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BAC-120063CW-ZEC FlexStat 

     11 

Installation and Configuration Guide, Rev. G

Troubleshooting

•  For optimal temperature control, all spaces 

within a particular zone should be exposed to 

similar environmental factors (e.g., all border a 

perimeter wall or all be within insulated interior 

spaces). Otherwise, for example, depending on 

the weather, perimeter spaces may consistently 

need heating when interior spaces consistently 

need cooling.

•  The DAT sensor must be properly connected and 

configured. See 

Input Connections on page 6

 

and 

Configure the Application and Address on 

page 7

.

•  The Device Instance of the FlexStat should 

correspond with the Device Instance range of the 

SimplyVAVs. See 

Configure the Application and 

Address on page 7

.

•  Check the wiring. See 

Wiring Considerations on 

page 5

Output Connections on page 5

Input Connections on page 6

Power Connec-

tion on page 6

, and 

Network Wiring on page 

6

.

•  Check EOL switches. See 

Network EOL (End-Of-

Line) Termination on page 7

.

•  See also 

Zone Status on page 10

.

•  See also 

Setpoints on page 8

.

•  See also 

Schedules on page 9

.

•  See also 

Zone Hysteresis (Changeover) on page 

10

.

•  See also 

Sequence of Operation on page 10

.

•  See the relevant parts of the Troubleshooting 

section in the 

FlexStat Operation Guide

.

Maintenance

Remove dust as necessary from the holes in the top 

and bottom. Clean the display with a soft, damp 

cloth and mild soap.

Customization

Additional customization can be done using KMC 

Connect, KMC Converge, or TotalControl. For ex-

ample, a fan status switch (such as a KMC 

CSE-110x

 

or a 

CSE-120x

) could be connected to IN3 (with the 

appropriate pull-up switch setting) and the following 

code could be run in Program 9 or 10.

REM FAN STATUS
REM A Normally Open dry contact 

switch is connected to AI3 (with 

pull-up switch set to 10K ohms)
REM BV16 shows Active when switch is 

closed (fan running) and Inactive 

when switch is open (not running)

IF

 AI3 < 0.5 

THEN

 BV16 = 1 

ELSE

 BV16 

= 0

NOTE:

  Set the program to Run on Cold Start, save 

it, and restart the FlexStat.

The value of BV16 (active or inactive) could then be 

displayed on a card in the KMC Commander inter-

face or a TotalControl graphics page.

Remote (BAC-5051E) Interface

The BAC-5051E BACnet router provides a means of 

remotely monitoring and changing the configuration 

of the zoning system with a web browser. For more 

information, see the 

BAC-5051E Router Application 

and Installation Guide

.

Summary of Contents for FlexStat BAC-120063CW-ZEC

Page 1: ...mounting screws supplied by KMC Controls Using other screws may damage the FlexStat Do not turn screws in farther than necessary to remove the cover 2 If the cover is locked on the backplate turn the hex screws in the bottom and top of the FlexStat CLOCKWISE until they just clear the cover See Illustration 1 Pull the cover away from the backplate mounting base 3 Route the wiring through the backpl...

Page 2: ...or Ethernet Cable Up to 75 Feet Long MS TP Network STE 8x01 Room Temp Sensor and Configuration Tool Supply Air to Room Supply Air from RTU Zone 1 MAC 3 Device Instance 1000001 RTU Controller MAC 20 Device Instance 1000000 Zone 16 MAC 19 Device Instance 1000016 Illustration 2 Sample Networked RTU Installation CSP 4702 To HI Port DAT Displayed Roof Top Unit RTU Supply Air Return Air STE 140x Temp Se...

Page 3: ...tional AI9 IN8 Unused in this application AI8 IN7 Unused in this application AI7 IN4 Unused in this application AI4 IN3 Unused in this application AI3 GND Ground IN2 DAT AI2 NOTE The DAT sensor is configured for IN2 in the ADVANCED APPLICATION ADDITIONAL SETUP SENSORS menu NOTE Although typical terminal code letters are shown check the schematics of your unit for wiring details CAUTION Relays are ...

Page 4: ...UP ZONE HEAT PUMP 1 or 2 Compressors with Auxiliary and Emergency Heat NOTE Although typical terminal code letters are shown check the schematics of your unit for wiring details CAUTION Relays are for Class 2 voltages 24 VAC only Do not connect line voltage to the relays Do not mistakenly connect 24 VAC to an analog output ground Illustration 4 HPU Application Connections Input Terminals HPU Input...

Page 5: ... A IN4 IN3 GND IN2 Common C Phase R Analog 9 GND 7 9 Analog 8 Analog 7 Relay 6 SC 4 6 Relay 5 Relay 4 Relay 3 SC 1 3 Relay 2 Relay 1 Outputs Wiring Cutout in Backplate MS TP Network Inputs 24 VAC Wiring is dependent on application Inputs NOTE IN1 and IN5 6 are reserved for internal sensors NOTE SC Switched relay Common Output Connections Connect the device under control between the desired output ...

Page 6: ...od practices when connecting an MS TP network see Planning BACnet Networks Application Note AN0404A For the bank of three relays there is one Switched relay Common connection in place of the GND ter minal used with analog outputs See Illustration 6 For the relay circuit the phase side of the AC should be connected to the SC terminal FlexStat relays are NO SPST Form A Do not attach a device that dr...

Page 7: ...figuration and Operation Illustration 9 FlexStat Display and Button Functions Right Menu Left Override Down Up NOTE For additional information see the relevant parts of the Configuration section in the FlexStat Operation Guide but not all things apply to this model NOTE Settings and adjustments may require a password DAT Zone Information of Zones of Zones Calling for Cooling and of Zones Calling f...

Page 8: ...tem is stand alone address the FlexStat for MAC 20 Device Instance 1000000 See Illustration 2 To set the FlexStat s BACnet Device Instance and optionally name and location 1 Select ADVANCED enter password if needed and then DEVICE 2 Change or confirm INSTANCE to 1000000 DEVICE INSTANCE NAME ZEC_FlexStat_1 LOCATION KMC Controls 1000000 To configure the MAC address from the Main Menu select ADVANCED...

Page 9: ...Number of calls for heating AV25 at 1 minute intervals from SimplyVAVs 7 Duct static pressure AV103 at 1 minute intervals from an optional CSP 4702 8 Duct static pressure setpoint AV104 at 1 minute SETPOINTS COOL DAT SETPOINT HEAT DAT SETPOINT 130 F DUCT ST STPT 0 5 in H2O 55 F The optional duct static pressure setpoint is also in this menu NOTE The airflow minimum limit in each SimplyVAV controll...

Page 10: ...ns for each zone s values are Call for Cooling Call for Heating No Call for Either Sequence of Operation NOTE The HPU and RTU sections of the FlexStat Application Guide have some basic generic information about HPU and RTU operation The BAC 120063CW ZEC FlexStat determines RTU HPU heating or cooling mode by majority rule of the number of heating and cooling calls from the SimplyVAV controllers If ...

Page 11: ...hangeover on page 10 See also Sequence of Operation on page 10 See the relevant parts of the Troubleshooting section in the FlexStat Operation Guide Maintenance Remove dust as necessary from the holes in the top and bottom Clean the display with a soft damp cloth and mild soap Customization Additional customization can be done using KMC Connect KMC Converge or TotalControl For ex ample a fan statu...

Page 12: ...rmation about this model FlexStat on the BAC 120063CW ZEC web page For general operation configuration troubleshoot ing and other information see the generic FlexStat Operation Guide and FlexStat Application Guide See also the BAC 8000 series for information about the VAV controller actuators See also the CSP 4702 page for information about the differential pressure controller actuator For remotel...

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