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TCS SZ1025b, Product Manual

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TCS SZ1025b Product Manual Download Page 2

2800 Laura Lane Madison, WI 53562  |  800.288.9383 Fax: 608.836.9044  |  www.tcsbasys.com  

2

TABLE

 

OF CONTENTS

Manual Key

Table of Contents

Caution:   

Requires special attention.

Note:   

Something you should know.

The following symbols are used throughout this document. Their meanings are as follows:

Manual Key    .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 2
Features   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 3
Mounting   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 3
Wiring   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 4
Setup    .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 5
Programming    .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 5
Sequence of Operations   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 10
Checkout & Troubleshooting   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 10
LED Description    .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 12

Summary of Contents for SZ1025b

Page 1: ... Lane Madison WI 53562 800 836 9044 Fax 608 836 9044 www tcsbasys com v0717 2 The SZ1025b is a microprocessor based controller designed for VAV terminal unit applications SZ1025b VAV Box Controller PRODUCT MANUAL ...

Page 2: ...y Table of Contents Caution Requires special attention Note Something you should know The following symbols are used throughout this document Their meanings are as follows Manual Key 2 Features 3 Mounting 3 Wiring 4 Setup 5 Programming 5 Sequence of Operations 10 Checkout Troubleshooting 10 LED Description 12 ...

Page 3: ...outputs Interface available for tri state actuator motors QE25 Separate heating and cooling minimum and maximum CFM settings Four independent dry contact outputs Remote setpoint capability Discharge air sensor input Filter monitor input External time clock input Use two 10 sheet metal screws to mount the SZ1025b For best results the room sensor should be mounted on an interior wall that reflects n...

Page 4: ...e powered from the same transformer provided that the transformer has enough power Caution When multiple TCS Basys Controls devices are using a single transformer the polarity of the power wiring must be maintained because all TCS devices are half wave rectified TS2023a wiring to SZ1025b Optional QE25 Tri state interface wiring PX1060 wiring to SZ1025b Twisted Shielded 18 AWG Must be run separatel...

Page 5: ...Mode when pressed with the Scroll key Also used to exit programming without saving changes to the cur rent screen Increment Decrement Keys Used to select the desired value Programming Zone temp 71F Main Monitoring Screen Press the scroll and next buttons to access the following screens Access Code Entry Screen Enter the access code If the wrong code is entered the prorm reverts to the main screen ...

Page 6: ...elected skip to step 28 Setpoint High Limit Value Screen Enter a setpoint high limit value The setpoint will not be allowed to be set higher than this setting Setpoint Source Screen Select wheth er you are using a RTD3 or Remote Setpoint Setpoint Screen Enter a setpoint value for control This screen does not appear if Remote Setpoint is programmed in software Occupied Deadband Screen Enter an occu...

Page 7: ...t or reverse acting Anolog Output 2 Choice Screen Choose whether the output will be modu lating AO2 or floating NO7 NO8 Anolog Output 2 Mode Screen Choose whether the output will be used for heat ing or cooling Anolog Output 2 Setpoint Screen Enter the number of degrees you wish to offset the output from setpoint Anolog Output 2 Proportional Band Screen Enter in of input span 40 to 90 the number o...

Page 8: ...OFFSET 0F 51 STAGE 4 DIFF 1F 52 not yet implemented v 2 05 NO4 Differential Screen Enter a differential value for Stage 4 Programming Access Screen Choose whether or not a code will be required to enter programming setup Access Code Screen Enter an access 0 to 255 code that will be used to enter the programming and or clock and schedule setups if access code had been rrequired in the last two step...

Page 9: ...2 n R T D 7 0 F 2 n R T D 7 0 F 2 n R T D 7 0 F 2 n R T D 7 0 F CFM SETPOINT DETERMINATION Output Direct Acting Reverse Acting DB Room Temp F SP Max Cooling CFM P temp DB Min Cooling CFM DB Room Temp F SP Max Heating CFM P temp DB Min Heating CFM CFM SP CFM Measured 20 12 4 P CFM CFM SP CFM Measured 20 12 4 P CFM CFM SP CFM Measured 20 12 4 P CFM CFM SP CFM Measured 20 12 4 P CFM CFM SP CFM Measur...

Page 10: ...a tion to close the valve motor The power that CW2 and CCW2 provide to the valve motor must not exceed 200 mA 1 Be sure to check and verify all wiring before powering the SZ1025b 2 Turn power on The SZ1025b display LED should light up 3 If the SZ1025b has not been pre programmed it should be programmed at this time 4 Increase the setpoint on the analog TS2032a or digi tal PX1060 zone sensor Observ...

Page 11: ...irect Acting Reverse Acting Reverse Acting Room Temp F 4 20 Deadband Setpoint Offset Proportional Band Room Temp F 4 20 Deadband Setpoint Offset Proportional Band Room Temp F 4 20 Proportional Band Setpoint Offset Deadband Room Temp F 4 20 Proportional Band Setpoint Offset Deadband SP SP SP SP Modulating Output AO2 mA Output mA Output mA Output mA Output DI1 OFF DI2 OFF 10 ZONE TEMP 71 Shows the p...

Page 12: ...SZ1025b POWER This LED will be lit whenever the unit has power CW and CCW These four LEDs will be lit when the corresponding tri state relay is active The upper two indicate the relays and the lower two indicate the CW1 CCW1 CW2 CCW2 relays PROGRAM DATA This LED will blink when the unit is being accessed via the RS485 network or via the push but tons LED Description ...

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