sure to apply appropriate LERTC (Low
Evaporator Refrigerant Temperature Cutout) and LWTC
(Low Water Temperature Cutout) control setpoints based
on the concentration of the freeze inhibitor or solution
freeze point temperature.

Avoid the use of very low or near minimum chilled fluid
flow rates through the chiller. Higher velocity chilled fluid
flow reduces freeze risk in all situations. Flow rates below
published limits have increased freeze potential and have
not been considered by freeze protection algorithms.

• Avoid applications and situations that result in a
requirement for rapid cycling or repeated starting and
stopping of the chiller. Keep in mind that chiller control
algorithms may prevent a rapid compressor restart
after shutting down when the evaporator has been
operating near or below the LERTC limit.

• Maintain refrigerant charge at appropriate levels. If
charge is in question, contact Trane service. A reduced
or low level of charge can increase the likelihood of
freezing conditions in the evaporator and/or LERTC
diagnostic shutdowns.

16

RLC-SVX023A

Installation - Mechanical

RTSF Low Refrigerant temperature Ethylene Glycol and Propylene Glycol and Freeze protection settings.

Table 3 – Recommended low evaporator refrigerant temperature cutout (LERTC) and low water temperature cutout
(LWTC) for RTSF chillers

Ethylene Glycol Mono Propylene Glycol

Glycol
Percentage
(weight %)

0 0.0 0.0 2.8 0.0 0.0 2.8

2 -0.6 -1.4 2.2 -0.6 -1.4 2.2

4 -1.3 -2.1 1.5 -1.2 -2.0 1.6

5 -1.7 -2.5 1.1 -1.5 -2.3 1.3

6 -2.0 -2.9 0.7 -1.8 -2.6 1.0

8 -2.8 -3.6 0.0 -2.5 -3.3 0.3

10 -3.6 -4.5 -0.8 -3.1 -4.0 -0.4

12 -4.5 -5.3 -1.7 -3.8 -4.7 -1.1

14 -5.4 -6.2 -2.6 -4.6 -5.4 -1.8

15 -5.9 -6.7 -3.1 -5.0 -5.8 -2.2

16 -6.3 -7.2 -3.6 -5.4 -6.2 -2.6

18 -7.4 -8.2 -4.6 -6.2 -7.0 -3.4

20 -8.4 -9.3 -5.7 -7.1 -7.9 -4.3

22 -9.6 -10.4 -6.8 -8.0 -8.8 -5.2

24 -10.8 -11.6 -8.0 -9.0 -9.9 -6.3

25 -11.4 -12.3 -8.7 -9.6 -10.4 -6.8

26 -12.1 -12.9 -9.3 -10.1 -11.0 -7.4

28 -13.5 -14.3 -10.7 -11.3 -12.2 -8.5

30 -15.0 -15.8 -12.2 -12.6 -13.4 -9.8

32 -16.5 -17.3 -13.7 -14.0 -14.8 -11.2

34 -18.2 -19.0 -15.0 -15.5 -16.3 -12.7

35 -19.0 -19.9 -15.0 -16.3 -17.1 -13.5

36 -19.9 -20.6 -15.0 -17.1 -17.9 -14.3

38 -21.8 -20.6 -15.0 -18.8 -19.6 -15.0

40 -23.8 -20.6 -15.0 -20.7 -20.6 -15.0

42 -25.9 -20.6 -15.0 -22.6 -20.6 -15.0

44 -28.1 -20.6 -15.0 -24.8 -20.6 -15.0

45 -29.3 -20.6 -15.0 -25.9 -20.6 -15.0

46 -30.5 -20.6 -15.0 -27.1 -20.6 -15.0

48 -33.0 -20.6 -15.0 -29.5 -20.6 -15.0

50 -35.6 -20.6 -15.0 -32.1 -20.6 -15.0

Solution

Freeze

Point (°C)

Minimum

Recommended

LRTC

(°C)

Minimum

Recommended

LWTC

(°C)

Solution

Freeze

Point (°C)

Minimum

Recommended

LRTC

(°C)

Minimum

Recommended

LWTC

(°C)

CAUTION!

1. Additional glycol beyond the recommendations will adversely
affect unit performance. The unit efficiency will be reduced and the
saturated evaporator temperature will be reduced. For some operating
conditions this effect can be significant.

2. If additional glycol is used, then use the actual % glycol to establish the
low refrigerant cutout set point.

3. The minimum low refrigerant cutout set point allowed is - 20.6°C.
This minimum is established by the solubility limits of the oil in the
refrigerant.

RLC-SVX023A

4. With glycol application, ensure that there is no fluctuation of brine
flow versus Order Write Up value, as a reduction of flow will adversely
affect unit performance and behaviour.

5. Tables above should not be interpreted as suggesting operating ability
or performance characteristics at all tabulated glycol percentages.
Full unit simulation is required for proper prediction of unit
performance for specific operating conditions. For information on
specific conditions, contact Trane.

17

3

Installation - Mechanical

Condenser Water Temperatures

With the model RTSF chiller, a condenser water control
method is necessary only if the unit starts with entering
water temperatures below 13°C, or between 7°C and
13°C, when a temperature increase of 0.6°C per minute
to 13°C is not possible.

When the application requires startup temperatures
below the prescribed minimums, a variety of options are
available. To control a 2-way or 3-way valve, Trane offers
a Condenser Regulating Valve Control option for the
Tracer UC800 controls.

Condenser leaving water temperature must be 9°C
higher that evaporator leaving water temperature within
2 minutes after start-up. A minimum of 14°C differential
must be maintained afterwards.

The minimum acceptable refrigerant pressure differential
between condenser and evaporator is 1.7 Bar. The chiller
control system will attempt to obtain and maintain this
differential at startup, but for continuous operation
a design should maintain a 14°C differential from
evaporator leaving water temperature to condenser
leaving water temperature.

CAUTION! In case of low evaporator leaving water
temperature applications, the non use of glycol on the
condenser side may result in condenser plate freeze-up.

Condenser Water Regulation

The Condenser Head Pressure Control Option provides
for a 0-10VDC (maximum range -a smaller range is
adjustable) output interface to the customer’s condenser
water flow device. This option enables the Tracer UC800
controls to send a signal for opening and closing a
2-way or 3-way valve as necessary to maintain chiller
differential pressure.

Methods other than those shown can be employed to
achieve the same results. Contact your local Trane office
for details.

Contact the manufacturer of the cooling device for
compatibilty with variable water flow.

Throttling valve (Figure 2)

This method maintains condensing pressure and
temperature by throttling water flow leaving the
condenser in response to condenser pressure or system
differential pressures.

Advantages:

• Good control with proper valve sizing at relatively low
cost.

• Pumping cost can be reduced.

Disadvantages:

• Increased rate of fouling due to lower condenser water
velocity.

• Requires pumps that can accommodate variable flow.

Figure 2

1

CO

4

2B

7

CI

5A

6

CDS

4

EO

EVP

EI

18

RLC-SVX023A

Installation - Mechanical

3

Cooling device bypass – Figure 3

Cooling device bypass is also a valid control method if
the chiller temperature requirements can be maintained.

Advantage:

• Excellent control by maintaining constant water flow
through the condenser.

Disadvantage:

• Higher cost because of the dedicated pump required for
each chiller if condenser pressure is the control signal.

Figure 3

1

CO

4

2A

7

CI

5A

6

CDS

4

EO

EVP

Condenser water pump with variable frequency drive –
Figure 4

Advantages:

• Pumping cost can be reduced. Good cooling device
temperature control.

• Relatively low first cost.

Disadvantage:

• Increased rate of fouling due to lower water velocity in
the condenser.

Figure 4

7

CO

CDS

CI

5B

4

8

EO

EI

EVP

EI

1 = Electric valve actuator

2A = 3-way valve or 2 butterfly valves

2B = 2 butterfly valves

3 = RTSF controller

4 = Refrigerant pressure line

5A = Condenser water pump

5B = Condenser water pump with VFD

6 = To/from cooling load

7 = To/from cooling device

8 = Electric controller

EI = Evaporator Inlet

EO = Evaporator Outlet

CI = Condenser Inlet

CO = Condenser Outlet

RLC-SVX023A

19

Installation - Mechanical

Condenser Water Regulating Valve
Adjustment

A separate Settings Menu tab entitled “Condenser
Head Pressure Control -Setup” that is only visible if
the configuration is selected, contain the following
settings and manual overrides for user adjustments and
commissioning all under one tab:

• “Off State” Output Command (0-10 Vdc, 0.1 volt
increments, Default 2.0 Vdc)

• Output Voltage @Desired Minimum Flow (Adj: 0 to 10.0
in 0.1 volt increments, Default 2.0 Vdc)

• Desired Minimum Flow (Adj:0-100% of full flow in
1%intervals, Default 20%)

• Output Voltage @Desired Maximum Flow (Adj: 0 to 10.0
in 0.1 volt increments (or finer),Default 10 Vdc)

• Actuator Stroke Time (Min to Max Range Time)(Adj: 1 to
1000 seconds, in 1 second increments, Default 30s)

• Damping Coefficient (adj: 0.1 to 1.8, in 0.1 increments,
Default .5)

• Head Pressure Control Override (enumeration of:
disabled (auto),”off” state, minimum, maximum
(100%),) default : disabled (auto). When this setting is in
“disabled (auto)”

• Condenser Water Pump Prerun Time

WARNING: In low temperature chilled water
applications, in the case of a power loss, there is a risk
of a condenser freeze-up. For low temperature chilled
water applications, it is recommended to take freeze
protection measures.

20

RLC-SVX023A

Installation - Electrical

General Recommendations

For proper electrical component operation, do not locate
the unit in areas exposed to dust, dirt, corrosive fumes,
or excessive humidity. If any of these conditions exist,
corrective action must be taken.

When reviewing this manual keep in mind:

• All field-installed wiring must be in accordance with
local regulations, CE directives and guidelines. Be sure
to satisfy proper equipment grounding requirements
according to CE.

• The following standardized values - Maximum Amps -

Short Circuit Amps - Starting Amps are displayed on
unit nameplate.

• All field-installed wiring must be checked for proper
terminations, and for possible shorts or grounds.

Note: always refer to wiring diagrams shipped with
chiller or unit submittal for specific electrical schematic
and connection information.

Important: to prevent control malfunctions, do not run
low voltage wiring (<30V) in conduit with conductors
carrying more than 30 volts.

WARNING! Hazardous Voltage with Capacitor!

Disconnect all electric power, including remote
disconnects and discharge all motor start/run and
AFD (Adaptive Frequency™ Drive) capacitors before
servicing. Follow proper lockout/tagout procedures to
ensure the power cannot be inadvertently energized.

• For variable frequency drives or other energy storing
components provided by Trane or others, refer to the
appropriate manufacturer’s literature for allowable
waiting periods for discharges capacitors. Verify with
an appropriate voltmeter that all capacitors have
discharged.

• DC bus capacitors retain hazardous voltages after input
power has been disconnected. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized.

After disconnecting input power, wait twenty (20) minutes
for units which are equipped with variable frequency drive
(0V DC) before touching any internal components.

Failure to follow these instructions could result in death
or serious injury.

For additional information regarding the safe discharge
of capacitors, see “Adaptive Frequency™ Drive (AFD3)
Capacitor Discharge”.

• However, for any intervention in the AFD, the indicated
time on the label of the AFD must be respected.

Before installing the chiller with AFD, the user must
evaluate the potential electromagnetic problems in the
surrounding area. The following should be considered:

a) the presence above , below and adjacent to the unit of
for example: welding equipment or other power cables,
control cables or signaling and telephone cables;

b) receivers and transmitters, radio and television;

c) computer and other control equipment ;

d) the critical safety equipment, eg protection of
industrial equipment ;

e) the health of neighboring persons, for example, use of
pacemakers or appliances against deafness ;

f) the immunity of other equipment in the environment.
The user must ensure that the other materials used
in the environment are compatible. This may require
additional protection measures ;

If electromagnetic disturbances are detected, it shall be
the responsibility of the user to resolve the situation.

In any case, the electromagnetic interferences have to be
reduced until they are no longer troublesome.

All wiring must comply with national electric regulations.
Minimum circuit ampacities and other unit electrical
data is on the unit nameplate. See the unit order
specifications for actual electrical data. Specific electrical
schematics and connection diagrams are shipped with
the unit.

Do not allow conduit to interfere with other components,
structural members or equipment. Control voltage
(110V) wiring in conduit must be separate from conduit
carrying low voltage (<30V) wiring. To prevent control
malfunctions, do not run low voltage wiring (<30V) in
conduit with conductors carrying more than 30V.

RLC-SVX023A

21

Installation - Electrical

Power Supply Wiring

Model RTSF chillers are designed according to European
standard EN 60204-1; therefore, all power supply wiring
must be sized and selected accordingly by the project
engineer.

Water Pump Power Supply

Provide power supply wiring with fused disconnect for
both the chilled water and condenser water pumps.

Electrical Panel Power Supply

Power supply wiring instructions for the starter/control
panel are:

Run the line voltage wiring in conduit to the access
opening(s) on the starter/control panel. See the product
catalog for wire sizing and selection information
and refer to general data that show typical electrical
connection sizes and locations. Always refer to submittal
information for your actual unit specifications.

Some connections required the user to provide an
external source of power. The 110V control power
transformer is not sized for additional load.

CAUTION

Unit with AFD version must not be linked to the neutral
wiring of the installation.

Units are compatible with the following neutral
operating conditions:

TNS IT TNC TT

Standard Special Special Special

- on request - on request - on request

Differential protection should be suited for industrial
machinery with current leak which can be higher than
500 mA (several motors and frequency drives).

CAUTION! To avoid corrosion, overheating or general
damage, at terminal connections, unit is designed for
copper Conductors only. In case of aluminum cable,
bi-material connecting devices are mandatory. Cable
routing inside control panel should be made case by
case by installer.

Compressor Motor Phase
Sequencing

Always verify that proper rotation of the chiller
compressor is established before the machine is started.
Proper motor rotation requires confirmation of the
electrical phase sequence of the power supply. The
motor is internally connected for clockwise rotation with
the incoming power supply phased A, B, C (L1, L2, L3).

To confirm the correct phase sequence (ABC), use a
phase meter.

Basically, voltages generated in each phase of a
polyphase alternator or circuit are called phase voltages.
In a 3-phase circuit, 3 sine wave voltages are generated,
differing in phase by 120 electrical degrees. The order
in which the 3 voltages of a 3-phase system succeed
one another is called phase sequence or phase rotation.
This is determined by the direction of rotation of the
alternator. When rotation is clockwise, phase sequence is
usually called “ABC.”

This direction may be reversed outside the alternator
by interchanging any two of the line wires. It is this
possible interchange of wiring that makes a phase
sequence indicator necessary if the operator is to quickly
determine the phase rotation of the motor.

Module and Control Panel
Connectors

All connectors can be unplugged or the wires can be
removed. If an entire plug is removed, make sure the
plug and the associated jack are marked for proper
location identification during reinstallation.

All electrical drawings, schematics and control panel
layout are included in the documentation package sent
with the chiller.

22

RLC-SVX023A

Interconnecting Wiring (Field Wiring
Required)

Important: Do not turn chiller on or off using the chilled

water pump interlocks.

When making field connections, refer to the appropriate
field layout, wiring, schematics and controls diagrams
that ship with the unit. Whenever a contact closure
(binary output) is referenced, the electrical rating is:

At 120 VAC 7.2 amp resistive

2.88 amp pilot duty

250 W, 7.2 FLA,

43.2 LRA

At 240 VAC 5.0 amp resistive

2.0 amp pilot duty

250 W, 3.6 FLA,

21.3 LRA

Installation - Electrical

Whenever a dry contact input (binary input) is
referenced, the electrical rating is 24VDC, 12 mA.

Whenever a control voltage contact input (binary input)
is referenced, the electrical rating is 120 VAC, 5mA.

Some connections require the user to provide an
external source of power. The 110V control power
transformer is not sized for additional load.

Chilled Water Pump Control

Tracer UC800 has a evaporator water pump output
relay that closes when the chiller is given a signal to
go into the Auto mode of operation from any source.
The contact is opened to turn off the pump in the event
of most machine level diagnostics to prevent the build
up of pump heat. To protect against the build-up of
pump heat for those diagnostics that do not stop and/
or start the pump and to protect against the condition
of a bad flow switch, the pump shall always be stopped
when refrigerant pressure is seen to be close to heat
exchanger design pressure.

Chilled Water Flow Interlock

Tracer UC800 has an input that will accept a contact
closure from a proof-of-flow device such as a flow
switch. The flow switch is to be wired in series with the
chilled water pump starter’s auxiliary contacts. When
this input does not prove flow within 20 minutes relative
to transition from Stop to Auto modes of the chiller, or
if the flow is lost while the chiller is in the Auto mode
of operation, the chiller will be inhibited from running
by a non-latching diagnostic. The flow switch input
shall be filtered to allow for momentary openings and
closings of the switch due to turbulent water flow. This
is accomplished with a 6 seconds filtering time. The
sensing voltage for the condenser water flow switch is
115/240 VAC.

IMPORTANT! DO NOT cycle the chiller through starting
and stopping the chilled water pump. This could cause
the compressor to shut down fully loaded. Use the
external stop/start input to cycle the chiller.

RLC-SVX023A

23

Installation - Electrical

Condenser Water Pump Control

Tracer UC800 provides a contact closure output to start
and stop the condenser water pump. It will allow to run
the condenser pump after compressor stop to avoid risk
of freezing due to refrigerant migration from evaporator.

Condenser Water Pump Prestart time has been added to
help with cold condenser water problems. In very cold
outdoor ambient, the cooling device’s sump would reach
the chiller some time after the low system differential
pressure protection had run through its ignore time,
and result in an immediate shutdown and latching
diagnostic. By simply starting the pump earlier, and
allowing mixing of the warmer indoor loop with the
cooling device’s sump, this problem can be avoided.

Condenser Water Flow Interlock

The Tracer UC800 shall accept an isolated contact closure
input from a customer installed proof-of-flow device
such as a flow switch and customer provided pump
starter auxiliary contact for interlocking with condenser
water flow.

The input shall be filtered to allow momentary openings
and closings of the switch due to turbulent water flow,
etc. This shall be accomplished with a 6 seconds filtering
time. The sensing voltage for the condenser water flow
switch is 115/240 VAC.

On a call for cooling after the restart inhibit timer has
timed out, the Tracer UC800 shall energize the condenser
water pump relay and then check the condenser water
flow switch and pump starter interlock input for flow
confirmation.

Startup of the compressor will not be allowed until flow
has proven. If flow is not initially established within
1200 seconds (20 minutes) of the condenser pump
relay energizing, an automatically resetting diagnostic
“Condenser Water Flow Overdue” shall be generated
which terminates the prestart mode and denergizes
the condenser water pump relay. This diagnostic is
automatically reset if flow is established at any later
time.

Note: This diagnostic would never automatically reset
if Tracer UC800 was in control of the condenser pump
through its condenser pump relay since it is commanded
off at the time of the diagnostic. It could however reset
and allow normal chiller operation if the pump was
controlled from some external source.

Programmable Relays (Alarm and Status)

Tracer UC800 provides a flexible alarm or chiller status
indication to a remote location through a hard wired
interface to a dry contact closure. 4 relays are available
for this function as a Quad Relay Output LLID and
a second quad relay board can be field mounted if
more than 4 different alarm/status are needed (refer to
your local Trane service). The events/states that can be
assigned to the programmable relays are listed in the
following table.

24

RLC-SVX023A

The Tracer UC800 Service Tool (TU) is used to install and
assign any of the above listed events or status to each of
the 4 relays. The default assignments for the 4 available
relays are listed below.

Installation - Electrical

LLID Name

Operating Status
Programmable Relays

LLID Software
Relay Designation Output Name Default

Relay 0 Status Relay 1, J2-1,2,3 Evaporator Freeze Avoidance

Relay 1 Status Relay 2, J2-4,5,6 Condenser Freeze Avoidance

Relay 2 Status Relay 3, J2-7,8,9 Compressor Running

Relay 3 Status Relay 4, J2-10,11,12 Latching Alarm

If the evaporator/condenser pump request relays are
not used to manage the evaporator/condenser water
pumps then the evaporator/condenser freeze avoidance
request relays must be connected to the water pump
management system to switch the water pumps ON
when the Tracer UC800 identifies a risk of freeze up.

Latching input

The Tracer UC800 provides auxiliary control for a
customer specified/installed latching trip out. When
this customer-furnished remote contact is provided,
the chiller will run normally when the contact is closed.
When the contact opens, the unit will trip off on a
manually resettable diagnostic. This condition requires
manual reset at the chiller switch on the front of the
control panel.

External Auto/Stop

If the unit requires the external Auto/Stop function, the
installer must provide leads from the remote contacts to
the proper terminals of the LLID on the control panel. The
chiller will run normally when the contacts are closed.
When the contact opens, the compressor(s), if operating,
will go to the RUN : UNLOAD operating mode and cycle
off. Unit operation will be inhibited. Re-closure of the
contacts will permit the unit to automatically return to
normal operation.

NOTE: A “panic “ stop (similar to “emergency “ stop) can
be manually commanded by pressing the STOP button
twice in a row, the chiller will immediately shut down,
but without creating a latching diagnostic.

Request

Request

Soft Loading

Soft loading will prevent the chiller from going to full
capacity during the pull-down period. The Tracer UC800
control system has two soft loading algorithms running
all of the time. They are capacity control soft loading and
current limit soft loading. These algorithms introduce the
use of a Filtered Chilled Water Setpoint and a Filtered
Current Limit Setpoint. After the compressor has been
started, the starting point of the filtered chilled water
setpoint is initialized to the value of the Evap Leaving
Water Temperature. The filtered current limit setpoint
is initialized to the value of the Current Limit Softload
Starting Percent. These filtered setpoints allow for a
stable pull-down that is user adjustable in duration. They
also eliminate sudden transients due to setpoint changes
during normal chiller operation.

3 settings are used to describe the behavior of soft
loading. The setup for soft loading can be done using TU.

• Capacity Control Softload Time: This setting controls the

time constant of the Filtered Chilled Water Setpoint. It is
settable between 0 and 120 min.

• Current Limit Control Softload Time: This Setting

controls the time constant of the Filtered Current Limit
Setpoint. It is settable between 0 and 120 minutes.

• Current Limit Softload Starting %: This setting controls

the starting point of the Filtered Current Limit Setpoint.
It is adjustable from 20 to 100% RLA.

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25

Installation - Electrical

LonTalk Communication Interface - Optional

Tracer UC800 provides an optional LonTalk
Communication Interface (LCI-C) between the chiller and
a BAS. An LCI-C LLID shall be used to provide “gateway”
functionality between the LonTalk protocol and the
chiller.

Bacnet Communication Interface - Optional

Tracer UC800 provides an optional Bacnet
communication interface between the chiller and a BAS.
Bacnet communication capability is fully integrated on
UC800. For further information see Integration Guide.

Modbus Communication Interface - Optional

Tracer UC800 provides an optional Modbus
communication Interface between the chiller and a BAS.
Modbus communication capability is fully integrated on
UC800. For further information see the Integration guide.

Ice Making Contact - Optional

Tracer UC800 accepts a contact closure input to
initiate Ice Building. When in the ice building mode,
the compressor will be fully loaded (not given a low
setpoint) and will continue to operate until the ice
contacts open or the return water temperature reaches
the Ice Termination Setpoint. If terminated on return
setpoint, Tracer UC800 will not allow the chiller to restart
until the ice making contact is opened.

Ice Machine Control - Optional

Tracer UC800 provides an output contact closure that
can be used as a signal to the system that ice building
is in operation. This relay will be closed when ice
building is in progress and open when ice building has
been terminated by either Tracer UC800 or the remote
interlock. It is used to signal the system changes required
to convert to and from ice making.

External Chilled Water Setpoint - Optional

Tracer UC800 will accept either a 2-10 VDC or a 4-20 mA
input signal, to adjust the chilled water setpoint from a
remote location.

Auxiliary Chilled/Hot Setpoint Contact - Optional

Tracer UC800 accepts a contact closure input to switch
from BAS/External/Front Panel setpoint to a customer
defined auxiliary setpoint. By default, chilled water
auxiliary setpoint is set to 9°C and hot water auxiliary
setpoint is set to 33°C.

External Current Limit Setpoint - Optional

Tracer UC800 will accept either a 2-10VDC or a 4-20mA
input signal to adjust the current limit setpoint from a
remote location.

Percent Condenser Pressure Output - Optional

Tracer UC800 provides a 2-10 VDC analog output to
indicate condenser pressure in percent of software High
Pressure Cutout (soft HPC).

Percent HPC =(Lowest Condenser Pressure of all running
circuits (abs) / Soft HPC (abs))*100.

Refrigerant Differential Pressure Indication - Optional

Tracer UC800 provides a 2-10 VDC analog output
to indicate refrigerant differential pressure with the
endpoints customer defined.

Refrigerant Differential Pressure = Lowest of (condenser
refrigerant pressure cktx - evaporator refrigerant
pressure cktx).

Compressor Percent RLA Output - Optional

Tracer UC800 provides a 0-10 Vdc analog output to
indicate %RLA of compressor starter average phase
current. 2 to 10 Vdc corresponds to 0 to 120% RLA.

26

RLC-SVX023A

Operating Principles Mechanical

This section contains an overview of the operation
and maintenance of RTSF chillers equipped with
microcomputer-based control systems. It describes the
overall operating principles of the design. Following
the section is information regarding specific operating
instructions, detailed descriptions of the unit controls
and options and maintenance procedures that must be
performed regularly to keep the unit in top condition.
Diagnostic information is provided to allow the operator
to identify system malfunctions.

Note: To ensure proper diagnosis and repair, contact a
qualified service organization if a problem should occur.

General

The unit is mono compressor, single circuit, water­cooled liquid chillers. These units are equipped with unit
mounted starter/control panels. The basic components
of RTSF unit are:

• Unit-mounted panel containing starter and Tracer
UC800 controller and Input/output LLIDS

• Helical-rotary compressor

• Evaporator

• Electronic expansion valve

• Water-cooled condenser

• Oil supply system

• Oil cooler (application dependent)

• Related interconnecting piping

• AFD (Adaptive Frequency Drive)

Refrigeration (Cooling) Cycle

The refrigeration cycle of the chiller is conceptually
similar to that of other Trane chiller products. It makes
use of a BPHE evaporator.

The compressor is a twin-rotor helical-rotary type. It
uses a suction gas-cooled motor that operates at lower
motor temperatures under continuous full- and part­load operating conditions. An oil management system
provides oil-free refrigerant to the BPHE to maximize
heat transfer performance, while providing lubrication
and rotor sealing to the compressor. The lubrication
system ensures long compressor life and contributes to
quiet operation.

Condensing is accomplished in BPHE.

Refrigerant is metered through the flow system using
an electronic expansion valve that maximizes chiller
efficiency at part load.

A unit-mounted starter AFD and control panel is
provided on every chiller. Microprocessor-based unit
control modules (Tracer UC800) provide for accurate
chilled BPHE water control as well as monitoring,
protection and adaptive limit functions. The “adaptive”
nature of the controls intelligently prevents the chiller
from operating outside of its limits, or compensates for
unusual operating conditions, while keeping the chiller
running rather than simply tripping due to a safety
concern. When problems do occur, diagnostic messages
assist the operator in troubleshooting.

RLC-SVX023A

27

Operating Principles Mechanical

Cycle Description

The refrigeration cycle for the chiller can be described
using the pressure-enthalpy diagram shown in
Figure 5. Key State Points are indicated on the figure
and are referenced in the discussion following. Typical
schematics of the system showing the refrigerant flow
loop as well as the lubricant flow loop is shown in
Figure.

Evaporation of refrigerant occurs in the evaporator that
maximizes the heat transfer performance of the heat
exchanger while minimizing the amount of refrigerant
charge required. A metered amount of refrigerant liquid
enters a distribution system in the evaporator and is
then distributed to plates in the evaporator.

The refrigerant vaporizes as it cools the water flowing
through the evaporator plates. Refrigerant vapor leaves
the evaporator as superheated vapor (State Point 1).

The refrigerant vapor generated in the evaporator flows
to the suction end of the compressor where it enters
the motor compartment of the suction-gas-cooled
motor. The refrigerant flows across the motor, providing
the necessary cooling, then enters the compression
chamber. Refrigerant is compressed in the compressor to
discharge pressure conditions. Simultaneously, lubricant
is injected into the compressor for two purposes: (1) to
lubricate the rolling element bearings, and (2) to seal the
very small clearances between the compressor’s twin
rotors.

Immediately following the compression process the
lubricant and refrigerant are effectively divided using
an oil separator. The oil-free refrigerant vapor enters
the condenser at State Point 2. The lubrication and oil
management issues are discussed in more detail in the
compressor description and oil management sections
that follow.

Cooling device water, circulating through the condenser
plates, absorbs heat from this refrigerant and
condenses it.

Refrigerant leaves the condenser as subcooled liquid and
travels to the electronic expansion valve (State Point 4).
The pressure drop created by the expansion process
vaporizes a portion of the liquid refrigerant. The resulting
mixture of liquid and gaseous refrigerant then enters the
Evaporator Distribution system (State Point 5).

The chiller maximizes the evaporator heat transfer
performance while minimizing refrigerant charge
requirements. This is accomplished by metering the
liquid refrigerant flow to the evaporator’s distribution
system using the electronic expansion valve.

A compressor suction superheat measurement provides
feedback information to the Tracer UC800 unit controller,
which commands the electronic expansion valve to
reposition when necessary.

Figure 5 – Pressure /Enthalpy Curve

28

RLC-SVX023A

Operating Principles Mechanical

Refrigerant flow diagram

Refrigerant flow diagram for unit is supplied with drawing package with unit order.

Figure 6 – Example of typical refrigerant flow diagram

1 = Screw compressor
2 = Brazed plate evaporator
3 = Brazed plate condenser
4 = Evaporator water inlet connection
5 = Evaporator water outlet connection
6 = Condenser water inlet connention
7 = Condenser water outlet connention
8 = Oil separator
9 = Electric expantion valve
10 = Sight glass
11 = Relief valve
12 = Service valve
13 = Oil service valve
14 = Schraeder valve

REFRIGERANT LINE

OIL LINE

CHILLED HEATED WATER LINE

INSULATION

PT = Pressure transducer
PSH = High pressure relief valve
PSL = Low pressure relief valve
PZH = High pressure switch
TT = Temperature sensor
TCE = Electronic expansion valve
TC = Thermostatic expansion valve
LT = Liquid level sensor
Option A = Auxiliary oil cooler
Option B = Dual relief valve for discharge side
Option C = Single or dual relief valve for suction side
Option D = Liquid line according to evaporator size

RLC-SVX023A

29

Operating Principles Mechanical

Compressors

The compressor used by the chiller consists of 3 distinct
sections: the motor, the rotors and the bearing housing.

Compressor Motor

A two-pole, hermetic, squirrel-cage induction motor
directly drives the compressor rotors. The motor is
cooled by suction vapor drawn from the evaporator
and entering the end of the motor housing through
the suction line.

Compressor Rotors

Each chiller uses a semi-hermetic, direct-drive Helical­Rotary type compressor. Excluding the bearings, each
compressor has only 3 moving parts: 2 rotors - “male”
and “female” - provide compression, and a slide valve
that controls capacity. The male rotor is attached to, and
driven by, the motor, and the female rotor is, in turn,
driven by the male rotor. Separately housed bearing
sets are provided at each end of both rotors. Female and
male unloader piston moves along the respective rotor.

The helical-rotary compressor is a positive displacement
device. Refrigerant from the evaporator is drawn into
the suction opening at the end of the motor section.
The gas is drawn through a suction strainer across
the motor, cooling it, and then into the rotor section.
It is then compressed and discharged directly into the
discharge line.

There is no physical contact between the rotors and
compressor housing. Oil is injected through adequate
ports, coating both rotors and the compressor housing
interior. Although this oil does provide rotor lubrication,
its primary purpose is to seal the clearance spaces
between the rotors and compressor housing. A positive
seal between these internal parts enhances compressor
efficiency by limiting leakage between the high pressure
and low pressure cavities.

Capacity control is accomplished by means of male and
female unloader piston.

Slide Valve movement

Slide valve operates coordinated with AFD. Tracer UC800
algorithm controls the compressor capacity with higher
slide valve capacity and lower AFD frequency to get
higher efficiency

This loading/unloading schema is a general figure, it
could be different in case of sudden modifications of
the operating data. Also it has not to be considered as a
starting/stopping mode.

Slide Valve AFD

Loading

Unloading

30 Hz 50 Hz

60%

Capacity

60%

Capacity

100%

Capacity

100%

Capacity

Above 71.1°C condenser saturated temperature in order
to allow sufficient motor cooling there is no possibility to
decrease frequency below

- 50Hz for sizes 050 to 090

- 60Hz for sizes 100 and 110

30

RLC-SVX023A

Figure 7 – Compressor description

Operating Principles Mechanical

A = Oil control valve (hidden)
B = Female unloader piston
C = Discharge check valve
D = Female rotor
E = Motor terminals
F = Suction strainer
G = Motor rotor
H = Male unloader piston
I = Male rotor
J = Oil filter

RLC-SVX023A

31

Operating Principles Mechanical

Oil Management System

Oil Separator

The oil separator consists of a vertical tube, joined
at the top by the refrigerant discharge line from the
compressor. This causes the refrigerant to swirl in the
tube and throws the oil to the outside, where it collects
on the walls and flows to the bottom. The compressed
refrigerant vapor, stripped of oil droplets, exits out
the top of the oil separator and is discharged into the
condenser.

Oil that collects in the bottom of the oil separator at
condensing pressure during compressor operation;
therefore, oil is constantly moving to lower pressure
areas.

Oil Flow Protection

Oil flow and quality is proven through a combination of a
number of sensors, most notably a pressure transducer.

If for any reason oil flow is obstructed because of a
plugged oil filter, closed service valve, faulty master
solenoid, or other source, the oil pressure transducer will
read an excessively high pressure drop in the oil system
(relative to the total system pressure) and shut down
the chiller.

To ensure the required system differential pressure
is adequate to move oil to the compressor, the Tracer
UC800 attempts to both control a minimum system
differential pressure as well as monitor it. Based
on readings from pressure transducers in both the
evaporator and condenser. Once the minimum is met,
the EXV will return to normal liquid level control (see
the paragraph on “Cycle Description”). If the differential
is significantly lower than required, the unit will trip
and initiate appropriate diagnostics and would enforce
a compressor “cool down” period. To ensure proper
lubrication and minimize refrigerant condensation in the
oil sump, heaters are mounted on the bottom of the oil
sump. An auxiliary contact of the compressor starter,
energizes these heaters during the compressor off cycle
to maintain a proper elevation of the oil temperature.
The heater element is continuously energized while the
compressor is off and does not cycle on temperature.

Oil Filter

All chillers are equipped with replaceable-element oil
filters. Each removes any impurities that could foul
the compressor internal oil supply galleries. This also
prevents excessive wear of compressor rotor and
bearing surfaces and promotes long bearing life. Refer
to maintenance section for recommended filter element
replacement intervals.

Compressor Rotor Oil Supply

Oil flowing through this circuit enters the compressor
rotor housing. From there it is injected along the rotors
to seal clearance spaces around the rotors and lubricate
the contact line between the male and female rotors.

Lubricant Recovery

Despite the high efficiency of the oil separators, a small
percentage of oil will get past them, move through the
condenser, and eventually end up in the evaporator. This
oil must be recovered and returned to the oil separator.
The function of oil return is accomplished by the BPHE
that will push the oil with the evaporated refrigerant
through the suction line to the compressor.

Oil Cooler

The oil cooler is a brazed plate heat exchanger designed
to transfer 3.5 kW of heat from the oil to the suction
side of the system. Subcooled liquid is the cooling
source. The oil cooler is required on units running at
high condensing or low suction temperatures. The high
discharge temperatures in these applications increase
oil temperatures above the recommended limits for
adequate lubrication and reduce the viscosity of the oil.

32

RLC-SVX023A

Figure 8 – Typical operating map

Typical Operating map

AOC = Auxiliary Oil Cooler

RLC-SVX023A

33

Controls/Tracer TD7 Operator Interface

Controls Overview

The unit uses the following control/interface
components:

• Tracer™ UC800 Controller

• Tracer TD7 Operator Interface

Communication Interfaces

There are four connections on the UC800 that support
the communication interface. See User Guide to locate
the following ports: “Wiring and Ports Description”
section.

• BACnet MS/TP

• BACnet IP

• Modbus Slave

• LonTalk using LCI-C (from the IPC3 bus)

See chiller User Guide for information on
communication interface.

Tracer TD7 Operator Interface

Operator Interface

Information is tailored to operators, service technicians
and owners. When operating a chiller, there is specific
information you need on a day-to-day basis, like
setpoints, limits, diagnostic information, and reports.
Day-to-day operational information is presented at the
display. Logically organized groups of information-chiller
mode of operation, active diagnostics, settings and
reports put information conveniently at your fingertips.

Tracer™ TU

The TD7 operator interface allows for daily operation
tasks and setpoint changes. However to adequately
service chiller, Tracer™ TU service tool is required
(Non-Trane personnel, contact your local Trane office
for software purchase information). Tracer TU adds a
level of sophistication that improves service technician
effectiveness and minimizes chiller downtime. This
portable PC-based service-tool software supports service
and maintenance tasks.

34

RLC-SVX023A

Pre-Start Checkout

CAUTION

Proper Water Treatment!

The use of untreated or improperly treated water may
result in scaling, erosion, corrosion, algae or slime. It
is recommended that the services of a qualified water
treatment specialist be engaged to determine what
water treatment, if any, is required. Trane assumes no
responsibility for equipment failures which result from
untreated or improperly treated water, or saline or
brackish water.

Installation Checklist

Complete this checklist as the unit is installed, and verify
that all recommended procedures are accomplished
before the unit is started. This checklist does not replace
the detailed instructions given in the “Installation
Mechanical” and “Installation Electrical” sections of
this manual. Read both sections completely, to become
familiar with the installation procedures, prior beginning
the work.

General

When installation is complete, before starting the unit,
the following prestart procedures must be reviewed
and verified:

1. Inspect all wiring connections in the compressor

power circuits (disconnects, terminal block,
contactors, compressor junction box terminals
and so forth) to ensure they are clean and tight.

2. Open all refrigerant valves in the discharge, liquid,

and oil return lines.

3. Check the power-supply voltage to the unit at the

main-power fused-disconnect switch. Voltage must
be within the voltage use range and also stamped
on the unit nameplate. Voltage fluctuation must not
exceed 10%.Voltage imbalance must not exceed 2%.

4. Check the unit power phasing L1-L2-L3 in the starter

to ensure that it has been installed in a “A-B-C”
phase sequence.

5. Fill the evaporator and condenser water circuit.

Vent the system while it is being filled. Open the
vents on the top of the evaporator water and
condenser boxes while filling and close when filling
is completed.

6. Close the fused-disconnect switch(es) that supplies

power to the chilled-water pump starter.

7. Start the evaporator and condenser water pump to

begin circulation of the water. Inspect all piping for
leakage and make any necessary repairs.

8. With water circulating through the system, adjust

the water flow and check the water pressure drop
through the evaporator and condenser.

9. Adjust the chilled-water flow switch for proper
operation.

10. Reapply power to complete the procedures.

11. Prove all Interlock and Interconnecting Wiring
Interlock and External as described in the Electrical
Installation section.

12. Check and set, as required, all UC800 TD7 menu
items.

13. Stop the evaporator and condenser water pump.

14. Energize the compressor and oil separator heaters
24 hours, prior to unit start up.

Unit Voltage Power Supply

Unit voltage must meet the criteria given in the
installation Electrical Section. Measure each lead of
the supply voltage at the main power fused-disconnect
switch for the unit. If the measured voltage on any lead
is not within the specified range, notify the supplier of
the power and correct the situation before operating
the unit.

Unit Voltage Imbalance

Excessive voltage imbalance between the phases of
a three-phase system can cause motors to overheat
and eventually fail. The maximum allowable unbalance
is 2%. Voltage imbalance is determined using the
following calculations:

% Imbalance = [(Vx – Vave) x 100/Vave]

Vave = (V1 + V2 + V3)/3

Vx = phase with greatest difference from Vave (without
regard to the sign)

RLC-SVX023A

35

Pre-Start Checkout

Unit Voltage Phasing

It is important that proper rotation of the compressors
be established before the unit is started. Proper motor
rotation requires confirmation of the electrical phase
sequence of the power supply. The motor is internally
connected for clockwise rotation with the incoming
power supply phases A-B-C.

When rotation is clockwise, the phase sequence is
usually called “ABC”, when counterclockwise “CBA” This
direction may be reversed by interchanging any two of
the line wires.

1. Stop the unit from TD7/UC800.

2. Open the electrical disconnect or circuit protection
switch that provides line power to the line power
terminal block(s) in the starter panel (or to the unit
mounted disconnect).

3. Connect the phase-sequence indicator leads to the
line power terminal bloc (L1, L2, L3).

4. Turn power on by closing the unit supply-power
fused-disconnect switch.

5. Read the phase sequence on the indicator. The ABC
LED of the phase indicator will glow.

WARNING! It is imperative that L1, L2, and L3 in the
starter be connected in the A-BC phase sequence to
prevent equipment damage due to reverse rotation.

WARNING! To prevent injury or death due to
electrocution, take extreme care when performing
service procedures with electrical power energized.

CAUTION! Do not interchange any load leads that are
from the unit contactors or the motor terminals. Doing
so may damage the equipment.

Water System Flow Rates

Establish a balanced chilled-water flow through the
evaporator. The flow rates should be between the
minimum and maximum values given on the pressure
drop curves.

Water System Pressure Drop

Measure the water-pressure drop through the evaporator
on the field installed pressure taps on the system water
piping. Use the same gauge for each measurement. Do
not include valves, strainers, or fittings in the pressure
drop readings.

36

RLC-SVX023A

Unit Start-up

Daily Unit Start Up

The timeline for the sequence of operation begins with a
power-up of the main power to the chiller. The sequence
assumes 1 circuit RTSF water cooled chiller with no
diagnostics or malfunctioning components. External
events such as the operator placing the chiller in AUTO
or STOP, chilled water flow through the evaporator, and
application of load to the chilled water loop causing loop
water-temperature increases, are depicted and the chiller
responses to those events are shown, with appropriate
delays noted. The effects of diagnostics, and other
external interlocks other than evaporator water-flow
proving, are not considered.
Note: unless the UC800 TD7 and building automation
system are controlling the chilled-water pump, the
manual unit start sequence is as follows. Operator
actions are noted.

General

If the present checkout, as discussed above, has been
completed, the unit is ready to start.

1. Press the STOP key on the TD7 display.

2. As necessary, adjust the set point values on the TD7

menus using Tracer TU.

3. Close the fused-disconnect switch for the

chilledwater pump. Energize the pump(s) to start
water circulation

4. Check the service valve on oil line. This valve

must be open (back seated) before starting the
compressors.

5. Verify that chilled-water pump runs for at least one

minute after the chiller is commanded to stop (for
normal chilled-water systems).

6. Press the AUTO key. If the chiller control calls for

cooling, and all safety interlocks are closed, the unit
will start. The compressor will load and unload in
response to the leaving chilled – water temperature;

After the system has been operating for approximately
30 minutes and has become stabilized, complete the
remaining start up procedures, as follows:

1. Check the evaporator refrigerant pressure and the

condenser refrigerant pressure under Refrigerant
Report on the TD7.

2. Check the EXV sight glasses after enough time has

elapsed to stabilize the chiller. The refrigerant flow
through the sight glasses should be clear. Bubbles in
the refrigerant indicate either low refrigerant charge
or excessive pressure drop in the liquid line, or an
expansion valve that is stuck open. A restriction in
the line can sometimes be identified by a noticeable
temperature differential between the two sides of
the restriction. Frost will often form on the line at
this point. Proper refrigerant charges are shown in
the General Information Section;

3. Measure the system discharge superheat.

4. Clean the air filter located on the door of the control

panel of AFD when required.

Seasonal Unit Startup Procedure

1. Close all valves and reinstall the drain plugs in the
evaporator and condenser.

2. Service the auxiliary equipment according to the
startup and maintenance instructions provided by
the respective equipment manufacturers.

3. Close the vents in the evaporator and condenser
water circuits.

4. Open all the valves in the evaporator and condenser
water circuits.

5. Open all refrigerant valves.

6. If the evaporator and condenser were previously
drained, vent and fill the evaporator and condenser
water circuit. When all air is removed from the
system (including each pass), install the vent plugs
in the evaporator and condenser water connections.

7. Verifiy periodically water characteristics as it is a key
element for heat exchanger reliability.

8. Check the adjustment and operation of each safety
and operating control.

9. Close all disconnect switches.

10. Refer to the sequence for daily unit start up for the
remainder of the seasonal start up.

CAUTION! Ensure that the compressor and oil separator
heaters have been operating for a minimum of 24 hours
before starting. Failure to do so may result in equipment
damage.

System Restart after Extended
Shutdown

1. Verify that the oil line, service valve is open
(back seated).

2. Check the oil separator oil level (see Maintenance
procedures section).

3. Fill the evaporator and condenser water circuit. Vent
the system while it is being filled. Open the vent
on the top of the evaporator and condenser while
filling, and close it when filling is completed.

4. Close the fused-disconnect switches that provide
power to the water pump.

5. Start the evaporator and condenser water pump
and, while water is circulating, inspect all piping for
leakage. Make any necessary repairs before starting
the unit.

6. While the water is circulating, adjust the water flow
and check the water pressure drops through the
evaporator and condenser. Refer to “water-system
flow rates” and “water-system pressure drop”.

7. Adjust the flow switch on the evaporator and
condenser piping for proper operation.

8. Stop the water pumps. The unit is now ready for
startup as described “Startup procedures.

CAUTION! To prevent damage to the compressor, ensure
that all refrigerant valves are open before starting the
unit. Do not use untreated or improperly treated water.
Equipment damage may occur.
Ensure that the compressor and oil separator heaters
have been operating for a minimum of 24 hours before
starting. Failure to do so may result in equipment
damage.

RLC-SVX023A

37

Periodic Maintenance

Overview

This section describes preventative maintenance
procedures and intervals. Use a periodic maintenance
program to ensure optimal performance and efficiency
of the units. An important aspect of the chiller
maintenance program is the regular completion of the
“Operating Log “. When filled out properly the completed
logs can be reviewed to identify any developing trends in
the chiller’s operating conditions.

Weekly Maintenance and Checks

After the unit has operated for approximately 30 minutes
and the system has stabilized, check the operating
conditions and complete the procedures below:

• Log the chiller.

• Check evaporator and condenser pressures with gauges
and compare to the reading on the Clear Language
Display. Pressure readings should fall within the
following ranges specified in the Operating Conditions.

Table 4 – Operating Conditions at Full Load R1234ze

Description Condition

Evaporator pressure 3.5 bar

Condensing pressure 9.4 bar

Discharge superheat 3K

Subcooling 5K

NOTE: Optimum condenser pressure is dependent on
condenser water temperature, and should equal the
saturation pressure of the refrigerant at a temperature 1
to 3°C above that of leaving condenser water at full load.

Monthly Maintenance and Checks

• Review operating log.

• Clean all water strainers in both the chilled and
condensing water piping systems.

• Measure the oil filter pressure drop. Replace oil filter if
required. Refer to “Service Procedures “.

• Measure and log the subcooling and superheat.

• If operating conditions indicate a refrigerant shortage,
leak check the unit using soap bubbles.

• Repair all leaks.

• Trim refrigerant charge until the unit operates in the

conditions listed in the note below.

All conditions stated above are based on the unit running
fully loaded, running at conditions indicated above. If full
load conditions can not be met, refer to note below to
trim the refrigerant charge

Note: entering condenser water: 30°C and entering
evaporator water: 12°C.

38

RLC-SVX023A

Periodic Maintenance

Table 5 – Operating Conditions at Minimum Load R1234ze

Description Condition

Evaporator approach *< 4°C (non-glycol applications)

Condensing approach *< 4°C

Subcooling 1-2°C

EXV percent open 10-20% open

* 0.5°C for new unit.

Annual Maintenance

WARNING: Hazardous Voltage!

Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout
/ tagout procedures to ensure the power can not be
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury.

• Shut down the chiller once each year to check the
following:

• Perform all weekly and monthly maintenance
procedures.

• Check the refrigerant charge and oil level. Refer to
“Maintenance Procedures “. Routine oil changing is not
necessary on a hermetic system.

• Have a qualified laboratory perform an oil analysis to
determine system moisture content and acid level.

IMPORTANT NOTE: Due to the hygroscopic properties
of the POE oil, all oil must be stored in metal containers.
The oil will absorb water if stored in a plastic container.

• Check the pressure drop across the oil filter. Refer to
“Maintenance Procedures “.

• Contact a qualified service organization to leak check
the chiller, to inspect safety controls, and inspect
electrical components for deficiencies.

• Inspect all piping components for leakage and/or
damage. Clean out any inline strainers.

• Clean and repaint any areas that show signs of
corrosion.

• Test vent piping of all relief valves for presence of

refrigerant to detect improperly sealed relief valves.
Replace any leaking relief valve.

• Inspect the condenser tubes for fouling; clean if
necessary. Refer to “Maintenance Procedures “.

• Check to make sure that the crank case heater is
working.

Scheduling Other Maintenance

Depending on chiller duty, contact a qualified service
organization to determine when to conduct a complete
examination of the unit to determine the condition of the
compressor and internal components.

RLC-SVX023A

39

Periodic Maintenance

Contractor Confirmation Check
Sheet

This check sheet must be completed by the installing
contractor and submitted prior to requesting Trane
Service start-up support. The check sheet identifies a
list of items that need to be completed prior to actual
machine start-up.

Contractor Conrmation Check Sheet

Addressed to the Trane Service ofce of:

Job Name: Job location:

Model No.: Sales order No.:

Unit Cooling water

❏ Unit installed ❏ Connected to the unit

❏ Isolator pads in place ❏ Connected to the cooling device

Chilled Water

❏ Connected to the unit ❏ System ushed and then lled

❏ Connected to the air handling units ❏ Pumps run and air bled

❏ Connected to the pumps ❏ Strainers cleaned

❏ System ushed and then lled ❏ Flow switch installed and checked/set

❏ Pumps run and air bled ❏ Throttling cock installed in leaving water

❏ Strainers cleaned ❏ Thermometers installed in leaving/entering water

❏ Flow switch installed and checked/set ❏ Gauges installed in leaving/entering water

❏ Throttling cock installed in leaving water ❏ Cooling water control operational

❏ Thermometers installed in leaving/entering water ❏ Water treatment equipment

❏ Gauges installed in leaving/entering water

❏ Connected to the pumps

Wiring

❏ Power supply connected and available

❏ External interlock connected

Load

❏ System can be operated under load condition

We will therefore require your service technician on job by*_____________________.

Checklist completed by____________________________________________________.

Date____________________________________________________________________.

* Return this completed checklist to your Trane Service office as soon as possible to enable the start-up visit to
be scheduled. Be aware that advance notification is required to allow scheduling of the start-up as close to the
requested date as possible. Additional time required to complete the start-up and adjustment due to incompleteness
of the installation will be invoiced at prevailing rates.

40

RLC-SVX023A

Cleaning the Condenser

CAUTION: Proper Water Treatment!

The use of untreated or improperly treated water may
result in scaling, erosion, corrosion, algae or slime. It
is recommended that the services of a qualified water
treatment specialist be engaged to determine what
water treatment, if any, is required. The manufacturer
assumes no responsibility for equipment failures which
result from untreated or improperly treated water, saline
or brackish water.

Compressor Oil

CAUTION: Equipment Damage!

To prevent oil sump heater burnout, open the unit main
power disconnect switch before removing oil from
the compressor.

Trane Polyolester Oil is the approved oil for the unit.
Polyolester oil is extremely hygroscopic meaning it
readily attracts moisture. The oil can not be stored in
plastic containers due to the hygroscopic properties.
As with mineral oil, if water is in the system it will react
with the oil to form acids. Use Table 6 to determine
the acceptability of the oil. Trane approved oil is
OIL0066E/OIL0067E. The proper charge amounts are
given on General data. Note: Use an oil transfer pump
to change the oil regardless of chiller pressure.

For R1234ze, approved oil is OIL0066E/OIL0067E.

Maintenance Procedures

RLC-SVX023A

41

Maintenance Procedures

Table 6 - POE Oil Properties

Description Acceptable Levels

Moisture content less than 300 ppm

Acid Level
(mg KOH/g)

Running the chiller at minimum load is the best for the quickest return of oil to the separator and sump. The machine
still needs to sit for approximately 30 minutes before the level is taken. At minimum load, the discharge superheat
should be highest. The more heat in the oil as it lays in the sump, the more refrigerant will boil off in the sump and
leave more concentrated oil. The oil level in the oil sump can be measured to give an indication of the system oil
charge. Follow the procedures below to measure the level.

1. Run the unit fully unloaded for approximately 20 minutes.

2. Cycle the compressor off line.

less than 0.5 TAN

Oil Level Check

Figure 9 – Determining oil level in the oil separator

1 = Oil separator
2 = Valve
3 = 1/4” refrigeration hose
4 = Sight glass
5 = Minimum oil level
6 = Maximum oil level

How to measure the oil level:

1. Use the oil drain valve (bottom side) and the
service valve on the oil separator (top side). This
measurement can be made, when the circuit is not
running. Note: the bottom plate of the oil separator is
approximately 25mm thick.

2. The initial oil charge should be approximately at the
level in of the above chart. This is the approximate
oil level if all the oil is in the oil lines, filter, and oil
sump, and the unit is in vacuum so that there is no
refrigerant dissolved in the oil.

After the unit has run for a while, the oil level in the
sump can vary greatly. However, if the unit has run
‘normal’ conditions for a long time, the minimum and
maximum oil levels should correspond to values shown
in below table. However excessive oil in the system will
deteriorate the evaporator approach temperature.

Oil

separator

size

8” “M” type 50 mm 180 mm

10” “N” type 50 mm 140 mm

Compressors type

Min. oil

level (mm)

Max. oil

level (mm)

The field charging procedure depends on the
circumstances that resulted in the need for oil charge.

1. Some services procedures may result in loss of

small quantities of oil that must be replaced (oil
analysis, compressor filter replacement, re-tubing the
evaporator, and so forth).

2. Additionally, some maintenance procedures

may result in virtually all the oil being removed
(compressor motor burn or total removal of the charge
to trouble shoot a unit).

3. Finally, leaks may result in a loss of oil that must be
replaced.

42

Oil charging data.

The oil quantity is written on the nameplate of the unit.

RLC-SVX023A

Maintenance Procedures

Removing Compressor Oil

The oil in the compressor oil separator is under a
constant positive pressure at ambient temperature. To
remove oil, open the service valve located on the bottom
of the oil separator and drain the oil into a suitable
container using the procedure outlined below:

CAUTION: POE Oil!

Due to the hygroscopic properties of the POE oil, all oil
must be stored in metal containers. The oil will absorb
water if stored in a plastic container.

Oil should not be removed until the refrigerant is
isolated or removed.

Connect a line to the oil sump drain valve.

Open the valve and allow the desired amount of oil to
flow into the container and close the charging valve.

Measure the exact amount of oil removed from the unit.

Oil Charging Procedure

It is critical to fill the oil lines feeding the compressor
when charging a system with oil. The diagnostic “Loss of
oil at the compressor stopped “ will be generated if the
oil lines are not full on start-up.

To properly charge the system with oil, follow the steps
below:

1. Locate the 1/4 “ schrader valve on the end of the
compressor.

2. Loosely connect oil pump to schrader valve called out

in step 1.

3. Operate oil charging pump until oil appears at

the charging valve connection; then tighten the
connection.

Note: To keep air from entering the oil, the charging
valve connection must be air-tight.

4. Open the service valve and pump in the required

amount of oil.

5. Monitor the “Oil Loss Level Sensor Status in TD7 in

Compressor status view. This display shows whether
the optical sensor is seeing oil (wet) or if it is not (dry).

NOTE: The remainder of the oil charge can be charged
into the 1/4 “ service valve located at the bottom of the
separator if a larger connection is preferred.

Replacing the Main Oil Filter
(Hot Filter)

The filter element should be changed if the oil flow is
sufficiently obstructed. Two things can happen: first, the
chiller may shut down on a “Low Oil Flow “ diagnostic,
or secondly, the compressor may shut down on a “Loss
of Oil at Compressor (Running) diagnostic. If either of
these diagnostics occurs, it is possible the oil filter needs
replacement. The oil filter is not usually the cause of a
Loss of oil at Compressor diagnostic.

Specifically, the filter must be changed if the pressure
drop in the lubrication circuit exceeds the maximum
level as given in Figure 10 below. The charts show the
relationship between the pressure drop measured in the
lubrication circuit as compared with operating pressure
differential of the chiller (as measured by pressures in
the condenser and evaporator).

Normal pressure drops of the lubrication circuit are
shown by the lower curve. The upper curve represents
the maximum allowable pressure drop and indicates
when the oil filter must be changed. Pressure drops that
lie between the lower and upper curves are considered
acceptable.

For a chiller equipped with an oil cooler, add 35 kPa
to the values shown in Figure 10. For example, if the
system pressure differential was 550 kPa, then the clean
filter pressure drop would be approximately 100 kPa
(up from 70 kPa For a chiller with an oil cooler and
operating with a dirty oil filter, the maximum allowable
pressure drop would be 190 kPa (up from 160 kPa).

Under normal operating conditions the element should
be replaced after the first year of operation and then as
needed thereafter.

RLC-SVX023A

43

Maintenance Procedures

Figure 10 – Oil Filter Replacement Chart

GP2 Clean Filter Versus Recommended Filter Replacement

GP2 / RTWD Clean Filter Versus Recommended Filter Replacement

Line UC800 RTSF Pressure Protection Scheme

Unit shut down

Unit shut down

Line

= 25 psid

= 25 psid

Minimum system pressure differential

Minimum system pressure differential

CH530 RTWD Oil Pressure Protection Scheme

Clean Filter below this line

Clean Filter below this line

Start protection line for 1st

Start protection line for 1st

2.5 minutes of operation

2.5 minutes of operation

Run protection line after 2.5

Run protection line after 2.5

minutes of operation

minutes of operation

Recommended replacing lter

Recommend replacing filter

44

RLC-SVX023A

Maintenance Procedures

Refrigerant Charge

If a low refrigerant charge is suspected, first determine
the cause of lost refrigerant. Once the problem is
repaired follow the procedures below for evacuating
and charging the unit.

Refrigerant recovery

1. Insure that the water flow is maintained on condenser
and evaporator during all the recovery operation.

2. Connections on evaporator and condenser are

available to remove the refrigerant. Weigh the
refrigerant removed.

CAUTION !

Never recover refrigerant without maintaining nominal
water flow on heat exchangers during all the recovery
operation. Evaporator or condenser could freeze and
bringing severe damages to the unit.

3. Use a “refrigerant transfer machine” and adequate

service cylinders to stock the recovered refrigerant.

4. According to its quality, use recovered refrigerant to
charge the unit or give it to refrigerant producer for
recycling or elimination.

Evacuation and Dehydration

1. Disconnect ALL power before/during evacuation.

2. Connect the vacuum pump to the ½’’ service valves on
the oil separator and on the liquid line.

3. To remove all of the moisture from the system and to

insure a leak free unit, pull the system down below
500 microns.

4. After the unit is evacuated, perform a standing rise
test for at least an hour. The pressure should not rise
more than 150 microns. If the pressures rises more
than 150 microns, either a leak is present or moisture
still in the system.

NOTE: If oil is in the system, this test is more difficult.
The oil is aromatic and will give off vapors that will raise
the pressure of the system.

Refrigerant Charging

Once the system is deemed leak and moisture free,
use the ½’’ service valves at the top of the oil separator
and on the liquid line, after the expansion valve.
Refer to Table 1 and unit nameplate for refrigerant
charge information.

RLC-SVX023A

45

Recommended service routine frequencies

As a commitment to our customers, we have created a wide service network staffed with experienced factory­authorized technicians. At Trane we offer all the benefits of after sales service direct from the manufacturer and we
are committed to our mission statement to provide efficient customer care.

We would be delighted to discuss your individual requirement with you. For further information regarding Trane
maintenance agreements please contact your local TRANE sales office.

Year

1 x x x x x xx

2 x x x x xxx

3 x x x x xxx

4 x x x x xxx

5 x x x x x xxx

6 x x x x x xxx

7 x x x x x xxx

8 x x x x x xxx

9 x x x x x xxx

10 x x x x x xxx

over 10 every year every year

Commis-

sioning

Inspec-

tion visit

Seasonal

shut down

Seasonal

start up

Oil

analysis

(1)

every year

(2)

Vibration

analysis

(2)

x every year

Annual

mainte-

nance

Preven-

tive main-

tenance

3 every

year

This timetable is applicable to units operating in normal conditions with an average of 4000 hours per year.
If operating conditions are abnormally severe, an individual timetable must be made for that unit.

Com-

pressor

R’newal

(3)

40000 h

(1) Schedule as per previous analysis result or at least once a year.

(2) Year 1 to define equipment baseline. Subsequent year based on oil analysis results or schedule as per

vibration analysis.

(3) Recommended at 40 000 run hours or 100 000 equivalent operating hours whichever comes first.

Schedule also depends on results from oil analysis / vibration analysis.

Seasonal start up and shutdown are mainly recommended for Comfort Air Conditionning and annual and preventive
maintenance are mainly recommended for Process application.

46

RLC-SVX023A

Additional services

Oil analysis

Trane Oil Analysis is a predictive tool used to detect
minor issues before they become major problems. It also
reduces failure detection time and allows planning for
appropriate maintenance. Oil changes can be reduced
by half resulting in lower operating costs and a lower
impact on the environment.

Vibration analysis

Vibration analysis is required when oil analysis reveals
the presence of wear indicating the start of possible
bearing or motor failure. Trane oil analysis has the ability
to identify the type of metallic particles in the oil which,
when combined with the vibration analysis, will clearly
point out the failing components.

Vibration analysis should be performed on a regular
basis to build a vibration trend of the equipment and
avoid unplanned downtime and costs.

Compressor R’newal

To ensure a long lifetime for Trane compressors, system
oil and vibration are regularly analyzed. These tests build
a detailed picture of the condition of internal system
components. Over time, they also help build a `wear
trend’ of the equipment. This informs our service experts
whether your compressor is due for minor maintenance
or a complete overhaul.

System upgrade

This Service provides a consulting service.

Upgrading your equipment will increase the unit
reliability and can reduce the operating costs
by optimizing the controls A list of solutions /
recommendations to the system will be explained to the
customer Actual upgrade for the system will be costed
separately.

Water treatment

This Service provides all of the necessary chemicals
to properly treat each water system for the period
designated.

The inspections will be conducted at agreed upon
intervals and Trane Service First will submit a written
report to the customer after each inspection.

These reports will indicate any corrosion, scaling, and
alga growth in the system.

Refrigerant analysis

This Service includes a thorough analysis for
contamination and solution upgrade.

It is recommended that this analysis be performed every
six months.

Annual cooling tower maintenance

This Service includes the inspection and maintenance of
the cooling tower at least once a year.

This involves checking the motor.

24 hours duty

This service includes emergency calls outside of the
office normal working hours.

This Service is only available with a Maintenance
Contract, where available.

Trane Select Agreements

Trane Select Agreements are programs tailored to
your needs, your business and your application. They
offer four different levels of coverage. From preventive
maintenance plans to fully comprehensive solutions, you
have the option of selecting the coverage that best suits
your requirements.

5 years motor-compressor warranty

This Service will provide a 5 years part and labor
warranty for the motor compressor only.

This Service is only available for units covered by a
5 years Maintenance Contract.

Energy enhancement

With Trane Building Advantage you can now explore cost
effective ways to optimize the energy efficiency of your
existing system and generate immediate savings. Energy
management solutions are not only for new systems
or buildings. Trane Building Advantage offers solutions
designed to unlock energy savings in your existing
system.

RLC-SVX023A

47

Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the leader
in creating and sustaining safe, comfortable and energy efficient environments, Trane offers a broad portfolio of
advanced controls and HVAC systems, comprehensive building services and parts. For more information visit
www.Trane.eu

Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice.

© 2019 Trane All rights reserved

RLC-SVX023A May 2019
New

We are committed to using environmentally
conscious print practices that reduce waste.