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Installation - Controls

SRV-SVX04C-EN

11 

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.

FAULT - 

DEHUMIDIFIER WHEEL ROTATION

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 

“Normal shutdown sequence of operation:,” 

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. 

FAULT –

 REACTIVATION ELECTRIC HEATER 

OVERTEMPERATURE

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 

“Normal shutdown sequence of operation:,” 

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. 

Table 5.

List of system and DH faults (continued)

Fault

Description

Summary of Contents for SRV-SVX04C-EN

Page 1: ...e 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...

Page 2: ...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 app...

Page 3: ...cal regulations Introduction SRV SVX04C EN 3 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 permissio...

Page 4: ...uxiliary 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...

Page 5: ...ectrical power required 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 coolin...

Page 6: ...pm P ft Post Cool 4750 366 1 58 10 10 12 57 24 5 Table 3 Dimensions and weights Length Width Height Weight 15 ft 2 in 6 ft 2 in 6 ft 5 in 4175 lb Rigging DHUs are equipped with fork pockets on two sid...

Page 7: ...ess 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 so...

Page 8: ...lectrical 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 Yes Unit Power 46...

Page 9: ...evices 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...

Page 10: ...ad 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...

Page 11: ...ot opened once every 600 seconds a timer in PLC1 times out the system is faulted The system goes into the shutdown sequence See Normal shutdown sequence of operation p 9 and Auxiliary Dry Contacts Ope...

Page 12: ...e 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...

Page 13: ...LM to navigate to this screen Figure 9 2 The Alarm screen displays the Faults and Warnings the system encountered during operation The triangle with exclamation point will indicate to the operator whe...

Page 14: ...14 SRV SVX04C EN Fan Curve Figure 11 Fan curve...

Page 15: ...nently 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 filter...

Page 16: ...16 SRV SVX04C EN Wiring Diagrams Figure 12 Figure 13...

Page 17: ...Figure 14 Figure 15 Wiring Diagrams SRV SVX04C EN 17...

Page 18: ...Figure 16 Figure 17 Wiring Diagrams 18 SRV SVX04C EN...

Page 19: ...Figure 18 Figure 19 Wiring Diagrams SRV SVX04C EN 19...

Page 20: ...Figure 20 Figure 21 Wiring Diagrams 20 SRV SVX04C EN...

Page 21: ...Notes SRV SVX04C EN 21...

Page 22: ...Notes 22 SRV SVX04C EN...

Page 23: ...Notes SRV SVX04C EN 23...

Page 24: ...are committed to using environmentally conscious print practices Trane by Trane Technologies NYSE TT a global climate innovator creates comfortable energy efficient indoor environments for commercial...

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