Trane SRV-SVX04C-EN Installation And Maintenance Manual

Installation, Operation, and Maintenance

product image goes here, centered on page

Trane Rental Services

Desiccant Dehumidification Units

SAFETY WARNING

Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of
heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury.
When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are
attached to the equipment.

August 2022

SRV-SVX04C-EN

Introduction

Read this manual thoroughly before operating or servicing this
unit.

Warnings, Cautions, and Notices

Safety advisories appear throughout this manual as required.
Your personal safety and the proper operation of this machine
depend upon the strict observance of these precautions.

The three types of advisories are defined as follows:

WARNING

CAUTIONs

NOTICE

Important Environmental Concerns

Scientific research has shown that certain man-made
chemicals can affect the earth’s naturally occurring
stratospheric ozone layer when released to the atmosphere. In
particular, several of the identified chemicals that may affect
the ozone layer are refrigerants that contain Chlorine, Fluorine
and Carbon (CFCs) and those containing Hydrogen, Chlorine,
Fluorine and Carbon (HCFCs). Not all refrigerants containing
these compounds have the same potential impact to the
environment. Trane advocates the responsible handling of all
refrigerants-including industry replacements for CFCs and
HCFCs such as saturated or unsaturated HFCs and HCFCs.

Important Responsible Refrigerant
Practices

Trane believes that responsible refrigerant practices are
important to the environment, our customers, and the air
conditioning industry. All technicians who handle refrigerants
must be certified according to local rules. For the USA, the
Federal Clean Air Act (Section 608) sets forth the requirements
for handling, reclaiming, recovering and recycling of certain
refrigerants and the equipment that is used in these service
procedures. In addition, some states or municipalities may
have additional requirements that must also be adhered to for
responsible management of refrigerants. Know the applicable
laws and follow them.

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

Indicates a potentially hazardous
si

tuation which, if not avoided, could
result in minor or moderate injury. It could
also be used to alert against unsafe
practices.

Indicates a situation that could result in
equipment or property-damage only
accidents.

WARNING

Proper Field Wiring and Grounding
Required!

Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/state/national electrical codes.

WARNING

Personal Protective Equipment (PPE)
Required!

Failure to wear proper PPE for the job being undertaken
could result in death or serious injury. Technicians, in
order to protect themselves from potential electrical,
mechanical, and chemical hazards, MUST follow
precautions in this manual and on the tags, stickers,
and labels, as well as the instructions below:

• Before installing/servicing this unit, technicians
MUST put on all PPE required for the work being
undertaken (Examples; cut resistant gloves/sleeves,
butyl gloves, safety glasses, hard hat/bump cap, fall
protection, electrical PPE and arc flash clothing).
ALWAYS refer to appropriate Safety Data Sheets
(SDS) and OSHA guidelines for proper PPE.

• When working with or around hazardous chemicals,

WAYS refer to the appropriate SDS and OSHA/GHS

AL
(Global Harmonized System of Classification and
Labeling of Chemicals) guidelines for information on
allowable personal exposure levels, proper
respiratory protection and handling instructions.

• If there is a risk of energized elec
flash, technicians MUST put on all PPE in accordance
with OSHA, NFPA 70E, or other country-specific
requirements for arc flash protection, PRIOR to
servicing the unit. NEVER PERFORM ANY
SWITCHING, DISCONNECTING, OR VOLTAGE
TESTING WITHOUT PROPER ELECTRICAL PPE AND
ARC FLASH CLOTHING. ENSURE ELECTRICAL
METERS AND EQUIPMENT ARE PROPERLY RATED
FOR INTENDED VOLTAGE.

trical contact, arc, or

©2022 Trane SRV-SVX04C-EN

WARNING

Follow EHS Policies!

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

• All Trane personnel must follow the company’s
Env

ironmental, Health and Safety (EHS) policies
when performing work such as hot work, electrical,
fall protection, lockout/tagout, refrigerant handling,
etc. Where local regulations are more stringent than
these policies, those regulations supersede these
policies.

• Non-Trane personnel should always follow local
regulations.

Copyright

This document and the information in it are the property of
Trane, and may not be used or reproduced in whole or in part
without written permission. Trane reserves the right to revise
this publication at any time, and to make changes to its content
without obligation to notify any person of such revision or
change.

Introduction

Trademarks

All trademarks referenced in this document are the trademarks
of their respective owners.

Revision History

• Updated the General Information chapter.

• Updated the Installation and Start-up Guidelines in the Unit
Specifica

• Updated the Installation Controls chapter.

tions chapter.

SRV-SVX04C-EN 3

Table of Contents

General Information . . . . . . . . . . . . . . . . . . . . . . . 5

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Unit Specifications and Weights . . . . . . . . . . . . 6

Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Start-up Guidelines . . . . . . . . . . . . . . . . . . . . . 7

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Installation - Controls . . . . . . . . . . . . . . . . . . . . . . 9

Customer Interface . . . . . . . . . . . . . . . . . . . . . 9

Auxiliary Dry Contacts - Operational System

States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Main Power Initialization Sequence . . . . . . . 9

Normal Start-up . . . . . . . . . . . . . . . . . . . . . . 9

Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Faults and Warnings . . . . . . . . . . . . . . . . . . . 10

Alarm Indication . . . . . . . . . . . . . . . . . . . . . 10

List of System and DH Warnings . . . . . . . . 11

Proportional Control Loops/ DH Interlocks . 11

Human Machine Interface Control 

(Op73 Simatic Panel) . . . . . . . . . . . . . . . . . 12

Fan Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Shutdown and Maintenance . . . . . . . . . . . . . . . 15

Shut Down Guidelines . . . . . . . . . . . . . . . . . . 15

Maintenance Guidelines . . . . . . . . . . . . . . . . 15

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . 16

4 SRV-SVX04C-EN

General Information

Overview

This manual covers the desiccant dehumidification units
(DHU) available to rent from Trane Rental Services for
temporary dehumidification solutions. This includes DHU
technical information, start-up information, and unit
maintenance. Information contained in this manual is provided
to ensure the safe installation and operation of the equipment
and its surroundings.

Use this manual as a reference to determine unit size, power

irements, or lifting requirements. If additional information

requ
is required, contact Trane Rental Services (TRS).

Prior to securing rental equipment, contact TRS for availability

ncluding ancillary items: electrical cable, flexible duct, etc.

i
Equipment is available on a first-come, first-serve basis, but
can be reserved with a signed rental agreement.

Trane Rental Services DHUs are highly efficient at providing

an, dehumidified air with minimal electrical power required.

cle
The DHUs can be used in free blow or ducted applications.
Each unit has a single horizontal supply air connection, single
return air connection, and is equipped with a post-cooling coil
to aid in reducing leaving air temperatures when required.
When used in free blow applications, ducting on the front of the
unit must be removed. Flexible duct is available upon request.

Table 1. RSDH5000 Desiccant dehumidification unit

Manufacturer - Munters™

Airflow

Post-cooling 
Coil Water Connection(s)

Supply Air Connection(s)

Return Air Connection(s)

Reactivation Air Connection(s)

Pre - Filter

Note: Unit can be provided with reducer to provide either 2.5 inch or 4 inch grooved water co nnection to allow connection to our flexible water hose accessories.

Orientation Horizontal

Nominal Airflow 4,750 cfm

Blower RPM 3500

Max Static Discharge Pressure 1.70 in. ESP

Type Flanged

Size 3 inches

Typ e Round

Quantity 1

Size 17.75 inches

Typ e Round

Quantity 1

Size 17.75 inches

None (Free Blow)

Type 30% efficient

Quantity and Dimensions

Inlet Delta P 0.21 in. wc

Final Delta P 0.42 in. wc

(2) 12 in. x 24 in.
(2) 24 in. x 24 in.

SRV-SVX04C-EN 5

Unit Specifications and Weights

Table 2. Unit specifications

Dehumidifier

Process Air Reservation Air

Desiccant Type

SiGel

Fans

Location

Supply

React

Post Cooling Coil

Typ e

Post Cool

SCFM

4750 102 1.82 2.12 1050 1.63 3.00 Electric 84

Size Rotation Motor HP RPM SCFM

15 CW 10 3500 4750 7.04 5.34 1.70 3

12-1/4-7 CW 3 3450 1050 4.50 3.00 1.50

SCFM Load MBH P (in.

4750 366 1.58 10 10 12 57 24.5

Moisture Removal

(lb/hr)

Fan Data Performance

Airside Values Coil Dimensions Fluidside Values

Table 3. Dimensions and weights

Length Width Height Weight

15 ft 2 in. 6 ft 2 in. 6 ft 5 in. 4175 lb

WheelP

(in. wc)

wc) Face ft

Unit P

(in. wc)

SCFM

2

Rows FPI Flow (gpm) P (ft)

WheelP

n. wc)

(i

TSP

(in. wc)

Unit P

(in. wc)

Sys Loss

(in. wc)

Energy Type Input kW

ESP

(in. wc)

T

Rigging

DHUs are equipped with fork pockets on two sides and lifting
rings along the base of the unit.

WARNING

Heavy Objects!

Failure to follow instructions below could result in unit
dropping which could result in death or serious injury,
and equipment or property-only damage.

Ensure that all the lifting equipment used is properly
rated for the weight of the unit being lifted. Each of the
cables (chains or slings), hooks, and shackles used to
lift the unit must be capable of supporting the entire
weight of the unit. Lifting cables (chains or slings) may
not be of the same length. Adjust as necessary for even
unit lift.

Figure 1. Desiccant dehumidification unit

6 SRV-SVX04C-EN

Installation

WARNING

Hazardous Voltage!

Failure to disconnect power before servicing could
result in death or serious injury.

Disconnect all electric power
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Verify that no power is present
with a voltmeter.

1. Confirm unit is level.

2. Verify air inlet and outlet are clear of any debris or
obstructions.

, including remote

Figure 2. Main unit disconnect

NOTICE

Proper Airflow!

Failure to follow the instructions below could result in
equipment damage.

The reactivation air from the unit could be in excess of
180

°F. Do not position unit where reactivation outlet air
could come into contact with sensitive materials and
cause equipment and property damage.

3. Connect power cable from unit to the power source and
confirm wires are pro
securely to panel.

a. For ducted applications, install the supply and return air

ucts on the duct adapters (front of the unit). Ensure

d
duct is straight.

b. For free blow applications, no duct installation is

quired.

re

perly phased, connected, and locked

Start-up Guidelines

1. Verify that the unit disconnect is in the OFF position on the
unit.

2. Energize the source power to the DHU.

3. Switch the unit disconnect ON to supp

ly power to the unit.

4. Refer to “Installation - Controls,” p. 9 for unit operation.

5. Close all covers (local and remote panels) and secure.

SRV-SVX04C-EN 7

Electrical Data

DHUs have connections to allow for use with TRS available 
2/0 electrical cable. Below is a list of electrical data for these
units. If additional information is needed, contact Trane Rental
Services.

Table 4. Electrical data - RSDH5000

Fused Disconnect? Ye s

Unit Power 460V, 3-phase

Unit MCA 154.1 A

Unit MOP 175 A

Supply Motor FLA 11. 6 A

Reactivation Motor FLA 3.6 A

8 SRV-SVX04C-EN

Installation - Controls

Customer Interface

• Start the system in Auto mode using the AUTO/OFF/
MANUAL selector to interface with customer supplied

equipment.

• Start the system in Auto mode by selecting the contact

through the ON/OFF selector switch between

closure
TB06#61 and TB06#10.

• MANUAL mode does not require the dry contact closure

to enable the system to start.

input

• The selector switch has an integral
to indicate the equipment has power.

light and will illuminate

Auxiliary Dry Contacts ­Operational System States

• SYSTEM FAULT - Auxiliary dry contacts of CR02 are
provided for customer interlocking and will close when the
dehumidifier goes into any fault as described in the list of
system and DH warnings. See

Warnings,” p. 11

• SYSTEM
contacts of MS03 are provided for customer interlocking
and will close when the process blower is in operation.

• SYSTEM W
provided for customer interlocking and will close when the
dehumidifier goes into a warning condition.

• D/H RUN ­customer interlocking and will closed when the
dehumidifier is in operation.

.

RUN (CONTROL RELAY) - Auxiliary dry

ARNING - Auxiliary dry contacts of CR03 are

Auxiliary dry contacts of MS02 are provided for

WARNING

Hazardous Service Procedures!

Failure to follow all precautions in this manual and on
the tags, stickers, and labels could result in death or
serious injury.

Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical hazards,
MUST follow precautions in this manual and on the
tags, stickers, and labels, as well as the following
instructions: Unless specified otherwise, disconnect all
electrical power including remote disconnect and
discharge all energy storing devices such as capacitors
before servicing. Follow proper lockout/tagout
procedures to ensure the power can not be
inadvertently energized. When necessary to work with
live electrical components, have a qualified licensed
electrician or other individual who has been trained in
handling live electrical components perform these
tasks.

“List of System and DH

Start-up

Main Power Initialization Sequence

1. Energize the main power to the equipment by supplying
correct voltage directly to the unit using the system main
fused disconnect.

Note: The sel

2. High voltage is supplied to all motor starters and control
transformer(s).
supplied to the control circuits.

3. The HMI LCD (located on or in, visible through the door)
mai
System Screen. See

4. There is a 10 second delay in the eq
power is activated by the selector switch.

Figure 3. HMI LCD

ector switch will illuminate indicating the

equipment is energized.

The control voltage (115V/1Ø/60Hz) is

n control enclosure is energized and will display

Figure 3.

uipment start-up once

Normal Start-up

Normal start-up occurs when the main selector switch (SS01)
is placed in the MANUAL or AUTO position with a customer­supplied auxiliary interlock (dry-contact) closed between
TB06#61 and TB06#I0.2.

Shutdown

A normal shutdown will occur if:

• Selector switch (SS01) is maintained in the OFF position.

• Selector switch (SS01) is maintained in AUTO position
with a contact opening across TB06 # 61 and TB06 # I0.2.

• A fault has occurred.

Normal shutdown sequence of operation:

1. The reactivation control proportional control loop and fault
circuits are de-energized.

2. The process control loops are de
system and DH warnings. See

Warnings,” p. 11

3. A purge timer in the (PLC1) is a delay time with a fixed, on

of three minutes. This allows the air to continue to cool

time
the desiccant wheel. When the timer has completed its
count cycle, the desiccant wheel drive motor (MTR1), the

.

-energized in the list of

“List of System and DH

SRV-SVX04C-EN 9

Installation - Controls

reactivation blower motor (MTR2), and supply blower
motor (MTR3-optional) are all de-energized.

NOTICE

Equipment Damage!

Failure to follow all instructions could result in
equipment damage!

Do not shut down unit by de-energizing main power
pr

ior to the completion of the purge cycle. Wait for
PURGING to change to STANDBY or READY before de­energizing main power.

Faults and Warnings

Important: Press ESC or Help button twice quickly to exit

back to the system screen at any time during
screen navigation.

Table 5. List of system and DH faults

Fault Description

If the desiccant drive motor starter/protect

The system will go into the shutdown (

acts close in sequence (

cont
blower (optional) will purge.

The dehumidifier will be held in the Fault condit

FAULT - D/H WHEEL MOTOR STARTER PROTECTOR

TRIPPED

FAULT - REACTIVATION MOTOR STARTER
PROTECTOR TRIPPED

FAULT - SUPPLY BLOWER MOTOR STARTER
PROTECTOR TRIPPED/ VFD FAULT (optional)

To restart the dehumidifier:

1. Clear the alarm pressing the acknowledge ACK on the HMI.

2. Reset the overload, go to the ALA
the PLC.

To restart the system:

1. Move the selector switch (SS01) to the OFF position.

2. Move the (SS01) back to the AUTO or MANUAL position.

If the reactivation blower motor starter/protector

The dehumidifier goes into t

operation:,” p. 9

The dehumidifier will be held in the Fault condition by (PLC1).
To restart the dehumidifier:

1. Clear the alarm pressing the acknowledge ACK on t

2. Reset the overload, and go to the ALARM screen, and press the F4 RESET key, which
resets the PLC.

To restart the system:

1. Move the selector switch (SS01) to the OF

2. Move the (SS01) back to the AUT

If the supply blower motor starter/protector (MSP3) trips or the customer-supplied variable
frequency drive (VFD) goes into a Fault, the system is faulted.

The system goes into the shutdown sequence. See

, and “Auxiliary Dry Contacts - Operational System States,” p. 9.

p. 9

The dehumidifier will be held in the Fault condition by (PLC1).
To restart the dehumidifier:

1. Clear the alarm pressing the acknowledge ACK on t

2. Reset the overload, and go to the ALARM scree
resets the PLC.

To restart the system:

1. Move the selector switch (SS01) to the OFF position.

2. Move the (SS01) back to the AUTO or MANUAL position.

and “Auxiliary Dry Contacts - Operational System States,” p. 9.

Alarm Indication

Fault and warning indication include the HMI display and fault
warning lights. The HMI will display the blinking triangle with
exclamation point and the fault message on the Alarm screen.

Figure 4.

See

A fault results in the red light (L

Figure 4. HMI alarm indication

or (MSP1) trips, the system is faulted.

“Shutdown,” p. 9) sequence and the system auxiliary dry

“Auxiliary Dry Contacts - Operational System States,” p. 9), process

ion by (PLC1).

RM screen, and press the F4 RESET key, which resets

(MSP2) trips, the system is faulted.

he shutdown sequence. See

F position.

O or MANUAL position.

“Normal shutdown sequence of operation:,”

n, and press the F4 RESET key, which

T02) constantly illuminating.

“Normal shutdown sequence of

he HMI.

he HMI.

10 SRV-SVX04C-EN

Table 5. List of system and DH faults (continued)

Fault Description

Limit switch (LS01) is wired normally closed and located inside the dehumidifier wheel
compartment next to desiccant wheel. As the wheel turns, a cam fastened to the wheel housing
opens this limit switch.

If limit switch (LS01) is not opened once every 600 seconds, a timer in (PLC1) times out the
system is faulted.

The system goes into the shutdown sequence. See

and “Auxiliary Dry Contacts - Operational System States,” p. 9.

p. 9

FAULT - DEHUMIDIFIER WHEEL ROTATION

FAULT – REACTIVATION ELECTRIC HEATER

OVERTEMPERATURE

The dehumidifier will be held in the Fault condition by (PLC1).
To restart the dehumidifier:

1. Clear the alarm pressing the acknowledge ACK on the HMI.

2. Reset the overload, and go to the ALARM screen, and press the F4 RESET key, which
resets the PLC.

To restart the system:

1. Move the selector switch (SS01) to the OFF position.

2. Move the (SS01) back to the AUTO or MANUAL position.

Temperature switch (TS01) is in the reactivation electric heater and will detect extreme
temperature level or heat buildup.

Temperature switch (TS01) is in the reactivation heated to duct and will detect extreme
temperature level or heat buildup.

The system goes into the shutdown sequence. See

p. 9

and “Auxiliary Dry Contacts - Operational System States,” p. 9.

The dehumidifier will be held in the Fault condition by (PLC1).
To restart the dehumidifier:

1. Clear the alarm pressing the acknowledge ACK on the HMI.

2. Reset the overload, and go to the ALARM screen, and press the F4 RESET key, which
resets the PLC.

To restart the system:

1. Move the selector switch (SS01) to the OFF position.

2. Move the (SS01) back to the AUTO or MANUAL position.

Installation - Controls

“Normal shutdown sequence of operation:,”

“Normal shutdown sequence of operation:,”

List of System and DH Warnings

WARNING – REACTIVATION LOW TEMP

LOW TEMP (Reactivation Low Temperature Fault Set point).
The adjustment range is 90.0 to 110.0. The parameter
corresponds to the value of the set point in engineering units
(Typical set point = 110°F).

Proportional Control Loops/ DH Interlocks

Reactivation Heat Energy Control

• The reactivation electric heater solid state relays will
accept a 0-10V modulating signal from the logic controller
to control the reactivation inlet air temperature.

• This is sensed by the reactivation air inlet temperature
transmitter (TC01).

• The reactivation inlet temperature set point will vary based
on the reactivation outlet control PID loop to maintain
maximum, required reactivation inlet temperatures over a
wide range of DH load conditions.

• When the reactivation outlet PID loop output is 0% the
reactivation inlet set point will be 200°F.

• When the reactivation outlet PID loop output is 100% the
reactivation inlet set point will be 325°F.

SRV-SVX04C-EN 11

Installation - Controls

Human Machine Interface Control 
(Op73 Simatic Panel)

Note: Other visual options are password protected for

FACTORY USE ONLY.

Table 6. Screen descriptions, navigation, and security

System Screen is the first screen that comes up when power is applied to the equipment (Figure 2). The System screen displays the equipment’s operational status
along with separate indication for the Reactivation air stream. The System screen also acts as the navigation portal for all of the screens configured in the system.
All navigation references in this section assume the operator starts on the System screen. At any time during navigation, the ESC button on the Simatic Panel may
be pressed twice to return to the System screen.

“SYSTEM” displays the modes of operation of the process as listed below:

READY The system is ready to run and there are no f

RUNNING The system is running, and process control loops are running if enabled.

FAULTED The system has faulted.

PURGING The system is going through a shutdown seque

REACT Displays the modes of operation of the dehumidifier as listed below:

READY The DH is ready to run and there are no faults, and the interlocks are made.

RUNNING The DH is running, and process control loops are running if enabled.

FAULTED The DH has faulted.

PURGING The DH is going through a shutdown sequence and is purging.

STANDBY The system is running, and the DH stopped because the

aults and the interlocks are made.

nce and is purging.

re is no call for dehumidification (full bypass).

1. Reactivation Temperature

a. Pressing the Up Arrow once navigates to this screen

(

Figure 5).

b. The Reactivation Temperature screen displays the real

dication of the reactivation inlet and outlet

time in
temperatures (degrees Fahrenheit).

Figure 5. Reactivation temperature

2. Date/Time

a. Press the Up Arrow twice navi

(

Figure 6).

gates to this screen

b. The Date/Time screen displays the current date and

This may be configured by the customer using the

time.
correct username and password.

c. The display will change to the Username and Password

screen (

Figure 7), prompted by pressing F1.

Figure 6. Date and time

Figure 7. Username and password

3. Username and Password

The operator will be prompted by the password screen
(

Figure 7) when secure parameters are accessed.

Important: C

ontact Rental Services Technical Support if a

password is required.

The ENTER

button will reverse highlight the character for

editing.

a. Use the arr

ow buttons as necessary to select the

desired characters.

b. Once the last character h

as been located, press
ENTER, to proceed to the password window. Important!
Do not press any arrow.

12 SRV-SVX04C-EN

Installation - Controls

c. Press ENTER again to edit the password.

d. Once the last character has been located press

ENTER. Do not press any arrow.

e. OK wil

l display a dotted box. Press ENTER to accept,
and the screen will return to make the selection without
security restriction.

4. Run Time Meter

a. Press the Down Arrow once to navigate to this screen

Figure 8).

(

Figure 8. Runtime meter

Table 7. System loops

1. Press F2 (ALM) to navigate to this screen (

2. The Alarm screen displays the Faults and Warnings the system encountered during operation. The triangle with exclamation

Alarms

F4 Reset

F1 CLEAR History

point will indicate to the operator when an alarm condition exists.

3. Press the ACK button to clear the current alarm message without clearing the history.

Note: The Alarm Screen displays and records information on triggered alarms. Each time an alarm is triggered, it is added to the Alarm History

list

Figure 10, and the last alarm is displayed.

1. The operator must press the F4 button to reset a fault in the PLC. This will clear all system faults and enable the equipment to
be restarted by cycling the selector switch.

2. The selector switch may also be used as the system reset by turning it to the OFF position and return it to the AUTO or MANUAL
position.

3. Press the a

4. The system screen will display READY after a fault has been reset.

1. The alarm history (see
alarms stored.

2. To clear the alarm history, press F1.

3. Enter the User

cknowledge button (ACK) to clear the message and alarm symbol indication.

Figure 10) can be viewed by pressing the Down Arrow first and both Up and Down Arrows to scroll the

name and Password to clear the history.

b. The Run Time Meter screen displays the amount of

time in hours the equipment has been operating. There
is an indication for DH displaying the amount of time
dehumidification has been requested and operating.
These values, shown in hours, may vary dependent on
the configuration of the equipment.

5. Control Group Selection 1*

a. Press F1 (PID

b. The OP73 Display may prompt the operator for

rname and Password (

Use

ed. See section 834 for information regarding

proce
Username and Password. The Control Group Selection
1 screen displays the various system loops available on
the equipment.

Figure 9).

) to navigate to this screen (

Figure 10). Enter this to

Figure 9).

Figure 9. Alarm

Figure 10. Alarm history list

SRV-SVX04C-EN 13

Fan Curve

Figure 11. Fan curve

14 SRV-SVX04C-EN

Shutdown and Maintenance

Shutdown Guidelines

Refer to “Shutdown,” p. 9 for unit shutdown procedure.

Maintenance Guidelines

The motor and blower bearings are permanently lubricated
and require no maintenance. The desiccant wheel is belt
driven. The drive belt should be examined periodically for wear
and correct tension.

Each unit is provided with disposable filters that are installed in
the return air section. The filter access panel must be removed
to gain access to the filters. Check filters periodically to verify
that they are clean.

SRV-SVX04C-EN 15

Wiring Diagrams

Figure 12.

Figure 13.

16 SRV-SVX04C-EN

Figure 14.

Wiring Diagrams

Figure 15.

SRV-SVX04C-EN 17

Wiring Diagrams

Figure 16.

Figure 17.

18 SRV-SVX04C-EN

Figure 18.

Wiring Diagrams

Figure 19.

SRV-SVX04C-EN 19

Wiring Diagrams

Figure 20.

Figure 21.

20 SRV-SVX04C-EN

Notes

SRV-SVX04C-EN 21

Notes

22 SRV-SVX04C-EN

Notes

SRV-SVX04C-EN 23

Trane - by Trane Technologies (NYSE: TT), a global climate innovator - creates comfortable, energy efficient
indoor environments for commercial and residential applications. For more information, please visit trane.com
or tranetechnologies.com.

Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. We
are committed to using environmentally conscious print practices.

SRV-SVX04C-EN 06 Aug 2022

Supersedes SRV-SVX04B-EN (Jul 2020)

©2022 Trane