Trane Tracer TD7 User Manual

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User

Tracer™ TD7 with UC 80

for RTHD chillers

uid

LC-SVU006A-E

Original instruction

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ll rights reserved

This document and the information in it are the property of Trane and may not be used or re Trane reserves the ri to its content without obligation to noti

roduced in whole or in part, without the written permission of Trane.

ht to revise this publication at any time and to make changes

y any person of such revision or change.

Trademark

TD7, RTHD Trane, the Trane logo, and Tracer are trademarks of Trane. All trademarks

erenced in this document are the trademarks of their respective owners.

RLC-SVU006A-E4

Page 3

Table of Contents

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....................................................................................................

..................................................................................................

RTU Protocol

Ove

...............................................................................................................................

...........................................................................................................

3Co

............................................................................................................................

...............................................................................................................

...............................................................................................

General Recommendations ................................................................................................... 4

Units with Nitrogen Charge Option .....................................................................................

Installer-Supplied Components.............................................................................................

Power Supply Wiring ..............................................................................................................

Control Power Supply ............................................................................................................

Motor Cable .................................................................................................................................................

Motor Rotation Check .................................................................................................................................

AC Mains Connection .................................................................................................................................

Interconnecting Wiring ...........................................................................................................

Chilled Water Pump Contro

Programmable Relays ............................................................................................................

Relay Assignments Using Tracer™ TU ..................................................................................

Low Voltage Wiring ................................................................................................................

Emergency Stop ..........................................................................................................................................

External Auto/Stop ......................................................................................................................................

Ice Building Option ...............................................................................................................

External Chilled Water Setpoint (ECWS) Option................................................................

External Demand Limit Setpoint (EDLS) Option ..............................................................

EDLS and ECWS Analog Input Signal Wiring Details:

Chilled Water Reset (CWR)

Communications Interface

LonTalk™ Interface (LCI-C) ........................................................................................................................ 12

BACnet Protocol ........................................................................................................................................12

BACnet Testing Laboratory (BTL) Certiﬁ cation ......................................................................................... 12

dbus

................................................................................................................................12

rview

UC800 Speciﬁ cations

Wiring and Port Descriptions ....................................................................................................................1

mmunication Interface

otary Switches ..........................................................................................................................................1

LED Description and Operation ................................................................................................................1

Tracer TD7 Operator Interface ..............................................................................................

Tr a cer™ TU

tarter Diagnostics

Main Processor Diagnostics ................................................................................................20

Communication Diagnostics

Operator Display Diagnostics and Messages ....................................................................2

RLC-SVU006A-E

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nstallation Electrical

•

Always refer to wiring diagrams shipped with

in d

(

•

discharged.

•

)

bef

)

disch

in p

)

Important:

To prevent control malfunctions, do not run

General Recommendation

As you review this manual, keep in mind that:

All ﬁ eld-installed wiring must conform to European

uidelines and any applicable local codes. Be sure to satisfy proper equipment grounding requirements per European guidelines.

Compressor motor and unit electrical data (including

motor kW, voltage utilization range, rated load amps) is listed on the chiller nameplate.

All ﬁ eld-installed wiring must be checked for proper

terminations, and for possible shorts or grounds.

ote

hiller or unit submittal for speciﬁ c electrical chematic and connection information

ARNIN

Proper Field Wiring and Grounding Required

All ﬁ eld wiring MUST be performed by qualiﬁ ed personnel. Improperly installed and grounded ﬁ eld wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for ﬁ eld wiring installation and grounding as described in local electrical codes. Failure to follow code could result

eath or serious injury.

ARNIN

Hazardous Voltage w/Capacitors!

Disconnect all electric power, including remote disconnects and discharge all motor start/run and AFD

Adaptive Frequency™ Drive) capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized.

For variable frequency drives or other energy storin

components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors. Verify with an appropriate voltmeter that all capacitors have

ARNIN

Hazardous Voltage - Pressurized Burning Fluid

efore removing compressor terminal box cover for

servicing, or servicing power side of control panel,

LOSE COMPRESSOR DISCHARGE SERVICE VALVE

and disconnect all electric power including remote

isconnects. Discharge all motor start/run capacitors.

Follow lockout/tagout procedures to ensure the

ower cannot be inadvertently energized. Verify with

an appropriate voltmeter that all capacitors have

arged.

he compressor contains hot, pressurized refrigerant.

otor terminals act as a seal against this refrigerant.

are should be taken when servicing NOT to damage or

oosen motor terminals.

Do not operate compressor without termina

lace.

Failure to follow all electrical safety precautions could result in death or serious injury

For additional information regarding the safe discharge

f capacitors, see “Adaptive Frequency™ Drive (AF apacitor Discharge,” p. 28 and PROD-SVB06A-EN.

TICE

Use Copper Conductors Only!

Unit terminals are not designed to accept other types of conductors. Failure to use copper conductors could

t in equipment damage

resu

ow voltage wiring (<30 V) in conduit with

onductors carrying more than 30 volts.

box cover

DC bus capacitors retain hazardous voltages after

nput power has been disconnected. Follow proper

lockout/tagout procedures to ensure the power cannot

e inadvertently energized. After disconnecting input ower, wait ﬁ ve (5) minutes for the DC capacitors to

discharge, then check the voltage with a voltmeter.

ake sure DC bus capacitors are discharged (0 VDC

ore touching any internal components

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

For additional information regarding the safe discharg

f capacitors, see “Adaptive Frequency™ Drive (AF apacitor Discharge,” p. 28 and PROD-SVB06A-EN.

RLC-SVU006A-E4

Page 5

in d

Table 1. Capacitor Discharge Times

]

EXV

•

ﬁ

(

nstallation Electrical

In case of drive servicing only

ARNIN

DISCHARGE TIME!

Frequency converters contain DC-link capacitors that can remain charged even when the frequency converter is not powered. To avoid electrical hazards, disconnect AC mains, any permanent magnet type motors, and any remote DClink power supplies, including battery backups, UPS and DC-link connections to other frequency converters. Wait for the capacitors to fully discharge before performing any service or repair work. The amount of wait time is listed in the Discharge Time table. Failure to wait the speciﬁ ed time after power has been removed before doing service or repair could result

eath or serious injury.

olta

80-500 V 90-250 kW

15-800 kW

inimum waitin

ime [min

Units with Nitrogen Charge Optio

For units with nitrogen charge option (model number digit 15 = 2), the unit must NOT have shore power, or unit power applied until the unit has been charged.

pplying power will drive

inhibit sufﬁ cient vac for unit charging.

valves closed, and will

Installer-Supplied Component

Customer wiring interface connections are shown in

e electrical schematics and connection diagrams that

t are shipped with the unit. The installer must provide the followin

Power supply wiring (in conduit) for all ﬁ eld-wired

connections.

All control (interconnecting) wiring (in conduit) for

ﬁ eld supplied devices

Fused-disconnect switches or circuit breakers.

components if not ordered with the unit:

Power Supply Wirin

ARNIN

Proper Field Wiring and Grounding Required

All ﬁ eld wiring MUST be performed by qualiﬁ ed

ersonnel. Improperly installed and grounded ﬁ eld wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for

eld wiring installation and grounding as described in

our local electrical codes. Failure to follow code could

esult in death or serious injury

ll power supply wiring must be sized and selected

ccordingly by the project engineer in accordance

ith EN 60204.

ll wiring must comply with local codes. The installing

or electrical) contractor must provide and install the

ystem interconnecting wiring, as well as the power upply wiring. It must be properly sized and equipped

ith the appropriate fused disconnect switches

The type and installation location(s) of the fused

isconnects must comply with all applicable codes.

OTICE:

se Copper Conductors Only!

nit terminals are not designed to accept other types

of conductors. Failure to use copper conductors could

esult in equipment damage

Cut holes into the sides of the control panel for the

ppropriately-sized power wiring conduits. The wiring

s passed through these conduits and connected to the

terminal blocks, optional unit-mounted disconnects, or

ACR type breakers.

The hi through patch plate on the right side of the panel. The low voltage connections are made through knockouts

may be required for each 115 volt power supply to the

h voltage ﬁ eld-provided connections are made

rovided on the left side of the panel. Additional grounds

nit. Green lugs are provided for 115V customer wirin

Control Power Supply

The unit is equipped with a control power transformer.

t is not necessary to provide additional control power

oltage to the unit. No other loads should be connected

to the control power transformer

ll units are factory-connected for appropriate labeled

oltages.

RLC-SVU006A-E

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nstallation Electrical

•

)

•

• T

•

Motor Cable

The motor must be connected to terminals U/T1/96, V/ T2/97, W/T3/98. Earth (ground) to terminal 99. All types of three-phase asynchronous standard motors can be used with a frequency converter unit. The factory setting is for clockwise rotation with the frequency converter output connected as follows:

Terminal no.

96, 97, 98, 99

uncti

ains U/T1, V/T2, W/T3

arth (ground)

Motor Rotation Chec

The direction of rotation can be changed by switching two phases in the motor cable or by changing the setting of 4-10 Motor Speed Direction.

erminal U/T1/96

connected to U-phase

Terminal V/T2/97

connected to V-phase

Terminal W/T3/98

connected to W-phase

A motor rotation check can be performed using1-28 Motor Rotation Check and the display

ollowing the steps shown in

AC Mains Connectio

Size wiring is based upon the input current of the

requency converter

Comply with local and national electrical codes for

cable size

onnect 3-phase AC input power wiring to terminals

L1, L2, and L3 (see Figure 1

Mains connection

otor connection

Earth (ground) the cable in accordance with the

instructions provided

All frequency converters may be used with an isolated

input source as well as with earth (ground) reference

ower lines. When supplied from an isolated mains

source (IT mains or ﬂ oating delta) or TT/TN-S mains

ith a grounded leg (grounded delta), set 14-50 RFI Filter to OFF When off, the internal RFI ﬁ lter capacitors between the chassis and the intermediate circuit are isolated to avoid damage to the intermediate circuit and to reduce earth (ground) capacity currents in accordance with IEC 61800-3.

RLC-SVU006A-E4

Page 7

Table 5. Pump Relay Operation

•

)

•

nstallation Electrical

Interconnecting Wirin

hilled Water Pump Control

NOTICE:

quipment Damage!

If the microprocessor calls for a pump to start and water does not ﬂ ow, the evaporator may be damaged catastrophically. It is the responsibility of the installing contractor and/or the customer to ensure that a pump will always be running when called upon by the chiller controls.

An evaporator water pump output relay closes when the chiller is given a signal to go into the 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.

The relay output is required to operate the Evaporator Water Pump (EWP) contactor. Contacts should be compatible with 115/240 VAC control circuit. Normally, the EWP relay follows the AUTO mode of the chiller.

henever the chiller has no diagnostics and is in the AUTO mode, regardless of where the auto command is coming from, the normally open relay is energized. When the chiller exits the AUTO mode, the relay is timed to open in an adjustable (using TU) 0 to 30 minutes. The non-AUTO modes in which the pump is stopped, include Reset, Stop, External Stop, Remote Display Stop,

topped by Tracer, Start Inhibited by Low Ambient Temp,

and Ice Building complete.

uto mode

f evaporator water ﬂ ow is lost once it had been established, the EWP relay remains energized and a non-latching diagnostic is generated. If ﬂ ow returns, the

iagnostic is cleared and the chiller returns to normal

operation.

n general, when there is either a non-latching or latchin

iagnostic, the EWP relay is turned off as though there

as a zero time delay. Exceptions whereby the relay

continues to be energized occur with:

ow Chilled Water Temp. diagnostic (non-latching)

unless also accompanied by an Evap Leaving Water

Temperature Sensor Diagnostic

oss of Evaporator Water Flow diagnostic (non-

latching) and the unit is in the AUTO mode, after

nitially having proven evaporator water ﬂ ow.

rogrammable Relay

programmable relay concept provides for enunciation of certain events or states of the chiller, selected from a list of likely needs, while only using four physical output

elays, as shown in the ﬁ eld wiring diagram. The four elays are provided (generally with a Quad Relay Output

LID) as part of the Programmable Relay Option. The

elay’s contacts are isolated Form C (SPDT), suitable

for use with 120 VAC circuits drawing up to 2.8 amps

nductive, 7.2 amps resistive, or 1/3 HP and for 240 VAC

circuits drawing up to 0.5 amp resistive.

The list of events/states that can be assi

rogrammable relays can be found in Table 6. The relay

ill be energized when the event/state occurs.

ned to the

Chiller Mod

ce Buildin

Tracer Override Close

ce Complete

iagnostics

When going from Stop to Auto, the EWP relay is energized immediately. If evaporator water ﬂ ow is not established in 20 minutes (for normal transition) or 4 minutes, 15 seconds (for pump commanded ON due to an override safety), the UC800 de-energizes the EWP relay and generates a non-latching diagnostic. If ﬂ ow returns (e.g. someone else is controlling the pump), the diagnostic is cleared, the EWP is re-energized, and normal control resumed.

elay Operatio

nstant close nstant close

Timed Open

nstant Open nstant Open

RLC-SVU006A-E

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nstallation Electrical

Table 6. Chiller events/status descriptions

“

)

vent/Stat

larm - Latchin

larm - Auto Rese

lar

arnin

Chiller Limit Mode This output is true whenever the chiller has been running in one of the Unloadin

ompressor Runnin

escriptio

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

ircuit. This classiﬁ cation does not include informational diagnostics.

This output is true whenever there is any active diagnostic that could automatically

lear, that effects the Chiller, the Circuit, or any of the Compressors on a circuit. This classiﬁ cation does not include informational diagnostics. If all of the auto resetting diagnostics were to clear, this output would return to a false condition.

This output is true whenever there is any diagnostic effecting any component, whether latching or automatically clearing. This classiﬁ cation does not include informational diagnostics.

This output is true whenever there is any informational diagnostic effecting any

omponent, whether latching or automatically clearing.

types of limit modes (Condenser, Evaporator, Current Limit or Phase Imbalance

imit) 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 becomin true. It will become false, if no Unload limits are present for 1 minute. The ﬁ lter 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

nnunciation, 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

nnunciation outputs

The output is true whenever any compressors are started or running on the

hiller and false when no compressors are either starting or running on the chiller.

This status may or may not reﬂ ect the true status of the compressor in Service

umpdown if such a mode exists for a particular chiller.

Chiller Head Pressure Relief

equest Rela

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 speciﬁ ed by the Chiller Head Relief Relay Filter Time. The Chiller

ead Relief Relay Filter Time is a service setpoint. The relay output is de-energized

nytime the chiller exits all above modes continuously for the duration speciﬁ ed b

the same Chiller Head Relief Relay Filter Time.

RLC-SVU006A-E4

Page 9

)

Table 7. Default assignments

To prevent control malfunctions, do not run

nstallation Electrical

elay Assignments Using

Tracer™ TU

Tracer™ TU Service Tool is used to install the Programmable Relay Option package and assign any of the above list of events or status to each of the four relays provided with the option. (See “Tracer™ TU,” for more information on the Tracer TU service tool. The relays to be programmed are referred to by the relay’s terminal numbers on the LLID board 1A10

The default assignments for the four available relays of the Programmable Relay option are:

ela

elay 0Terminals J2-1,2,3: elay 1Terminals J2-4,5,6: elay 2Terminals J2 - 7,8,9: elay 3Terminals J2 -10,11,12: CMP Running Rela

If any of the Alarm/Status relays are used, provide electrical power, 115 VAC with fused-disconnect to the panel and wire through the appropriate relays (terminals on 1A10). Provide wiring (switched hot, neutral, and

round connections) to the remote annunciation devices. Do not use power from the chiller’s control panel transformer to power these remote devices. Refer to the ﬁ eld diagrams which are shipped with the unit

ead press.

imit mode

lar

ow Voltage Wirin

The remote devices described below require low voltage

iring. All wiring to and from these remote input devices

to the Control Panel must be made with shielded, twisted

air conductors. Be sure to ground the shielding only at

the panel.

low voltage wiring (<30 V) in conduit with

onductors carrying more than 30 volts.

mergency Sto

C800 provides auxiliary control for a customer

peciﬁ ed/installed latching trip out. When this customer-

urnished remote contact 5K22 is provided, the chiller

ill run normally when the contact is closed. When the

contact opens, the unit will trip on a manually resettable

iagnostic. This condition requires manual reset at the

chiller switch on the front of the control panel

Connect low voltage leads to terminal strip locations 1A12. Refer to the ﬁ eld diagrams that are shipped with the unit.

ilver or gold-plated contacts are recommended. These

customer-furnished contacts must be compatible with 24

DC, 12 mA resistive load.

xternal Auto/Sto

f the unit requires the external Auto/Stop function, the

nstaller must provide leads from the remote contacts 5K21 to the proper terminals of the LLID 1A12 on the control panel.

he chiller will run normally when the contacts are closed. When either contact opens, the compressor(s), if operating, will go to the RUN:UNLOAD operating mode

nd cycle off. Unit operation will be inhibited. Closure of the contacts will permit the unit to return to normal operation.

ield-supplied contacts for all low voltage connections must be compatible with dry circuit 24 VDC for a 12 mA resistive load. Refer to the ﬁ eld diagrams that are

ipped with the unit.

RLC-SVU006A-E

Page 10

nstallation Electrical

When in the Ice Building mode, and the

These customer-supplied contact closures must be compatible with 24 VDC, 12 mA resistive load. Silver or gold plated contacts are recommended.

Ice Building Optio

UC800 provides auxiliary control for a customer speciﬁ ed/installed correct with contact closure 5K20 for ice building if so conﬁ gured and enabled. This output is known as the Ice Building Status Relay. The normally open contact will be closed when ice building is in progress and open when ice terminated either through reached or removal of the Ice Building command. This output is for use with the ice storage system equipment or controls (provided by others) to signal the system

es required as the chiller mode changes from

chan

ice building” to “ice complete”. When contact 5K12 is

rovided, the chiller will run normally when the contact

s open.

UC800 will accept either an isolated contact closure (External Ice Building command) or a Remote Communicated input (Tracer) to initiate and command the Ice Building mode.

UC800 also provides a “Front Panel Ice Termination

etpoint”, settable through Tracer™ TU, and adjustable

from 20 to 31°F (-6.7 to -0.5°C) in at least 1°F (1°C)

ncrements.

vaporator entering water temperature drops

elow the ice termination setpoint, the chiller erminates the Ice Building mode and changes o the Ice Building Complete Mode.

uilding has been normally

ce Termination setpoint being

Connect leads from 5K12 to the proper terminals of 1A15. Refer to the ﬁ eld diagrams which are shipped with

he unit.

Silver or gold-plated contacts are recommended. These customer furnished contacts must be com

4 VDC, 12 mA resistive load.

atible with

External Chilled Water Setpoint

ECWS) Optio

The UC800 provides inputs that accept either 4-20 mA or

-10 VDC signals to set the external chilled water setpoint (ECWS). This is not a reset function. The input deﬁ nes the setpoint. This input is primarily used with generic BAS

building automation systems). The chilled water setpoint set via the Tracer TD7 or through digital communication with Tracer (Comm4). The arbitration of the various chilled water setpoint sources is described in the ﬂ ow charts at the end of the section

The chilled water setpoint may be changed from a

emote location by sending either a 2-10 VDC or 4-20 mA

signal to the 1A14, terminals 5 and 6 LLID. 2-10 VDC and

-20 mA each correspond to a 10 to 65°F (-12 to 18°C)

external chilled water setpoint.

The following equations apply:

Voltage

As generated from external source VDC=0.1455*(ECWS) + 0.545

As processed by UC800 ECWS=6.875*(VDC) - 3.7

Current Signal

As generated from external source mA=0.2909(ECWS) + 1.090

As processed by UC800 ECWS=3.4375(mA) - 3.75

ignal

TICE

Equipment Damage!

Freeze inhibitor must be adequate for the leaving water temperature. Failure to do so will result in dama system components.

racer™ TU must also be used to enable or disable Ice

Machine Control. This setting does not prevent the Tracer

rom commanding Ice Building mode.

Upon contact closure, the U building mode, in which the unit runs fully loaded at all times. Ice building shall be terminated either by opening the contact or based on the entering evaporator water temperature. UC800 will not permit the ice building mode to be reentered until the unit has been switched out of ice building mode (open 5K12 contacts) and then switched back into ice building mode (close 5K12 contacts.)

In ice building, all limits (freeze avoidance, evaporator, condenser, current) will be ignored. All safeties will be enforced.

If, while in ice building mode, the unit gets down to the freeze stat setting (water or refrigerant), the unit will shut down on a manually resettable diagnostic, just as in normal operation.

800 will initiate an ice

e to

f the ECWS input develops an open or short, the LLID will report either a very high or very low value back to

he main processor. This will generate an informational

iagnostic and the unit will default to using the Front anel (TD7) Chilled Water Setpoint

Tracer TU Service Tool is used to set the input signal type from the factory default of 2-10 VDC to that of 4-20 mA.

racer TU is also used to install or remove the External Chilled Water Setpoint option as well as a means to enable and disable ECWS.

External Demand Limit Setpoint

EDLS) Optio

Similar to the above, the UC800 also provides for an optional External Demand Limit Setpoint that will accept either a 2-10 VDC (default) or a 4-20 mA signal. The

emand Limit Setting can also be set via the Tracer TD7 or through digital communication with Tracer (Comm4). The arbitration of the various sources of demand limit is

escribed in the ﬂ ow charts at the end of this section. The

External Demand Limit Setpoint may be changed from a

emote location by hooking up the analog input signal to

he 1A14 LLID terminals 2 and 3. Refer to the following

paragraph on Analog Input Signal Wiring Details.

RLC-SVU006A-E4

Page 11

For proper unit operation, BOTH the EDLS

)

•

(

))

)

doo

)

nstallation Electrical

The following equations apply for EDLS:

enerated from

As external sourc

As processed by

Voltage Signa

VDC+0.133*(%)-6.

%=7.5*(VDC)+45.

Current Signal

mA=0.266*(%)-12.

%=3.75*(mA)+45.

If the EDLS input develops an open or short, the LLID will report either a very high or very low value back to the man processor. This will generate an informational diagnostic and the unit will de

ault to using the Front

Panel (Tracer TD7) Current Limit Setpoint

The Tracer™ TU Service Tool must be used to set the input signal type from the factory default of 2-10 VDC to

4-20 mA current. Tracer TU must be also be used

that to install or remove the External Demand Limit Setpoint Option for ﬁ eld installation, or can be used to enable or disable the feature (if installed).

EDLS and ECWS Analog Input

ignal Wiring Details

Both the ECWS and EDLS can be connected and setup as either a 2-10 VDC (factory default), 4-20 mA, or resistance input (also a form of 4-2OmA) as indicated

elow. Depending on the type to be used, the Tracer

ervice Tool must be used to conﬁ gure the LLID and the MP for the proper input type that is being used. This is accomplished by a setting change on the Custom Tab of the Conﬁ guration View within Tracer TU.

nd ECWS settings MUST be the same 2-10 VDC or 4-20mA), even if only one nput is to be used.

he J2-3 and J2-6 terminal is chassis grounded and terminal J2- 1 and J2-4 can be used to source 12 VD The ECL

uses terminals J2-2 and J2-3. ECWS uses terminals J2-5 and J2-6. Both inputs are only compatible with high-side current sources.

Chilled Water Reset (CWR

C800 resets the chilled water temperature set point based on either return water temperature, or outdoor air temperature. Return Reset is standard, Outdoor Reset is optional.

The following shall be selectable:

ne of three Reset Types: None, Return Water

Temperature Reset, Outdoor Air Temperature Reset, or

onstant Return Water Temperature Reset.

Reset Ratio Set Points

For outdoor air temperature reset there shall be both

ositive and negative reset ratio’s

Start Reset Set Points

Maximum Reset Set Points.

The equations for each type of reset are as follows:

eturn

CWS’ = CWS + RATIO

nd CWS’ > or = CW

nd CWS’ - CWS < or = Maximum Reset

utdoor

CWS’ = CWS + RATIO * (START RESET - TOD

nd CWS’ > or = CW

nd CWS’ - CWS < or = Maximum Reset

wher

CWS’ is the new chilled water set point or the “reset CWS”

is the active chilled water set point before any reset

as occurred, e.g. normally Front Panel, Tracer, or ECW

RESET RATIO is a user adjustable gain

TART RESET is a user adjustable reference

TOD is the outdoor temperature

TWE is entering evap. water temperature

is leaving evap. water temperature

MAXIMUM RESET is a user adjustable limit providing the maximum amount of reset. For all types of reset, CWS’ - CWS < or = Maximum Reset.

START RESET - (TWE - TWL

2-10 VDC, 4-20mA

Resister

I = 20/(R + 200)

RLC-SVU006A-E

J2-1 & 4 Dual J2-2 & 5 Analog J2-3 & 6 I/O LLID

eset

eturn

eset

ati

0 to

80%

tart

eset

to 30 F to 20 F

2.2 to

6.7 C t

10 to

54.4 C

eset

0.0 to

1.1 C

to 20 F

0.0 to

1.1 C

ncrement

IP UnitsSI Unit

actor

efault

Page 12

nstallation Electrical

)

(

ﬁ

For more information see ACC-SVN100*-EN.

)

In addition to Return and Outdoor Reset, the MP provides a menu item for the operator to select a Constant Return Reset. Constant Return Reset will reset the leaving water temperature set point so as to provide a constant entering water temperature. The Constant

eturn Reset equation is the same as the Return Reset equation except on selection of Constant Return Reset, the MP will automatically set Ratio, Start Reset, and Maximum Reset to the following.

RATIO = 100

START RESET = Design Delta Temp

MAXIMUM RESET = Design Delta Temp.

The equation for Constant Return is then as follows:

CWS’ = CWS + 100% (Design Delta Temp. - (TWE - TWL)) and CW

and CWS’ - CWS < or = Maximum Reset

When any ty the Active CWS toward the desired CWS’ (based on the above equations and setup parameters) at a rate of 1 degree F every 5 minutes until the Active CWS equals the desired CWS’. This applies when the chiller is running.

When the chiller is not running, CWS is reset immediately (within one minute) for Return Reset and at a rate of 1 degree F every 5 minutes for Outdoor Reset. The chiller will start at the Differential to Start value above a fully reset CWS or CWS’ for both Return and Outdoor Reset.

’ > or = CW

e of CWR is enabled, the MP will step

Communications Interfac

LonTalk™ Interface (LCI-C

UC800 provides an optional LonTalk™ Communication Interface (LCI-C) between the chiller and a Building Automation System to provide “ compatible device and the Chiller. The inputs/outputs include both mandatory and optional network variables as established by the LonMark Functional Chiller Pro

040.

ateway” functionality between a LonTalk

BAS). An LCI-C LLID shall be used

BACnet Protocol

The Building Automation and Control Network (BACnet

nd ANSI/ASHRAE Standard 135-2004) protocol is a standard that allows building automation systems or components from different manufacturers to share

nformation and control functions. BACnet provides

building owners the capability to connect various

ypes of building control systems or subsystems ogether for a variety of reasons. In addition, multiple

vendors can use this protocol to share information for

onitoring and supervisory control between systems

nd devices in a multi-vendor interconnected system. The BACnet protocol identiﬁ es standard objects (data points) called BACnet objects. Each object has a deﬁ ned list of properties that provide information about that object. BACnet also deﬁ nes a number of standard

lication services that are used to access data and

anipulate these objects and provides a client/server

communication between devices.

BACnet Testing Laboratory (BTL Certiﬁ cation

All Tracer™ UC800 controllers are designed to support BACnet communication protocol. In

ddition,someparticular revisions of the UC800 ﬁ rmware

ave been tested and have achieved BTL certiﬁ cation by

n ofﬁ cial BACnet testing laboratory. For more details,

efer to the BTL website at www.bacnetassociation.org.

Modbus RTU Protocol

Modicon Communication Bus (Modbus) is an application layer-messaging protocol that, like BACnet, provides client/server communication between devices over

variety of networks. During communications on a Modbus RTU network, the protocol determines how each controller will know its device address, recognize

message addressed to its device, determine what

ction to take, and extract any data or other information contained in the message. Controllers communicate using a master/slave technique, where

evice (master) can initiate transactions (queries). Other

evices (slaves) respond by supplying the requested

ata to the master or by taking the action requested in

he query.

he master can address individual slaves or it can

nitiate a broadcast message to all slaves. In turn, the

slaves respond to queries that are addressed to them

ndividually or broadcasted. The Modbus RTU protocol

establishes the format for the master’s query by placing

nto it the device address, a function code deﬁ ning the

equested action, any data to be sent, and an error-

checking ﬁ eld

y, only one

RLC-SVU006A-E4

Page 13

Overvie

•

)

•

)

Valid addresses are 001 to 127 for BACnet and 001

THD units utilize the following control/interface

components:

racer™ UC800 Controlle

racer TD7 Operator Interfac

UC800 Speciﬁ cations

This section covers information pertaining to the UC800 controller hardware.

Wiring and Port Description

Figure 3 illustrates the UC800 controller ports, LEDs, rotary switches, and wiring terminals. The numbered list

ollowing Figure 3 corresponds to the numbered callouts

in the illustration.

ntrols

ottom View

. Rotary Switches for setting BACnet® MAC address or MODBUS ID

. LINK for BACnet MS/TP, or MODBUS Slave (two terminals, ±). Field

wired if used

3. LINK for BACnet MS/TP, or MODBUS Slave (two terminals, ±). Field wired if used

4. Machine bus for existing machine LLIDs (IPC3 Tracer bus 19.200 baud). IPC3 Bus: used for Comm4 using TCI or LonTalk® using LCI-C

5. Power (210 mA at 24 Vdc) and ground terminations (same bus as

tem 4). Factory wired

. Not used

. Marquee LED power and UC800 Status indicator.

. Status LEDs for the BAS link, MBus link, and IMC link

9. USB device type B connection for the service tool (Tracer TU)

0. The Ethernet connection can only be used with the Tracer AdaptiView isplay

1. USB Host (not used)

RLC-SVU006A-E

ront Vie

Communication Interfaces

There are four connections on the UC800 that support the communication interfaces listed. Refer to Figure 3,

. 13 for the locations of each of these ports.

BACnet MS/T

MODBUS Slave

onTalk using LCI-C (from the IPC3 bus

Comm 4 using TCI (from the IPC3 bus

Rotary Switche

There are three rotary switches on the front of the UC800 controller. Use these switches to deﬁ ne a three-digit

ddress when the UC800 is installed in a BACnet or

MODBUS system (e.g., 107, 127, etc.)

o 247 for MODBUS.

ED Description and Operation

There are 10 LEDs on the front of the UC800. Figure 4

hows the locations of each LED and Table 8, p. 14

escribes their behavior in speciﬁ c instances

Page 14

ntrol

LED

ﬁ

•

)

•

C800 Statu

wered. If the Marquee LED is green solid,

the UC800 is powered and no problems exist.

arquee

BUS, IM

thernet

ink

ervice

NOTICE

ectrical Noise

Maintain at least 6 inches between low-voltage (<30V) and high voltage circuits. Failure to do so could result in

ectrical noise that could distort the signals carried by

e the low-volta

ow power or malfunction. If the Marquee

ED is red solid, the UC800 is powered, but

there are problems present.

larm. The Marquee LED blinks Red when an

larm exists.

The

LED blinks green at the data transfer

rate when the UC800 transfers data to other

evices on the link.

The

LED blinks yellow at the data transfer

rate when the UC800 receives data from

ther devices on the link.

The link is connected and communicating.

The transfer rate when data ﬂ ow is active on the link.

The Service LED is solid green when pressed.

or qualiﬁ ed service technicians only. Do not se.

e wiring, including IPC.

LED is solid green if the Ethernet

CT LED blinks yellow at the data

Tracer TD7 Operator Interfac

nformation is tailored to operators, service technicians,

nd owners

hen operating a chiller, there is speciﬁ c information

you need on a day-to-day basis—setpoints, limits,

iagnostic information, and reports.

ay-to-day operational information is presented at the

isplay. Logically organized groups of information—

chiller modes of operation, active diagnostics, settings

nd reports put information conveniently at your

ngertips

Tr a cer™ T

The RTHD operator interface allows for daily operational

asks and setpoint changes. However, to adequately service chillers Tracer™ TU service tool is required. (Non-Trane personnel, contact your local Trane ofﬁ ce for software purchase information.) Tracer TU adds a level of sophistication that improves service technician effectiveness and minimizes chiller downtime. This

ortable PC-based service-tool software supports service nd maintenance tasks, and is required for software

upgrades, conﬁ guration changes and major service

sks

Tracer TU serves as a common interface to all Trane chillers, and will customize itself based on the properties of the chiller with which it is communicating. Thus, the service technician learns only one service interface.

he panel bus is easy to troubleshoot using

veriﬁ cation. Only the defective device is replaced. Tracer

can communicate with individual devices or groups

f devices.

All chiller status, machine con customizable limits, and up to 100 active or historic

iagnostics are displayed through the service-tool

software interface.

s and their respective Tracer TU indicators visually

conﬁ rm the availability of each connected sensor, relay,

nd actuator.

racer TU is designed to run on a customer’s laptop, connected to the Tracer control panel with a USB cable. Your laptop must meet the following hardware and software requirements:

1 GB RAM (minimum

1024 x 768 screen resoluti

CD-ROM driv

Ethernet 10/100 LAN card

An available USB 2.0 port

Microsoft® Windows® XP Professional operation system with Service Pack 3 (SP3) or Windows 7 Enterprise or Professional operating system (32-bit or 64-bit)

Microsoft .NET Framework 4.0 or later

guration settings,

sensor

RLC-SVU006A-E4

Page 15

Note

Tracer TU is designed and validated for this

For more information, see TTU-SVN01A-EN

ote

ntrols

inimum laptop conﬁ guration. Any variation

rom this conﬁ guration may have different results.

herefore, support for Tracer TU is limited to only

hose laptops with the conﬁ guration previously

peciﬁ ed.

racer TU Getting Started Guid

RLC-SVU006A-E

Page 16

Diagnostic

Diagnostic Name and Source: Name of Diagnostic and its source. Note that this is the exact text used in the User Interface and/or Service Tool displays.

ects Target: Deﬁ nes the “target” or what is affected

by the diagnostic. Usually either the entire Chiller, or a particular Circuit or Compressor is affected by the diagnostic (the same one as the source), but in special cases functions are modiﬁ ed or disabled by the diagnostic. None implies that there is no direct affect to the chiller, sub components or functional operation.

Design Note:

certain targets on its Diagnostics pages although

o the functionality implied by this table is supported. Targets such as Evap Pump, Ice Mode, Chilled Water Reset, External Set “Chiller” even though they do not imply a chiller shutdown – only a compromise of the speciﬁ c feature

Severity: Deﬁ nes the severity of the above effect.

Immediate means immediate shutdown of the affected

ortion, Normal means normal or friendly shutdown of the affected portion, Special Action means a special action or mode of operation (limp along) is invoked, but without shutdown, and Info means an Informational Note or Warning is generated. Design Note: Tracer TU does not support display of “Special Action”, on its Diagnostics pages, so that if a diagnostic has a special action deﬁ ned in the table below, it will be displayed only as “Informational Warning” as long as no circuit

r chiller shutdown results. If there is a shutdown and special action deﬁ ned in the table, then the Tracer TU Diagnostics Page display will indicate the shutdown type only

racer™ TU does not support the display

oints etc. – are displayed as simply

Persistence: Deﬁ nes whether or not the diagnostic and

ts effects are to be manually reset (Latched), or can be either manually or automatically reset when and if the condition returns to normal (Nonlatched).

Active Modes [Inactive Modes]

periods of operation that the diagnostic is active in

nd, as necessary, those modes or periods that it is

speciﬁ cally “not active” in as an exception to the active

odes. The inactive modes are enclosed in brackets, [ ].

ote that the modes used in this column are internal and

not generally annunciated to any of the formal mode

isplays.

riteria: Quantitatively deﬁ nes the criteria used in

generating the diagnostic and, if nonlatching, the criteria for auto reset. If more ex

o the Functional Speciﬁ cation is used

eset Level: Deﬁ nes the lowest level of manual

iagnostic reset command which can clear the iagnostic. The manual diagnostic reset levels in order of

priority are: Local or Remote. For example, a diagnostic

hat has a reset level of Remote, can be reset by either

remote diagnostic reset command or by a local iagnostic reset command.

elp Text: Provides for a brief description of what kind

of problems might cause this diagnostic to occur. Both control system component related problems as well as chiller application related problems are addressed (as can possibly be anticipated). These help messages will be updated with accumulated ﬁ eld experience with the chillers

States the modes or

lanation is necessary a hot link

RLC-SVU006A-E4

Page 17

Starter Diagnostic

]

alha

“

Cod

iagnostic Name

nd Sourc

hase Reversal

tarter Dry Run Testhiller

se Loss

omentary Power

wer Loss

evere Current

Imbalance

ffects arget

hiller

Severityersistenc

mmediate

tch

nlatch

nLatch

tch

ctive Modes

Inactive Modes

ompressor

nergized

to transition

ommand [All

Other Times

tarter Dry Run

tart Sequence

nd Run mode

ll compressor

running and topping modes all compressor

tarting and non-

running modes]

ll compressor

running modes

all compressor

tarting and non-

running modes]

ll Running Modes

Diagnostics

Criteri

phase reversal was detected on the incoming current. On a compressor startup the phase reversal logic must detect and trip in a maximum of 0.3 second from

ompressor start.

hile in the Starter Dry Run Mode either 50% Line Voltage was sensed at the Potential Transformers or 10 % RLA Current was

ensed at the Current Transformers.

No current was sensed on one or two

f the current transformer inputs while

running or starting (See Nonlatching Power

oss Diagnostic for all three phases lost

hile running). Must hold = 20% RLA. ust trip = 5% RLA. Time to trip shall be

longer than guaranteed reset on Starter

odule at a minimum, 3 seconds maximum.

ctual design trippoint is 10%. The actual design trip time is 2.64 seconds. b) If Phase reversal protection is enabled and current is not sensed on one or more current

former inputs. Logic will detect and trip in maximum of 0.3 second from compressor

rt.

omentary Power Loss option disabled: No

ffect.

omentary Power Loss option enabled: A

loss of power on three line cycles or more

as detected. Diagnostic is reset in 30

econds.

ee Momentary Power Loss Protection

eciﬁ cation for additional information.

The compressor had previously established

urrents while running and then all three phases of current were lost. Design: Less than 10% RLA, trip in 2.64 seconds. This diagnostic will preclude the Phase Loss

iagnostic and the Transition Complete Input Opened Diagnostic from being called out. To prevent this diagnostic from occurring

ith the intended disconnect of main ower, the minimum time to trip must be reater than the guaranteed reset time of

the Starter module. Note: This diagnostic prevents nuisance latching diagnostics due to a momentary power loss – It does not

rotect motor/compressor from uncontrolled ower reapplication. See Momentary Power oss Diagnostic for this protection. This

diagnostic will auto reset in 10 seconds from its occurrence, and is not active during the

tart mode before the transition complete

input is proven. This prevents the chiller from

ycling due to some internal starter problem, s the starter would latch out on either a

Starter Fault Type 3” or a “Starter Did Not Transition” latching diagnostic. However true power loss occurring during a start would result in a misdiagnosis and the chiller would not automatically recover.

30% current imbalance has been detected n one phase relative to the average of all phases for 90 continuous seconds.

eset evel

emote

RLC-SVU006A-E

Page 18

Diagnostic

]

aes

al701

alSta

Tra

odu

alF5

alD6

Cod

iagnostic Name

nd Sourc

E9 Starter Fault Type Ihiller

ED Starter Fault Type IIhiller

F1Starter Fault Type III

Solid State Starter

Compressor Did Not

ccelerate: Shutdown

Transition Complete

FD Drive Faul

rter Did Not

nsition

ccelerate Full

ccel: Transition

nput Shorted

t Speed Input

Shorte

ffect arget

hiller

Severityersistence

mmediate

atch

tch

tch Start Mode

tch

ctive Modes

Inactive Modes

Starting - Y Delta

Starters Onl

Starting All types

f starter

tartin

Adaptive

requency Starter

Type]

ll The Solid State Starter Fault Relay is open

ll The AFD Drive Fault Relay is open

n the ﬁ rst check

fter transition.

re-Star

Criteri

This is a speciﬁ c starter test where 1M(1K1) is closed ﬁ rst and a check is made to ensure that there are no currents detected by the CT's. If currents are detected when only 1M is closed ﬁ rst at start, then one of the other

ontactors is shorted. . This is a speciﬁ c starter test where the

Shorting Contactor (1K3) is individually

nergized and a check is made to ensure that

there are no currents detected by the CT's. If

urrent is detected when only S is energized t Start, then 1M is shorted. b. This test in a. bove applies to all forms of starters (Note:

t is understood that many starters do not

onnect to the Shorting Contactor.).

s part of the normal start sequence to

pply power to the compressor, the Shortin Contactor (1K3) and then the Main Contactor (1K1) were energized. 1.6 seconds later there were no currents detected by the CT's for the last 1.2 seconds on all three

hases. The test above applies to all forms

f starters.

The Starter M transition complete signal in the designated time from its command to transition. The must hold time from the Starter M transition command is 1 second. The Must trip time from the transition command is

seconds. Actual design is 2.5 seconds. This diagnostic is active only for Y-Delta, AutoTransformer, Primary Reactor, and X-Line

tarters. The starter module did not receive an “U

to Speed” or “End of Ramp” signal from the SSS within 2.5 seconds after commanding a bypass, or after the maximum acceleration time had expired, whichever is longer. This diagnostic only applies to SSS/AFD.

The compressor did not come up to speed (get to <85%RLA) in the allotted time deﬁ ned by the Maximum Acceleration Timer

nd a transition was forced (motor put across

the line) at that time. This applies to all

tarter types. Note: Since RTHD SSS has no

forced transition capability, this info warning

an be followed with a “Compressor did not ccelerate fully” diagnostic above and an

rted start.

The compressor did not come up to speed (get to <85%RLA) in the allotted time deﬁ ned by the Maximum Acceleration Timer

nd and the start was aborted per the starter onﬁ guration selected.

The Transition Complete input is shorted before the compressor was started. This is

ctive for all electromechanical starters.

The “At Speed” input is shorted before the

ompressor was started. This is active for

lid state starters and AFD.

le did not receive a

evel

oca

emote

RLC-SVU006A-E4

Page 19

]

aes

oad

alnLa

Cod

Transition Complete

iagnostic Name

nd Sourc

nput Opened

t Speed Input

Opened

tor Current

verl

tarter Contactor nterrupt Failure

Over Voltage

nder Voltage

ffects arget

hiller

Severityersistenc

mmediate

mmediate nd Special

ction

tch

tch Chiller Energized

tch

ctive Modes

Inactive Modes

ll Running Modes

fter transition

ompleted

ll Running Modes

fter At Speed

rov

tarter Contactor

not Energized

Starter Contactor

nergized]

Diagnostics

Criteri

The Transition Complete input is open

ith the compressor motor running after a

uccessful completion of transition. This is

ctive only for all electromechanical starter

The “At Speed” input was found to be

pened with the compressor motor running fter successfully obtaining an at speed and

bypassed condition. This is active for solid

tate starters and AFD

Compressor current exceeded overload time

s. trip characteristic. For A/C products Must trip = 140% RLA, Must hold=125%, nominal trip 132.5% in 30 seconds

etected compressor currents greater than

0% RLA on any or all phases when the

ompressor was commanded off. Detection

time shall be 5 seconds minimum and

seconds maximum. On detection and until the controller is manually reset: generate diagnostic, energize the appropriate alarm relay, continue to energize the Evap and Cond Pump Outputs, continue to command the affected compressor off, fully unload the

ffected compressor. For as long as current

ontinues, perform liquid level and oil return

as pump contro . Average of all monitored Line voltages

bove + 10% of nominal. [Must hold =

10% of nominal. Must trip = + 15% of

nominal. Reset differential = min. of 2%

nd max. of 4%. Time to trip = minimum f 1 min. and maximum of 5 min.)

esign: Nom. trip: 60 seconds at greater

than 112.5%, + or - 2.5%, Auto Reset at

9% or less.

. Average of all monitored Line voltages below - 10% of nominal or the Under Overvoltage transformer(s) are not

onnected. [Must hold = - 10% of nominal.

ust trip = - 15% of nominal. Reset

ifferential = min. of 2% and max. of 4%. Time to trip = min. of 1 min. and max. of 5 min.) Design: Nom. trip: 60 seconds at less than 87.5%, + or - 2.8% at 200V or

or - 1.8% at 575V, Auto Reset at 90%

r greater.

evel

emote

RLC-SVU006A-E

Page 20

Diagnostic

]

onLa

alnla

Temp

abo

)

al9C

)

]

3000

Main Processor Diagnostic

Cod

iagnostic Nam

Unexpected Starter

efrigerant Pressure

: Reset Has

ccurre

Shutdown

ow Evaporator

efrigerant

erature

w Oil Flow

ss of Oil at

ompressor

(Running)

ss of Oil at

ompressor

Stopped

w Differential

Differential

ffect arget

hiller

Severityersistence

mmediate

mmediate nd Special

ction

mmediate

ctive Modes

Inactive Modes

tch

modes, Starting,

tch

Chiller Energized

tch

tch Chiller Energized

ll Cprsr Running

unning and reparing to

Shutdown

ll Ckt Running

nd Delta P

Psi

tarter Contactor

nergized

ompressor Pre-

tart [all other

modes

Criteri

The main processor has successfully come

ut of a reset and built its application.

reset may have been due to a power up, installing new software or conﬁ guration. This diagnostic is immediately and automatically

leared and thus can only be seen in the

istoric Diagnostic List in TechView The Starter module status reported back that

it is stopped when it should be running and no Starter diagnostic exists. This diagnostic

ill be logged in the active buffer and then

leared. . The inferred Saturated Evap Refrigerant

Temperature (calculated from suction

ressure transducer(s)) dropped below the ow Refrigerant Temperature Cutout Setpoint

for 450°F-sec (10°F-sec max rate) while the

ircuit was running after the ignore period had expired. The integral is held at zero for the 1 minute ignore time following the circuit

tartup and the integral will be limited to never trip in less than 45 seconds, i.e. the

rror term shall be clamped to 10°F. The minimum LRTC setpoint is -5°F (18.7 Psia) the point at which oil separates from the refrigerant. b. During the timeout of the trip integral, the unload solenoid(s) of the running compressors on the circuit, shall be

nergized continuously and the load solenoid

hall be off. Normal load/unload operation

ill be resumed if the trip integral is reset by

return to temps above the cutout setpoint. The oil pressure was out of the acceptable

pressure range for 15 seconds, while the

elta Pressure was greater than 15 Psid.:

cceptable range is 0.50 or 0.60 > (PC-Po) /

PC-PE) for the ﬁ rst 2.5 minutes of operation,

nd 0.40 or 0.50 > (PC-Po) / (PC-PE thereafter. The higher ratios used if the

stem DP is less than 23 psid

n running modes , Oil Loss Level Sensor

detects lack of oil in the oil tank feeding the

ompressor (distinguishing a liquid ﬂ ow from

vapor ﬂ ow

il Loss Level Sensor detects a lack of oil in

the oil tank feeding the compressor for 90

econds after EXV preposition is completed.

ote: Compressor start is delayed while

aiting for oil to be detected.

The system differential pressure was either below 15 Psid for more than 164 Psid-sec,

r below 23.0 Psid for latter integral’s value is not cleared for any reason including diagnostic trip, manual reset, or power up reset (ie. Integral is saved nonvolatily on power down). The integral will decay while circuit is running at a max rate

f –10 PSID, and while stopped at a rate of

0.4 PSID. This same integral is associated ith the operating mode “Compressor Cool own”. Also see diagnostic below

The system differential pressure was below

7.7 Psid. The occurrence of this diagnostic ill saturate the above “Low Diff Rfgt Press”

ntegral and invoke the same “Compressor

Cool Down” op mode.

Psid-sec. The

eset

evel

emote

RLC-SVU006A-E4

Page 21

]

aes

)

Temp

]

lt p

onLa

)

Diagnostics

Cod

583

584

iagnostic Nam

igh Differential

efrigerant Pressure

igh Refrigerant

Temperature Sensor

vaporator Liquid

AS Communication

ow Evaporator Liquid

igh Evaporator

ressure Rati

igh Cprsr

fgt Discharge

erature

ow Discharge

Superhea

ompressor

ischarge

evel Sensor

AS Failed

to Establish

mmunication

vel

iquid Leve

ffects arget

Severityersistenc

hiller

hiller Specia

hiller

mmediate

ctive Modes

Inactive Modes

tch Chiller Energized

Service Pumpdown

tch

Onl

ll [compressor

not running or

during compressor

run unload

ny Running Mode

ower-u

tarter Contactor

nergized

all Stop modes]

tarter Contactor

nergized

all Stop modes]

Criteri

. The system differential pressure was bove 160 Psid- trip immediately (normal

hutdown

The diff pressure was above 152 Psid - trip

in 1 hour The system pressure ratio exceeded 5.61 for

contiguous minute. This pressure ratio is fundamental limitation of the compressor.

The pressure ratio is deﬁ ned as Pcond (abs)/

evap(abs).

The compressor discharge temperature

xceeded 190°F. This diagnostic will be

uppressed if it occurs during the compressor run-unload period or after the compressor has stopped, but a run unload will be terminated early as a result. Note: As part

f the Compressor High Temperature Limit

ode (aka Minimum Capacity Limit), the

ompressor shall be forced loaded as the ﬁ ltered discharge temperature nears this trip-point.

hile Running Normally, the Discharge Superheat was less than 12 degrees F +- 1F for more than 6500 degree F seconds.

t startup the UCM shall ignore the Discharge

Superheat for 5 minutes.

Sensor or LLID

The BAS was setup as “installed” and the

AS did not communicate with the MP within 5 minutes after power-up. Refer to Section n Setpoint Arbitration to determine how

etpoints and operating modes may be

ffected. Note: The original requirement for

this was 2 minutes, but was implemented at

minutes for RTAC.

The BAS was setup as “installed” at the MP

nd the Comm 3 llid lost communications

ith the BAS for 15 contiguous minutes

fter it had been established. Refer to

Section on Setpoint Arbitration to determine how setpoints and operating modes may be effected by the comm loss. The chiller follows the value of the Tracer Default Run Command which can be previously written by Tracer and stored nonvolatilely by the MP

either use local or shutdown).

The liquid level sensor is seen to be

t or near its low end of range for 80

ontiguous minutes while the compressor

is running. Design: 20% or less of bit count

orresponding to –21.2 mm or less liquid

level for 80 minutes The liquid level sensor is seen to be at or

near its high end of range for 80 contiguous minutes while the compressor is running. (The diagnostic timer will hold, but not clear

hen the circuit is off). Design: 80% or more

f bit count corresponding to +21.2 mm or

more liquid level for 80 minutes

evel

emote

RLC-SVU006A-E

Page 22

Diagnostic

]

aes

“

onLa

“

onLa

“

onLa

)

]

Cod

iagnostic Nam

xternal Chilled/Hot

xternal Current Limit

xternal Base Loading

vap Water Flow

(Entering Water

vaporator Entering

ater Temp Sensor

vaporator Leavin

ater Temp Sensor

Condenser Entering

ater Temp Sensor

Condenser Leavin

ater Temp Sensor

Condenser Rfgt

ressure Transducer

il Flow Protection

efrigerant Pressure

ater Setpoin

etpoin

output power

inpu

etpoin

Tem

vaporator Rfgt

il Pressure

Transducer

ow Evaporator

ffect arget

hiller

Severityersistence

nfo an Special

ction

nfo an Special

ction

nfo an Special

ction

mmediate

onLatch

tch

nLatch

tch

ctive Modes

Inactive Modes

ny Ckt(s)

nergized

No Ckt(s

nergized]

tarter Contactor

nergized [all Stop

modes

Chiller Prestart an

Chiller Energized

Criteri

. Function Not “Enabled”: no diagnostics. b.

Enabled”: Out-Of-Range Low or Hi or bad

LID, set diagnostic, default CWS to next level of priority (e.g. Front Panel SetPoint). This Info diagnostic will automatically reset if the input returns to the normal range.

. Not “Enabled”: no diagnostics. b.

Enabled”: Out-Of-Range Low or Hi or bad

LID, set diagnostic, default CLS to next level

f priority (e.g. Front Panel SetPoint. This

nfo diagnostic will automatically reset if the

input returns to the normal range. Out-Of-Range Low or Hi or bad LLID,

et diagnostic, This Info diagnostic will

utomatically reset if the input returns to the normal range.

. Not “Enabled”: no diagnostics. b.

Enabled”: Out-Of-Range Low or Hi or bad

LID, set diagnostic, default BLS to next level

f priority (e.g. Front Panel SetPoint. This

nfo diagnostic will automatically reset if the

input returns to the normal range. The entering evaporator water temp fell

below the leaving evaporator water temp. by more than 2°F for 100°F-sec. For falling ﬁ lm evaporators this diagnostic cannot reliably indicate loss of ﬂ ow, but can warn

f improper ﬂ ow direction through the

vaporator, misbound temperature sensors,

r other system problems

ad Sensor or LLID Normal operation unless

CHW Reset is enabled. If CHW Reset is

nabled and either Return or Constant Return Chilled Water Reset is selected, its effect will be removed but slew rates on the change will be limited per the Chilled Water Reset spec.

Sensor or LLID

ad Sensor or LLID. If chiller running, and

ondenser water regulating valve option installed, force valve to 100% ﬂ ow.

Sensor or LLID

The Oil Pressure Transducer for this Chiller is reading a pressure either above its Condenser Pressure by 15 Psia or more, or below its Evaporator Pressure 10 Psia or more for 30 seconds continuously.

The Evaporator Refrigerant Pressure dropped below 10 psia just prior to compressor

tart. The pressure fell below 10 psia while running but before the 3 minute ignore time had expired or fell below 16 Psia after the

minute ignore time had expired.

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RLC-SVU006A-E4

Page 23

]

aes

)

alnLa

Diagnostics

Cod

iagnostic Nam

ow Evaporator Water

Temp (Unit Off

Temp: Unit Of

ow Evaporator Water

Temp (Unit On

vaporator Water

Condenser Water

efrigerant Pressure

ow Evaporator

low Overdue

low Los

low Overdue

low Los

igh Evaporator

ffects arget

hiller

Severityersistenc

nfo and Special

ction

nfo and Special

ction

mmediate nd Special

ction

mmediate

mmediate nd Special

ction

nLatch

tch

nLatch

tch

nLatch

ctive Modes

Inactive Modes

Unit in Stop Mode,

r in Auto Mode

nd No Ckt(s

nergized

Any Ckt

nergized]

Unit in Stop Mode,

r in Auto Mode

nd No Ckt's

nergizd

Any Ckt Energizd]

ny Ckt[s]

nergized

No Ckt(s)

nergizd]

stab. Evap. Water

low on going from

STOP to AUTO.

vap pump

mmanded “on”

xcept for

All Stop modes]

stab Cond Water

low

Start and All Run

Criteri

The leaving Evaporator water temp. fell below the leaving water temp cutout setting for 30 degree F seconds while the Chiller is in the Stop mode, or in Auto mode with no

ompressors running. Energize Evap Water pump Relay until diagnostic auto resets, then return to normal evap pump control.

utomatic reset occurs when the temp rises

°F (1.1°C) above the cutout setting for

minutes.

The evap sat temp fell below the water tem

utout setting while the respective evap liquid level was greater than –21.2 mm for

0 (or 150 begining with rev 08) degree F

econds while Chiller is in the Stop mode, or in Auto mode with no compressors running.

nergize Evap Water pump Relay until

diagnostic auto resets, then return to normal

vap pump control. Automatic reset occurs

hen either the evap temp rises 2°F (1.1°C

bove the cutout setting or the liquid level

falls below –21.2mm for 30 minutes The Evaporator water temp. fell below the

utout setpoint for 30 degree F Seconds

hile the compressor was running. Automatic

reset occurs when the temperature rises

°F (1.1°C) above the cutout setting for minutes. This diagnostic shall not denergize the Evaporator Water Pump Output.

vaporator water ﬂ ow was not proven within 0 minutes of the Evaporator water pum

relay being energized. The Evap pump

mmand status will not be effected. This

diagnostic will auto-clear on proof of ﬂ ow

6-10 seconds of continuous ﬂ ow), or if

hiller is returned to Stop mode. The Evaporator water ﬂ ow proof input was

pen for more than 6-10 contiguous seconds fter ﬂ ow had been proven. The pum

mmand status will not be effected. Even though the pump may be commanded to run in the STOP modes (pump off delay time), this diagnostic shall not be called out in the STOP modes. This diagnostic will auto-clear

n proof of ﬂ ow (6-10 seconds of continuous

ﬂ ow), or if chiller is returned to Stop mode. Condenser water ﬂ ow was not proven within

0 minutes of the condenser pump rela

being energized. The Cond Pump shall be

ommanded off. Diagnostic is reset with

return of ﬂ ow (although only possible with

xternal control of pum

The condenser water ﬂ ow proof input was

pen for more than 6 contiguous seconds

fter ﬂ ow had been proven. This diagnostic is automatically cleared once the compressor is stopped by a ﬁ xed time out of 7 sec. The Cond Pump shall be commanded off but the

vap pump command will not be effected. The evaporator refrigerant pressure has

risen above 190 psig (future use – add “for

ontinuous15 seconds”). The evaporator

ater pump relay will be de-energized to

top the pump regardless of why the pump

is running. The diagnostic will auto reset

nd the pump will return to normal control

hen the evaporator pressures falls below

85 psig. This diagnostic must shutdown the

hiller if it is running.

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RLC-SVU006A-E

Page 24

Diagnostic

]

altdoo

Temp

onLa

odu

onLa

ool

onLa

odu

Cod

iagnostic Nam

igh Evaporator

ater Temperature

igh Pressure Cutout

mergency Stop

efrigerant Monitor

Starter M

emory Error Type

Starter M

Conﬁ guration

Starter Failed to Arm

CI-C Software

ismatch: Use BAS

r Air

erature Sensor

npu

emory Error

Type 2 -

P: Invali

Check Clock

tar

estart Inhibi

ffect arget

Severityersistence

nfo an Special

mmediate

nfo an Special

mmediate

hiller

hiller inf

ction

nLatch

tch

ctive Modes

Inactive Modes

Only effective if

ither

Evap Wtr Flow

Overdue,

Evap Wtr Flow oss, or 3)Low

vap Rfgt Temp,-

nit Off, diagnostic

is active.

ll –if installe

Criteri

The leaving water temperature exceeded the high evap water temp limit (TV service menu settable –default 105F) for 15

ontinuous seconds. The evaporator water pump relay will be de-energized to stop the pump but only if it is running due one of the diagnostics listed on the right. The diagnostic

ill auto reset and the pump will return to normal control when the temperature falls 5°F below the trip setting. The primary

urpose is to stop the evaporator water ump and its associated pump heat from ausing excessive waterside temperatures nd waterside pressures when the chiller is

not running but the evap pump is on due to

ither Evap Water Flow Overdue, Evaporator

ater Flow Loss , or Low Evap Temp – Unit

Off Diagnostics. This diagnostic will not

uto clear solely due to the clearing of the nabling diagnostic.

high pressure cutout was detected; C.O. on

rise @ 180 psig, reset @ 135 psig (+/-5 psi

n switching tolerance) Note: Pressure relief alve is 200 Psig +- 2% trip at 315 ± 5 psi.

ote: Other diagnostics that may occur as an xpected consequence of the HPC trip will be uppressed from annunciation. These include hase Loss, Power Loss, and Transition

Complete Input Open.

. EMERGENCY STOP input is open. An xternal interlock has tripped. Time to trip

from input opening to unit stop shall be 0.1 to 1.0 seconds.

ad Sensor or LLID. This diagnostic will only ccur if OA sensor is conﬁ gured.OA Chilled

ater reset will be suspended if selected and

Tracer OA unavailable. Open or Shorted input and the Rfgt Monitor

is setup as installed Checksum on RAM copy of the Starter LLID

onﬁ guration failed. Conﬁ guration recalled

from EEPROM. Checksum on EEPROM copy of the Starter

LID conﬁ guration failed. Factor default

lues used.

P has an invalid conﬁ guration based on the

rrent software installe

The real time clock had detected loss of its

scillator at some time in the past. Check /

replace battery? This diagnostic can be

ffectively cleared only by writing a new alue to the chiller’s time clock using the

TechView or DynaView’s “set chiller time” functions.

Starter failed to arm or start within the

llotted time (2 minutes).

The Restart Inhibit was invoked on

ompressor. This indicates excessive chiller ycling which should be corrected.

The neuron software in the LCI-C m does not match the chiller type. Download the proper software into the LCI-C neuron. To do this, use the Rover service tool, or

LonTalk® tool capable of downloadin oftware to a Neuron 3150®.

eset

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RLC-SVU006A-E4

Page 25

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Diagnostics

Cod

iagnostic Nam

Software Error

mber: 1001 Call Trane Service

ffects arget

func-

tion

Severityersistenc

mmediate

tch –

ower down

reset is reqd

ctive Modes

Inactive Modes

Criteri

high level software watchdog has

etected a condition in which there was

ontinuous 5 minute period of compressor

eration, with neither chilled water ﬂ ow

nor a” contactor interrupt failure” diagnostic

ctive. The occurrence of this software error

message suggests an internal software state

hart misalignment has occurred. The events that led up to this failure, if known, should be recorded and transmitted to Trane Controls

ngineering – (SW rev 6 and higher)

evel

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RLC-SVU006A-E

Page 26

Diagnostic

]

1Co

oad

2Co

oad

2Co

doo

Communication Diagnostic

Cod

iagnostic Nam

Comm Loss: External

mergency Stop

xternal Ice Building

uilding Status Rela

mm Loss: Out

ir Temperature

omm Loss: Eva

eaving Water Temp

omm Loss: Eva

ntering Water Temp

Condenser Leavin

Condenser Entering

omm Loss: Cprsr

ischarge Rfgt Temp

Chilled/Hot Water

urrent Limit Setpoin

mm Loss: Slide

lve Unl

mm Loss: Slide

lve L

uto/Sto

mm Loss:

Comman

mm Loss: Ice

mm Loss:

ater Tem

mm Loss:

ater Tem

mm Loss: Ext

etpoin

mm Loss: Ext

ffectsSeverityersistence

hiller

ild-

hiller

rmal

nfo an Special

ction

nfo an Special

ction

nfo an Special

ction

mmediate

nfo an Special

ction

nfo an Special

ction

tch

ctive Modes

Inactive Modes

Criteri

Continual loss of communication between the

P and the Functional ID has occurred for

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for

0 second period.

Continual loss of communication between the MP and the Functional ID has occurre for a 30 second period. Chiller shall revert to normal (non-ice building) mode regardless of last state.

Continual loss of communication between the

P and the Functional ID has occurred for

0 second period. Note that if this diagnostic

ccurs, Chiller shall remove any OA Chilled

ater Reset, if it was in effect and if Tracer OA was unavailable. Apply slew rates per Chilled Water Reset spec

Continual loss of communication between the

P and the Functional ID has occurred for

0 second period.

Continual loss of communication between the MP and the Functional ID has occurre for a 30 second period. Chiller shall remove

ny Return or Constant Return Chilled Water

eset, if it was in effect. Apply slew rates per

Chilled Water Reset spec. Continual loss of communication between the

P and the Functional ID has occurred for

0 second period.

Continual loss of communication between the MP and the Functional ID has occurre for a 30 second period. If chiller running,

nd condenser water regulating valve option

installed, force valve to 100% ﬂ ow. Continual loss of communication between the

P and the Functional ID has occurred for

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for

0 second period. Chiller shall discontinue

use of the External Chilled Water Setpoint

ource and revert to the next higher priority

for setpoint arbitration Continual loss of communication between the

P and the Functional ID has occurred for

0 second period. Chiller shall discontinue use of the External Current limit setpoint and revert to the next higher priority for Current

imit setpoint arbitration

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RLC-SVU006A-E4

Page 27

]

aes

6Co

Diagnostics

Cod

iagnostic Nam

Comm Loss: High

ressure Cutout

vaporator Water

Condenser Water

vaporator Rfgt

Condenser Rfgt

Comm Loss: Oil

mm Loss: Oil

eturn Gas Pump Fil

mm Loss: Oil

eturn Gas Pump

Comm Loss: Oil Loss

evel sensor Inpu

mm Loss: Master

vaporator Water

Condenser Water

Comm Loss: SSS/AFD

efrigerant Monitor

mm Loss: Ext Base

oading Setpoin

mm Loss: Ext Base oading Command

vaporator Rfgt

mm Loss: Starter

witch

mm Loss:

low Switch

mm Loss:

low Switch

mm Loss:

ressure

mm Loss:

ressure

rain

il Line SV

mm Loss:

ump Rela

mm Loss:

ump Rela

mm Loss:

npu

mm Loss:

iquid Leve

ffectsSeverityersistenc

hiller

mmediate

nfo

nfo and Special

ction

nfo and Special

ction

mmediate

tch

ctive Modes

Inactive Modes

Criteri

Continual loss of communication between the

P and the Functional ID has occurred for a

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for a

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for a

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for a

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for a

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for a

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for a

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for a

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for a

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for a

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for a

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for a

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for a

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for a

0 second period.

Continual loss of communication between the MP and the Functional ID has occurred for a 30 second period. The external base load setpoint input is removed from the arbitration to establish the Base

oadingSetpoint.

Continual loss of communication between the MP and the Functional ID has occurred for a 30 second period. The external base load input is removed from the arbitration to

nable Base Loading.

Continual loss of communication between the

P and the Functional ID has occurred for a

0 second period.

Continual loss of communication between the

P and the Functional ID has occurred for a

0 second period.

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RLC-SVU006A-E

Page 28

Diagnostic

]

aes

6Co

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704

iagnostic Nam

lectronic Expansion

Starter Comm Loss:

Comm Loss: Local

AS Interface

Comm Loss:

Status Programmable

Compressor % RLA

mm Loss: Con

fgt Pressure Outpu

mm Loss: Con

ead Press Cntrl

mm Loss: AFD

peed signal outpu

mm Loss: AFD

utput power inpu

Comm Loss: External

t Water Comman

omm Loss:

lve

mm Loss:

lve

in Processor

ela

mm Loss:

utpu

ffectsSeverityersistence

hiller

mmediate

nfo an Special

ction

mmediate

tch

arnin

ctive Modes

Inactive Modes

Criteri

Continual loss of communication between the

P and the Functional ID has occurred for

0 second period. Continual loss of communication between the

P and the Functional ID has occurred for

0 second period. Starter has had a loss of communication with

the MP for a 15 second period. Continual loss of communication between the

P and the Functional ID has occurred for

0 second period. Use the last values sent from BA

Continual loss of communication between the

P and the Functional ID has occurred for

0 second period. Continual loss of communication between the

P and the Functional ID has occurred for

0 second period. Continual loss of communication between the

P and the Functional ID has occurred for

0 second period. Continual loss of communication between the

P and the Functional ID has occurred for

0 second period. Continual loss of communication between the

P and the Functional ID has occurred for

0 second period. Continual loss of communication between the

P and the Functional ID has occurred for

0 second period. Continual loss of communication between the

P and the Functional ID has occurred for

0 second period.

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RLC-SVU006A-E4

Page 29

Operator Display Diagnostics and Message

Table 9. Operator display diagnostics and messages

eset

Diagnostics

Operator Display Messa

Valid Conﬁ guration is Presen

Communication Lost with UC800

isplay Failed to Establish

mmunication

isplay is about to Restar

rror Resulted From Invalid Conﬁ guration – Record Condition and Call Trane Service

ssertion: ‘File Name’ ‘Line Number’

escriptio

//Troubleshootin

valid conﬁ guration is present in the MP’s nonvolatile memory. The conﬁ guration

is a set of variables and settings that deﬁ ne the physical makeup of this

articular chiller. These include: number/airﬂ ow,/and type of fans, number/and

ize of compressors, special features, characteristics, and control options.

//Temporary display of this screen is part of the normal power up sequence.

thernet cable not connected between display and UC800.

C800 not powered. C800 has an invalid conﬁ guration – Download a valid conﬁ guration C800 is in Binding View. When exit Binding View, select ‘Restart’ on this

ssage.

thernet cable not connected between display and UC800.

C800 not powered. C800 just has the backup application running as received from the vendor.

ownload CTV application software. C800 has an invalid conﬁ guration – Download a valid conﬁ guration

The display is low on memory, and needs to re-start. Select Yes to restart. Selecting Yes will not affect the UC800 operation.. Only the Operator Display is r

This error message is displayed when the MP code ﬁ nds itself in an illegal location. These assertion points are placed in code locations to aid the software team in identifying why the MP locked up as a result of vectoring to an invalid location.

hen this message occurs, copy down the ﬁ le name and line number and have

this ready to give Trane service. This message remains on the screen for two minutes. After two minutes, the

atchdog times out and a ‘Watchdog Error’ message is displayed The watchdo

then resets the MP. The MP heads into a boot and conﬁ guration mode the same

s it does on a power up.

These error messages are on the AdaptiView screen and do not appear in Tracer TU nor in the diagnostic logs.

ile Not Foun Screen partially populated. Auto and

Stop button graphics display, no text.

creen Unresponsive

The Page Cannot be found

C800 Conﬁ guration is Invalid

RLC-SVU006A-E

date UC800 software with Tracer T

alid conﬁ guration is not present. Download a conﬁ guration.

Tracer TU is downloading software. Wait till download is complete.

ost likely this UC800 has only the backup application. Download the latest UC

00 software build.

This could also mean that the UC800 does not have a valid conﬁ guration.

ownload a conﬁ guration to it.

Cycle power to the OD and UC800.

C could be in binding view. If so, get it out of binding view by navigating to

nother screen in Tracer TU.

pdate the UC800 conﬁ guration with Tracer TU.

Page 30

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RLC-SVU006A-E4

Page 31

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RLC-SVU006A-E

Page 32

Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the leader

in creating and sustaining safe, comfortable and energy efﬁ cient environments, Trane offers a broad portfolio

advanced controls and HVAC systems, comprehensive building services and parts. For more information visit

o www.Trane.com

LC-SVU006A-E4 April 201

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Trane Tracer TD7 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual