Page 1
Installation
Operation
Maintenance
Series R
Helical Rotary Liquid Chillers
© American Standard Inc. 2006
Models RTHD
175-450 ton units (60 Hz)
125-450 ton units (50 Hz)
November 2006 RTHD-SVX01D-EN
Page 2
NOTICE: Warnings and Cautions appear at appropriate sections through-
out this literature. Read these carefully.
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.
CAUTION: Indicates a situation that may result in equipment or propertydamage only accidents.
Important
Environmental Concerns!
Scientific research has shown that certain man-made chemicals
can affect the earth’s naturally occurring stratospheric ozone layer
when released to the atmosphere. In particular, several of the
identified chemicals that may affect the ozone layer are
refrigerants that contain Chlorine, Fluorine and Carbon (CFCs) and
those containing Hydrogen, Chlorine, Fluorine and Carbon
(HCFCs). Not all refrigerants containing these compounds have
the same potential impact to the environment. Trane advocates
the responsible handling of all refrigerants—including industry
replacements for CFCs such as and HCFCs and HFCs.
Responsible Refrigerant Practices!
Trane believes that responsible refrigerant practices are important
to the environment, our customers, and the air conditioning
industry. All technicians who handle refrigerants must be
certified. The Federal Clean Air Act (Section 608) sets forth the
requirements for handling, reclaiming, recovering and recycling of
certain refrigerants and the equipment that is used in these
service procedures. In addition, some states or municipalities
may have additional requirements that must also be adhered to
for responsible management of refrigerants. Know the applicable
laws and follow them.
WARNING
Contains Refrigerant!
System contains oil and refrigerant under high pressure. Recover
refrigerant to relieve pressure before opening the system. See
unit nameplate for refrigerant type. Do not use non-approved
refrigerants, refrigerant substitutes, or refrigerant additives.
Failure to follow proper procedures or the use of non-approved
refrigerants, refrigerant substitutes, or refrigerant additives could
result in death or serious injury or equipment damage.
2 RTHD-SVX01D-EN
Page 3
Table of Contents
General Information..................................................................................... 5
Literature Change History ................................................................................. 5
Unit Identification - Nameplates ........................................................................ 5
Unit Inspection .................................................................................................. 6
Inspection Checklist .......................................................................................... 6
Loose Parts Inventory ....................................................................................... 6
Unit Description................................................................................................. 6
Model Number Coding System......................................................................... 7
Unit Model Number ........................................................................................ 7
Installation Overview....................................................................................... 12
Installation Mechanical.............................................................................. 19
Storage ............................................................................................................ 19
Location Requirements ................................................................................... 19
Moving and Rigging......................................................................................... 21
Lifting Procedure ............................................................................................. 25
Isolation Pads .................................................................................................. 29
Unit Leveling ................................................................................................... 30
Water Piping.................................................................................................... 31
Water Pressure Drop Data .............................................................................. 39
Condenser Water Regulating Valve................................................................. 49
Water Treatment ............................................................................................. 50
Water Pressure Gauges and Thermometers................................................... 51
Water Pressure Relief Valves.......................................................................... 51
Flow Sensing Devices ..................................................................................... 51
Refrigerant Pressure Relief Valve Venting ...................................................... 52
Thermal Insulation ........................................................................................... 54
Installation Electrical ................................................................................. 57
General Recommendations............................................................................. 57
Power Supply Wiring....................................................................................... 57
Compressor Motor Phase Sequencing ........................................................... 59
Correcting Improper Electrical Phase Sequence ............................................. 60
Application Of Solid-State Starters ........................................................................... 63
Module Connections for Interconnecting Wiring ............................................ 66
Interconnecting Wiring (Field Wiring Required)............................................... 66
Operating Principles Mechanical .............................................................. 75
General ............................................................................................................ 75
Refrigeration (Cooling) Cycle ........................................................................... 75
Compressor Description.................................................................................. 78
Oil Management System ................................................................................ 80
Oil Cooler......................................................................................................... 82
Operator Interface Controls ...................................................................... 83
CH530 Communications Overview ................................................................. 83
Controls Interface............................................................................................ 83
DynaView Interface ......................................................................................... 84
Display Screens............................................................................................... 85
Keypad/Display Lockout Feature ..................................................................... 86
Main Screen .................................................................................................... 87
Reports Screen................................................................................................ 92
RTHD-SVX01D-EN 3
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Table of Contents
Settings Screen ............................................................................................... 94
Diagnostic Screen ........................................................................................... 96
TechView .................................................................................................... 97
Minimum PC requirements to install and operate TechView .......................... 98
Unit View......................................................................................................... 99
Status View ................................................................................................... 100
Setpoint View ................................................................................................ 103
Manual Override View................................................................................... 107
Diagnostics View........................................................................................... 109
Software View............................................................................................... 113
Binding View ................................................................................................. 114
Software Download....................................................................................... 115
Unit Start-up............................................................................................. 117
Power Up ...................................................................................................... 117
Power Up to Starting..................................................................................... 117
Stopped to Starting: ...................................................................................... 119
Seasonal Unit Start-Up Procedure................................................................. 121
Unit Shutdown......................................................................................... 125
Normal Shutdown to Stopped....................................................................... 125
Seasonal Unit Shutdown ............................................................................... 126
Periodic Maintenance .............................................................................. 127
Overview ....................................................................................................... 127
Weekly Maintenance and Checks ................................................................. 127
Monthly Maintenance and Checks................................................................ 127
Annual Maintenance...................................................................................... 128
Scheduling Other Maintenance..................................................................... 129
Maintenance Procedures ......................................................................... 133
Cleaning the Condenser ................................................................................ 133
Mechanical Cleaning Procedure .................................................................... 133
Chemical Cleaning Procedure ....................................................................... 136
Cleaning the Evaporato ................................................................................. 137
Compressor Oil ............................................................................................. 137
Oil Sump Level Check .................................................................................... 137
Removing Compressor Oil ............................................................................ 139
Oil Charging Procedure .................................................................................. 139
Replacing the Main Oil Filt e (Hot Filter)......................................................... 140
Replacing the Gas Pump Oil Filter................................................................. 141
Refrigerant Charge ......................................................................................... 141
Refrigerant Charging ..................................................................................... 142
Diagnostics ............................................................................................... 145
Wiring Schematics ................................................................................... 159
Unit Electrical Data ........................................................................................ 159
4 RTHD-SVX01D-EN
Page 5
General Information
Literature Change History
RTHD-SVX01D-EN Additional configurations available for 50 hz units. (Nov.
2006)
RTHD-SVX01C-EN New control panel design. (May 2005)
RTHD-SVX01B-EN New Evap/Cond configuration C2F2F3 and change to
minimum flow rates. (June 2004)
RTHD-SVX01A-EN New manual describes installation, operation, and
maintenance of RTHD units. (May 2003)
Unit Identification - Nameplates
When the unit arrives, compare all nameplate data with ordering, submittal,
and shipping information. A typical unit nameplate is shown in Figure 1.
Figure 1 Typical Unit Nameplate
Unit Nameplates
The RTHD “unit” nameplate is applied to the exterior surface of the starter/
control panel. The “compressor” nameplate is applied to the compressor.
The starter/control panel nameplate is located inside the panel.
The unit nameplate provides the following information:
• Unit model
• Unit Serial Number
• Unit device number.
– Identifies unit electrical requirements
– Lists correct operating charges of HFC-134a and refrigerant oil
– Lists unit test pressures and maximum working pressures.
The starter/control panel nameplate provides the following information:
• Panel model number
• Rated load amps
•Voltage
• Electrical characteristics - starter type, wiring
• Options included.
The compressor nameplate provides the following information:
RTHD-SVX01D-EN 5
Page 6
General Information
• Compressor model descriptor
• Compressor serial number
• Compressor device number
• Motor serial number
• Compressor electrical characteristics
• Refrigerant.
Unit Inspection
When the unit is delivered, verify that it is the correct unit and that it is properly equipped.
Inspect all exterior components for visible damage. Report any apparent damage or material shortage to the carrier and make a “unit damage” notation on
the carrier’s delivery receipt. Specify the extent and type of damage found
and notify the appropriate Trane Sales Office.
Do not proceed with installation of a damaged unit without sales office
approval.
Inspection Checklist
To protect against loss due to damage incurred in transit, complete the following checklist upon receipt of the unit.
• Inspect the individual pieces of the shipment before accepting the unit.
Check for obvious damage to the unit or packing material.
• Inspect the unit for concealed damage as soon as possible after delivery
and before it is stored. Concealed damage must be reported within 10
days after receipt.
• If concealed damage is discovered, stop unpacking the shipment. Do not
remove damaged material from the receiving location. Take photos of the
damage, if possible. The owner must provide reasonable evidence that
the damage did not occur after delivery.
• Notify the Trane sales representative and arrange for repair. Do not repair
the unit, however, until damage is inspected by the transportation representative.
Loose Parts Inventory
Check all items against the shipping list. Water vessel drain plugs, isolation
pads, rigging and electrical diagrams, service literature and the starter/control
panel wire pullbox (required on some starters) are shipped unassembled in
the starter control panel.
Unit Description
The RTHD units are single compressor, helical-rotary type, water-cooled liquid
chillers designed for installation indoors. Each unit is a completely assembled,
hermetic package that is factory-piped, wired, leak-tested, dehydrated,
charged (optional), and tested for proper control operation before shipment.
Figure 2 and Figure 3 show a typical RTHD unit and its components. Water
inlet and outlet openings are covered before shipment. The oil tank is factory
charged with the proper amount of refrigeration oil. The unit can be factory
charged with refrigerant.
6 RTHD-SVX01D-EN
Page 7
General Information
Digit 1-4
Basic product line
RTHD Water-Cooled Series R
Digit 5
Manufacturing Plant
U Water Chiller Business Unit,
Pueblo CO USA
E Epinal Business Unit, Charmes
France
C China Business Unit
Digit 6 - Compressor Frame
B B compressor
C C compressor
DD compressor
E E compressor
Digit 7 - Compressor Capacity
1 Small capacity for frame
2 Large capacity for frame
3 For 50 hz units
Digit 8 - Unit power supply
A 200V/60Hz/3Ph power
C 230V/60Hz/3Ph power
D 380V/60Hz/3Ph power
R 380V/50Hz/3Ph power
T 400V/50Hz/3Ph power
U 415V/50Hz/3Ph power
F 460V/60Hz/3Ph power
H 575V/60Hz/3Ph power
Digit 9 - Design Specials
X None
C Specials denoted elsewhere
S Specials not denoted elsewhere
Digit 10,11 - Design sequence
** First design, etc. increments
when
parts are affected for service
purposes.
Digit 12 - Agency listing
X No agency listing
U C/UL listing
3 CCC- Chinese Compulsor y Code
Digit 13 - Pressure vessel code
A ASME pressure vessel code
L Chinese code
S Special
Digit 14 - Evaporator
B B evaporator
C C evaporator
D D evaporator
E E evaporator
F F evaporator
G G evaporator
Digit 15 - Evaporator Capacity
1 Tube count #1
2 Tube count #2
3 Tube count #3
4 Tube count #4
5 Tube count #5
6 Tube count #6
Digit16 - Evap Tube type
A Enhanced Fin Copper
Digit 17 - Evaporator passes
2 2 Pass evaporator
3 3 Pass evaporator
4 4 Pass evaporator
Digit 18
Evaporator water connection
L Left hand evaporator
connection
R Righ t hand evaporator connection
Digit 19
Evaporator connection type
A Standard grooved pipe
S Special
Digit 20
Evaporator water side pressure
L 150 PSI / 10.5 Bar evaporator
water pressure
H 300 PSI / 21 Bar evaporator
water
pressure
Digit 21 - Condenser
BB Frame
DD Frame
EE Frame
FF Frame
GG Frame
Digit 22 - Condenser Capacity
1 Tube count #1
2 Tube count #2
3 Tube count #3
4 Tube count #4
5 Tube count #5
Digit 23 -Condenser tube type
A Enhanced fin - copper
B Smooth bore - copper
C Smooth bore - 90/10 Cu/Ni
Digit 24 - Condenser passes
22 Pass
Digit 25 -Condenser water connection
L Left hand condenser
connection
R Right hand condenser connection
Digit 26 -Condenser connection type
A Standard grooved pipe
C Marine
S Special
Digit 27
Condenser water side pressure
L 150 PSI / 10.5 Bar condenser
water pressure
H 300 PSI / 21 Bar condens er water
pressure
Digit 28
Condenser Leaving Water Temp
A St andard (<45 deg C)
Digit 29 - Refrigerant specialties
X No refrigerant isolation valves
V Refrigerant isolation valves
Digit 30 - Oil Cooler
X without oil cooler
C with oil cooler
Model Number Coding System
The model numbers for the unit and the compressor are composed of numbers and letters that represent features of the equipment. Shown in the three
tables following are samples of typical unit, compressor, and panel model
numbers, followed by the coding system for each.
Each position, or group of positions, in the model number is used to represent a feature. For example, in the first table, position 08 of the unit model
number, Unit Voltage, contains the letter “F”. An F in this position means that
the unit voltage is 460/60/3.
Unit Model Number
RTHD-SVX01D-EN 7
Page 8
General Information
Digit 31 -Thermal Insulation
X No insulation
Q Factory insulation cold parts
Digit 32 -Sound Attenuator
X No insulation
A Standard attenuator
Digit 33 -Control, Label, and Literature
C Spanish
E English
FFrench
Digit 34 -Safety Devices
X Standard
Digit 35 -Shipping Charge
A Full Factory Charge (R134a)
B Nitrogen
Digit 36 -Shipping Package
A No skid (standard)
B Shrink Wrap
CSkid
D Skid + Shrink Wrap
J Special
Digit 37 -Flow Switch
X Without
A Evap (NEMA-1)
B Evap & Cond (NEMA-1)
C Evap (Vapor/NEMA -4)
D Evap & Cond (Vapor/NEMA -4)
Digit 38 -Factory Performance Test
X Without
C Witness test
D Performance test w/report
S Special
Digit 39 -Starter type
Y Wye-delta closed transition
starter
A Solid State starter
Digit 40, 41, 42
Design RLA (for starter)
*** Selection RLA
Digit 43
Power line connection type
A Terminal block connection for
incoming line(s)
B Mechanical disconnect switch
D Circuit breaker
F High interrupt circuit breaker
H Ground fault circuit breaker
J Ground fault high interrupt circuit
breaker
Digit 44 -Enclosure type
F
NEMA 1 - MRLA207
G NEMA 1 - MRLA277
H
NEMA 1 - MRLA300
J NEMA 1 - MRLA364
K
NEMA 1 - MRLA397
L NEMA 1 - MRLA476
M NEMA 1 - MRLA500
N NEMA 1 - MRLA598
P NEMA 1 - MRLA779
Digit 45 -Under/over voltage
protection
X No under/over voltage
protection
U Under/over voltage protection
Digit 46 -Unit operator interface
A Dyna-View/English
B Dyna-View/French
C Dyna-View/Italian
D Dyna-View/Spanish
E Dyna-View/German
F Dyna-View/Dutch
G Dyna-View/Trad.Chinese
H Dyna-View/Simp.Chinese
J Dyna-View/Japanese
K Dyna-View/Portugese(Brazil)
L Dyna-View/Korean
M Dyna-View/Thai
Digit 47
Remote Interfaces (digital comm)
X No remote digital comm
4 Tracer Comm 4 Interface
5 Tracer Comm 5 LCI-C (LonTalk )
Digit 48
External Chilled Water & Current Limit
Setpoint
X None
4 4-20 mA input
2 2-10 Vdc input
Digit 49
External Base Loading
X None
4 4-20 mA input
2 2-10 Vdc input
Digit 50 -Icemaking
X None
A Icemaking with relay
B Icemaking without relay
Digit 51 -Programmable Relays
X None
R Programmable Relay
Digit 52
Chilled water reset
X No Sensor (return water CHW
reset standard)
T Chilled water reset - outdoor air
temp
Digit 53 - Control Outputs
X None
V Condenser reg. Valve out & %
RLA out
P Condenser Pressure (%HPC) &
% RLA out
D Chiller Delta P & %RLA out
Digit 54 -Refrigerant Monitor Input
X None
A 100 ppm / 4-20 maA
B 1000 ppm / 4-20 mA
C 100 ppm / 2-10 Vdc
D 1000 ppm / 2-10 Vdc
8 RTHD-SVX01D-EN
Page 9
General Information
Compressor Model Number (located on compressor nameplate):
Table 1 Compressor Model Number
Selection Category M/N Digit M/N Code Description of Selection
Compressor Series 1-4 CHHC Semi-Hermetic Heli-Rotor Compressor
Design Control 5 1 Pueblo
Compressor Frame 6 B B Frame
CC Frame
DD Frame
EE Frame
Compressor Capacity 7 1 Smaller capacity (minor)
2 Larger capacity (major)
3 Special 50 Hz capacity
Motor 8 A 200V/60Hz/3
C 230V/60Hz/3
D 380V/60Hz/3
F 460V/60Hz/3 or 400V/50Hz/3
H 575V/60Hz/3
Specials 9 O No Specials
C Specials Denoted Elsewhere
S Uncategorized Special not denoted elsewhere
Design Sequence 10-11 AO 1st Design (Factory Input)
RTHD-SVX01D-EN 9
Page 10
General Information
DynaView or EasyView Interface
Starter/Control
Panel
Evaporator
Liquid Level
Sensor
Gas Pump
Figure 2 Component Location for Typical RTHD Unit
Evaporator
Water Outlet
Oil Separator
Relief Valves
Oil Sump
Condenser
Water Outlet
Condenser
Water Inlet
10 RTHD-SVX01D-EN
Page 11
General Information
el)
Oil Filter (Cold)
Hot Oil Filt er is
hidden from view.
Relief Valves
Condenser
Service Valves
(With Refrigerant Isolation
Valve Option Only)
Oil Separators
Compressor
Discharge Line
Unit Nameplate
(On side of starter/control pan
EXVs
Evaporator
Water Inlet
Oil Sump
(The oil distribution system is located between
the condenser and the evaporator.)
Figure 3 Component Location for Typical RTHD Unit (Back View)
RTHD-SVX01D-EN 11
Page 12
General Information
Installation Overview
For convenience, Table 2 summarizes responsibilities that are typically associated with the RTHD chiller installation process.
Table 2 Installation Responsibility Chart for RTHD Units
Trane-supplied,
Requirement
Rigging Safety chains
Isolation Isolation pads Isolation pads
Electrical Circuit breakers or non-fused
Water piping Flow switches (may be field-
Pressure Relief Relief valves Vent line and flexible connector
Insulation Insulation (optional) Insulation
Trane-installed
disconnects (optional)
Unit-mounted starter Temperature sensor (optional
Trane-supplied,
Field-installed
Circuit breaker or non-fused
disconnect handle
outdoor air)
Flow switches (may be fieldsupplied)
Condenser water regulating valve
controller (optional: may be fieldsupplied)
supplied)
Condenser water regulating valve
controller (optional: may be fieldsupplied)
Field-supplied,
Field-installed
Clevis connectors - Lifting beam
Circuit breakers or fusible disconnects (optional)
Terminal lugs
Ground connection(s)
Jumper bars
BAS wiring (optional)
IPC wiring
Control voltage wiring
High condenser pressure interlock
wiring
Chilled water pump contactor and
wiring
Condenser water pump contactor
and wiring
Optional relays and wiring
Thermometers
Water flow pressure gauges
Isolation and balancing valves water
piping
Vents and drain valves
Pressure relief valves (for water
boxes as required)
Refer to the Installation Mechanical and Installation Electrical sections of this
manual for detailed installation instructions.
• Locate and maintain the loose parts, e.g. isolators, temperature sensors,
• Install the unit on a foundation with flat support surfaces, level within
• Install the unit per the instructions outlined in the Mechanical Installation
12 RTHD-SVX01D-EN
flow sensors or other factory-ordered, field-installed options, for installation, as required. Loose parts are located in the starter/control panel.
1/4” (6.35 mm) and of sufficient strength to support concentrated loading. Place the manufacturer-supplied isolation pad assemblies under the
unit.
Page 13
General Information
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 3 feet (914 mm) 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. Refer to the current engineering bulletin for further details on installation.
• Where specified, supply and install valves in the water piping upstream
and downstream of the evaporator and condenser water boxes, to isolate
the shells for maintenance and to balance/trim the system.
• Supply and install condenser water control valve(s) per Trane Engineering
Bulletin -Water Cooled Series R
• 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 CH530, 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.
• Supply and install drain valves on each water box.
• Supply and install vent cocks on each water box.
• 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.
• If necessary, supply enough HCFC-134 refrigerant and dry nitrogen (75
psig) for pressure testing.
• 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.
Condenser Water Control.
RTHD-SVX01D-EN 13
Page 14
General Information
Table 3 General Data
Unit Designator (corresponds to digits 6, 7, 14, 15, 21, 22 of unit model number)
D1D1E1 D1F1F2 D1G1G1 D1G2G2 D2D2E2 D2F2F3 D2G3G3
General
Refrigerant Type HFC-134a HFC-134a HFC-134a HFC-134a HFC-134a HFC-134a HFC-134a
Refrigerant Charge
(lb (kg))
Oil Charge (gal (l)) 6 (23) 10 (38) 11 (42) 11 (42) 6 (23) 10 (38) 11 (42)
Operating Weight
(lb (kg))
Shipping Weight
(lb (kg))
Length (in(mm))*
Width (in (mm))*
Height (in (mm))*
Water Storage (gal
(l))
Minimum Flow
(gpm (l/s))
Water
Minimum Flow
(gpm (l/s))Brine
Maximum Flow
(gpm (l/s))
Water Storage
(gal (l))
Minimum Flow
(gpm (l/s))Water
Minimum Flow
(gpm (l/s))Brine
Max Flow (gpm
(l/s))
475 (216) 625 (284) 700 (318) 700 (318) 475 (216) 625 (284) 700 (318)
15385 (6978) 17537 (7955) 20500 (9299) 21065 (9555) 15570 (7063) 18220 (8265) 21641
(9816)
14443 (6551) 16187 (7342) 18600 (8437) 19107 (8667) 14562 (6605) 16820 (7630) 19508
(8849)
Overall Dimensions
126 (3189) 144 (3669) 146 (3712) 146 (3712) 126 (3189) 144 (3669) 146 (3712)
68 (1717) 68 (1716) 70 (1771) 70 (1771) 68(1717) 68 (1716) 70 (1771)
76 (1717) 76 (1716) 80 (2033) 80 (2033) 76 (1937) 76 (1936) 80 (2033)
Evaporator
69 (261) 102 (386) 136 (515) 144 (545) 74 (280) 107 (405) 159 (602)
415 (26) for
2-pass
275 (17) for
3-pass
498 (31) for
2-pass
330 (21) for
3-pass
1812 (114)
for 2-pass
1206 (76)
for 3-pass
563 (36)
2-pass
376 (24)
3-pass
676 (43)
2-pass
454 (29)
3-pass
2478 (156)
for 2-pass
1655 (104)
for 3-pass
505 (35)
3 pass
379 (24)
4 pass
606 (38)
3 pass
454 (29)
4 pass
2218
3 pass
1666
4 pass
550 (35) for
3-pass
411 (26) for
4-pass
660 (42) for
3-pass
492 (31) for
4-pass
2413 (152)
for 3-pass
1807 (114)
for 4-pass
450 (28) for
2-pass
300 (20) for
3-pass
541 (34) for
2-pass
357 (23) for
3-pass
1980 (125)
for 2-pass
1320 (83)
for 3-pass
604 (38) for
2-pass
404 (25) for
3-pass
725 (46) for
2-pass
487 (31) for
3-pass
2667 (168)
for 2-pass
1780 (112)
for 3-pass
622 (39) for
3-pass
466 (29) for
4-pass
747 (47) for
3-pass
557 (35) for
4-pass
2732 (172)
for 3-pass
2050 (129)
for 4-pass
Condenser (all are 2-pass)
44 (166) 57 (216) 79 (299) 91 (344) 47 (178) 61 (231) 97 (367)
291 (18) 355 (22) 444 (28) 535 (34) 316 (20) 385 (24) 589 (37)
350 (22) 430 (27) 530 (33) 650 (41) 380 (24) 460 (29) 710 (45)
1280 (81) 1560 (98) 1960 (124) 2360 (149) 1390 (88) 1700 (107) 2600 (164)
All weights ±3%, include standard 150 psig water boxes.
Operating weights include refrigerant, oil, and water charges.
If oil cooler is installed, add 1/4 gal (1 liter) to the oil charge value given for B family units; add 1.0 gal (4 liters) for all other units.
Overall dimensions are based on 3-pass evap/2 pass cond and LH/RH water connections. Refer to submittals for exact job conf.
14 RTHD-SVX01D-EN
Page 15
General Information
Table 4 General Data
Unit Designator (corresponds to digits 6, 7, 14, 15, 21, 22 of unit model number)
D2G2G1 D3D2E2 D3F2F3 D3G2G1 D3G3G3 E3D2E2 E3F2F3 E3G2G1 E3G3G3
General
Refrigerant Type HFC-134a HFC-134a HFC-134a HFC-134a HFC-134a HFC-134a HFC-134a HFC-134a HFC-134a
Rfgt Chg (lb (kg)) 700 (318) 475 (216) 625 (284) 700 (318) 700 (318) 475 (216) 625 (284) 700 (318) 700 (318)
Oil Charge (gal (l)) 11 (42) 6 (23) 10 (38) 11 (42) 11 (42) 6 (23) 10 (38) 11 (42) 11 (42)
Operating Weight
(lb (kg))
Shipping Weight
(lb (kg))
Length (in (mm))
Width (in (mm))
Height (in (mm))
Water Storage
(gal (l))
Minimum Flow
(gpm (l/s))Water
Minimum Flow
(gpm (l/s))Brine
Max Flow
(gpm (l/s))
Water Storage
(gal (l))
Minimum Flow
(gpm (l/s))Water
Min Flow
(gpm (l/s))Brine
Max Flow
(gpm(l/s))
20700
(9389)
18700
(8482)
15570
(7063)
14562
(6605)
18220
(8265)
16820
(7630)
20700
(9389)
18700
(8482)
21641
(9816)
19508
(8849)
15728
(7134)
14720
(6677)
18356
(8326)
16956
(7695)
20800
(9435)
18800
(85528)
21786
(9882)
19653
(8915)
Overall Dimensions
146 (3712) 126 (3189) 144 (3669) 146 (3712) 146 (3712) 126 (3189) 144 (3669) 146 (3712) 146 (3712)
70 (1771) 68 (1717) 68 (1716) 70 (1771) 70 (1771) 68 (1717) 67 (7716) 70 (1771) 70 (1771)
80 (2033) 76 (1937) 76 (1936) 80 (2033) 80 (2033) 76 (1937) 76 (1936) 80 (2033) 80 (2033)
Evaporator
144 (545) 74 (280) 107 (405) 144 (545) 159 (602) 74 (280) 107 (405) 144 (545) 159 (602)
550 (35)
3-pass
411 (26)
4-pass
660 (42)
3-pass
492 (31)
4-pass
2413 (152)
for 3-pass
1807 (114)
for 4-pass
405 (28) for
2-pass
300 (19) for
3-pass
541 (34) for
2-pass
357 (23) for
3-pass
1980 (125)
for 2-pass
1320 (83)
for 3-pass
604 (38)
2-pass
404 (25)
3-pass
725 (46)
2-pass
487 (31)
3-pass
2667 (168)
for 2-pass
1780 (112)
for 3-pass
550 (35)
3-pass
411 (26)
4-pass
660 (42)
3-pass
492 (31)
4-pass
2413 (152)
for 3-pass
1807 (114)
for 4-pass
622 (39)
3-pass
466 (29)
4-pass
747 (47)
3-pass
557 (35)
4-pass
2732 (172)
for 3-pass
2050 (129)
for 4-pass
405 (28)
2-pass
300 (19) 3pass
541 (34) 2pass
357 (23)
3-pass
1980 (125)
2-pass
1320 (83)
for 3-pass
604 (38)
2-pass
404 (25)
3-pass
725 (46)
2-pass
487 (31)
3-pass
2667 (168)
for 2-pass
1780 (112)
for 3-pass
550 (35)
3-pass
411 (26)
4-pass
660 (42)
3-pass
492 (31)
4-pass
2413 (152)
for 3-pass
1807 (114)
for 4-pass
622 (39)
3-pass
466 (29)
4-pass
747 (47)
3-pass
557 (35)
4-pass
2732 (172)
for 3-pass
2050 (129)
for 4-pass
Condenser (all are 2-pass)
79 (299) 47 (178) 61 (231) 79 (299) 97 (367) 47 (178) 61 (231) 79 (299) 97 (367)
444 (28) 316 (20) 355 (22) 444 (28) 589 (37) 316 (20) 355 (22) 444 (28) 589 (37)
530 (33) 380 (24) 460 (29) 530 (33) 710 (45) 380 (24) 460 (29) 530 (33) 710 (45)
1960 (124) 1390 (88) 1700 (107) 1960 (124) 2600 (164) 1390 (88) 1700 (107) 1960 (124) 2600
(164)
All weights ±3%, include standard 150 psig water boxes.
Operating weights include refrigerant, oil, and water charges.
If oil cooler is installed, add 1/4 gal (1 liter) to the oil charge value given for B family units; add 1.0 gal (4 liters) for all other units.
Overall dimensions are based on 3-pass evap/2 pass cond and LH/RH water connections. Refer to submittals for exact job configurations
RTHD-SVX01D-EN 15
Page 16
Table 5 General Data
Refrigerant Type
Refrigerant Charge (lb (kg))
Oil Charge (gal (l))
Operating Weight (lb (kg))
Shipping Weight (lb (kg))
Length (in (mm))*
Width (in (mm))*
Height (in (mm))*
Water Storage (gal (l))
Minimum Flow (gpm (l/s))
Water
Minimum Flow (gpm (l/s))
Brine
Maximum Flow (gpm (l/s))
(all are 2-pass)
Water Storage (gal (l))
Minimum Flow (gpm (l/s))
Water
Minimum Flow (gpm (l/s))
Brine
Maximum Flow (gpm (l/s))
General Information
Unit Designator (corresponds to digits 6, 7, 14, 15, 21, 22 of unit model number)
C1D6E5 C1D5E4 C1E1F1 C2D4E4 C2D3E3
General
HFC-134a HFC-134a HFC-134a HFC-134a HFC-134a
490 (222) 490 (222) 525 (238) 490 (222) 490 (222)
6 (23) 6 (23) 10 (38) 6 (23) 6 (23)
13397 (6077) 13673 (6202) 15818 (7175) 13672 (6202) 15044 (6824)
12780 (5797) 12973 (5885) 14718 (6675) 12972 (5884) 14002 (6351)
Overall Dimensions
126 (3194) 126 (3194) 144 (3650) 126 (3194) 126 (3194)
68 (1717) 68 (1717) 68 (1715) 68 (1717) 68 (1717)
76 (1937) 76 (1937) 76 (1937) 76 (1937) 76 (1937)
Evaporator
45 (170) 52 (197) 82 (311) 52 (197) 78 (295)
293 (18) for
2-pass
196 (12) for
3-pass
352 (22) for
2-pass
233 (15) for
3-pass
1287 (81) for
2-pass
860 (54) for
3-pass
29 (110) 32 (121) 60 (226) 32 (121) 47 (178)
206 (13) 245 (15) 375 (24) 245 (15) 325 (21)
250 (16) 295 (19) 450 (28) 295 (19) 390 (25)
910 (57) 1080 (68) 1650 (104) 1080 (68) 1420 (90)
351 (21) for
2-pass
234 (15) or
3-pass
422 (27) for
2-pass
281 (18) or
3-pass
1542 (97)or
2-pass
1028 (65) or
3-pass
Condenser
450 (28) for
2-pass
300 (19) for
3-pass
487 (31) for
2-pass
357 (23) for
3-pass
1980 (125) for
2-pass
1320 (83) for
3-pass
351 (21) for
2-pass
234 (15) or
3-pass
422 (27) for
2-pass
281 (18) or
3-pass
1542 (97)or
2-pass
1028 (65) or
3-pass
465 (31) for
2-pass
324 (20) for
3-pass
584 (37) for
2-pass
389 (25) for
3-pass
2131 (134) for
2-pass
1417 (89) for
3-pass
All weights ±3%, include standard 150 psig water boxes.
Operating weights include refrigerant, oil, and water charges.
If oil cooler is installed, add 1/4 gal (1 liter) to the oil charge value given for B family units; add 1.0 gal (4 liters) for all other units.
Overall dimensions are based on 3-pass evap/2 pass cond and LH/RH water connections. Refer to submittals for exact job
configurations
16 RTHD-SVX01D-EN
Page 17
Table 6 General Data
Refrigerant Type
Refrigerant Charge (lb (kg))
Oil Charge (gal (l))
Operating Weight (lb (kg))
Shipping Weight (lb (kg))
Length (in (mm))*
Width (in (mm))*
Height (in (mm))*
Water Storage (gal (l))
Minimum Flow (gpm (l/s))
Water
Minimum Flow (gpm (l/s))
Brine
Maximum Flow (gpm (l/s))
(all are 2-pass)
Water Storage (gal (l))
Minimum Flow (gpm (l/s))
Water
Minimum Flow (gpm (l/s))
Brine
Maximum Flow (gpm (l/s))
General Information
Unit Designator (corresponds to digits 6, 7, 14, 15, 21, 22 of unit model number)
C2F2F3 B1B1B1 B1C1D1 B2B2B2 B2C2D2
General
HFC-134a HFC-134a HFC-134a HFC-134a HFC-134a
700 (318) 410 (186) 490 ((222) 410 (186) 490 ((222)
11 (42) 4.5 (17.0) 4.5 (17.0) 4.5 (17.0) 4.5 (17.0)
17560 (7965) 9867 (4476) 10554 (4787) 10019 (4544) 10653 (4832)
16168 (7334) 9292 (4215) 9837 (4462) 9402 (4265) 9953 (4515)
Overall Dimensions
144 (3658) 124 (3160) 143 (3624) 124 (3160) 143 (3624)
68 (1727) 64 (1634) 64 (1634) 64 (1634) 64 (1634)
76 (1930) 73 (1849) 73 (1849) 73 (1849) 72 (1849)
Evaporator
107 (405) 41 (155) 55 (208) 45 (170) 58 (220)
604 (38) for
2-pass
404 (25) for
3-pass
725 (46) for
2-pass
487 (31) for
3-pass
2667 (168)
for 2-pass
1780 (112)
for 3-pass
61 (231) 28 (106) 31 (117) 29 (110) 34 (129)
355 (22) 193 (12) 193 (12) 212 (13) 212 (13)
460 (29) 230 (15) 230 (15) 255 (16) 255 (16)
1700 (107) 850 (54) 850 (54) 935 (59) 935 (59)
253 (16) for
2-pass
168 (11) for
3-pass
303 (19) for
2-pass
200 (13) for
3-pass
1104 (70) for
2-pass
736 (46) for
3-pass
Condenser
320 (18) for
2-pass
213 (12) for
3-pass
346 (22) for
2-pass
254 (16) for
3-pass
1412 (89) for
2-pass
941 (59) for
3-pass
288 (22) for
2-pass
192 (15) for
3-pass
346 (22) for
2-pass
233 (15) for
3-pass
1266 (80) for
2-pass
844 (53) for
3-pass
347 (22) for
2-pass
232 (15) for
3-pass
375 (24) for
2-pass
276 (17) for
3-pass
1531 (97) for
2-pass
1022 (65) for
3-pass
All weights ±3%, include standard 150 psig water boxes.
Operating weights include refrigerant, oil, and water charges.
If oil cooler is installed, add 1/4 gal (1 liter) to the oil charge value given for B family units; add 1.0 gal (4 liters) for all other units.
Overall dimensions are based on 3-pass evap/2 pass cond and LH/RH water connections. Refer to submittals for exact job configurations
RTHD-SVX01D-EN 17
Page 18
General Information
18 RTHD-SVX01D-EN
Page 19
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 71 psig
o
at 70
F (or 46 psig at 50oF), call a qualified service organization and the
appropriate Trane sales office.
NOTE: Pressure will be approximately 20 psig if shipped with the optional
nitrogen charge.
Location Requirements
Noise Considerations
• Refer to Trane Engineering Bulletin -Series R
Installation Guide.
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 CH530.
• Seal all wall penetrations.
Chiller Sound Ratings and
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 Table 7 for unit operating weights.
Once in place, level the chiller within 1/4” (6.35 mm) over its length and
width.
The Trane Company is not responsible for equipment problems resulting from
an improperly designed or constructed foundation.
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.
RTHD-SVX01D-EN 19
Page 20
Installation Mechanical
Clearances
Provide enough space around the unit to allow the installation and maintenance personnel unrestricted access to all service points. Refer to submittal
drawings for the unit dimensions.
Allow adequate clearance for condenser and compressor servicing. A minimum of three feet is recommended for compressor service and to provide
sufficient clearance for the opening of control panel doors. Refer to Figure 4
for minimum clearances required for condenser tube service. In all cases,
local codes will take precedence over these recommendations.
NOTE: Required vertical clearance above the unit is 36” (914.4 mm). There
should be no piping or conduit located over the compressor motor.
If the room configuration requires a variance to the clearance dimensions,
contact your Trane sales office representative.
3'- 0" (914 mm)
Servic e Clearance
3'- 0" (914 mm)
Servic e Clearance
(Opposi te Tube Removal)
Tu be Removal
Clear ance
( Eit he r E nd )
EDE, DDE, CDE, BBB:
108" (27 43 m m)
E FF, DF F, CEF , BCD :
126" (32 00 m m)
EGG, DGG,CGG:
130" (33 02 m m)
36. 5" (927 mm)
Radius
~
Swing
105
26.4" (671 mm)
Radius
3'- 0" (914 m m)
Se rvice Clearance
Figure 4 Recommended Operating and Service Clearances
20 RTHD-SVX01D-EN
3'-0" (914 mm)
Ser vice Cleara nce
Page 21
Installation Mechanical
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 122
Vent the evaporator, condenser and compressor pressure relief valves in
accordance with all local and national codes. Refer to Table 11.
Make provisions in the equipment room to keep the chiller from being
exposed to freezing temperatures (32
Water Drainage
Locate the unit near a large capacity drain for water vessel drain-down during
shutdown or repair. Condensers and evaporators are provided with drain connections. Refer to “Water Piping.” All local and national codes apply.
Access Restrictions
Door clearances for the RTHD units are given in Figure 5. Refer to the unit
submittals for specific “per unit” dimensional information.
Moving and Rigging
The Model RTHD chiller should be moved by lifting at designated lift points
only. Refer to Figure 6 and Table 7 for typical unit lifting and operating
weights. Refer to the rigging diagram that ships with each unit for specific
“per unit” weight data.
o
F (50oC).
o
F/0oC).
WARNING
Heavy Equipment!
Always use lifting equipment with a capacity exceeding unit
lifting weight by an adequate safety factor. (+10%). Follow the
procedures and diagrams in this manual and in the submittal.
Failure to do so can result in death or serious injury.
RTHD-SVX01D-EN 21
Page 22
Installation Mechanical
C
D
B
=C.G.
X
A
Z
Y
Figure 5 Unit Weights and Dimensions for Rigging
Table 7 Unit Weights (lb (kg))
Location (points)
Unit Designator *
E3G3G3 5339
E3G2G1 5158
E3F2F3 4781
E3D2E2 3796
*Unit Designator (corresponds to digits 6, 7, 14, 15, 21, 22 of unit model number)
ABCD
(2422)
(2340)
(2169)
(1722)
4455
(2021)
4304
(1952)
3582
(1625)
2834
(1285)
4374
(1984)
4226
(1917)
3750
(1701)
3300
(1497)
22 RTHD-SVX01D-EN
5486
(2488)
5300
(2404)
4851
(2200)
4789
(2172)
Page 23
Installation Mechanical
Table 7 Unit Weights (lb (kg))
Location (points)
Unit Designator *
D3G3G3 5320
D3G2G1 5085
D3F2F3 4737
D3D2E2 3754
D2G3G3 5320
D2 G2G1 5085
D2F2F3 4737
D2D2E2 3754
D1G1G1 4981
D1G2G2 5216
D1F1F2 4526
D1D1E1 3728
C2F2F3 4649
C2D3E3 3612
C2D4E4 3374
C1E1F1 4205
C1D5E4 3375
C1D6E5 3330
B2C2D2 3162
B2B2B2 2522
B1C1D1 3136
B1B1B1 2495
ABCD
(2413)
(2307)
(2149)
(1703)
(2413)
(2307)
(2149)
(1703)
(2259)
(2366)
(2053)
(1691)
2109
(1638)
(1530)
(1907)
(1531)
(1510)
(1510)
(1144)
(1422)
(1132)
4451
(2019)
4255
(1930)
3563
(1616)
2818
(1278)
4451
(2019)
4255
(1930)
3563
(1616)
2818
(1278)
4148
(1882)
4344
(1970)
3452
(1566)
2758
(1251)
3496
1586
2738
(1242)
2479
(1124)
3046
(1382)
2479
(1124)
2430
(1102)
2297
(1042)
1996
(905)
2264
(1027)
1969
(893)
4327
(1963)
4136
(1876)
3722
(1688)
3269
(1483)
4327
(1963)
4136
(1876)
3722
(2176)
3269
(1483)
4041
(1833)
4231
(1919)
3615
(1640)
3236
(1468)
4707
2135
3148
(1428)
2876
(1305)
3196
(1450)
2876
(1305)
2825
(1281)
1767
(802)
1926
(874)
1739
(789)
1901
(862)
5140
(2331)
5171
(2346)
4797
(2176)
4720
(2141)
5140
(2331)
5171
(2346)
4797
(2176)
4720
(2141)
5076
(2302)
5316
(2411)
4594
(2084)
4694
(2129)
4707
2135
4503
(2043)
4243
(1925)
4271
(1937)
4243
(1925)
4195
(1903)
2726
(1237)
2958
(1342)
2698
(1224)
2928
(1328)
RTHD-SVX01D-EN 23
*Unit Designator (corresponds to digits 6, 7, 14, 15, 21, 22 of unit model number)
Page 24
Installation Mechanical
Table 8 Center of Gravity (in (mm))
Unit Configuration* X Y Z
E3G3G3 30.8 63.81 37.62
(782.32) (1621) (956)
E3G2G1 30.8 63.55 38.70
(782.32) (1614) (983)
E3F2F3 27.64 63.46 38.33
(702.056 (1612) (974)
E3D2E2 25.9 60.05 40.5
(658) (1525) (1029)
D3G3G3 30.85 63.48 37.44
(784) (1612) (951)
D3G2G1 30.58 68.56 37.79
(777) (1741) (960)
D3F2F3 27.7 63.4 38.14
(704) (1610) (969)
D3D2E2 25.97 59.95 40.31
(660) (1523) (1024)
D2G3G3 30.85 63.48 37.44
(784) (1612) (951)
D2G2G1 30.58 68.56 37.79
(777) (1741) (960)
D2F2F3 27.7 63.4 38.14
(704) (1610) (969)
D2D2E2 25.97 59.95 40.31
(660) (1523) (1024)
D1G1G1 30.58 68.56 37.79
(777) 1741) (960)
D1G2G2 30.77 63.55 37.72
(782) (1614) (958)
D1F1F2 27.92 63.47 38.7
(709) (1612) (9833)
D1D1E1 25.91 60 40.47
(658) (1524) (1028)
C2F2F3 27.92 63.47 38.7
(709) (1612) (9833)
C2D3E3 26.13 59.74 40.08
(664) (1517) (1018)
C2D4E4 26.13 59.74 40.08
(664) (1517) (1018)
C1E1F1 26.36 63.49 40.95
(670) (1613) (1040)
C1D5E4 26.13 59.74 40.08
(664) (1517) (1018)
C1D6E5 26.13 59.74 40.08
(664) (1517) (1018)
B2C2D2 22.4 58.29 33.51
(569) (1481) (851)
B2B2B2 22.88 58.11 35.43
(581) (1476) (900)
B1C1D1 22.32 58.23 33.65
(567) (1479) (855)
B1B1B1 22.84 58.13 35.59
(580) (1477) (904)
Designator corresponds to digits 6, 7, 14, 15, 21, 22 of model number
24 RTHD-SVX01D-EN
Page 25
Installation Mechanical
Lifting Procedure
CAUTION
Equipment Damage!
Never use a forklift to move the unit. The skid is not designed to
support the unit at any one point and using a forklift to move the
equipment may cause unit damage. Always position the lifting
beam so that cables do not contact the unit. Failure to do so may
result in unit damage.
NOTE: If absolutely necessary, the chiller can be pushed or pulled across a
smooth surface if it is bolted to wood shipping mounts.
WARNING
Shipping Mounts!
Do not use the threaded holes in the compressor to lift or assist in
lifting the unit. They are not intended for that purpose and could
create a dangerous situation. Do not remove the wood mounts
until the unit is in its final location. Removal of wood shipping
mounts prior to unit final locating could result in death or serious
injury or equipment damage.
1. When the unit is at its final location, remove the shipping bolts that
secure the unit to the wood base mounts.
2. Rig the unit properly and lift from above or jack the unit (alternate moving
method). Use the points shown on the rigging diagram that ships with
the unit as shown in Figure 6. Remove the base mounts.
3. Install clevis connectors in lifting holes provided on the unit. Attach lifting
chains or cables to clevis connectors as shown in Figure 6. Each cable
alone must be strong enough to lift the chiller.
RTHD-SVX01D-EN 25
Page 26
Installation Mechanical
Table 9 Rigging
Unit
Configuration*
E3G3G3 3658 3353 1621 20 661 610
E3G2G1 3658 3353 1621 20 661 610
E3F2F3 3658 3353 1612 29 615 610
E3D2E2 3048 2743 1525 116 612 610
D3G3G3 3658 3353 1612 99 654 610
D3G2G1 3658 3353 1612 99 654 610
D3F2F3 3658 3353 1610 101 617 610
D3D2E2 3048 2743 1523 188 614 610
D2G3G3 3658 3353 1612 99 654 610
D2G2G1 3658 3353 1612 99 654 610
D2F2F3 3658 3353 1610 101 617 610
D2D2E2 3048 2743 1523 188 614 610
D1G2G2 3658 3353 1614 97 661 610
D1G1G1 3658 3353 1612 99 654 610
D1F1F2 3658 3353 1612 99 622 610
D1D1E1 3048 2743 1524 187 612 610
C2F2F3 3658 3353 1610 101 617 610
C2D3E3 3048 2743 1517 225 618 610
C2D4E4 3048 2743 1523 219 584 610
Dimension (mm (in))
ABCDE F
(144.02) (132.01) (63.82) (0.79) (26.02) (24.02)
(144.02) (132.01) (63.82) (0.79) (26.02) (24.02)
(144.02) (132.01) (63.46) (1.14) (24.21) (24.02)
(120.00) (107.99) (60.04) (4.57) (24.09) (24.02)
(144.02) (132.01) (63.46) (3.90) (25.75) (24.02)
(144.02) (132.01) (63.46) (3.90) (25.75) (24.02)
(144.02) (132.01) (63.39) (3.98) (24.29) (24.02)
(120.00) (107.99) (59.96) (7.40) (24.17) (24.02)
(144.02) (132.01) (63.46) (3.90) (25.75) (24.02)
(144.02) (132.01) (63.46) (3.90) (25.75) (24.02)
(144.02) (132.01) (63.39) (3.98) (24.29) (24.02)
(120.00) (107.99) (59.96) (7.40) (24.17) (24.02)
(144.02) (132.01) (63.54) (3.82) (26.02) (24.02)
(144.02) (132.01) (63.46) (3.90) (25.75) (24.02)
(144.02) (132.01) (63.46) (3.90) (24.49) (24.02)
(120.00) (107.99) 60.00) (7.36) (24.09) (24.02)
(144.02) (132.01) 63.39) (3.98) (24.29) (24.02)
(120.00) (107.99) (59.72) (8.86) (24.33) (24.02)
(120.00) (107.99) (59.96) (8.62) (22.99) (24.02)
26 RTHD-SVX01D-EN
*Designator corresponds to digits 6, 7, 14, 15, 21, 22 of model number
Page 27
Installation Mechanical
Table 9 Rigging
Unit
Configuration*
C1E1F1 3658 3353 1613 129 624 610
C1D5E4 3048 2743 1523 219 584 610
C1D6E5 3048 2743 1524 218 582 610
B2C2D2 3658 3353 1481 93 523 610
B2B2B2 3048 2743 1476 98 535 610
B1C1D1 3658 3353 1479 95 521 610
B1B1B1 3048 2743 1447 97 534 610
*Designator corresponds to digits 6, 7, 14, 15, 21, 22 of model number
Dimension (mm (in))
ABCDE F
(144.02) (132.01) (63.50) (5.08) (24.57) (24.02)
(120.00) (107.99) (59.96) (8.62) (22.99) (24.02)
(120.00) (107.99) (60.00) (8.58) (22.91) (24.02)
(144.02) (132.01) (58.31) (3.66) (20.59) (24.02)
(120.00) (107.99) (58.11) (3.86) (21.06) (24.02)
(144.02) (132.01) (58.23) (3.74) (20.51) (24.02)
(120.00) (107.99) (56.97) (3.82) (21.02) (24.02)
RTHD-SVX01D-EN 27
Page 28
Installation Mechanical
NOTES:
1. LIFTING CABLES(C HAIN S)WILL NOT BE THE SAMEL EN GTH.
ADJUSTT OKEEP UNITL EVEL WHILEL IFTING.
2. ATTA CH ANTI- ROLLI NG CABL E (CH AIN) A S SHOWN WITHO UT T ENSION.
NOT AS A LIFTING CABLE,BUT TO PREVENTU NIT FROM ROLLING.
3. DO NO T FORK LIFT UNI T.
4. WEIGHT S ARE T YPICAL FOR UNIT S WI TH R-13 4a CHARG E.
5. IFU NIT IS DISASSEMBLED, SEE SERVICEBULLETIN
FORLIFTINGANDRIGGINGOFCOMPONENTS.
WARNING: DO NOT USE CABLES(CHAINS) OR SLINGSEXCEPT AS SHOWN.
OTHER LIFTING ARRANGEMENTSMAY CAUSE EQUIPMENTD AMAG E OR
SERIOUS P ERSONAL I NJURY.
F(MIN)
E
ANTI-ROLLING
CABLE
ANTI-ROLLI NGCABLE
A
B
C
D
EYELET OR M16INTERNALT HREAD
ANTI-ROLLINGCABLE
COND EVAP
Figure 6 Lifting the Unit
LIFTING HOLES
44,5 MM TYP
n
STARTER C ONTROLS
UNIT M ODEL NUMBER LOCATI ON
EVAP
4. Attach cables to lifting beam. Total lifting weight, lifting weight distribution
and required lifting beam dimensions are shown in the rigging diagram
shipped with each unit and in Figure 6. The lifting beam crossbar must be
positioned so the lifting cables do not contact unit piping or electrical
panel enclosure.
WARNING
Anti- rotation Strap!
Connect an anti-rotation strap between the lifting beam and
compressor before lifting unit. Failure to do so may result in death
or serious injury should a lifting cable fail.
COND
5. Connect an anti-rotation strap or cable loosely between the lifting beam
NOTE: The anti-rotation strap is not a lifting chain, but a safety device to
ensure that the unit cannot tilt during lifting.
28 RTHD-SVX01D-EN
and the threaded coupling or eyelet provided at the top of the compressor. Use an eyebolt or clevis to secure the strap at the coupling or eyelet.
Page 29
Installation Mechanical
Alternate Moving Method
6. If it is not possible to rig from above as shown in the figures, the unit may
also be moved by jacking each end high enough to move an equipment
dolly under each tube sheet support. Once securely mounted on the dollies, the unit may be rolled into position.
Isolation Pads
The elastomeric pads shipped (as standard) are adequate for most installations. For additional details on isolation practices, refer to
Trane Engineering Bulletin -Series R
tion Guide., or consult an acoustical engineer for sound-sensitive installa-
tions.
7. During final positioning of the unit, place the isolation pads under the
evaporator and condenser tube sheet supports as shown in Figure 7.
Level the unit as described in the next main paragraph.
NOTE: Durometer values for isolator pads are a measure of resilience. See
Figure 7.
Note: Level unit to 1/4” (6.35 mm) across
width and length
Chiller Sound Ratings and Installa-
B
A (hidden leg)
Durometer: 50 +/-5
0.31
Figure 7 Isolator Pad Placement
Typical Elastomeric
Isolation Pad
D
C
Durometer: 40 +/-5 Durometer: 55 +/-10
Pads extend the full
width of legs
0.31
0.31
RTHD-SVX01D-EN 29
Page 30
Oil Separator
Installation Mechanical
8. The unit is shipped with four spacers (only three on B family) on the compressor mount that protect the compressor isolation pads during shipping
and in handling. Remove these spacers (Figure 8) before the unit is operated.
9. Remove the shipping brackets from the bottom sides of the oil separator(s) (see Figure 8).
NOTE: Once shipping bracket(s) is removed, the oil separator is only
supported by the discharge line.
Compressor
Housing
M20 bolt
Shipping Bracket
Figure 8 Oil Separator with Shipping Bracket and Compressor Shipping Spacer
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 top surface of the
evaporator shell.
2. If there is insufficient surface available on the top of the evaporator shell,
attach a magnetic level to the bottom of the shell to level the unit. The
unit should be level to within 1/4” (6.35 mm) over its length.
3. Place the level on the evaporator shell tube sheet support to check sideto-side (front-to-back) level. Adjust to within 1/4” (6.35 mm) of level frontto-back.
NOTE: The evaporator MUST be level for optimum heat transfer and unit
performance.
4. Use full-length shims to level the unit.
Remove 4 Shipping
Spacers (only 3 on B
family)
30 RTHD-SVX01D-EN
Page 31
Installation Mechanical
Water Piping
Piping Connections
CAUTION
Equipment Damage!
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.
Use grooved pipe connectors for all water piping connections. Evaporator and
condenser water inlet and outlet sizes and locations are shown by the unit
submittals and in Figure 9 through Figure 14. The designation in the tables
corresponds to the compressor frame code followed by the evaporator shell
code followed by the condenser shell code as given in the unit model number, digits 6, 7, 14, 15, 21 and 22. Table 10 gives additional water connection
information.
Reversing Water Boxes
All water boxes may be reversed end-for-end. Do not rotate water boxes.
Remove the sensors from the wells before removing the water box. Complete the water box switch and replace the sensors. See Figure 9 through Fig-
ure 14 for correct orientation of the water inlet and outlet.
If the water boxes are reversed, be sure to properly rewire the water temperature sensors in the control panel.
NOTE: Be certain to replace water boxes right-side-up to maintain proper
baffle orientation. Use new o-rings.
RTHD-SVX01D-EN 31
Page 32
Installation Mechanical
75.0 [1905 mm]
OUT
28.59 [726mm]
EVAPORATOR
8. 38 [ 21 3 mm ]
8. 38 [ 21 3 mm ]
27.34 [694mm]
15.09 [383 mm]
8.94 [227 mm]
Standard 3Pass
107.66 [2734 mm]
6.87 [174 mm]
2 Pass Evap Connection Configuration
(left or right hand) Depending on Water Inlet
IN
13.84 [351 mm]
4.9 7 [ 126 m m] fo r 150 ps i
5.4 7 [ 139 m m] fo r 300 ps i
EVAPORATOR
10.23[260mm]
CONDENSER
70.30 [1786 mm]
OUT
23.50[597mm]
9.5 0 [ 241 m m]
13.35 [339 mm]
EVAP
IN
64.34 [1634 mm]
COND
IN
11.50[292mm]
13.50 [343 mm]
97.51 [2477 mm]
8.00 [203 mm]f or150 psi
8.50 [216 mm]f or300 psi
OIL S UM P
0.08 [2 mm]
Figure 9 Condenser and Evaporator Water Connections -BBB
32 RTHD-SVX01D-EN
Page 33
Installation Mechanical
(left or right hand) Depending on Water Inlet
75.0 [1905 mm]
8. 38 [ 21 3 m m]
OUT
28.59[726 mm]
27.34 [694 mm]
15.09 [383 mm]
8.94 [227 mm]
EV APO RAT OR
7.87 [174 mm]
St anda rd 3 Pa ss
125.91 [3198 mm]
IN
4.97 [126 mm] for 150 psi
8.38 [213 mm]
13.84[351mm]
5.47 [139 mm] for 300 psi
EV APO RAT OR
2 Pass Evap Connection Configuration
0.01[0 mm]
CONDENS ER
9.50 [241 mm]
70. 80 [ 1798 m m]
IN
13.35[339mm]
118. 00 [ 2997 m m]
EVAP
OIL SUM P
Figure 10 Condenser and Evaporator Water Connections -BCD
RTHD-SVX01D-EN 33
COND
IN
OUT
23.50 [597 mm]
64.34 [1634 mm]
13.50 [343mm]
11.50[292mm]
8.00 [203 mm]f or150 psi
8.50 [216 mm]f or300 psi
7.91 [201mm]
Page 34
Installation Mechanical
77.4 [1966 mm]
9.06 [230 mm]
30.1 3 [76 5 mm ]
OUT
St anda rd 3 Pa ss
EVAPORATOR
9. 06 [2 30 mm]
125. 91 [31 98 mm]
6.00 [153 mm] for 150 psi
IN
14.8 8 [37 8 m m]
6.50 [165 mm] for 300 psi
29.63 [753 mm]
EVAPORATOR
15.38 [391 mm]
9.42 [239 mm]
7.67 [195 mm]
2 Pass Evap Connection Configuration
(left or right hand) Depending on Water Inlet
3.07 [78 mm]
OIL SUM P
118. 00 [299 7 m m]
14.50 [ 368 mm]
73.44 [1865 mm]
OUT
25.8 8 [65 7 m m]
5.29 [134 mm]
IN
COND EVAP
IN
67.5 4 [17 15 mm]
14.13 [359 mm]
12.49[317mm]
CONDENSER
4. 84 [1 23 mm]
8. 00 [2 03 mm] for 1 50 ps i
8. 50 [2 16 mm] for 3 00 ps i
Figure 11 Condenser and Evaporator Water Connections - CEF
34 RTHD-SVX01D-EN
Page 35
Installation Mechanical
77.4 [ 196 6 mm]
OUT
30.13 [765 mm]
EVAPORATOR
8. 84 [2 25 m m]
9. 06 [2 30 m m]
Standard 3 Pass
107. 66 [273 4 mm ]
IN
14.88[378mm]
29.63 [753 mm]
15.38 [391 mm]
9.50 [241 mm]
7.67 [195 mm]
2 Pass Evap Connection Configuration
(left or right hand) Depending on Water Inlet
6. 00 [1 53 m m] fo r 15 0 p si
6. 50 [1 66 m m] fo r 30 0 p si
EVAPORATOR
7.59 [193 mm]
Figure 12 Condenser and Evaporator Water Connections - CDE/DDE/EDE
RTHD-SVX01D-EN 35
73. 44 [18 65 m m]
IN
IN
OUT
25.88[657mm]
5. 29 [134 mm]
14.5 0 [36 8 mm ]
EVAP
COND
67. 58 [17 17 m m]
12.49[317mm]
14.1 3 [35 9 m m]
97. 50 [24 77 mm]
8.0 0 [20 3 mm] for 1 50 ps i
8.5 0 [21 6 mm] for 3 00 ps i
OIL S UMP
CONDENSER
2.56 [65 m m]
Page 36
Installation Mechanical
77.0 [1956m m]
9.38 [238 mm]
OU T
EVA POR ATO R
9. 16 [2 33 mm]
28.43 [722 mm]
Standard 3 Pass
125. 91 [319 8 m m]
IN
11.4 3 [29 0 m m]
6. 15 [1 56 mm] for 1 50 ps i
27.30 [693 mm]
12.55 [319 mm]
10.88 [276 mm]
8.71 [221 mm]
2 Pass Evap Connection Configuration
(left or right hand) Depending on Water Inlet
EVAPORATOR
6. 65 [1 69 mm] for 3 00 ps i
OIL S UMP
Figure 13 Condenser and Evaporator Water Connections - DFF/EFF/CFF
36 RTHD-SVX01D-EN
73. 52 [18 67 m m]
IN
OUT
25.88[657mm]
3.59 [91 mm]
16.20[411mm]
CONDENSER
EVAP
IN
COND
14.13[359mm]
118.00 [2997 mm]
67.54[1716 mm]
4.87 [124 mm] 3.0 4 [77 m m]
12.49[317mm]
8.0 0 [20 3 mm ] for 150 ps i
8.5 0 [21 6 mm ] for 300 ps i
Page 37
Installation Mechanical
9.35 [238 mm]
81.0 [205 7 mm]
]m
]mm
m
1
2
3[
4
1
4
3[
6.
2
8
1
3.
2
1
]m
m
2
13
[
92
.
21
2 Pass Evap Connection Configuration
(left or right hand) Depending on Water Inlet
EVAPORATOR
OUT
Standard 4 Pass
125.91 [3198 mm]
IN
7. 62 [ 194 mm ] fo r 30 0 ps i
7. 25 [ 184 mm ] fo r 15 0 ps i
]mm 928[ 46.23
EVAP OR ATOR
0.67 [17 mm]
11.39 [289 mm]
10. 88 [27 6 mm ]
33.89 [861 mm]
OILSUMP
77.29 [1963 mm]
18.63 [473mm]
22.50 [571mm]
1.18 [30 mm]
CONDENSER
EVAP
OUT
IN
COND
IN
OUT
129.80 [3297 mm]
69.72 [1771 mm]
Figure 14 Condenser and Evaporator Water Connections - DGG/EGG
RTHD-SVX01D-EN 37
3.22 [82 mm]
29.02[737mm]
14.73 [374mm]
14. 70 [37 3 mm ]
9.88 [251 mm]f or300 psi
9.13 [232 mm]f or150 psi
Page 38
Installation Mechanical
Table 10 Evaporator and Condenser Data
Compress
or Frame
Code
(Digit 6,7
of Model
No.)
E3 D2 26.5 8 8 - E2 22.0 8
D3 D2 26.5 8 8 - E2 22.0 8
D2 D2 26.5 8 8 - E2 22.0 8
D1 D1 26.5 8 8 - E1 22.0 8
C2 D3 26.5 8 8 - E3 22.0 8
C1 D6 26.5 8 8 - E5 22.0 8
B2 C2 23.0 - 6 - D2 18.75 6
B1 C1 23.0 - 6 - D1 18.75 6
Evap Shell
Code (Digits
14, 15 of
Model No.)
F2 29.0 8 8 - E2 22.0 8
G2 33.5 - 10 8 G1 25.75 8
G3 33.5 - 10 8 G3 25.75 8
F2 29.0 10 8 - F3 22.0 8
G2 33.5 - 10 8 G1 25.75 8
G3 33.5 - 10 8 G3 25.75 8
F2 29.0 10 8 - F3 22.0 8
G2 33.5 - 10 8 G1 25.75 8
G3 33.5 - 10 8 G3 25.75 8
F1 29.0 10 8 - F2 22.0 8
G1 33.5 - 10 8 G1 25.75 8
G2 33.5 - 10 8 G2 25.75 8
D4 26.5 8 8 E4 22.0 8
F2 29.0 10 8 - F3 22.0 8
D5 26.5 8 8 - E4 22.0 8
E1 33.5 8 8 - F1 22.0 8
B2 23.0 - 6 - B2 18.75 6
B1 23.0 - 6 - B1 18.75 6
Evap.
Shell
Diameter
(in)
Nominal Connector
size (NPS)*
2Pass3-Pass4-Pass 2-Pass
Cond Shell
Code
(Digits 21,22 of
Model No.)
Cond.
Shell
Diameter
(in)
Nom.
Conn.
Size
(NPS)*
Metric Conversion is:
6 NPS = 150 mm nominal
8 NPS = 200 mm nominal
10 NPS = 250 mm nominal
38 RTHD-SVX01D-EN
Page 39
Installation Mechanical
Water Pressure Drop Data
Evaporator Pressure Drop
G Frame - 3 Pass
50
45
40
35
O)
2
30
25
20
Delt-P (Ft H
15
10
5
0
0 500 1000 1500 2000 2500 3000
Flow (GPM)
G2
G1
Evaporator Pressure Drop
G Frame - 4 Pass
70
G2
G1
O)
2
60
50
40
G3
G3
30
Delt-P (Ft H
20
10
0
0 500 1000 1500 2000
RTHD-SVX01D-EN 39
Flow (GPM)
Page 40
Installation Mechanical
Evaporator Pressure Drop
F Frame - 2 Pass
35
30
25
O)
2
20
15
Delt-P (Ft H
10
5
0
0 500 1000 1500 2000 2500 3000
Flow (GPM)
F1
F2
Evaporator Pressure Drop
F Frame - 3 Pass
50
45
40
35
O)
2
30
25
20
Delt-P (Ft H
15
10
5
0
0 500 1000 1500 2000
Flow (GPM)
F1
F2
40 RTHD-SVX01D-EN
Page 41
Installation Mechanical
Evaporator Pressure Drop
E Frame - 2 Pass
40
35
30
O)
2
25
20
15
Delt-P (Ft H
10
5
0
0 500 1000 1500 2000
Flow (GPM)
Evaporator Pressure Drop
E Frame - 3 Pass
50
45
40
35
O)
2
30
25
20
Delt-P (Ft H
15
10
5
0
0 200 400 600 800 1000 1200 1400
Flow (GPM)
E1
E1
RTHD-SVX01D-EN 41
Page 42
Installation Mechanical
Evaporator Pressure Drop
D Frame - 2 Pass
40
35
D4 & D5
D6
O)
2
30
25
20
15
Delt-P (Ft H
10
5
0
0 500 1000 1500 2000 2500
Flow (GPM)
D1
D2
D3
Evaporator Pressure Drop
D Frame - 3 Pass
45
D4 & D5
D6
O)
2
40
35
30
25
20
15
Delt-P (Ft H
10
5
0
0 200 400 600 800 1000 1200 1400
Flow (GPM)
D1
D2
D3
42 RTHD-SVX01D-EN
Page 43
Installation Mechanical
Evaporator Pressure Drop
C Frame - 2 Pass
35
30
25
O)
2
20
15
Delt-P (Ft H
10
5
0
0 500 1000 1500
Flow (GPM)
C1
Evaporator Pressure Drop
C Frame - 3 Pass
50
45
40
35
O)
2
30
25
20
Delt-P (Ft H
15
10
5
0
0 200 400 600 800 1000
Flow (GPM)
C1
C2
C2
RTHD-SVX01D-EN 43
Page 44
Installation Mechanical
Evaporator Pressure Drop
B Frame - 3 Pass
45
40
35
O)
30
2
25
20
15
Delt-P (Ft H
10
5
0
0 200 400 600 800 1000
Flow (GPM)
B1
B2
Evaporator Pressure Drop
B Frame - 2 Pass
30
25
O)
20
2
15
10
Delt-P (Ft H
5
0
0 200 400 600 800 1000 1200 1400
Flow (GPM)
B1
B2
44 RTHD-SVX01D-EN
Page 45
Installation Mechanical
Condenser Pressure Drop
G Frame - 2 Pass
60
50
O)
40
2
30
20
Delt-P (Ft H
10
0
0 500 1000 1500 2000 2500 3000
Flow (GPM)
G1
G2
Condenser Pressure Drop
F Frame - 2 Pass
45
40
35
O)
30
2
25
20
15
Delt-P (Ft H
10
5
0
0 500 1000 1500 2000
Flow (GPM)
F2
G3
F1 & F3
RTHD-SVX01D-EN 45
Page 46
Installation Mechanical
Condenser Pressure Drop
E Frame - 2 Pass
40
35
30
O)
2
25
20
15
Delt-P (Ft H
10
5
0
0 500 1000 1500
Flow (GPM)
E5
E4
E1
E2
E3
Condenser Pressure Drop
D Frame - 2 Pass
45
40
35
O)
30
2
25
20
15
Delt-P (Ft H
10
5
0
0 200 400 600 800 1000
Flow (GPM)
D1
D2
46 RTHD-SVX01D-EN
Page 47
Installation Mechanical
Condenser Pressure Drop
B Frame - 2 Pass
40
35
30
O)
2
25
20
15
Delt-P (Ft H
10
5
0
0 200 400 600 800 1000
Flow (GPM)
Making Grooved Pipe Connections
CAUTION
Equipment Damage!
B1
B2
To prevent damage to water piping, do not overtighten
connections. To prevent equipment damage, bypass the unit if
using an acidic flushing agent.
NOTE: Make sure that all piping is flushed and cleaned prior to starting the
unit.
Vents and Drains
Install pipe plugs in evaporator and condenser water box 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 with a shutoff valve and connect a hose to it.
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.
RTHD-SVX01D-EN 47
Page 48
Installation Mechanical
“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
• Cleanout tees
• Pipe strainer
• Flow switch
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
• Cleanout tees
• Balancing valve
• Pressure relief valve
CAUTION
Evaporator Damage!
To prevent evaporator damage, do not exceed 150 psig (10.3 bar)
evaporator water pressure for standard water boxes. Maximum
pressure for high pressure water boxes is 300 psig (20.7 bar).
Refer to digit 14 of the Model No. To prevent tube damage, install
a strainer in the evaporator water inlet piping. To prevent tube
corrosion, ensure that the initial water fill has a balanced pH.
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
48 RTHD-SVX01D-EN
Page 49
Installation Mechanical
• Pipe unions
• Vibration eliminators (rubber boots)
• Shutoff (isolation) valves. One per each pass
• Thermometers
• Cleanout 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 - one per each pass
• Thermometers
• Cleanout tees
• Balancing valve
• Pressure relief valve.
CAUTION
Condenser Damage!
To prevent condenser damage, do not exceed 150 psig (10.3 bar)
water pressure for standard water boxes. Maximum pressure for
high pressure water boxes is 300 psig (20.7 bar). Refer to digit 18
of the Model No. To prevent tube damage, install a strainer in
condenser water inlet piping. To prevent tube corrosion, ensure
that the initial water fill has a balanced pH.
Condenser Water Regulating Valve
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. The condenser water flow device is typically a
large butterfly type (6" or 8") automatic valve for 200 to 400 Ton chillers.
The following guidelines must be met in order to ensure adequate oil circulation throughout the system.
• The RTHD must maintain a 23 psid system pressure differential at all load
conditions in order to ensure adequate oil circulation.
• The entering condenser water temperature must be above 55°F (12.8°C)
or between 45°F (7.2°C) and 55°F (12.8°C) with a 1°F temperature rise per
minute to 55°F (12.8°C).
RTHD-SVX01D-EN 49
Page 50
Installation Mechanical
• Condenser leaving water temperature must be 17°F degrees higher than
evaporator leaving water temperature within 2 minutes of startup. A 25°F
diferential must be maintained thereafter.
If the above guidelines cannot be met, then some form of tower water control must be used.
Condenser Water Regulating Valve Adjustment
A separate TechView 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 .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 .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 ( )
Water Treatment
CAUTION
Proper Water Treatment!
The use of untreated or improperly treated water in a RTHD 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 Trane Company assumes no responsibility for
equipment failures which result from untreated or improperly
treated water, or saline or brackish water.
Using untreated or improperly treated water in these units may result in inefficient operation and possible tube damage. Consult a qualified water treatment specialist to determine whether treatment is needed.
50 RTHD-SVX01D-EN
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Installation Mechanical
r
Water Pressure Gauges and Thermometers
Install field-supplied thermometers and pressure gauges (with manifolds,
whenever practical) as shown in Figure 15. 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 opposite-end
water connections.
To read manifolded water pressure gauges, open one valve and close the
other (depending upon the reading desired). This eliminates errors resulting
from differently calibrated gauges installed at unmatched elevations.
Flow Switch
Shutoff
Isolation
Valves
Evap
Water
Flow
Pressure Differential
Gauge
Valves
Flow Switch
Manifold
Thermometers
Relief
Valve
Relief
Valve
Refer to Trane Engineering Bulletin -Series RChiller Sound Ratings and
Installation Guide for sound-sensitive applications.
Figure 15 Typical Thermometer, Valving, and Manifold Pressure Gauge Set-up
Water Pressure Relief Valves
CAUTION
Shell Damage!
Shutoff
Valves
Manifold
Thermometers
Cond Water
Reg. Valve (Opt.)
Isolation
Valves
Pressure Differential
Gauge
Cond
Wate
Flow
Install a pressure relief valve in both evaporator and condenser
water systems. Failure to do so may result in shell damage.
Install a water pressure relief valve in one of the condenser and one of the
evaporator water box drain connections or on the shell side of any shutoff
valve. Water vessels with close-coupled shutoff valves have a high potential
for hydrostatic pressure buildup on a water temperature increase. Refer to
applicable codes for relief valve installation guidelines.
Flow Sensing Devices
The installer must provide flow switches or differential pressure switches
with pump interlocks to sense system water flow. Flow switch locations are
schematically shown in Figure 15.
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.
RTHD-SVX01D-EN 51
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Installation Mechanical
Flow switches must stop or prevent compressor operation if either system
water flow drops off below the required minimum shown on the pressure
drop curves. 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 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 CH530 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 in Section 1 for minimum flow recommendations
for specific water pass arrangements. Flow switch contacts are closed on
proof of water flow.
Refrigerant Pressure Relief Valve Venting
WARNING
Hazardous Gases!
Consult local regulations for any special relief line requirements.
Refrigerant vented into a confined equipment room could
displace available oxygen to breathe, causing possible
asphyxiation or other serious health risks. Failure to follow these
recommendations could result in death or serious injury.
NOTE: Vent pipe size must conform to the ANSI/ASHRAE Standard 15 for
vent pipe sizing. All federal, state, and local codes take precedence over any
suggestions stated in this manual.
All relief valve venting is the responsibility of the installing contractor.
All RTHD units use evaporator, compressor, and condenser pressure relief
valves (Figure 16) that must be vented to the outside of the building.
Relief valve connection sizes and locations are shown in the unit submittals.
Refer to local codes for relief valve vent line sizing information.
Caution
Equipment Damage!
Do not exceed vent piping code specifications. Failure to comply
with specifications may result in capacity reduction, unit damage
and/or relief valve damage.
52 RTHD-SVX01D-EN
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Installation Mechanical
Relief valve discharge setpoints and capacities rates are given in Table 11.
Once the relief valve has opened, it will reclose when pressure is reduced to
a safe level.
NOTE: Once opened, relief valves may have tendency to leak and must be
replaced.
Discharge Pipes
*
*
Evaporator Shell
* Valve is hidden by pipe
Figure 16 Relief Valve Location
Table 11 Pressure Relief Valve Data
Discharge
Setpoint
Valve Location
Evap - B1 200 1 48.0 1 1-5/16 -12
Evap - B2 200 1 48.0 1 1-5/16 -12
Evap -B3 200 1 48.0 1 1-5/16 -12
Evap -C1 200 1 48.0 1 1-5/16 -12
Evap - C2 200 1 48.0 1 1-5/16 -12
Evap - D1 200 1 48.0 1 1-5/16 -12
Evap - D2 200 1 48.0 1 1-5/16 -12
Evap - D3 200 1 48.0 1 1-5/16 -12
Evap - D4 200 1 48.0 1 1-5/16 -12
Evap - D5 200 1 48.0 1 1-5/16 -12
Evap - D6 200 1 48.0 1 1-5/16 -12
Evap - E1 200 1 48.0 1 1-5/16 -12
Evap - F1 200 1 48.0 1 1-5/16 -12
Evap - F2 200 1 48.0 1 1-5/16 -12
Evap - G1 200 1 78.8 1-1/4 1-5/8 - 12
Evap - G2 200 1 78.8 1-1/4 1-5/8 - 12
(psi)
Condenser Shell
Pressure relief valve discharge capacities will vary with shell diameter and
length and also compressor displacement. Discharge venting capacity should
be calculated as required by ASHRAE Standard 15-94. Do not adjust relief
valve setting in the field.
Number
of Valves
Rated Capacity
per Relief Valve
(lba/min.)
Field Connection
Pipe Size (in NPT)
Factory
Shell Side
Connection(in)
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Installation Mechanical
Table 11 Pressure Relief Valve Data
Discharge
Setpoint
Valve Location
Evap - G3 200 1 78.8 1-1/4 1-5/8 - 12
Cond - B1 200 2 48.0 1 1-5/16 -12
Cond - B2 200 2 48.0 1 1-5/16 -12
Cond - D1 200 2 48.0 1 1-5/16 -12
Cond - D2 200 2 48.0 1 1-5/16 -12
Cond - E1 200 2 48.0 1 1-5/16 -12
Cond - E2 200 2 48.0 1 1-5/16 -12
Cond - E3 200 2 48.0 1 1-5/16 -12
Cond - E4 200 2 48.0 1 1-5/16 -12
Cond - E5 200 2 48.0 1 1-5/16 -12
Cond - F1 200 2 48.0 1 1-5/16 -12
Cond - F2 200 2 48.0 1 1-5/16 -12
Cond - F3 200 2 48.0 1 1-5/16 -12
Cond - G1 200 2 48.0 1 1-5/16 -12
Cond - G2 200 2 48.0 1 1-5/16 -12
Cond - G3 200 2 48.0 1 1-5/16 -12
Comp - B1/B2* 200 2 78.8 1-1/4 1-5/8 - 12
Comp - C1/C2* 200 3 78.8 1-1/4 1-5/8 - 12
Comp - D1/D2/D3* 200 3 78.8 1-1/4 1-5/8 - 12
Comp -E3* 200 3 78.8 1-1/4 1-5/8 - 12
(psi)
Number
of Valves
Rated Capacity
per Relief Valve
(lba/min.)
Field Connection
Pipe Size (in NPT)
Factory
Shell Side
Connection(in)
* Only used with isolation valve option
Thermal Insulation
All RTHD units are available with optional factory installed thermal insulation.
If the unit is not factory insulated, install insulation over the areas shaded in
Figure 17. Refer to Table 12 for types and quantities of insulation required.
NOTE: Liquid line filter, refrigerant charging valves, water temperature
sensors, drain and vent connections when insulated must remain accessible
for service.
NOTE: Use only water-base latex paint on factory-applied insulation. Failure
to do so may result in insulation shrinkage.
NOTE: Units in environments with higher humidity or very low leaving water
temperature may require thicker insulation
54 RTHD-SVX01D-EN
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Installation Mechanical
.
Figure 17 Typical RTHD Insulation Requirements
Table 12 Recommended Insulation Types
Location Type Sq. Feet
Evaporator 3/4” wall 90
Compressor 3/4” wall 25
All components and piping on low side of system (gas
pump, return oil line, filter from pump)
3/4” wall 160
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Installation Mechanical
56 RTHD-SVX01D-EN
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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.
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects and
discharge all motor start/run capacitors before servicing. Follow
proper lockout/tagout procedures to ensure the power cannot be
inadvertently energized. Verify with an appropriate voltmeter that
all capacitors have discharged. Failure to disconnect power and
discharge capacitors before servicing could result in death or
serious injury.
All wiring must comply with local and National Electric Codes. 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.
Typical wiring diagrams are in the back of this manual.
CAUTION
Use Copper Conductors Only!
Unit terminals are not designed to accept other types of
conductors. Failure to use copper conductors may result in
equipment damage.
Do not allow conduit to interfere with other components, structural members
or equipment. All conduit must be long enough to allow compressor and
starter removal.
NOTE: To prevent control malfunctions, do not run low voltage wiring (<30V)
in conduit with conductors carrying more than 30 volts.
Power Supply Wiring
Model RTHD chillers are designed according to NEC Article 310-15; therefore,
all power supply wiring must be sized and selected accordingly by the project
engineer.
For a complete discussion on the use of conductors, see Trane Engineering
Bulletin EB-MSCR-40.
Refer to Trane Engineering Bulletin CTV-EB-93 for power wire sizing.
Water Pump Power Supply
Provide power supply wiring with fused disconnect for both the chilled water
and condenser water pumps.
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Installation Electrical
Electrical Panel Power Supply
Power supply wiring instructions for the starter/control panel are:
1. Run line voltage wiring in conduit to access opening(s) on starter/control
panel or pull-box. See CTV-EB-93 for wire sizing and selection information
and refer to Table 13 that show typical electrical connection sizes and
locations. Always refer to submittal information for your actual unit specifications.
Table 13 Wire Selection Chart for Starter Panels
Min.
Supply Leads for All Starters (0 - 2000 Volts)
Wire
Size
Copper
0
75
C
840******
652******
468******
360******
292******
1104******
0 120 192 252 360 384 360 480
00 140 224 294 420 448 420 560
000 160 256 336 480 512 480 640
0000 184 294 386 552 589 552 736
250 204 326 428 612 653 612 816
300 228 356 479 684 730 684 912
1 Conduit
3 Wire
1 Conduit
6 Wire
1 Conduit
9 Wire
2
Conduits
6 Wire
2
Conduits
12 Wire
3
Conduits
9 Wire
4
Conduits
12 Wire
350 248 397 521 744 794 744 992
400 268 429 563 804 858 804 1072
500 304 486 638 912 973 912 1216
Conductors to the starter and motor connected in parallel (electrically joined at both ends to form a single conductor)
must be sized 0 (1/0) or larger per NEC 310-4. Each phase must be equally represented in each conduit.
58 RTHD-SVX01D-EN
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Installation Electrical
Figure 18 Electrical Installation
WARNING
Live Electrical Components!
During installation, testing, servicing and troubleshooting of this
product, it may be necessary to work with live electrical
components. Have a qualified licensed electrician or other
individual who has been properly trained in handling live
electrical components perform these tasks. Failure to follow all
electrical safety precautions when exposed to live electrical
components could result in death or serious injury.
Compressor Motor Phase Sequencing
Always verify that proper rotation of the Series R 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 incoming power supply phased A, B, C.
To confirm the correct phase sequence (ABC), use a Model 45 Associated
Research Phase indicator or equivalent.
Basically, voltages generated in each phase of a polyphase alternator or circuit
are called phase voltages. In a three-phase circuit, three sine wave voltages
are generated, differing in phase by 120 electrical degrees. The order in which
the three voltages of a three-phase system succeed one another is called
RTHD-SVX01D-EN 59
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Installation Electrical
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,” when counterclockwise, “CBA.”
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.
Correcting Improper Electrical Phase Sequence
Proper compressor motor electrical phasing can be quickly determined and
corrected before starting the unit. If using an Associated Research Model 45
Phase Sequence Indicator, follow this procedure:
1. Press the STOP button to insure the unit will not attempt to start the
compressor.
2. Open the electrical disconnect or circuit protection switch that provides
line power to the line power terminal block in the control panel (or to the
unit-mounted disconnect).
3. Connect the phase sequence indicator leads to the line power terminal
block (or the unit mounted disconnect) as follows:
Phase Seq. Lead 1TB1 Terminal
Black (Phase A) L1
Red (Phase B) L2
Yellow (Phase C) L3
4. Turn power on by closing the unit supply power disconnect switch.
5. Read the phase sequence on the indicator. The “ABC” indicator on the
face of the phase indicator will glow if phase is “ABC”.
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects and
discharge all motor start/run capacitors before servicing. Follow
proper lockout/tagout procedures to ensure the power cannot be
inadvertently energized. Verify with an appropriate voltmeter that
all capacitors have discharged. Failure to disconnect power and
discharge capacitors before servicing could result in death or
serious injury.
6. If the “CBA” indicator glows instead, open the unit main power disconnect and switch two line leads on the line power terminal block (or the
unit mounted disconnect). Reclose the main power disconnect and
recheck phasing.
7. Reopen the unit disconnect and disconnect the phase indicator.
60 RTHD-SVX01D-EN
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Installation Electrical
Terminal Lugs
Proper starter/control panel line-side lug sizes are specified on the starter
submittals. These lug sizes must be compatible with conductor sizes specified by the electrical engineer or contractor. Appropriate lug sizes are provided.
Circuit Breakers and Non-Fused Disconnect Switches (factory installed
Option)
Units that are ordered with factory installed Circuit Breakers or Non-Fused
Disconnect Switches ship with the handle in the control panel. The handle
must be installed prior to starting the unit.
The operating mechanism is already pre installed on the Disconnect/ Circuit
Breaker frame.
The hole locations and shafts lengths have already been cut. And the shaft
already installed.
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects and
discharge all motor start/run capacitors before servicing. Follow
proper lockout/tagout procedures to ensure the power cannot be
inadvertently energized. Verify with an appropriate voltmeter that
all capacitors have discharged. Failure to disconnect power and
discharge capacitors before servicing could result in death or
serious injury.
1. Attach the handel and gasket to the enclosure door and secure with the
four bolts, lock washers and nut as shown in Figure 19. Tighten to 75 in-
Lbs.
Note: there is an additional lexan spacer on the handel not shown in the
Figure 19, do not remove.
Figure 19 Handle on Door
2. Check that when the enclosure door is closed, the handle interlocks with
RTHD-SVX01D-EN 61
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Installation Electrical
the shaft in all handel positions except RESET/OPEN. To open the enclosure door when the breaker is in the ON position, rotate the screw slot
on the handle plate counter -clockwise. Verify operation.
Table 14 Lug Sizes
Device Max. Current
RLA Circuit Breaker (copper)
0-200 (1) #6 - 350 MCM 250A
200.1-280 (2) 3/0-500 MCM 350A
280.1-320 (2) 3/0 - 500 MCM 400A
320.1-400 (2) 3/0 - 500 MCM 500A
400.1-476 (2) 3/0 - 500 MCM 600A
476.1-560 (4) 250 - 500 MCM 700A
560.1-640 (4) 250 - 500 MCM 800A
640.1-800 (4) 250 - 500 MCM 1000A
Rating
Non-Fused Disconnect
RLA
207, 277, 300 (2) 3/0 - 500 MCM 400A
360, 397 (2) 3/0 - 500 MCM 600A
476 (2) 3/0 - 500 MCM 600A
598 (2) 3/0 - 500 MCM 800A
500 (2) 3/0 - 500 MCM 800A
779 (4) 250 MCM - 500 MCM 1200A
Switch
RLA Main Lugs Only
1-476 (2) #6-500 MCM
500-598 (2) #4-500 MCM
760A
750A
Fused Disconnect Switches
Size fused disconnects in accordance with NEC Article 440-22(a).
Rated Load Amperage (RLA)
The compressor motor RLA for a particular chiller is determined by the field
selection program and indicated on the compressor nameplate.
Minimum Circuit Ampacity (MCA)
The MCA is equal to 1.25 x the compressor RLA (on nameplate).
62 RTHD-SVX01D-EN
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Installation Electrical
Maximum Fuse/Circuit Breaker Size
The maximum fuse/circuit breaker size is equal to 2.25 x the compressor RLA
in accordance with UL 1995, para. 36.15.See also NEC 440-22.
The recommended dual element (RDE) fuse size is equal to 1.75 x RLA in
accordance with NEC Table 430-152.
For recommended field connection lug sizes (RTHD starters) see Table 14.
RTHD-SVX01D-EN 63
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Installation Electrical
Application Of Solid-State Starters
The RediStart MX motor starter is a microprocessor-controled started fot
induction motors.
Viewing Parameter Values
Parameter view mode can be entered by:
1. At the default meter display, press the PARAM key to enter parameter
mode. "P 1" will be displayed to indicate Parameter 1.
2. Use the UP and DOWN keys to scroll through the available parameters.
3. Pressing the UP key from "P 1" will advance to parameter "P 2".
4. Pressing the DOWN key from "P 1" will wrap around to the highest
parameter.
5. The value of the parameter can be viewed by pressing the ENTER key.
6. To view another parameter without changing/saving the parameter, press
the PARAM key to return to the parameter number display.
To return to the default meter display either:
1. Press the PARAM key while in the parameter number display mode.
2. Wait 60 seconds and the display will return to the default meter display
Parameter Settings
Parameter Description Setting Range Units Default
P1 Motor FLA 1-6400 A
P2 Maximum Motor Current 100-800 %FLA 225
P3 Ramp Time 0-300 Sec 1
P4 Rated RMS Voltage 200, 208, 220, 230, 240, 350,
380, 400, 415, 440, 460, 480,
500, 525, 575, 600
P5 CT Ratio (x:1) 72, 96, 144, 288, 864, 1320,
2640, 2880, 3900, 5760
P6 Software Part Number Display only - -
P7 Passcode 0-9999 - -
P8 Fault Log Display faults stored in Fault
log
rms
V
rms
- 288
--
10
480
64 RTHD-SVX01D-EN
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Installation Electrical
WARNING
Electrical Shock!
Contacting any of the motor terminals, even with the motor off
can cause a severe, potentially fatal, shock. 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.
NOTE: IMPORTANT! WHEN EVACUATING THE CHILLER’S REFRIGERANT SYSTEM, ALWAYS HAVE THE MAIN POWER DISCONNECT/
CIRCUIT BREAKER OPENED.
Even when the compressor is not running, voltage is present at the
compressor motor terminals, providing the potential for current to flow
through a low impedance path.
When removing refrigerant for the chiller both the condenser and chilled
water pump must be operating to avoid freeze up.
As the chiller is evacuated below atmospheric pressure, the dielectric
strength (resistance to arcing) of the gaseous atmosphere is significantly
reduced. Because the SCRs are connected “inside the delta,” three of the
motor terminals are connected directly to the line voltage. An “arc over” can
occur between motor terminals under conditions seen in the evacuation process. If this occurs the circuit breaker (or other external protective devices)
will trip in response to high fault currents, and motor damage may also occur.
This can be avoided through being certain that the chiller is fully discon-
nected from all power sources before beginning pumpdown or evacuation procedures, as well as guaranteeing that the disconnect cannot be
accidentally closed while the chiller is in a vacuum.
RTHD-SVX01D-EN 65
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Installation Electrical
C T ' s
B BBA
M a i n
P o w e r
1 2
A A
9 B 7 B
1 1 B
3
A A
B BBA
9 7
1 1
5 A
4 A
7 A
T 1
9 A
T 2
1 1 A
T 3
1 K 1 1 K 3
2 1
3
M A
M A M A
6 A
T 6
8 A
T 4
1 0 A
T 5
1 2 A
C B
C B
1 0
8
B A
C B
1 2
A B
1 0
1 2
1 K 4
1 0 C 1 2 C
8 C
A B
8
1 K 2
2 B 1 B
3 B
1 M
2 M
T o C o n t r o l s
3 M
Figure 20 Y-D Starter Panel Power Wire Routing
66 RTHD-SVX01D-EN
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Installation Electrical
C T ' s
1 2
F FFG
M a i n
P o w e r
G G
T 1
1 G
T 2
2 G
T 3
3
3 G
7 C
T 6
9 C
T 4
1 1 C
1 1 C
T 5
T 3 T 2
S o l i d
S t a t e
S t a r t e r
L 3 L 2
3 2
F FFK
9 C 7 C
K
T 1
N o t e : S S S
i n s t a l l e d i n
p a n e l u p s i d e d o w n .
L 1
1
K
1 K
2 K
T o C o n t r o l s
3 K
Figure 21 Solid State Starter Panel Power Wire Routing
Module Connections for Interconnecting Wiring
All connectors can be unplugged or the wires can be removed from the
screw assembly. If an entire plug is removed, make sure the plug and the
associated jack are marked for proper location identification during reinstallation.
CAUTION
Equipment Damage!
Plugs and jacks must be clearly marked before disconnecting,
because specific plugs will fit into other jacks. Possible damage to
equipment may occur if the plugs are reversed with the jacks.
Interconnecting Wiring (Field Wiring Required)
NOTE: Important: Do not turn chiller on or off using the chilled water pump
interlocks.
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Installation Electrical
When making field connections, refer to the appropriate field layout, wiring,
schematics and controls diagrams that ship with the unit. The diagrams in this
manual are typical only and may not match 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
1/3 hp, 7.2 FLA, 43.2 LRA
At 240 VAC 5.0 amp resistive
2.0 amp pilot duty
1/3 hp, 3.6 FLA, 21.6 LRA
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.
NOTE: Asterisked connections require the user to provide an external
source of power. The 115V control power transformer is not sized for
additional load.
Chilled Water Pump Control
CH530 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 the evaporator pressure is seen to be close to
the Low Side Evaporator Pressure relief valve setting.
Chilled Water Flow Interlock
CH530 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.
Condenser Water Pump Control
CH530 provides a contact closure output to start and stop the condenser
water pump. If condenser pumps are arranged in a bank with a common
header, the output can be used to control an isolation valve and/or signal
another device that an additional pump is required.
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Installation Electrical
Condenser Water Pump Prestart time has been added to help with cold condenser water problems. In very cold outdoor ambients, the cooling towers
sump cold water 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
tower's sump, this problem can be avoided.
Condenser Water Flow Interlock
The CH530 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 CH530
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 de-energizes 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 CH530 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.
Chilled Water Reset (CWR)
The MP will reset the chilled water temperature setpoint based on either
return water temperature, or outdoor air temperature. The Return Reset
option is standard, Outdoor Reset is optional.
The following is selectable:
• RESET TYPE Setpoint.
This can be set to: NO CWR, OUTDOOR AIR TEMPERATURE RESET,
RETURN WATER TEMPERATURE RESET, or CONSTANT RETURN
WATER TEMPERATURE RESET. The MP shall not permit more than one
type of reset to be selected.
• RESET RATIO Setpoints.
For outdoor air temp. reset, both positive and negative reset ratios will be
allowed.
• START RESET Setpoints.
• MAXIMUM RESET Setpoints.
The maximum resets shall be with respect to the chilled water setpoint.
When the chiller is running, if any type of CWR is enabled, the MP will step
the CWS toward the desired CWS' (based on the below equations and setup
parameters) at a rate of 1 degree F every 5 minutes until the Active CWS
equals the desired CWS'. When the chiller is not running the CWS will be
RTHD-SVX01D-EN 69
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Installation Electrical
fully reset immediately (within one minute). The chiller will then start at the
Differential to Start value above a fully reset CWS or CWS' for Outdoor,
Return, and Constant Return Reset.
Equations for calculating CWR
Equation used to get Degrees of Reset:
Outdoor Air:
Degrees of Reset = Reset Ratio * (Start Reset - TOD)
Return Reset:
Degrees of Reset = Reset Ratio * (Start Reset - (TWE - TWL))
Constant Return:
Degrees of Reset = 100% * (Design Delta Temp - (TWE - TWL))
To obtain Active CWS from Degrees of Reset:
Active CWS = Degrees of Reset + Previous CWS
Note: Previous CWS can either be Front Panel, BAS, or External
Reset Ratio calculation:
The Reset Ratio on the User Interface is displayed as a percentage. To use it
in the above equation it must be converted to its decimal form.
Reset Ratio percent / 100 = Reset Ratio decimal
Example of converting Reset Ratio:
If the Reset Ratio displayed on the User Interface is 50%
then use (50/100) = .5 in the equation
TOD = Outdoor Air Temp
TWE = Evap Entering Water Temp
TWL = Evap Leaving Water Temp
Programmable Relays (Alarm and Status) - Optional
CH530 provides a flexible alarm or chiller status indication to a remote location through a hard wired interface to a dry contact closure. Four relays are
available for this function, and they are provided (generally with a Quad Relay
Output LLID) as part of the Alarm Relay Output Option.
The events/states that can be assigned to the programmable relays are listed
in the following table.
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Installation Electrical
Table 15 Chiller Events/Status Descriptions
Event/State Description
Alarm - Latching This output is true whenever there is any active diagnostic that requires a manual reset to
clear, that effects the Chiller, the Circuit, or any of the Compressors on a circuit. This
classification does not include informational diagnostics.
Alarm - Auto Reset This output is true whenever there is any active diagnostic that could automatically clear, that
effects the Chiller, the Circuit, or any of the Compressors on a circuit. This classification does
not include informational diagnostics. If all of the auto resetting diagnostics were to clear,
this output would return to a false condition.
Alarm This output is true whenever there is any diagnostic effecting any component, whether
latching or automatically clearing. This classification does not include informational
diagnostics.
Warning This output is true whenever there is any informational diagnostic effecting any component,
whether latching or automatically clearing.
Chiller Limit Mode This output is true whenever the chiller has been running in one of the Unloading types of
limit modes (Condenser, Evaporator, Current Limit or Phase Imbalance Limit) continuously
for the last 20 minutes. A given limit or overlapping of different limits must be in effect
continuously for 20 minutes prior to the output becoming true. It will become false, if no
Unload limits are present for 1 minute. The filter prevents short duration or transient
repetitive limits from indicating. The chiller is considered to be in a limit mode for the
purposes of front panel display and annunciation, only if it is fully inhibiting loading by virtue
of being in either the "hold" or "forced unload" regions of the limit control, excluding the
"limited loading region". (In previous designs, the "limit load" region of the limit control was
included in the criteria for the limit mode call out on the front panel and annunciation
outputs)
Compressor
Running
Chiller Head
Pressure Relief
Request Relay
The output is true whenever any compressors are started or running on the chiller and false
when no compressors are either starting or running on the chiller.
This status may or may not reflect the true status of the compressor in Service Pumpdown if
such a mode exists for a particular chiller.
This relay output is energized anytime the chiller is running in one of the following modes;
Ice Making Mode or Condenser Pressure Limit Control Mode continuously for the duration
specified by the Chiller Head Relief Relay Filter Time. The Chiller Head Relief Relay Filter
Time is a service setpoint. The relay output is de-energized anytime the chiller exits all above
modes continuously for the duration specified by the same Chiller Head Relief Relay Filter
Time.
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Installation Electrical
The CH530 Service Tool (TechView) is used to install and assign any of the
above listed events or status to each of the four relays provided with this
option.
The default assignments for the four available relays are listed below.
Table 16 Programable Relays
LLID Software
LLID Name
Relay Designation Output Name Default
Operating Status
Programmable
Relays
Relay 0 Status Relay 4, J2-1,2,3 Head Pressure Relief Request
Relay 1 Status Relay 3, J2-4,5,6 Chiller Limit Mode Relay
Relay 2 Status Relay 2, J2-7,8,9 Chiller Alarm Relay (latching or
nonlatching)
Relay 3 Status Relay 1, J2-10,11,12 Compressor Running Relay
Emergency Stop
The CH530 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.
Soft Loading
Soft loading will prevent the chiller from going to full capacity during the pulldown period.
The CH530 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.
Three settings are used to describe the behavior of soft loading. The setup
for softloading can be done using TechView.
• Capacity Control Softload Time: This setting controls the time constant of
72 RTHD-SVX01D-EN
the Filtered Chilled Water Setpoint. It is settable between 0 and 120 min.
Page 73
Installation Electrical
• 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 Percent: This setting controls the starting
point of the Filtered Current Limit Setpoint. It is adjustable from 40 for
RTHD to 100 percent RLA.
External Base Loading - Optional
Primarily for process control requirements, base loading provides for immediate start and loading of a chiller up to an externally or remotely adjustable current limit setpoint without regard to differential to start or stop, or to leaving
water temperature control. This allows the flexibility to prestart or preload a
chiller in anticipation of a large load application. It also allows you to keep a
chiller on line between processes when leaving water temperature control
would normally cycle the unit.
When the base loading option is installed through TechView it will be controllable through DynaView/TechView, External Hardware Interface or Tracer (if
Tracer is installed). Order for precedence for all setpoints, DynaView/TechView then External then Tracer from lowest to highest priority. If one of the
higher priority setpoints drops out due to a bad sensor or communication loss
then base loading shall go to the next lowest priority of command and setpoint. The command settings and control setpoints associated with base
loading are explained below.
Base Loading Control setpoint
This setpoint has three possible sources, an External Analog Input, DynaView/TechView or Tracer.
• DynaView/TechView Base Loading Control Setpoint
The range is 40 - 100 % Compressor Load (Max %RLA). The default is
50%.
• Tracer Base Loading Control Setpoint
The range is 40 - 100 % Compressor Load (Max %RLA). The default is
50%.
• External Base Loading Setpoint
This is an Analog Input that sets the base loading setpoint. This signal can
be controlled by either a 2-10Vdc or 4-20ma Signal based on configuration
information. The equations show the relationship between input and percent compressor load:
If the input is configured as a 4 - 20 mA:
% Load = 3.75 * (mA Input) + 25
If the input is configured as a 2 - 10 Vdc:
% Load = 7.5 * (Vdc Input) + 25
Summit Interface - Optional
CH530 provides an optional interface between the chiller and a Trane Summit
BAS. A Communications interface LLID shall be used to provide "gateway"
functionality between the Chiller and Summit.
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Installation Electrical
LonTalk Communication Interface - Optional
CH530 provides an optional LonTalk Communication Interface (LCI-C)
between the chiller and a Building Automation System (BAS). An LCI-C LLID
shall be used to provide "gateway" functionality between the LonTalk protocol
and the Chiller.
Ice Making Contact - Optional
CH530 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, CH530 will not allow the chiller to restart until the ice making
contact is opened.
Ice Machine Control - Optional
CH530 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 CH530 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
Ch530 will accept either a 2-10 VDC or a 4-20 mA input (J9-4, J9-5) signal, to
adjust the chilled water setpoint from a remote location.
External Current Limit Setpoint - Optional
CH530 will accept either a 2-10VDC or a 4-20mA input (J7-11, J7-12) signal to
adjust the current limit setpoint from a remote location.
Percent Condenser Pressure Output - Optional
CH530 provides a 2-10 VDC analog output to indicate percent High Pressure
Cutout (HPC) condenser pressure.
Percent HPC = (Condenser Pressure/High Pressure Cutout Setpoint)*100
Compressor Percent RLA Output - Optional
CH530 provides a 2-10 Vdc analog output to indicate % RLA of compressor
starter average phase current. 2 to 10 Vdc corresponds to 0 to 120% RLA.
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Operating Principles Mechanical
This section contains an overview of the operation and maintenance of Series
R chillers equipped with microcomputer-based control systems. It describes
the overall operating principles of the RTHD water chiller..
Following the section is information regarding specific operating instructions,
detailed descriptions of the unit controls and options (Operator Interface Control Systems), and maintenance procedures that must be performed regularly to keep the unit in top condition (Periodic Maintenance and Maintenance Procedures). Diagnostic information (Diagnostics) 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 Model RTHD units are single-compressor water-cooled liquid chillers.
These units are equipped with unit-mounted starter/control panels.
The basic components of an RTHD unit are:
• Unit-mounted panel containing starter and TracerCH530 controller and
Input/Output LLIDS
• Helical-rotary compressor
• Evaporator
• Electronic expansion valve
• Water-cooled condenser with integral subcooler
• Oil supply system
• Oil cooler (application dependent)
• Related interconnecting piping.
Refrigeration (Cooling) Cycle
The refrigeration cycle of the Series R chiller is conceptually similar to that of
other Trane chiller products. It makes use of a shell-and-tube evaporator
design with refrigerant evaporating on the shell side and water flowing inside
tubes having enhanced surfaces.
The compressor is a twin-rotor helical rotary type. It uses a suction gascooled motor that operates at lower motor temperatures under continuous
full and part load operating conditions. An oil management system provides
an almost oil-free refrigerant to the shells 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 a shell-and-tube heat exchanger where refrigerant is condensed on the shell side and water flows internally in the tubes.
Refrigerant is metered through the flow system using an electronic expansion valve, that maximizes chiller efficiency at part load.
A unit-mounted starter and control panel is provided on every chiller. Microprocessor-based unit control modules (Tracer CH530) provide for accurate
chilled 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.
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Pressure
Operating Principles Mechanical
Cycle Description
The refrigeration cycle for the RTHD chiller can be described using the pressure-enthalpy diagram shown in Figure 22. Key State Points are indicated on
the figure and are referenced in the discussion following. A schematic of the
system showing the refrigerant flow loop as well as the lubricant flow loop is
shown in Figure 25.
Liquid
3
4
2
5
Figure 22 Pressure /Enthalpy Curve
Evaporation of refrigerant occurs in the evaporator. A metered amount of
refrigerant liquid enters a distribution system in the evaporator shell and is
then distributed to the tubes in the evaporator tube bundle. The refrigerant
vaporizes as it cools the water flowing through the evaporator tubes. Refrigerant vapor leaves the evaporator as saturated vapor (State Pt. 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-gascooled 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 Pt. 2. The lubrication and oil management issues are discussed in more detail in the compressor description and oil management sections that follow.
Baffles within the condenser shell distribute the compressed refrigerant
vapor evenly across the condenser tube bundle. Cooling tower water, circulating through the condenser tubes, absorbs heat from this refrigerant and condenses it.
1
Gas
Enthalpy
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Operating Principles Mechanical
As the refrigerant leaves the bottom of the condenser (State Pt. 3), it enters
an integral subcooler where it is subcooled before traveling to the electronic
expansion valve (State Pt. 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 Pt. 5). The flash gas from the expansion process is internally routed to
compressor suction, and while the liquid refrigerant is distributed over the
tube bundle in the evaporator.
The RTHD 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 relatively low liquid level is maintained in the
evaporator shell, which contains a bit of surplus refrigerant liquid and accumulated lubricant. A liquid level measurement device monitors this level and provides feedback information to the CH530 unit controller, which commands
the electronic expansion valve to reposition when necessary. If the level
rises, the expansion valve is closed slightly, and if the level is dropping, the
valve is opened slightly such that a steady level is maintained.
dual discharge lines only on C, D & E frame compressors
dual discharge lines
compressor
only on C, D & E frame
compressors
EXV
evaporator
gas pump
Figure 23 Refrigerant Flow Diagram
s
e
p
a
r
a
t
o
r
condenser
s
e
p
a
r
a
t
o
r
RTHD-SVX01D-EN 77
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Operating Principles Mechanical
Compressor Description
Unload
Solenoid
Load
Solenoid
Bearings
Piston
Housing
Female Rotor
Male Rotor
Bearing
Housing
Rotor
Housing
Discharge
Check Valve
Suction
Motor
Housing
Oil Reclaim
Port
Figure 24 Compressor Description
78 RTHD-SVX01D-EN
Unloader
Piston
Bearing
Lubricant
Port
Rotor
Injection
Port
Discharge
Plenum
Primary
Mounting
Holes
Slide Valve
Discharge
Check Valve
Motor Stator
Page 79
Operating Principles Mechanical
The compressor used by the Series R chiller consists of three distinct sections: the motor, the rotors and the bearing housing. Refer to Figure 24.
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 (Figure 24) .
Compressor Rotors
Each Series R chiller uses a semi-hermetic, direct-drive helical rotary 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. See Figure 24. 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 on
the RTHD units. The slide valve is located below (and moves along) the
rotors.
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 across the motor, cooling it, and then into the rotor
section. It is then compressed and released directly into the discharge plenum.
There is no physical contact between the rotors and compressor housing. Oil
is injected into the bottom of the compressor rotor section, 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 a slide valve assembly located
in the rotor/bearing housing sections of the compressor. Positioned along the
bottom of the rotors, the slide valve is driven by a piston/cylinder along an axis
that parallels those of the rotors (Figure 24).
Compressor load condition is dictated by the coverage of the rotors by the
slide valve. When the slide valve fully covers the rotors, the compressor is
fully loaded. Unloading occurs as the slide valve moves away from the suction end of the rotors. Slide valve unloading lowers refrigeration capacity by
reducing the compression surface of the rotors.
Slide Valve Movement
Movement of the slide valve piston (Figure 24) determines slide valve position which, in turn, regulates compressor capacity. Compressed vapor flowing in to and out of the cylinder governs piston movement, and is controlled
by the load and unload solenoid valves.
The solenoid valves (both normally closed) receive “load” and “unload” signals from the CH530, based on system cooling requirements. To load the
compressor, the CH530 opens the load solenoid valve. The pressurized vapor
flow then enters the cylinder and, with the help of the lower suction pressure
acting on the face of the unloader valve, moves the slide valve over the rotors
toward the suction end of the compressor.
The compressor is unloaded when the unload solenoid valve is open. Vapor
“trapped” within the cylinder is drawn out into the lower-pressure suction
area of the compressor. As the pressurized vapor leaves the cylinder, the slide
valve slowly moves away from the rotors toward the discharge end of the
rotors.
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Operating Principles Mechanical
When both solenoid valves are closed, the present level of compressor loading is maintained.
On compressor shutdown, the unload solenoid valve is energized. Springs
assist in moving the slide valve to the fully-unloaded position, so the unit
always starts fully unloaded.
Oil Management System
Oil Separator
The oil separator consists of a vertical cylinder surrounding an exit passageway. Once oil is injected into the compressor rotors, it mixes with compressed refrigerant vapor and is discharged directly into the oil separator. As
the refrigerant-and-oil mixture is discharged into the oil separator, the oil is
forced outward by centrifugal force, collects on the walls of the cylinder and
drains to the bottom of the oil separator cylinder. The accumulated oil then
drains out of the cylinder and collects in the oil sump located near the top and
in-between the evaporator and condenser shells.
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Operating Principles Mechanical
Oil that collects in the oil tank sump is at condensing pressure during compressor operation; therefore, oil is constantly moving to lower pressure areas.
Evaporator
Pressure
Transducer Pe
Master Oil Line
Solenoid
Optional Oil
Cooler
Oil/Refrigerant
Mixture
Oil Recovery
Oil Filter
Oil Return
Gas Pump
Oil Return Filter
Manual
Service
Valve
Optical Oil
Detector
Evaporator
RTHD Oil System
Oil Pressure
Transducer
Manual
Service
Valve
Vent to
Condenser
Oil Sump
Drain Solenoid
Valve
To Bearings
Injection to
Rotors
Vent Line
Fill Solenoid
To Condenser
Pressure
restrictor
Compressor
Oil Separators
Oil Heaters
Liquid/Vapor
Refrigerant Mixture
Valve
Compressor
Discharge
Temperature
Sensor
Primary Oil System
Refrigerant & Oil
Mixture-Oil Recovery
System
Other
Condenser
Pressure
Transducer
Condenser
EXV
Figure 25 Oil Flow Diagram
Oil Flow Protection
Oil flowing through the lubrication circuit flows from the oil sump to the com-
pressor (see Figure 25). As the oil leaves the sump, it passes through a service valve, an oil cooler (if used), oil filter, master solenoid valve, and another
service valve. Oil flow then splits into two distinct paths, each performing a
separate function: (1) bearing lubrication and cooling, and (2) compressor oil
injection.
Oil flow and quality is proven through a combination of a number of sensors,
most notably a pressure transducer and the optical oil level sensor.
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Operating Principles Mechanical
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.
Likewise, the optical oil level sensor can detect the lack of oil in the primary
oil system (which could result from improper oil charging after servicing, or oil
logging in other parts of the system). The sensor will prevent the compressor
from starting or running unless an adequate volume of oil is present. The
combination of these two devices, as well as diagnostics associated with
extended low system differential pressure and low superheat conditions, can
protect the compressor from damage due to severe conditions, component
failures, or improper operation.
If the compressor stops for any reason, the master solenoid valve closes; this
isolates the oil charge in the sump during “off” periods. With the oil efficiently contained in the sump, oil is immediately available to the compressor
at start-up. Such flows would otherwise purge oil from the lines and the oil
sump, which is an undesirable effect.
To ensure the required system differential pressure is adequate to move oil
to the compressor, the CH530 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 , the EXV is modulated to
maintain evaporator pressure at a minimum of 25 psid below the condenser
pressure. 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 a 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 auxilliary 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 Series R 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 the Section 9 for recommended filter element replacement intervals.
Compressor Bearing Oil Supply
Oil is injected into the rotor housing where it is routed to the bearing groups
located in the motor and bearing housing sections. Each bearing housing is
vented to compressor suction so oil leaving the bearings returns through the
compressor rotors to the oil separator.
Compressor Rotor Oil Supply
Oil flowing through this circuit enters the bottom of 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.
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Operating Principles Mechanical
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 sump. The
function of active oil return is accomplished by a pressure-actuated pump
referred to as the “gas pump.”
The gas pump, mounted just beneath the evaporator, is a cylinder with four
ports controlled by two solenoids. The pump serves to return accumulating
oil in the evaporator to the compressor at regular time intervals. As the refrigerant-oil mixture enters the gas pump from the bottom of the evaporator, a fill
solenoid opens to allow refrigerant vapor to be vented into the top of the
evaporator, and is then closed. A second solenoid then opens to allow refrigerant at condenser pressure to enter the gas pump. Simultaneously, a check
valve prevents reverse flow back into the evaporator. A liquid refrigerant and
oil mixture is displaced from the gas pump cylinder and is directed through a
filter to the compressor. The oil then combines with oil injected into the compressor and returns to the oil sump via the oil separators.
Oil Cooler
The oil cooler is a brazed plate heat exchanger located near the oil filter. It is
designed to transfer approximately one ton 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.
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Operating Principles Mechanical
84 RTHD-SVX01D-EN
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Operator Interface Controls
CH530 Communications Overview
The Trane CH530 control system that runs the chiller consists of several elements:
• The main processor collects data, status, and diagnostic information and
communicates commands to the starter module and the LLID (for Low
Level Intelligent Device) bus. The main processor has an integral display
(DynaView).
• Higher level modules (e.g. starter) exist only as necessary to support system level control and communications. The starter module provides control of the starter when starting, running, and stopping the chiller motor.
It also processes its own diagnostics and provides motor and compressor
protection.
• Low level intelligent device (LLID) bus. The main processor communicates to each input and output device (e.g. temperature and pressure
sensors, low voltage binary inputs, analog input/output) all connected to a
four-wire bus, rather than the conventional control architecture of signal
wires for each device.
• The communication interface to a building automation system (BAS).
• A service tool to provide all service/maintenance capabilities.
Main processor and service tool (TechView) software is downloadable from
www.Trane.com. The process is discussed later in this section under TechView Interface.
DynaView provides bus management. It has the task of restarting the link, or
filling in for what it sees as “missing” devices when normal communications
has been degraded. Use of TechView may be required.
The CH530 uses the IPC3 protocol based on RS485 signal technology and
communicating at 19.2 Kbaud to allow 3 rounds of data per second on a 64device network. A typical four-compressor RTAC will have around 50 devices.
Most diagnostics are handled by the DynaView. If a temperature or pressure
is reported out of range by a LLID, the DynaView processes this information
and calls out the diagnostic. The individual LLIDs are not responsible for any
diagnostic functions. The only exception to this is the Starter module.
NOTE: It is imperative that the CH530 Service Tool (TechView) be used to
facilitate the replacement of any LLID or reconfigure any chiller component.
TechView is discussed later in this section.
Controls Interface
DynaView
Each chiller is equipped with the DynaView interface. DynaView has the capability to display additional information to the advanced operator including the
ability to adjust settings. Multiple screens are available and text is presented
in multiple languages as factory-ordered or can be easily downloaded online.
TechView
TechView can be connected to the DynaView module and provides further
data, adjustment capabilities, diagnostics information, downloadable software, and downloadable languages.
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DynaView Interface
The display on DynaView is a 1/4 VGA display with a resistive touch screen
and an LED backlight. The display area is approximately 4 inches wide by 3
inches high (102mm x 60mm).
Figure 26 DynaView
Key Functions
In this touch screen application, key functions are determined completely by
software and change depending upon the subject matter currently being displayed. The basic touch screen functions are outlined below.
CAUTION
Equipment Damage!
Putting excessive pressure on the touch screen could cause
damage. It takes less that 15 lbs of force to break the screen.
Radio Buttons
Radio buttons show one menu choice among two or more alternatives, all visible. (the AUTO button in Figure 26.) The radio button model mimics the buttons used on old-fashioned radios to select stations. When one is pressed,
the one that was previously pressed “pops out” and the new station is
selected. In the DynaView, model the possible selections are each associated
with a button. The selected button is darkened, presented in reverse video to
indicate it is the selected choice. The full range of possible choices as well as
the current choice is always in view.
Spin Value Buttons
Spin values are used to allow a variable setpoint to be changed, such as leaving water setpoint. The value increases or decreases by touching the increment (+) or decrement (-) arrows.
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Operator Interface Controls
Action Buttons
Action buttons appear temporarily and provide the user with a choice such as
Enter or Cancel.
File Folder Tabs
File folder tabs are used to select a screen of data. Just like tabs in a file
folder, these serve to title the folder/screen selected, as well as provide navigation to other screens. In DynaView, the tabs are in one row across the top
of the display. The folder tabs are separated from the rest of the display by a
horizontal line. Vertical lines separate the tabs from each other. The folder that
is selected has no horizontal line under its tab, thereby making it look like a
part of the current folder (as would an open folder in a file cabinet). The user
selects a screen of information by touching the appropriate tab.
Display Screens
Basic Screen Format
The basic screen format appears as:
Main
File Folder
Tabs
Page Scroll
(up)
Fixed Display
Contrast control (lighter)
Reports
Line Scroll
(up/down)
Settings
Page Scroll
(down)
Contrast control (darker)
The file folder tabs across the top of the screen are used to select the various
display screens.
The main body of the screen is used for description text, data, setpoints, or
keys (touch sensitive areas). The Chiller Mode is displayed here.
The double up arrows cause a page-by-page scroll either up or down. The single arrow causes a line by line scroll to occur. At the end of the page, the
appropriate scroll bar will disappear.
A double arrow pointing to the right indicates more information is available
about the specific item on that same line. Pressing it will bring you to a subscreen that will present the information or allow changes to settings.
The bottom of the screen (Fixed Display) is present in all screens and contains the following functions. The left circular area is used to reduce the contrast/viewing angle of the display. The right circular area is used to increase
the contrast/viewing angle of the display. The contrast may require re-adjustment at ambient temperatures significantly different from those present at
last adjustment.
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Operator Interface Controls
The other functions are critical to machine operation. The AUTO and STOP
keys are used to enable or disable the chiller. The key selected is in black
(reverse video). The chiller will stop when the STOP key is touched and after
completing the Run Unload mode.
Touching the AUTO key will enable the chiller for active cooling if no diagnostic is present. (A separate action must be taken to clear active diagnostics.)
The AUTO and STOP keys, take precedence over the Enter and Cancel keys.
(While a setting is being changed, AUTO and STOP keys are recognized even
if Enter or Cancel has not been pressed.)
The ALARMS button appears only when an alarm is present, and blinks (by
alternating between normal and reverse video) to draw attention to a diagnostic condition. Pressing the ALARMS button takes you to the corresponding
tab for additional information.
Keypad/Display Lockout Feature
DISPLAY AND TOUCH SCREEN ARE LOCKED
ENTER PASSWORD TO UNLOCK
321
653
987
Enter
NOTE: The DynaView display and Touch Screen Lock screen is shown
below. This screen is used if the Display and touch screen and lock feature is
enabled. Thirty minutes after the last keystroke, this screen is displayed and
the Display and Touch Screen is locked out until the sequence “159
<ENTER>” is pressed.
Until the proper password is entered, there will be no access to the DynaView screens including all reports, setpoints, and Auto/Stop/Alarms/Interlocks.
The password “159” can not be changed from either DynaView or TechView.
0
Cancel
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Operator Interface Controls
Main Screen
The Main screen is a summary of the chiller’s activity.The Main screen is the
default screen. After an idle time of 30 minutes the CH530 will display the
Main screen with the first data fields.
The remaining items (listed in the following table) are viewed by selecting the
up/down arrow icons.
Figure 27. Main Screen
Table 17 Main Screen Items
Description Resolution Units
Chiller Mode (>> submodes) Text
Evap Ent/Lvg Water Temp X.X F / C
Cond Ent/Lvg Water Temp X.X F / C
Active Chilled Water Setpoint (>>source) X.X F / C
Average Line Current X % RLA
Active Current Limit Setpoint (>>source) X % RLA
Active Base Loading Setpoint (>>source) X %
Active Ice Termination Setpoint (>>source) X.X F / C
Outdoor Air Temperature X.X F / C
Software Type RTH Text
Software Version X.XX Text
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Operator Interface Controls
Chiller Operating Modes
The machine-operating mode indicates the operational status of the chiller. A
sub-screen with additional mode summary information is provided by selection of an additional information icon (>>). The operating mode line will
remain stationary while the remaining status items scroll with the up/down
arrow keys. The following is a list of all Top Level and Sub-modes.
Table 18 Operating Modes
Chiller Modes Description
MP Resetting
1
Stopped
1
The chiller is not running and cannot run without intervention.
Further information is provided by the sub-mode:
Local Stop
2
Chiller is stopped by DynaView Stop button command- cannot be
remotely overridden.
Panic Stop
2
Chiller is stopped by the DynaView Panic Stop (by pressing Stop
button twice in succession) - previous shutdown was manually
commanded to shutdown immediately without a run-unload or
pumpdown cycle - cannot be remotely overridden.
2
Diagnostic Shutdown - Manual Reset
The chiller is stopped by a diagnostic that requires manual intervention to reset.
Other sub-modes are possible in conjunction with at least one of the above modes - See items below for their
descriptions:
Diagnostic Shutdown - Auto Reset
Start Inhibited by External Source
Start Inhibited by BAS
2
Waiting for BAS Communications
Ice Building to Normal Transition
Ice Building is Complete
Waiting for Oil Level
Run Inhibit
1
2
2
2
2
2
2
The chiller is currently being inhibited from starting (and running*),
but may be allowed to start if the inhibiting or diagnostic condition
is cleared. Further information is provided by the sub-mode:
2
Diagnostic Shutdown - Auto Reset
The entire chiller is stopped by a diagnostic that may automatically
clear.
Start Inhibited by External Source
2
The chiller is inhibited from starting (and running) by the "external
stop" hardwired input.
Start Inhibited by BAS
2
The chiller is inhibited from starting (and running) by command
from a Building Automation System via the digital communication
link (com 4 or com 5).
1 - Top Level Mode
2 - Sub Level Mode
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Table 18 Operating Modes
Chiller Modes Description
Waiting for BAS Communications2 This is a transient mode - 15-min. max, and is only possible if the
chiller is in the Auto - Remote command mode. After a power up
reset, it is necessary to wait for valid communication from a
Building Automation System (Tracer) to know whether to run or
stay inhibited. Either valid communication will be received from
the Building Automation System (e.g. Tracer), or a communication
diagnostic ultimately will result. In the latter case the chiller will
revert to Local control.
2
Power Up Delay Inhibit
min:sec
Ice Building to Normal Transition
Ice Building is Complete
2
2
Low Diff Rfgt Pres Cool-Down Time
mn:sec
1
Auto
Waiting For Evap Water Flow
Waiting for Need to Cool
Waiting to Start
1
Waiting For Cond Water Flow
Waiting for Oil Level
2
Cond Water Pump PreRun Time
2
2
2
2
min:sec
1 - Top Level Mode
2 - Sub Level Mode
The compressor is currently being inhibited from starting as part of
the power up start delay (or staggered start) feature. This feature is
intended to prevent multiple chillers from all starting simultaneously if power is restored to all chillers simultaneously.
The chiller is inhibited from running for a brief period of time if it is
commanded from active ice building mode into normal cooling
mode via the ice building hardwired input or Tracer. This allows
time for the external system load to "switchover" from an ice bank
to the chilled water loop, and provides for a controlled pull down of
the loop's warmer temperature. This mode is not seen if the ice
making is automatically terminated on return brine temperature per
the mode below.
The chiller is inhibited from running as the Ice Building process has
been normally terminated on the return brine temperature. The
chiller will not start unless the ice building command (hardwired
input or Building Automation System command) is removed or
cycled.(contact opened)
2
See oil flow protection spec
The chiller is not currently running but can be expected to start at
any moment given that the proper conditions and interlocks are
satisfied. Further information is provided by the sub-mode:
The chiller will wait up to 4 minutes in this mode for evaporator
water flow to be established per the flow switch hardwired input.
The chiller will wait indefinitely in this mode, for an evaporator
leaving water temperature higher than the Chilled Water Setpoint
plus the Differential to Start.
The chiller is not currently running and there is a call for cooling but
start is delayed by certain interlocks or proofs. Further information
is provided by the sub-mode:
The chiller will wait up to 4 minutes in this mode for condenser
water flow to be established per the flow switch hardwired input.
The chiller will wait up to 2 minutes in this mode for oil level to
appear in the oil tank.
The chiller will wait up to 30 minutes (user adjustable) in this mode
to allow the condenser water loop to equalize in temperature
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Operator Interface Controls
Table 18 Operating Modes
Chiller Modes Description
Compressor Restart Inhibit Time 2
min:sec
Waiting For EXV Preposition
Running
Unit is Building Ice
Establishing Min Capacity - High Disch
Temp
Base Loaded
1
2
2
2
Capacity Control Softloading
Current Control Softloading
2
2
2
EXV Controlling Differential Pressure
Running - Limited
1
Capacity Limited by High Cond Press
Capacity Limited by Low Evap Rfgt
2
Temp
1 - Top Level Mode
2 - Sub Level Mode
The compressor is currently unable to start due to its restart inhibit
timer. A given compressor is not allowed to start until 5 minutes
(adj) has expired since its last start.
The Chiller will wait for the time it takes the EXV to get to its
commanded pre-position prior to starting the compressor. This is
typically a relatively short delay and no countdown timer is
necessary (less than 15 seconds).
The chiller, circuit, and compressor are currently running. Further
information is provided by the sub-mode:
The chiller is running in the Ice Building Mode, and either at or
moving towards full capacity available. Ice mode is terminated
either with the removal of the ice mode command or with the return
brine temperature falling below the Ice Termination Setpoint.
The compressor is running and is being forced loaded, without
regard to the leaving water temperature control, to prevent tripping
on high compressor discharge temperature.
Chiller is running in "Base Load" operation where the capacity of
the chiller is controlled to maintain a given current per an
adjustable set point. The chiller is forced to run without regard to
the chilled water temperatures and the differential to start and stop.
The chiller is running, but loading is influenced by a gradual
'pulldown" filter on the chilled water temperature setpoint The
settling time of this filter is user adjustable as part of the softload
control feature.
The chiller is running, but loading is influenced by a gradual filter
on the current limit setpoint The starting current and the settling
time of this filter is user adjustable as part of the softload control
feature.
2
Liquid level control of the Electronic Expansion Valve has temporarily been suspended. The EXV is being modulated to control for a
minimum differential pressure. This control implies low liquid
levels and higher approach temperatures, but is necessary to
provide minimum oil flow for the compressor until the condenser
water loop can warm up to approx 50F.
The chiller, circuit, and compressor are currently running, but the
operation of the chiller/compressor is being actively limited by the
controls. Further information is provided by the sub-mode.
2
The circuit is experiencing condenser pressures at or near the
condenser limit setting. The compressor will be unloaded to
prevent exceeding the limits.
The circuit is experiencing saturated evaporator temperatures at or
near the Low Refrigerant Temperature Cutout setting. The
compressors will be unloaded to prevent tripping.
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Operator Interface Controls
Table 18 Operating Modes
Chiller Modes Description
Capacity Limited by Low Liquid Level2The circuit is experiencing low refrigerant liquid levels and the EXV
is at or near full open. The compressor will be unloaded to prevent
tripping.
Capacity Limited by High Current
2
Capacity Limited by Phase Unbalance
Note: Other normal running modes (see above) may also appear under this top level mode.
Shutting Down
Local Stop
Panic Stop
1
2
2
Diagnostic Shutdown - Manual Reset
Diagnostic Shutdown - Auto Reset
2
Compressor Unloading
Start Inhibited by External Source
Start Inhibited by BAS
Ice Building to Normal Transition
Ice Building is Complete
Evap Pump Off Delay
Service Override
1
Service Pumpdown
min:sec The compressor is in its "run - unload" state in which it is being
2
2
2
2
2
min:sec
2
1 - Top Level Mode
2 - Sub Level Mode
The compressor is running and its capacity is being limited by high
currents. The current limit setting is 120% RLA (to avoid
overcurrent trips).
2
The compressor is running and its capacity is being limited by
excessive phase current unbalance.
The chiller is still running but shutdown is imminent. The chiller is
going through a compressor run-unload. sequence. Shutdown is
necessary due to one (or more) of the following sub-modes:
Chiller is in the process of being stopped by DynaView Stop button
command.
Chiller is in the process of being stopped by DynaView Panic Stop
command.
2
Chiller is in the process of being stopped by a Latching Diagnostic
shutdown - Manual Reset is required to clear.
2
Chiller is in the process of being stopped by a Diagnostic shutdown
- Automatic clearing of the diagnostic is possible if condition clears.
continuously unloaded for 40 sec prior to shutdown.
Chiller is in the process of being stopped by the External Stop
hardwired input.
The Chiller is in the process of shutdown due to a command from
the Building Automation System (e.g. Tracer).
Chiller is in the process of being stopped by the transition from ice
to normal cooling mode with the removal of the ice making
command via the hardwired input or Building Automation System
(e.g. Tracer).
Chiller is in the process of being stopped as the Ice Building process
is being normally terminated on the return brine temperature.
The Chiller is in a Service Override mode
The chiller, circuit, and compressor is running via a manual
command to perform a Service Pumpdown. Both evap and
condenser water pumps are commanded to run. The EXV is held
wide open, but the manual liquid line service valve should be
closed.
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Operator Interface Controls
Reports Screen
The Reports tab allows a user to select from a list of reports headings. Each
report will generate a list of status items as defined in the tables that follow.
Figure 28. Reports Screen
Chiller Log
Table 19 Report Screen Items
Description Resolution Units
Evaporator
Evap Entering Water Temp ± XXX.X F / C
Evap Leaving Water Temp
Evap Sat Rfgt Temp
Evap Rfgt Pressure XXX.X psi / kPa
Evap Approach
Evap Water Flow Switch Status (Flow, No Flow) Text
Expansion Valve Position XXX.X Percent
Expansion Valve Position Steps XXXX Steps
Evaporator Liquid Level X.X in / mm
Condenser
Cond Entering Water Temp ± XXX.X F / C
Cond Leaving Water Temp
Cond Sat Rfgt Temp
Cond Rfgt Pressure XXX.X psi / kPa
Cond Approach Temp
Cond Water Flow Switch Status (Flow, No Flow) Text
Cond Head Pressure Ctrl Command XXX %
± XXX.X F / C
± XXX.X F / C
± XXX.X F / C
± XXX.X F / C
± XXX.X F / C
± XXX.X F / C
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Operator Interface Controls
Table 19 Report Screen Items
Description Resolution Units
Outdoor Air Temperature ± XXX.X F / C
Compressor
Compressor Starts XXXX Integer
Compressor Running Time XXXX:XX hr:min
System Rfgt Diff Pressure XXX.X psi / kPa
Oil Pressure XXX.X psi / kPa
Compressor Rfgt Discharge Temp
Discharge Superheat
% RLA L1 L2 L3 XXX.X Percent RLA
Amps L1 L2 L3 XXXX Amps
Volts AB BC CA XXXX Volts
ASHRAE Chiller Log
Current Time/Date XX:XX mmm dd, yyyy Date / Time
Operating Mode: Text
Amps L1 L2 L3 XXXX Amps
Volts AB BC CA XXXX Volts
Active Chilled Water Setpoint XXX.X F / C
Active Current Limit Setpoint XXX.X F / C
Refrigerant Monitor XXX.X Ppm
Compressor Starts XXXX Integer
Compressor Running Time XX:XX Hours:Minute
Compressor Rfgt Discharge Temp XXX.X F / C
Evap Entering Water Temp XXX.X F / C
Evap Leaving Water Temp XXX.X F / C
Evap Sat Refrigerant Temp XXX.X F / C
Evap Rfgt Pressure XXX.X psi / kPa
Evap Approach Temp: XXX.X F / C
Evap Water Flow Switch Status Text
Cond Entering Water Temp XXX.X F / C
Cond Leaving Water Temp XXX.X F / C
Cond Sat Rfgt Temp XXX.X F / C
Cond Rfgt Pressure XXX.X psi / kPa
Condenser Approach Temp XXX.X F / C
Cond Water Flow Switch Status Text
± XXX.X F / C
± XXX.X F / C
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Operator Interface Controls
Settings Screen
The Settings screen provides the user the ability to adjust settings. The layout
provides a list of sub-menus, organized by typical subsystem.
Figure 29. Settings Screen
Table 20 Settings Screen Items
Description Resolution or (Text), Default Units
Chiller
Front Panel Chilled Water Setpt ± XXX.X (3)
Front Panel Current Limit Setpt XXX (4) Percent RLA
Front Panel Base Load Cmd On/Auto Text
Front Panel Base Load Setpt XXX Percent
Front Panel Ice Build Cmd On/Auto Text
Front Panel Ice Termn Setpt XXX.X F / C
Ice to Normal Cool Timer Setpt (0-10), 5 min Minutes
Differential to Start XXX.X F / C
Differential to Stop XXX.X F / C
Setpoint Source (BAS/Ext/FP, Ext/ Front Panel, Front Panel),
BAS/Ext/FP
Features
Chilled Water Reset (Constant, Outdoor, Return, Disable), Disable Text
Return Reset Ratio XXX Percent
Return Start Reset XXX.X F / C
Return Maximum Reset XXX.X F / C
Text
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Table 20 Settings Screen Items
Description Resolution or (Text), Default Units
Outdoor Reset Ratio XXX Percent
Outdoor Start Reset XXX.X F / C
Outdoor Maximum Reset XXX.X F / C
Ext Chilled Water Setpoint (Enable, Disable), Disable Text
Ext Current Limit Setpoint (Enable, Disable), Disable Text
Ice Building (Enable, Disable), Disable Text
Ext Base Loading Setpoint (Enable, Disable), Disable Text
Mode Overrides
Evap Water Pump (Auto, On), Auto Text
Cond Water Pump (Auto, On), Auto (8) Text
Expansion Valve Control (Auto, Manual) Auto Text
Slide Valve Control (Auto, Manual) Auto Text
Service Pumpdown Status: (Avail, Not Avail, Pumpdown) Text
Display Settings
Date Format ("mmm dd, yyy", "dd-mmm-yyyy"),
"mmm dd, yyy
Date Text
Text
Time Format (12-hour, 24-hour), 12-hour Text
Time of Day Text
Keypad/Display Lockout (Enable, Disable), Disable (5) Text
Display Units (SI, English) English Text
Pressure Units (Absolute, Gauge), Absolute Text
Language Selection Downloaded fron TechView Text
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Operator Interface Controls
Diagnostic Screen
Figure 30. Diagnostics Screen
The diagnostic screen is accessible by depressing the Alarms enunciator. A
verbal description will be provided.
A scrollable list of the last (up to 10) active diagnostics is presented. Performing a “Reset Diags” will reset all active diagnostics regardless of type,
machine or circuit. The scrollable list will be sorted by time of occurrence.
If a informational warning is present, the "Alarms" key will be present but not
flashing. If a diagnostic shutdown (normal or immediate)has occurred, the
"Alarm" key will display that is flashing. If no diagnostics exist, the "Alarm" key
will not be present.
The "Operating Mode At Last Diagnostic" text above the most recent diagnostic will display a sub-screen listing the operating mode and submodes at the
time of the last diagnostic.
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TechView
TechView is the PC (laptop) based tool used for servicing Tracer CH530
Chillers. Technicians that make any chiller control modification or service any
diagnostic with Tracer CH530 must use a laptop running the software
application “TechView.” TechView is a Trane application developed to minimize
chiller downtime and aid the technicians' understanding of the chiller
operation and service requirements.
NOTE: Important: Performing any Tracer CH530 service functions should be
done only by a properly trained service technician. Please contact your local
Trane service agency for assistance with any service requirements.
TechView software is available via Trane.com.
(http://www.trane.com/commercial/software/tracerch530/)
This download site provides a user the TechView installation software and
CH530 main processor software that must be loaded onto their PC in order to
service a CH530 main processor. The TechView service tool is used to load
software into the Tracer CH530 main processor.
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TechView
Minimum PC requirements to install and operate TechView
• Pentium II or higher processor
• 128Mb RAM
• 1024 x 768 resolution of display
• 56K modem
• 9-pin RS-232 serial connection
• Operating system - Windows 2000
• Microsoft Office (MS Word, MS Access, MS Excel)
• Parallel Port (25-pin) or USB Port
NOTE: TechView was designed for the preceding listed laptop configuration.
Any variation will have unknown results. Therefore, support for TechView is
limited to only those operating systems that meet the specific configuration
listed here. Only computers with a Pentium II class processor or better are
supported; Intel Celeron, AMD, or Cyrix processors have not been tested.
TechView is also used to perform any CH530 service or maintenance
function. Servicing a CH530 main processor includes:
• Updating main processor software
• Monitoring chiller operation
• Viewing and resetting chiller diagnostics
• Low Level Intelligent Device (LLID) replacement and binding
• Main processor replacement and configuration modifications
• Setpoint modifications
• Service overrides
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