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BAC-1xx30 Series (3 Relays and 0 Analog Outputs) Section

Application Guide L

Sequence of Operation (BAC-1xx30)

For common features, see

FlexStat (All Models) Common Features on

page 31

For HPU applications, see relevant sections in

HPU (Heat Pump Unit)

on page 41

For AHU, Heating Unit, and Cooling Unit applications, see relevant

sections in

Sequence of Operation (BAC-1xx36/1xxx36) on page 50

Summary of Contents for FlexStat

Page 1: ...cations 11 Adding a Remote Temperature Sensor to an Input 11 Calibrating a Temperature Sensor 12 Displaying the Current Setpoint 13 Displaying Outside Air Temperature 14 Displaying Other Objects 14 Mapping Analog Inputs or Outputs as Binary 15 Motion Sensor Applications 15 Using Sensors Connected to Other Controllers 15 CO2 Sensors and DCV 16 Custom Web Graphics 17 Hospitality and Locked User Inte...

Page 2: ...nd BAC 1xx136 Only 39 Staged Heating and Cooling Parameters 40 User Interface Display Backlight 40 BAC 1xx63 1xxx63 Applications 40 AHU Air Handling Unit 40 HPU Heat Pump Unit 41 FCU Fan Coil Unit 2 Pipe 43 FCU Fan Coil Unit 4 Pipe 44 RTU Roof Top Unit 45 BAC 1xx36 1xxx36 Series 3 Relays and 6 Analog Outputs 46 Bills of Materials BAC 1xx36 1xxx36 47 AHU Air Handling Unit Multiple H C Options 47 FC...

Page 3: ...ection specific to the BAC 1xx30 series with 3 relays and 0 analog outputs no BAC 1xxx30 series is offered Models with the extra number have three additional inputs and op tions for CO2 sensing BAC 13xxxx and BAC 14xxxx and IP network connections BAC 1xxxxxE All Output Configurations Click for details BAC 1xxxx or BAC 12xxxx FlexStat without CO2 Sensor BAC 13xxxx and BAC 14xxxx FlexStat with CO2 S...

Page 4: ...p use a conductor size that is adequate for the wiring length Allow plenty of cushion to allow for transient peaks during startup Make sure that conduit for all wiring has adequate diameter for all necessary wiring Using 1 inch conduit and junction boxes is recom mended Use external junction boxes above the ceiling or in another conve nient location as needed to make connections that run to the Fl...

Page 5: ...th to the right may result in readings that are only about 1 4 the proper value NOTE ALL the input pull up resistor switches must be fully latched in the correct positions See the Connections and Wiring section of the relevant FlexStat Installation Guide A single incorrect switch position may affect multiple inputs All input switches must be latched in either 10K Ohm or 0 12 VDC positions even if ...

Page 6: ...temperature readings The resistor converts the 4 20 mA current input to a 1 5 VDC voltage that can be read by the thermostat s analog to digital converter 2 Set the corresponding pull up switches to the 0 12 VDC position 3 Using BACstage or TotalControl configure the input device type for a 4 20 mA source 1 2 3 4 5 6 3 4 3 4 IN4 0 12 V 5 6 7 8 7 8 IN2 7 8 Pushed Left Pushed Right 1 2 ON 10K Ω 0 12...

Page 7: ...nect 24 VAC to an analog output ground This is not the same as a relay s switched common See the backplate s terminal label for the correct terminal CAUTION Relays are for Class 2 voltages 24 VAC only Do not connect line voltage to the relays Connect the device under control between the desired output terminal and the related SC Switched Common for relays or GND Ground for analog outputs terminal ...

Page 8: ...run after a restart Auto Run should be set to True in the FlexStat menu or from BACstage or TotalControl See also the Resetting the FlexStat section in the FlexStat Operation Guide CB Programs PROG1 PROG2 RUNNING PROG3 RUNNING PROG4 RUNNING PROG5 RUNNING PROG6 HALTED PROG7 IDLE RUNNING PROGRAM 1 SETPOINTS MODES AUTO RUN CHANGE READY STATE RUNNING HALT REASON NORMAL HALT DESC OUT OF SERVICE FALSE T...

Page 9: ...the model AHU_CODE FCU_2_PIPE_CODE etc In firmware R1 3 0 8 and after the branch code section is somewhere around line 518 in BAC 1xx63 line 522 in BAC 1xx36 or line 370 in BAC 1xx30 and comes after END_COMMON_CODE END Searching for COMMON will quickly find the line Earlier firmware versions do not have this convenient flag In BAC 1xx63 firmware R1 3 0 4 and earlier the branch code section is some...

Page 10: ...BAC 1xxxx Point Definitions file NOTE See also Viewing the Control Basic Programs on page 8 NOTE Customized programs are the responsibility of the user KMC Controls does not provide support for such programs Programs During Upgrades and Factory Restores NOTE If custom Control Basic programs are installed and a restore to factory settings is performed all factory programs are restarted but all cust...

Page 11: ...BACstage or TotalControl 1 Configure the original space temperature AI1 object to Out Of Service 2 Configure the input for the added room temperature sensor input Type III is the default thermistor type for AI2 AI4 and AI7 AI9 3 Add the following Control Basic program In this example the ap plication has input 2 open use another input instead as needed AI1 AI2 4 Restart the FlexStat APPLICATION DE...

Page 12: ...e R1 3 0 4 Fahrenheit readings had a default offset of 32 The method of temperature value calculation then changed and the default offset is now 0 NOTE With R2 0 0 13 and later firmware Fahrenheit temperature values on the display change in whole degree increments by default and Celsius values change in 0 5 increments Changing the default No to Yes will show tenths of a degree values for both scal...

Page 13: ... UI mapped value 4 SETPOINT Current Setpoint and configure units for F or C as needed 2 Write the following Control Basic program to assign the current setpoint present value AV27 to AV25 and configure it to auto run AV25 AV27 3 Restart the FlexStat NOTE If several readings objects are configured to show in the field the field will sequentially show each one For models with humidity sensors which ...

Page 14: ...te AN0410A Measuring Outside Air Temperature on the KMC web site Displaying Other Objects To display another object not part of the Rotation Values menu on the bottom right of the screen modify Analog Value AV25 and write a value to the object in Control Basic For example to display the Mixed Air Temperature in the economizer as suming a sensor is attached to Input 3 in AHU and RTU applications us...

Page 15: ...am will work with a built in motion sensor enabled or disabled It will also work with FlexStat models that have no built in motion sensor Using Sensors Connected to Other Controllers The FlexStat can use sensors connected to remote controllers on the same network For example an outside air temperature sensor is wired to AI3 of a different networked controller with Device Instance 2010 This program...

Page 16: ... with highly CO2 Sensors and DCV variable occupancy such as meeting rooms classrooms theaters gyms retail stores and hotels With a built in CO2 sensor the BAC 13xxxx series FlexStat uses patented self calibration techniques designed to be used in applications where concentrations will drop to outside ambient conditions approximately 400 ppm at least three times in a 14 day period typically during ...

Page 17: ...ting web graphics pages in TotalControl or BACstage the following objects are the most commonly used NOTE To prevent locking out the FlexStat s user interface and programs be careful about writing to correct priority levels See the 8 and 9 notes in the illustration below If locking out the FlexStat s user interface is desired write to a higher priority level i e 7 8 from the web interface If on th...

Page 18: ...ide about Single Setpoint vs Schedule options NOTE Menus depend on the configured options A three speed fan will display Auto Low Medium and High but a one speed fan will only display Auto and On NOTE Auto in System Mode does not currently have an icon implemented with it Manually selecting Heat or Cool will display an icon on the Home screen Pushing Left Button Goes to Field A Screen Field A Sele...

Page 19: ...he current date and time information 4 To access and make changes in the hidden Main Menu use the Up Down buttons to navigate to the SECOND blank line below the Time line and press the Enter button NOTE Access to this hidden menu is password protected if both the Operator and Administrator passwords are not 0000 Entering either an Operator or Administrator level password accesses the Main menu a U...

Page 20: ...age 17 as well as the Control Basic program section below to determine values to control Custom programming can be put into the FlexStat See the Control Basic program section below and Custom Programming on page 8 Control Basic Programs For the Schedule option add an equivalent of the following Control Basic lines REM Reset Hospitality Mode Setpoints to Schedule Defaults IF TIME 23 59 00 THEN GOSU...

Page 21: ...s limited to seven characters for A and B and ten for C Hospitality Mode Multi State Variables Function Variable Comments User Interface UI Mode MSV9 1 Standard Mode 2 Hospitality Mode 3 Locked UI Mode Field A Left Button MSV10 Present Value Selects Menu Text BV28 1 Animates Icon Field B Right Button MSV11 Present Value Selects Menu Text BV29 1 Animates Icon Field C MSV12 Present Value Selects Men...

Page 22: ... mode shall remain on until the next time a door is opened or closed and the timed period begins again Custom programming is required The effective detection range is approximately 10 meters or 33 feet Factors that may reduce the range include Too small of a difference in object surface temperature compared to the background temperature Object movement in a direct line toward the sensor Very slow ...

Page 23: ... is enabled or disabled from the Motion Sensor menu firmware version R1 2 0 6 and later During scheduled off unoccupied times the motion sensor when enabled will start occupancy override for 1 hour as a default when it detects motion Occupancy override will end with the default setting 1 hour after motion was FIRST detected This functions similarly to the override when a setpoint change is detecte...

Page 24: ... status object used to control the HVAC system is BV1 active state is Occupied If motion is detected while the door is closed occupancy mode is on indefinitely until the door opens After the door closes again and no motion is detected while the door is closed the FlexStat will go into unoccupied mode after the System Occupancy Override time expires Adding a Door Contact for Additional Control Addi...

Page 25: ...ays switches in the remote sensors In such a case the input pull up resistors should be set to 10K ohms and SNSR2 in the Application menu must be set to NOT USED NOTE To trigger the occupancy override the remote sensor contacts must stay closed for two seconds or longer SYSTEM SYSTEM ENABLE AUTO OCC OVRIDE HRS INACTIVITY SECS 60 DISPLAY BLANKING NO 0 5 NOTE All Schedules must be deleted or set to ...

Page 26: ...l arising out of or related to the use of this document Troubleshooting Motion Sensor Operation The initial firmware R 1 0 0 0 and earlier did not support this sen sor within the built in selectable programs Custom programming was required Upgrade to the latest firmware for built in support After an initial power up or restart the motion sensor requires about 30 seconds before it will begin respon...

Page 27: ...e 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 IP Ethernet Network Optional NOTE IN1 and IN5 6 are reserved for internal sensors NOTE SC Switched relay Common BAC 12xx63 Terminals BAC 13xx63 14xx63 Terminals Are Rotated 90 BAC 1xx63 Terminal...

Page 28: ...E II SAE 10xx REMOTE CO2 SENSOR SPACE OR DUCT TX1 XEE 6311 075 TRANSFORMER 120 240 277 480 24 VAC 75 VA CHOOSE ONE OF THE FOLLOWING TRANSFORMERS TX2 XEE 6311 075 TRANSFORMER 120 208 240 480 24 VAC 75 VA TX2 XEE 6311 100 TRANSFORMER 120 240 277 480 24 VAC 96 VA The remote temperature and CO2 sensor options are not shown in the sample installation diagrams and they are available only on BAC 12xxxx 1...

Page 29: ...The remote temperature and CO2 sensor options are not shown in the sample installation diagrams and they are available only on BAC 12xxxx 13xxxx 14xxxx models BILL OF MATERIALS RTU DAMPER ACTUATORS REFERENCE MAX DAMPER AREA IN FT2 KMC PART PART DESCRIPTION OAD or RTD 6 25 MEP 5372 50 IN LB FAIL SAFE ACTUATOR 2 10VDC 19VA OAD or RTD 15 MEP 7252 120 IN LB FAIL SAFE ACTUATOR 0 10VDC 25VA OAD or RTD 2...

Page 30: ...20 240 277 480 24 VAC 50 VA The remote temperature sensor option is not shown in the sample installation diagrams and it is available only on BAC 12xxxx 13xxxx 14xxxx models BILL OF MATERIALS FCU 4 Pipe 2 Position REFERENCE KMC PART PART DESCRIPTION FLEXSTAT BAC 1xx63 1xxx63 BACNET THERMOSTAT 6 RELAY 3 ANALOG OUTPUTS R1 R2 R3 REE 3211 MULTI VOLTAGE CONTROL RELAY 1 2 VA CLV VEZ 4xxxxMBx FAIL SAFE C...

Page 31: ...d to be adjusted down to its minimum limit However the corresponding occupied or unoccupied heating setpoint is always maintained at this minimum setpoint differ ential distance from the cooling setpoint with the heating setpoint being lowered if necessary The FlexStat controls its output operations based on two setpoints ac tive heating setpoint and active cooling setpoint Under normal non overri...

Page 32: ... to the activation of the override mode Once activated in this zero timer mode the occupancy override will expire upon the next normal scheduled change of state of the scheduled occupied mode The following two examples illustrate this operation For both examples assume the override timer is set to zero and the scheduled occupied mode is on at 8 00 AM and off at 5 00 PM Example 1 The override mode ...

Page 33: ...mizer Minimum Posi tion If the unit is configured for economizer during Optimum Start Econ Minimum Position is held to zero as ventilation is not needed until scheduled occupancy begins Optimum Stop calculates the time before the scheduled off time that the space temperature without heating or cooling may be allowed to drift without exceeding the setpoint proportional band or span Nor mal ventilat...

Page 34: ...determines the use of analog input 2 If sensor 2 is configured for fan status the FlexStat performs the fan control sequence as described above If sensor 2 is configured for discharge air temp the FlexStat configures analog input 2 for a 10K type III thermistor This selection is intended for monitoring discharge air temperature of the HVAC unit Note This selection is for monitoring only there is n...

Page 35: ...xxxx 14xxxx models have the Demand Control Ventilation DCV option available DCV combines several options and modes into efficiently controlling the outside air damper DCV is enabled by setting DCV to one of the three configurations The various Outside Air OA settings that are available are the per centage that the OA damper is open and not the percentage of OA flow These settings should be measure...

Page 36: ...e signal to the damper might be controlled by Minimum Position Economizer Loop or other components The maximum of these component values is used not the sum of them If there is a Low Limit alarm however these signals are overridden and the damper is closed DCV Standard Configuration CO2 Setpoint OA Full OA Area 0 Space CO2 CO2 Maximum DCV Signal Component to OAD 100 Standard DCV Configuration CO2 ...

Page 37: ...ove Ventilation Recovery When the supply fan is off unless in Standby mode a ventilation re covery mode with supply fan operation shall be initiated for a variable length recovery period when either Space CO2 exceeds CO2 Max 200 ppm or when the fan has been off for Fan Max Off 30 minutes default After the fan has been off and starts due to a heating or cooling call Max Fan Off or high CO2 level th...

Page 38: ...ation pro ceeds accordingly 2 If the Occupied Fan mode is set to AUTO and there is no call for heat ing cooling or economizer the supply fan stops unless Space CO2 exceeds CO2 Max 100 ppm in which case the fan operates with the OA damper at OC Recov Pos as determined above until Space CO2 CO2 Max Economizer Ventilation When economizer cooling is called for the OA damper shall maintain the economiz...

Page 39: ...on sequence is enabled through the user interface the dehumidification mode starts if the space humid ity rises above the dehum setpoint adjustable default 60 The dehum mode is stopped if the space humidity drops below the dehum setpoint minus the dehum deadband adjustable default 5 Dehumidification mode being started also generates a call for fan if the fan mode is set to Auto Humidification BAC ...

Page 40: ... If the fan mode for a particular occupancy mode is set to con stant or On the valves function in a modulating fashion Actual response may vary slightly due to PI action of the control loops but generally the heating valve will start to open as the space temperature drops below the active heating setpoint and modulate to fully open when space temperature reaches active heating setpoint minus deadb...

Page 41: ...ly as previously described Reversing Valve The reversing valve can be configured through the user interface to be energized on a call for heating B function or energized on a call for cooling O function If the reversing valve is configured to be en ergized on a call for heating B the reversing valve output will be energized any time there is a call for heating and de energized on a call for coolin...

Page 42: ...p further rises above the active heating setpoint minus the deadband the auxiliary heat is de energized If the heat pump application is configured for auxiliary heat with com pressor lockout a compressor lockout mode is enabled if the outside air temperature drops 1 0 F 0 56 C below the Compressor OAT Low Limit The compressor lockout mode is disabled if the outside air temperature rises 1 0 F 0 56...

Page 43: ...ese flags will stay on until the valve goes fully shut for ten minutes or as set in min eval timer or the water drops 2 0 1 1 C out of range If the op posite type of water is available from what type of water is needed e g cooling water is available and there is a call for heating another flag indicating opposite water available is started If the unit goes into op posite water available mode and t...

Page 44: ...s the valve configuration If the valves are configured for modulating action and the fan mode for a particular occupancy mode is set to constant or On the valves function in a modulating fashion Actual re sponse may vary slightly due to PI action of the control loops but generally the heating valve will start to open as the space temperature drops below the active heating setpoint and modu late to...

Page 45: ...he first stage of cooling has been off for at least the minimum off time the first stage of cooling will be energized If the space temp further rises above the active cooling setpoint plus the deadband AND the first stage of cooling has been en ergized for at least the stage delay AND the second stage of cooling has been off for at least the minimum off time the second stage of cooling will be ene...

Page 46: ...Rotated 90 BAC 1xx36 Terminals B A IN4 IN3 GND IN2 Common Phase Analog 9 GND 7 9 Analog 8 Analog 7 Analog 6 GND 4 6 Analog 5 Analog 4 Relay 3 SC 1 3 Relay 2 Relay 1 Outputs Wiring Cutout in Backplate NOTE IN1 is the room MS TP Network Inputs 24 VAC Power temperature sensor AI1 NOTE BAC 1xx36C Terminals Shown IN9 IN8 GND IN7 B A IN4 IN3 GND IN2 Common C Phase R Analog 9 GND 7 9 Analog 8 Analog 7 An...

Page 47: ...HU DAMPER ACTUATORS REFERENCE MAX DAMPER AREA IN FT2 KMC PART PART DESCRIPTION OAD or RTD 6 25 MEP 5372 50 IN LB FAIL SAFE ACTUATOR 2 10VDC 19VA OAD or RTD 15 MEP 7252 120 IN LB FAIL SAFE ACTUATOR 0 10VDC 25VA OAD or RTD 22 5 MEP 7552 180 IN LB FAIL SAFE ACTUATOR 0 10VDC 25VA OAD or RTD 40 MEP 7852 320 IN LB FAIL SAFE ACTUATOR 0 10VDC 40VA NOTE See the corresponding BAC 1xx36 or BAC 1xxx36 Install...

Page 48: ... 10VDC 25VA OAD or RTD 22 5 MEP 7552 180 IN LB FAIL SAFE ACTUATOR 0 10VDC 25VA OAD or RTD 40 MEP 7852 320 IN LB FAIL SAFE ACTUATOR 0 10VDC 40VA BILL OF MATERIALS AHU Modulating Heat and 1 or 2 Cool REFERENCE KMC PART PART DESCRIPTION FLEXSTAT BAC 1xx36 1xxx36 BACNET THERMOSTAT 6 RELAY 3 ANALOG OUTPUTS R1 REE 3211 MULTI VOLTAGE CONTROL RELAY 1 2 VA HTV VEB 43xxxBDL FAIL SAFE CONTROL VALVE W MEP 537...

Page 49: ...OAD or RTD 40 MEP 7852 320 IN LB FAIL SAFE ACTUATOR 0 10VDC 40VA FCU Fan Coil Unit 2 or 4 Pipe Modulating BILL OF MATERIALS FCU 2 Pipe Modulating REFERENCE KMC PART PART DESCRIPTION FLEXSTAT BAC 1xx36 1xxx36 BACNET THERMOSTAT 6 RELAY 3 ANALOG OUTPUTS R1 R2 R3 REE 3211 MULTI VOLTAGE CONTROL RELAY 1 2 VA VLV VEB 43xxxBCK CONTROL VALVE W MEP 4002 0 10V ACTUATOR 4 VA FOR VALVE CHOOSE CAPACITY MODEL FR...

Page 50: ...s When the fan runs whether in Auto or On mode the fan speed is determined by the Output Speed setting If the Output Speed setting is set to fixed then any time the fan is called for it will run at the speed designated by the Fixed Speed setting This allows for the fan speed to be manually set by a balancer If the Output Speed is set to Auto then the speed the fan runs is de termined by both the f...

Page 51: ...any time there is a low limit or fan fail alarm all stages of cooling and heating are deenergized With the fan mode set to Auto the heating valve will open 100 if the space temperature falls below active heating setpoint minus deadband and fully close when space temp rises above active heating setpoint The cooling valve similarly opens 100 if the space temp rises above the active cooling setpoint ...

Page 52: ... air temp setpoint will be 53 0 F 11 7 C The mixed air setpoint will vary linearly in between During unoccupied mode if the space temp exceeds the cooling setback setpoint by deadband and the econ mode is enabled the OA damper shall open as called for by the mixed air temp loop The OA damper shall modulate to maintain 53 0 F 11 7 C until the space temp reaches the cooling setback setpoint at which...

Page 53: ...lag is started and water evalu ation mode ends These flags will stay on until the valve goes fully shut for ten minutes or as set in min eval timer or the water drops 2 0 1 1 C out of range If the opposite type of water is available from what type of water is needed e g cooling water is available and there is a call for heating another flag indicating opposite water available is started If the uni...

Page 54: ...method of controlling the heating and cooling valves is based on the fan configuration If the fan mode for a particular occupancy mode is set to constant or On the valves func tion in a modulating fashion Actual response may vary slightly due to PI action of the control loops but generally the heating valve will start to open as the space temperature drops below the active heating setpoint and mod...

Page 55: ...se R Relay 3 SC 1 3 Relay 2 Relay 1 Outputs Wiring Cutout in Backplate NOTE IN1 is the room temp BACnet MS TP Network Inputs 24 VAC sensor AI1 NOTE SC Switched Relay Common Wiring Inputs and Outputs Dependent on Application 3 Relays and 0 Analog Outputs This section is specific to the BAC 1xx30 series with 3 relays and 0 ana log outputs ...

Page 56: ... 05 12 WC MAT STE 1416 12 DUCT AVERAGING TEMP SENSOR OAT STE 1451 OUTSIDE TEMPERATURE SENSOR TX XEE 6311 075 TRANSFORMER 120 240 277 480 24 VAC 75 VA BILL OF MATERIALS Cooling Unit 1 Cool REFERENCE KMC PART PART DESCRIPTION FLEXSTAT BAC 1xx30 BACNET THERMOSTAT 3 RELAYS DAT STE 1402 DUCT TEMPERATURE SENSOR FST CSE 1102 AIR DIFFERENTIAL PRESSURE SWITCH 0 05 12 WC TX XEE 6311 075 TRANSFORMER 120 240 ...

Page 57: ...Operation BAC 1xx30 For common features see FlexStat All Models Common Features on page 31 For HPU applications see relevant sections in HPU Heat Pump Unit on page 41 For AHU Heating Unit and Cooling Unit applications see relevant sections in Sequence of Operation BAC 1xx36 1xxx36 on page 50 ...

Page 58: ...ing demand the FlexStat controls at 10 to meet low levels of demand In multiple compressor tandem applications the FlexStat manages the variable capacity Scroll Digital compressor as the 1st stage of cooling effectively providing 5 100 variable capacity control over the full range of cooling demand in a multiple compressor tandem ap plication BAC 1xxx53 Series 5 Relays 1 Triac 3 Analog Outputs IN9...

Page 59: ...s 9 10 15 Cooling Proportional Band 31 Cooling Unit 56 Copeland Scroll Digital Compressor 58 Custom Objects 10 Programming 8 Text in Hospitality Mode 21 Web Graphics 17 D Damper See Economizer DCV Demand Controlled Ventilation 16 35 Deadband Proportional Band 31 Dehumidification 39 41 42 44 45 52 54 Discharge Air Temp 34 Display 13 14 Door Contact with Motion Sensor 24 E Economizer 34 45 52 Emerge...

Page 60: ...rtland Energy Conservation Inc PECI 36 Priority Levels 17 Programming See Control Basic Programs Proportional See Modulating Proportional Band 31 Pull Up Resistor Switches 5 R Relays 7 Relinquished Default 19 Remote CO2 Sensor 16 Motion Sensors 25 Temperature Sensor 11 28 47 Reversing Valve 41 Reverting UI Modes 19 Roof Top Unit RTU 45 Rotation Values 14 RTD Inputs 5 S SAE 10xx CO2 sensors 16 SC S...

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