Instruction Manual for KMC CONTROLS models including: BAC-19xxxx FlexStat Touchscreen Room Sensors, Controllers, BAC-19xxxx, FlexStat Touchscreen Room Sensors, Controllers, Touchscreen Room Sensors Controllers, Room Sensors Controllers, Controllers
FlexStat: 6R3A, Temp, CO2, Humidity, Ethernet/IP, White | KMC Controls
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DocumentDocumentBAC-19xxxx FlexStat Sequence of Operation and Wiring Guide CONTENTS Introduction .........................................................1 Applications by Model ...........................................1 General Wiring Considerations................................2 DCV (Demand Control Ventilation)...........................3 Air Handling Unit (BAC-19xx36)..............................4 Inputs and Outputs List .....................................4 Wiring ............................................................5 Sequence of Operation ......................................6 (2-Pipe and 4-Pipe) Fan Coil Unit (BAC-19xx63) ........7 Inputs and Outputs List .....................................7 2-Pipe Wiring...................................................8 2-Pipe Sequence of Operation ............................9 4-Pipe Wiring................................................. 10 4-Pipe Sequence of Operation .......................... 11 (4-Pipe) Unit Ventilator (BAC-19xx36) ................... 12 Inputs and Outputs List ................................... 12 Wiring .......................................................... 13 Sequence of Operation .................................... 14 Heat Pump Unit (BAC-19xx63).............................. 15 Inputs and Outputs List ................................... 15 Wiring .......................................................... 16 Sequence of Operation .................................... 17 Roof Top Unit (BAC-19xx63)................................. 18 Inputs and Outputs List ................................... 18 Wiring .......................................................... 19 Sequence of Operation .................................... 20 Important Notices............................................... 21 Support............................................................. 21 KMCConquestTM Automation Hardware INTRODUCTION This guide describes sequences of operation and wiring for different applications of KMC Conquest BAC-19xxxx FlexStats. For general installation and configuration procedures, see the BAC-19xxxx FlexStat Installation Guide at kmccontrols.com. For configuration of settings, passwords, communication options, display customization, wiring considerations, and troubleshooting, see the BAC19xxxx FlexStat Application Guide. For specifications and accessories, see the BAC190000 Series FlexStat Data Sheet. For instructions on custom configuration and programming, see the Help system in the software tool. NOTICE OBSERVE PRECAUTIONS FOR HANDLING ELECTROSTATIC SENSITIVE DEVICES APPLICATIONS BY MODEL BAC-19xx36C models: · Air Handling Units · Unit Ventilators (4-Pipe) BAC-19xx63C models: · Fan Coil Units (2- and 4-Pipe) · Heat Pump Units · Roof Top Units KMC Controls, 19476 Industrial Drive, New Paris, IN 46553 / 877.444.5622 / Fax: 574.831.5252 / www.kmccontrols.com GENERAL WIRING CONSIDERATIONS NOTE: See the BAC-19xxxx FlexStat Application Guide for more important information about network and other wiring. CAUTION Although typical terminal code letters are shown in the illustrations in this document, check the schematics of your unit for wiring details! CAUTION The BAC-19xxxx models are NOT compatible with the backplates of older BAC10xxx/12xxxx/13xxxx/14xxxx FlexStats! If replacing an older FlexStat, replace the backplate as well. CAUTION To avoid damage from ground loops and other communication issues in networked FlexStats, correct phasing on MS/TP network and power connections on ALL the networked controllers is critically important. 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. NOTE: FlexStat relays are NO, SPST (Form "A"). (To emulate binary outputs with the analog outputs, set the output voltage to be either 0 or 12 VDC in Control Basic.) · Because of the many connections (power, network, inputs, outputs, and their respective grounds or switched commons), be sure wiring is well planned before installation of conduit! · Make sure that conduit for all wiring has adequate diameter for all necessary wiring. Using 1-inch conduit and junction boxes is recommended! Use external junction boxes above the ceiling or in another convenient location as needed to make connections that run to the FlexStat's junction box. · To prevent excessive voltage drop, use a conductor size that is adequate for the wiring length! Allow plenty of "cushion" to allow for transient peaks during startup. · Using multiple conductor wires for all inputs (e.g., 8 conductor) and outputs (e.g., 12 conductor) is recommended. Grounds for all the inputs can be combined on one wire. BAC-19xxxx FlexStat Sequence of Operation and Wiring Guide 2 AG200123C DCV (DEMAND CONTROL VENTILATION) BAC-195xxx and BAC-193xxx model FlexStats include CO2 sensors for DCV operation in (6/3) RTU, HPU, 4-pipe FCU, and (3/6) AHU applications with an outside air damper. See the illustrations and descriptions below of Basic and Standard DCV options and operation. 100% Basic DCV Mode See the BAC-19xxxx FlexStat Application Guide for more information. See also: · Air Handling Unit (BAC-19xx36) on page 4 · Heat Pump Unit (BAC-19xx63) on page 15 · (4-Pipe) Unit Ventilator (BAC-19xx36) on page 12 · Roof Top Unit (BAC-19xx63) on page 18 100% Standard DCV Mode Outside Air Damper Position Component 0% DCV Signal Component to OAD CO2 Deadband (AV58) CO2 Setpoint (AV59) Space CO2 (AV57) Outside Air Damper Position Component 0% DCV Signal Component to OAD CO2 Base (AV60) CO2 Start Point (AV61) Space CO2 (AV57) CO2 Max (Setpoint) (AV62) DEMAND CONTROL VENTILATION Description Menu Options Notes Default Value Object DCV Mode CO2 Level Select DCV Mode DCV Mode Available as a rotation value on the display. Select None, Basic, or Standard. 0 ppm AV57 None MSV12 Basic DCV Setpoint CO2 Basic In Basic DCV mode, the desired CO2 level at which point the Setpoint economizer damper opens for maximum outside air flow. 1200 ppm AV59 Basic DCV Deadband CO2 Basic Deadband In Basic DCV mode, the amount the CO2 level must drop below the setpoint before DCV control is relinquished (and outside DCV air flow returns to minimum). 200 ppm AV58 Standard DCV Baseline (Outside Air CO2 Level)* In Standard DCV mode, the presumed average CO2 concentration level of outside air at the building's location. Every week after installation, the lowest detected reading in the previous week is written into AV60 (replacing the original default or previous value). 380 ppm AV60 Standard DCV Start Point* In Standard DCV mode, the CO2 level (setpoint) at which the economizer damper begins to modulate open. It equals the DCV CO2 baseline plus 200 ppm, and the value is recalculated weekly. 580 ppm AV61 Standard DCV Maximum Allowed CO2 Level* In Standard DCV mode, the maximum allowed CO2 concentration level during an occupied period. The economizer damper modulates to fully open at this level. It equals the DCV CO2 baseline plus 600 ppm, and the value is recalculated weekly. 980 ppm AV62 *NOTE: Standard DCV values are self-calculating and are not configurable by the user in the FlexStat menu. Basic Standard BAC-19xxxx FlexStat Sequence of Operation and Wiring Guide 3 AG200123C AIR HANDLING UNIT (BAC-19XX36) Inputs and Outputs List AHU Inputs (AI1) INTERNAL Space Temperature Sensor* AI2/IN2 Remote Room Temp. Sensor AI3/IN3 Discharge Air Temperature AI4/IN4 Outside Air Temperature AI5/IN5 Analog Input #5 BI6/IN6 Fan Status BI7/IN7 Low Limit Status (AI8) INTERNAL Humidity Sensor* (BI9) INTERNAL Motion Sensor* (AI10) INTERNAL CO2 Sensor* *Internal temperature sensor is on all models. Option- al internal humidity, motion, and CO2 sensors are on applicable models. Outputs BO1/RLY1 BO2/RLY2 BO3/RLY3 AO4/OUT4 AO5/OUT5 AO6/OUT6 AO7/OUT7 AO8/OUT8 AO9/OUT9 (Modulating) Fan Start/Stop On/Off Cooling* On/Off Heating* Analog Output #4 Analog Output #5 Modulating Fan Speed Control Modulating Cooling Valve Modulating Heating Valve Economizer Output *AO7 and BO2 are controlled simultaneously. **AO8 and BO3 are controlled simultaneously. NOTE: See also DCV (Demand Control Ventilation) on page 3. NOTE: Binary Output (BO1--BO3) terminals are relays and are used with SC terminals instead of GND terminals. NOTE: Universal (analog) inputs (AIx/INx) and outputs (AOx/OUTx) are used with GND terminals. They can be configured to emulate binary (on/off or voltage/novoltage) objects. NOTE: Universal Input (INx) terminal = Analog Input (AIx) object or Binary Input (BIx). Universal Output (OUTx) terminal = Analog Output (AOx) object. Relay output (RLYx) = Binary Output (BOx) object. NOTE: Unused inputs and outputs are available for use with custom configuration and programming in KMC software. BAC-19xxxx FlexStat Sequence of Operation and Wiring Guide 4 AG200123C Air Handling Unit with Modulating Fan, Modulating and On/Off Heating and Cooling, Economizer, and Humidity, Motion and CO2 Sensors Model: BAC-19xx36C(E) If controllers are to be networked together via MS/TP, turn ON EOL switch on the controllers at both physical ends of the network. Connect shield wires together and to earth ground at only one point, but do not connect to controllers. From previous controller To next controller BLK RED SHLD BLK RED SHLD CTE-3007 Low Limit (Optional) CSE-1102 Fan Status (Optional) C NC Condensate Float Switch (Optional) STE-1451 OA Temp (Optional) STE-1451 Discharge Temp (Optional) STE-6011/13W10 Remote Temp (Optional) H Line Voltage N + B - A IN7 IN6 GND IN5 IN4 IN3 GND IN2 COM 24 VAC Connect controller to network using standard Ethernet cable. (optional) OUT9 GND 7-9 OUT8 OUT7 OUT6 GND 4-6 OUT5 OUT4 RLY3 SC 1-3 RLY2 RLY1 BAC-19XX36 Controller External connections:: RLY1 = Fan Start/Stop RLY2 = On/Off Cooling RLY3 = On/Off Heating OUT6 = Fan Speed OUT7 = Modulating Cooling OUT8 = Modulating Heating OUT9 = Economizer IN2 = Remote Sensor IN3 = Discharge Air Temperature IN4 = Outdoor Air Temperature IN5 = Condenser Overflow IN6 = Fan Status IN7 = Low Limit Status NOTES: 1. If Econ is enabled, OAT and DAT are required. 2. See www.kmccontrols.com for additional details. 24VAC Economizer (Optional) Set Failsafe direction to fail valve appropriately. ~ + Modulating Heating Valve (Optional) Set Failsafe direction to fail valve appropriately. ~ + Modulating Cooling Valve (Optional) Set Failsafe direction to fail valve appropriately. ~ + OA DMPR POS % NOTE: ENSURE WIRING TO CONTROLLER IS 24VAC ONLY! Modulating Fan Speed (Optional) ~ On/Off Cooling Valve (Optional) ~ On/Off Heating Valve (Optional) BASIC DCV OPERATION (OPTIONAL) OA DMPR 100 0 CO2 ROOM DEADBAND CO2 CO2 INCREASE SETPOINT STANDARD DCV OPERATION (OPTIONAL) OA DMPR 100 0 ROOM CO2 CO2 BASE BASE + 200 CO2 BASE + 600 CO2 INCREASE OA DMPR POS % © 2020 KMC CONTROLS, INC. Air Handling Unit with Modulating Fan, Modulating and On/Off Heating and Cooling, Economizer, and Humidity, Motion and CO2 Sensors Model: BAC-19xx36C(E) SEQUENCE OF OPERATION: 1. Occupancy: The occupancy mode follows the internal schedule. If motion (optional) is not sensed within the standby timer during occupied mode, the unit goes into standby mode until motion is sensed again. 2. On/off fan: When the fan mode is set to Auto and heating, cooling or economizer is called for, the fan starts. Once the space temp returns to setpoint, there is no call for heating, cooling nor economizer and the fan-off-delay expires (2 minutes), the fan shuts off. During the occupied and standby modes, the fan output is energized any time the fan mode is set to On. 3. Modulating fan: When the fan mode is set to Auto and either valve opens, the fan starts at minimum fan speed. Once the active valve is fully open, as the space temperature deviates further from setpoint, the fan speed increases until it reaches maximum fan speed. As the space temperature begins to return to setpoint, the fan speed modulates toward minimum fan speed. The fan runs at minimum speed until the space temp further returns to setpoint and the active valve closes. During the occupied and standby modes, the fan is energized at minimum fan speed while both valves are closed if the fan mode is set to On. The fan follows the normal sequence above once either valve opens. 4. When the fan starts, if the normally closed fan status switch (optional) doesn't open within 10 seconds, all heating, cooling and economizer outputs are deenergized. The fan output remains enabled and heating/cooling/economizer outputs remain disabled until the fan status switch opens. 5. Modulating heating: As space temp drops below the heating setpoint, the heating valve modulates open. As the space temp rises toward the heating setpoint, the heating valve modulates closed. If the fan is set to Auto, the valve is held shut until the space temp drops below the heating setpoint minus the heating span at which point the valve opens and follows the normal sequence. 6. Modulating Cooling: As space temp rises above the cooling setpoint, the cooling valve modulates open. As the space temp drops toward the cooling setpoint, the cooling valve modulates closed. While economizing, the cooling valve is held shut the first 50% of the cooling span above the cooling setpoint and then modulates open. If the fan is set to Auto, the valve is held shut until the space temp rises above the cooling setpoint plus the cooling span at which point the valve opens and follows the normal sequence. 7. On/off valves: On a call for heating or cooling , the appropriate valve opens once the space temperature is more than half the span away from the setpoint. When the space temperature is within 5% of the span of setpoint, the opened valve closes. 8. Economizer: During occupied mode, if outside air temp (OAT) drops below the economizer enable temp and there is a call for cooling, econ mode is enabled. Econ mode is disabled if OAT rises 1 deg above the econ enable temp. While economizing, the outside air damper (OAD) modulates to maintain discharge air temp (DAT). As space temp rises above the cooling setpoint, DAT setpoint resets from the space temp to the minimum DAT. While economizing, the OAD is open to the greater of the minimum damper position or DAT control. The OAD is shut during unoccupied mode and any time the fan is off. 7. If the space humidity (optional) rises above the dehumidification setpoint, the cooling valve is opened 100%. The heating valve then follows its normal operation to maintain the COOLING setpoint. Once the space humidity drops below the dehumidification setpoint minus its span, dehumidification ceases and the heating and cooling valves resume normal operation. 8. In Basic Demand Control Ventilation (DCV), the OA damper opens 100% as the CO2 level rises above the CO2 setpoint. As the CO2 level drops below the CO2 setpoint minus the CO2 deadband, the damper relinquishes to previous control. 9. In Standard DCV, the OA damper modulates from 0% open as the CO2 level rises from the CO2 base level +200 ppm to 100% open at the CO2 base level +600 ppm. 10. When both CO2 and economizer control are enabled, the damper responds to the greater of CO2 or economizer control. DAT SETPOINT ROOM TEMP MIN DAT ECONOMIZER DAT SETPOINT CLG SPAN CLG +2F SP ROOM TEMP INCREASE VALVE POS % HTG VLV 100 MODULATING VALVE OPERATION CLG VLV AUTO FAN 0 HTG SPAN -2F HTG SP AUTO FAN CLG SPAN CLG +2F SP ROOM TEMP INCREASE VALVE POS % HTG VLV 100 ON/OFF VALVE OPERATION CLG VLV 0 HTG SPAN -2F HTG SP CLG SPAN CLG +2F SP ROOM TEMP INCREASE © 2020 KMC CONTROLS, INC. BAC-19xxxx FlexStat Sequence of Operation and Wiring Guide 6 FAN SPEED VALVE POS % ON/OFF ON/OFF VALVE POS % HTG VLV 100 DEHUMIDIFICATION OPERATION CLG VLV 100 MOD 20 0 -2F HTG SPAN ROOM TEMP INCREASE CLG SP 0 DEHUM DIFF ROOM HUM INCREASE -5% DEHUM SP MAX FAN SPD 100 MOD FAN OPERATION MIN FAN SPD AUTO ON AUTO 0 HTG SPAN -2F HTG SP CLG SPAN CLG +2F SP ROOM TEMP INCREASE FAN FAN OPERATION ON AUTO AUTO AUTO ON (ECON) OFF HTG SPAN -2F HTG SP CLG SP CLG SPAN ROOM TEMP +2F INCREASE AG200123C (2-PIPE AND 4-PIPE) FAN COIL UNIT (BAC-19XX63) Inputs and Outputs List FCU (2-PIPE) Inputs (AI1) INTERNAL Space Temperature Sensor* AI2/IN2 Remote Room Temp. Sensor AI3/IN3 Discharge Air Temperature AI4/IN4 Analog Input #4 BI5/IN5 Condensate Overflow (Float Switch) BI6/IN6 Fan Status AI7/IN7 Supply Water Temperature (AI8) INTERNAL Humidity Sensor* (BI9) INTERNAL Motion Sensor* (AI10) INTERNAL CO2 Sensor* *Internal temperature sensor is on all models. Option- al internal humidity, motion, and CO2 sensors are on applicable models. Outputs BO1/RLY1 BO2/RLY2 BO3/RLY3 BO4/RLY4 BO5/RLY5 BO6/RLY6 AO7/OUT7 AO8/OUT8 AO9/OUT9 3-Speed Fan Low Speed; Mod. Fan Start 3-Speed Fan Medium Speed 3-Speed Fan High Speed On/Off Heat/Cool Valve* On/Off Auxiliary Heat** Binary Output #6 Modulating Heat/Cool Valve* Modulating Auxiliary Heat** Modulating Fan Speed Control *AO7 and BO4 are controlled simultaneously. **AO8 and BO5 are controlled simultaneously. NOTE: For unit ventilator (with outside air damper) applications, see (4-Pipe) Unit Ventilator (BAC-19xx36) on page 12. NOTE: Binary Output (BO1--BO6) terminals are relays and are used with SC terminals instead of GND terminals. NOTE: Universal (analog) inputs (AIx/INx) and outputs (AOx/OUTx) are used with GND terminals. They can be configured to emulate binary (on/off or voltage/novoltage) objects. FCU (4-PIPE) Inputs (AI1) INTERNAL Space Temperature Sensor* AI2/IN2 Remote Room Temp. Sensor AI3/IN3 Discharge Air Temperature AI4/IN4 Analog Input #4 BI5/IN5 Condensate Overflow (Float Switch) BI6/IN6 Fan Status AI7/IN7 Analog Input #7 (AI8) INTERNAL Humidity Sensor* (BI9) INTERNAL Motion Sensor* (AI10) INTERNAL CO2 Sensor* *Internal temperature sensor is on all models. Option- al internal humidity, motion, and CO2 sensors are on applicable models. Outputs BO1/RLY1 BO2/RLY2 BO3/RLY3 BO4/RLY4 BO5/RLY5 BO6/RLY6 AO7/OUT7 AO8/OUT8 AO9/OUT9 3-Speed Fan Low Speed; Mod. Fan Start 3-Speed Fan Medium Speed 3-Speed Fan High Speed On/Off Cooling Valve* On/Off Heating Valve** Binary Output #6 Modulating Heat/Cool Valve* Modulating Auxiliary Heat** Modulating Fan Speed Control *AO7 and BO4 are controlled simultaneously. **AO8 and BO5 are controlled simultaneously. NOTE: Universal Input (INx) terminal = Analog Input (AIx) object or Binary Input (BIx). Universal Output (OUTx) terminal = Analog Output (AOx) object. Relay output (RLYx) = Binary Output (BOx) object. NOTE: Unused inputs and outputs are available for use with custom configuration and programming in KMC software. BAC-19xxxx FlexStat Sequence of Operation and Wiring Guide 7 AG200123C 2-Pipe Fan Coil Unit with Modulating and 3-Speed Fan, Modulating and On/Off Valve, Modulating and On/Off Auxiliary Heat and Humidity, Motion and CO2 Sensors Model: BAC-19xx63C(E) © 2020 KMC CONTROLS, INC. If controllers are to be networked together via MS/TP, turn ON EOL switch on the controllers at both physical ends of the network. Connect shield wires together and to earth ground at only one point, but do not connect to controllers. From previous controller To next controller BLK RED SHLD BLK RED SHLD STE-1455 Water Supply Temperature Sensor CSE-1102 Fan Status (Optional) C NC Condensate Float Switch (Optional) STE-1451 Discharge Temp (Optional) STE-6011/13W10 Remote Temp (Optional) H Line N Voltage + B - A IN7 IN6 GND IN5 IN4 IN3 GND IN2 COM 24 VAC Connect controller to network using standard Ethernet cable. (optional) OUT9 GND 7-9 OUT8 OUT7 RLY6 SC 4-6 RLY5 RLY4 RLY3 SC 1-3 RLY2 RLY1 BAC-19XX63 Controller 24VAC External connections:: RLY1 = Fan Low Speed/Mod Fan Start RLY2 = Fan Medium Speed RLY3 = Fan High Speed RLY4 = On/Off Valve RLY5 = On/Off Aux Heat OUT7 = Modulating Valve OUT8 = Modulating Aux Heat OUT9 = Fan Speed IN2 = Remote Sensor IN3 = Discharge Air Temperature IN5 = Condenser Overflow IN6 = Fan Status IN7 = Water Supply Temperture Sensor NOTES: 1. Wire modulating heating/cooling, fan speed and/or on/off heating/cooling and multi-speed fan as desired. 2. See www.kmccontrols.com for additional details. Modulating Aux Heat (Optional) Set Failsafe direction to fail valve appropriately. ~ + Modulating Valve (Optional) Set Failsafe direction to fail valve appropriately. ~ + On/Off Aux Heat (Optional) ~ NOTE: ENSURE WIRING TO CONTROLLER IS 24VAC ONLY! Modulating Fan Speed (Optional) L MH NOTE: ENSURE WIRING TO CONTROLLER IS 24VAC ONLY! Three Speed Fan (Optional) On/Off Valve (Optional) ~ 2-Pipe Fan Coil Unit with Modulating and 3-Speed Fan, Modulating and On/Off Valve, Electric Reheat, and Humidity, Motion and CO2 Sensors Model: BAC-19xx63C(E) SEQUENCE OF OPERATION: 1. Occupancy: The occupancy mode follows the internal schedule. If motion (optional) is not sensed within the standby timer during occupied mode, the unit goes into standby mode until motion is sensed again. 2. 3 Speed fan: When the fan mode is set to Auto and the water valve is called for, the fan starts on low speed. As the space temperature deviates further from setpoint, the fan speed changes to medium. As the space temperature passes the active setpoint plus its span, high fan speed becomes the active speed. As the space temperature begins to return to setpoint, the active fan speed drops to medium. As the space temp further returns to setpoint, the fan speed switches to low. As the valve closes, all fan speeds are deenergized. During the occupied and standby modes, low fan speed is energized while the valve is closed if the fan mode is set to On. The fan follows the normal sequence above once the valve opens. 3. Modulating fan: When the fan mode is set to Auto and the water valve opens, the fan starts at minimum fan speed. Once the valve is fully open, as the space temperature deviates further from setpoint, the fan speed increases until it reaches maximum fan speed. As the space temperature begins to return to setpoint, the fan speed modulates toward minimum fan speed. The fan runs at minimum speed until the space temp further returns to setpoint and the valve closes. During the occupied and standby modes, the fan is energized at minimum fan speed while the valve is closed if the fan mode is set to On. The fan follows the normal sequence above once the valve opens. 4. When the fan starts at any speed, if the normally closed fan status switch (optional) doesn't open within 10 seconds, all heating and cooling outputs are deenergized. The fan output remains enabled and heating/cooling outputs remain disabled until the fan status switch opens. 5. Water evaluation mode: If the water supply temperature (WST) rises more than 10°F (AV56, adjustable) above space temp, hot water is said to be available. If the WST drops more than 10°F (AV56, adjustable) below space temp, chilled water is said to be available. As the WST comes within 8°F (AV56, adjustable, minus 2°F) of space temperature, neither hot nor chilled water are available. If the Water Type is determined to be Unconditioned , the water evaluation mode runs once every 6 hours for five minutes or until a valid water type is determined, whichever is reached first. 6. On/off valve: On a call for heating or cooling with the appropriate water present, the valve opens once the space temperature is more than half the span away from the setpoint. When the space temperature is within 5% of the span of setpoint, the valve closes. 7. Modulating valve: As space temperature deviates from setpoint with the appropriate water present, the valve modulates open until it is 100% open when the space temp is 50% of the span away from setpoint. As the temperature drops within 50% of the span of setpoint, the valve modulates closed. 8. Electric reheat: If electric reheat (optional) is present, on a call for heating with chilled water present, the reheat output behaves as if heating is called for with hot water present. With hot water present, electric reheat is locked out. VALVE POS % ELECTRIC REHEAT OPERATION REHEAT CHW AVAILABLE 100 ON/OFF MOD ON/OFF 20 0 HTG SPAN -2F HTG SP ROOM TEMP INCREASE 2-PIPE ON/OFF VALVE OPERATION HW AVAILABLE 100 CHW AVAILABLE VALVE POS % 0 HTG SPAN -2F HTG SP CLG SPAN ROOM TEMP CLG SP +2F INCREASE 2-PIPE MODULATING VALVE OPERATION HW AVAILABLE 100 CHW AVAILABLE VALVE POS % 20 0 HTG SPAN -2F HTG SP CLG SPAN ROOM TEMP CLG SP +2F INCREASE © 2020 KMC CONTROLS, INC. BAC-19xxxx FlexStat Sequence of Operation and Wiring Guide 9 2-PIPE WATER EVALUATION CHILLED -10F -8F NONE SPACE TEMP HOT +8F +10F WATER TEMP INCREASE FAN SPEED MAX FAN SPD 100 MOD FAN OPERATION MIN FAN SPD AUTO ON AUTO 0 HTG SPAN -2F HTG SP CLG SPAN ROOM TEMP CLG SP +2F INCREASE FAN SPEED HIGH 3 SPEED FAN OPERATION MED LOW OFF AUTO ON AUTO HTG SPAN -2F HTG SP CLG SP CLG SPAN ROOM TEMP +2F INCREASE AG200123C 4-Pipe Fan Coil Unit with Modulating and 3-Speed Fan, Modulating and On/Off Valves and Humidity, Motion and CO2 Sensors Model: BAC-19xx63C(E) © 2020 KMC CONTROLS, INC. If controllers are to be networked together via MS/TP, turn ON EOL switch on the controllers at both physical ends of the network. Connect shield wires together and to earth ground at only one point, but do not connect to controllers. From previous controller To next controller BLK RED SHLD BLK RED SHLD CSE-1102 Fan Status (Optional) C NC Condensate Float Switch (Optional) STE-1451 Discharge Temp (Optional) STE-6011/13W10 Remote Temp (Optional) H Line N Voltage + B - A IN7 IN6 GND IN5 IN4 IN3 GND IN2 COM 24 VAC Connect controller to network using standard Ethernet cable. (optional) OUT9 GND 7-9 OUT8 OUT7 RLY6 SC 4-6 RLY5 RLY4 RLY3 SC 1-3 RLY2 RLY1 BAC-19XX63 Controller 24VAC External connections:: RLY1 = Fan Low Speed RLY2 = Fan Medium Speed RLY3 = Fan High Speed RLY4 = On/Off Cooling RLY5 = On/Off Heating OUT7 = Modulating Cooling OUT8 = Modulating Heating OUT9 = Fan Speed IN2 = Remote Sensor IN3 = Discharge Air Temperature IN5 = Condenser Overflow IN6 = Fan Status NOTES: 1. Wire modulating heating/cooling, fan speed and/or on/off heating/cooling and multi-speed fan as desired. 2. See www.kmccontrols.com for additional details. Modulating Heating Valve (Optional) Set Failsafe direction to fail valve appropriately. ~ + Modulating Cooling Valve (Optional) Set Failsafe direction to fail valve appropriately. ~ + On/Off Heating Valve (Optional) ~ On/Off Cooling Valve (Optional) ~ NOTE: ENSURE WIRING TO CONTROLLER IS 24VAC ONLY! Modulating Fan Speed (Optional) L MH NOTE: ENSURE WIRING TO CONTROLLER IS 24VAC ONLY! Three Speed Fan (Optional) 4-Pipe Fan Coil Unit with Modulating and 3-Speed Fan, Modulating and On/Off Valves and Humidity, Motion and CO2 Sensors Model: BAC-19xx63C(E) SEQUENCE OF OPERATION: 1. Occupancy: The occupancy mode follows the internal schedule. If motion (optional) is not sensed within the standby timer during occupied mode, the unit goes into standby mode until motion is sensed again. 2. 3 Speed fan: When the fan mode is set to Auto and either valve is called for, the fan starts on low speed. As the space temperature deviates further from setpoint, the fan speed changes to medium. As the space temperature passes the active setpoint plus/minus its span, high fan speed becomes the active speed. As the space temperature begins to return to setpoint, the active fan speed drops to medium. As the space temp further returns to setpoint, the fan speed switches to low. As the active valve closes, all fan speeds are deenergized. During the occupied and standby modes, low fan speed is energized while both valves are closed if the fan mode is set to On. The fan follows the normal sequence above once either valve opens. 3. Modulating fan: When the fan mode is set to Auto and either valve opens, the fan starts at minimum fan speed. Once the active valve is fully open, as the space temperature deviates further from setpoint, the fan speed increases until it reaches maximum fan speed. As the space temperature begins to return to setpoint, the fan speed modulates toward minimum fan speed. The fan runs at minimum speed until the space temp further returns to setpoint and the active valve closes. During the occupied and standby modes, the fan is energized at minimum fan speed while both valves are closed if the fan mode is set to On. The fan follows the normal sequence above once either valve opens. 4. When the fan starts at any speed, if the normally closed fan status switch (optional) doesn't open within 10 seconds, all heating and cooling outputs are deenergized. The fan output remains enabled and heating/cooling outputs remain disabled until the fan status switch opens. 5. On/off valves: On a call for heating or cooling , the appropriate valve opens once the space temperature is more than half the span away from the setpoint. When the space temperature is within 5% of the span of setpoint, the opened valve closes. 6. Modulating valves: As space temperature deviates from setpoint, the appropriate heating or cooling valve modulates open until it is 100% open when the space temp is 50% of the span away from setpoint. As the temperature drops within 50% of the span of setpoint, the heating or cooling valve modulates to closed. 7. If the space humidity (optional) rises above the dehumidification setpoint, the cooling valve is opened 100%. The heating valve then follows its normal operation to maintain the COOLING setpoint. Once the space humidity drops below the dehumidification setpoint minus its span, dehumidification ceases and the heating and cooling valves resume normal operation. VALVE POS % ON/OFF ON/OFF VALVE POS % HTG VLV 100 DEHUMIDIFICATION OPERATION CLG VLV 100 MOD 20 0 -2F HTG SPAN ROOM TEMP INCREASE CLG SP 0 DEHUM DIFF ROOM HUM INCREASE -5% DEHUM SP HTG VLV 100 ON/OFF VALVE OPERATION CLG VLV VALVE POS % 0 HTG SPAN -2F HTG SP CLG SPAN ROOM TEMP CLG SP +2F INCREASE HTG VLV 100 MODULATING VALVE OPERATION CLG VLV VALVE POS % 20 0 HTG SPAN -2F HTG SP CLG SPAN ROOM TEMP CLG +2F INCREASE SP © 2020 KMC CONTROLS, INC. BAC-19xxxx FlexStat Sequence of Operation and Wiring Guide 11 FAN SPEED MAX FAN SPD 100 MOD FAN OPERATION MIN FAN SPD AUTO ON AUTO 0 HTG SPAN -2F HTG SP CLG SPAN ROOM TEMP CLG SP +2F INCREASE FAN SPEED HIGH 3 SPEED FAN OPERATION MED LOW OFF AUTO ON AUTO HTG SPAN -2F HTG SP CLG SP CLG SPAN ROOM TEMP +2F INCREASE AG200123C (4-PIPE) UNIT VENTILATOR (BAC-19XX36) Inputs and Outputs List (4-PIPE) UNIT VENTILATOR Inputs (AI1) AI2/IN2 AI3/IN3 AI4/IN4 BI5/IN5 BI6/IN6 BI7/IN7 INTERNAL Space Temperature Sensor* Remote Room Temp. Sensor Discharge Air Temperature Outside Air Temperature Condensate Overflow (Float Switch) Fan Status Low Limit Status (AI8) INTERNAL Humidity Sensor* (BI9) INTERNAL Motion Sensor* (AI10) INTERNAL CO2 Sensor* *Internal temperature sensor is on all models. Option- al internal humidity, motion, and CO2 sensors are on applicable models. Outputs BO1/RLY1 BO2/RLY2 BO3/RLY3 AO4/OUT4 AO5/OUT5 AO6/OUT6 AO7/OUT7 AO8/OUT8 AO9/OUT9 3-Speed Fan Low Speed; Mod. Fan Start 3-Speed Fan Medium Speed 3-Speed Fan High Speed Analog Output #4 Analog Output #5 Modulating Fan Speed Control Modulating Cooling Valve Modulating Heating Valve Outdoor Air Damper NOTE: For Fan Coil Unit applications (no outside air damper), see (2-Pipe and 4-Pipe) Fan Coil Unit (BAC-19xx63) on page 7. NOTE: See also DCV (Demand Control Ventilation) on page 3. NOTE: Binary Output (BO1--BO3) terminals are relays and are used with SC terminals instead of GND terminals. NOTE: Universal (analog) inputs (AIx/INx) and outputs (AOx/OUTx) are used with GND terminals. They can be configured to emulate binary (on/off or voltage/novoltage) objects. NOTE: Universal Input (INx) terminal = Analog Input (AIx) object or Binary Input (BIx). Universal Output (OUTx) terminal = Analog Output (AOx) object. Relay output (RLYx) = Binary Output (BOx) object. NOTE: Unused inputs and outputs are available for use with custom configuration and programming in KMC software. BAC-19xxxx FlexStat Sequence of Operation and Wiring Guide 12 AG200123C 4-Pipe Unit Ventilator with Modulating and 3-Speed Fan, Modulating Valves, Outside Air Damper and Humidity, Motion and CO2 Sensors Model: BAC-19xx36C(E) If controllers are to be networked together via MS/TP, turn ON EOL switch on the controllers at both physical ends of the network. Connect shield wires together and to earth ground at only one point, but do not connect to controllers. From previous controller To next controller BLK RED SHLD BLK RED SHLD CTE-3007 Low Limit (Optional) CSE-1102 Fan Status (Optional) C NC Condensate Float Switch (Optional) STE-1451 OA Temp (Optional) STE-1451 Discharge Temp (Optional) STE-6011/13W10 Remote Temp (Optional) H Line N Voltage + B - A IN7 IN6 GND IN5 IN4 IN3 GND IN2 COM 24 VAC Connect controller to network using standard Ethernet cable. (optional) OUT9 GND 7-9 OUT8 OUT7 OUT6 GND 4-6 OUT5 OUT4 RLY3 SC 1-3 RLY2 RLY1 BAC-19XX36 Controller External connections:: RLY1 = Fan Low Speed RLY2 = Fan Medium Speed RLY3 = Fan High Speed OUT6 = Fan Speed OUT7 = Modulating Cooling OUT8 = Modulating Heating OUT9 = Outdoor Air Damper IN2 = Remote Sensor IN3 = Discharge Air Temperature IN4 = Outdoor Air Temperature IN5 = Condenser Overflow IN6 = Fan Status IN7 = Low Limit Status NOTES: 1. Wire modulating fan speed or multi-speed fan as desired. 2. See www.kmccontrols.com for additional details. 24VAC Economizer (Optional) Set Failsafe direction to fail valve appropriately. ~ + Modulating Heating Valve (Optional) Set Failsafe direction to fail valve appropriately. ~ + Modulating Cooling Valve (Optional) Set Failsafe direction to fail valve appropriately. ~ + OA DMPR POS % NOTE: ENSURE WIRING TO CONTROLLER IS 24VAC ONLY! Modulating Fan Speed (Optional) L MH NOTE: ENSURE WIRING TO CONTROLLER IS 24VAC ONLY! Three Speed Fan (Optional) BASIC DCV OPERATION OA DMPR 100 0 CO2 ROOM DEADBAND CO2 CO2 INCREASE SETPOINT STANDARD DCV OPERATION OA DMPR 100 0 ROOM CO2 CO2 BASE BASE + 200 CO2 BASE + 600 CO2 INCREASE OA DMPR POS % 4-Pipe Unit Ventilator with Modulating and 3-Speed Fan, Modulating Valves, Outside Air Damper and Humidity, Motion and CO2 Sensors Model: BAC-19xx36C(E) SEQUENCE OF OPERATION: 1. Occupancy: The occupancy mode follows the internal schedule. If motion (optional) is not sensed within the standby timer during occupied mode, the unit goes into standby mode until motion is sensed again. 2. 3 Speed fan: When the fan mode is set to Auto and either valve or economizer is called for, the fan starts on low speed. As the space temperature deviates further from setpoint, the fan speed changes to medium. As the space temperature passes the active setpoint plus/minus its span, high fan speed becomes the active speed. As the space temperature begins to return to setpoint, the active fan speed drops to medium. As the space temp further returns to setpoint, the fan speed switches to low. As the active valve closes and there is no call for economizer, all fan speeds are deenergized. During the occupied and standby modes, low fan speed is energized while both valves are closed if the fan mode is set to On. The fan follows the normal sequence above once either valve opens. 3. Modulating fan: When the fan mode is set to Auto and either valve opens or there is a call for economizer, the fan starts at minimum fan speed. Once the active valve or economizer is fully open, as the space temperature deviates further from setpoint, the fan speed increases until it reaches maximum fan speed. As the space temperature begins to return to setpoint, the fan speed modulates toward minimum fan speed. The fan runs at minimum speed until the space temp further returns to setpoint and the active valve or economizer closes. During the occupied and standby modes, the fan is energized at minimum fan speed while both valves and economizer are closed if the fan mode is set to On. The fan follows the normal sequence above once either valve or the economizer opens. 4. When the fan starts at any speed, if the normally closed fan status switch (optional) doesn't open within 10 seconds, all heating and cooling outputs are deenergized. The fan output remains enabled and heating/cooling outputs remain disabled until the fan status switch opens. 5. Modulating valves: As space temperature deviates from setpoint, the appropriate heating or cooling valve modulates open until it is 100% open when the space temp is 50% of the span away from setpoint. As the temperature drops within 50% of the span of setpoint, the heating or cooling valve modulates to closed. 8. Economizer: During occupied mode, if outside air temp (OAT) drops below the economizer enable temp and there is a call for cooling, econ mode is enabled. Econ mode is disabled if OAT rises 1 deg above the econ enable temp. While economizing, the outside air damper (OAD) modulates to maintain discharge air temp (DAT). As space temp rises above the cooling setpoint, DAT setpoint resets from the space temp to the minimum DAT. While economizing, the OAD is open to the greater of the minimum damper position or DAT control. The OAD is shut during unoccupied mode and any time the fan is off. 9. If the space humidity (optional) rises above the dehumidification setpoint, the cooling valve is opened 100%. The heating valve then follows its normal operation to maintain the COOLING setpoint. Once the space humidity drops below the dehumidification setpoint minus its span, dehumidification ceases and the heating and cooling valves resume normal operation. 10. In Basic Demand Control Ventilation (DCV), the OA damper opens 100% as the CO2 level rises above the CO2 setpoint. As the CO2 level drops below the CO2 setpoint minus the CO2 deadband, the damper relinquishes to previous control. 11. In Standard DCV, the OA damper modulates from 0% open as the CO2 level rises from the CO2 base level +200 ppm to 100% open at the CO2 base level +600 ppm. 13. When both CO2 and economizer control are enabled, the damper responds to the greater of CO2 or economizer control. VALVE POS % ON/OFF ON/OFF VALVE POS % HTG VLV 100 DEHUMIDIFICATION OPERATION CLG VLV 100 MOD 20 0 -2F HTG SPAN ROOM TEMP INCREASE CLG SP 0 DEHUM DIFF ROOM HUM INCREASE -5% DEHUM SP HTG VLV 100 ON/OFF VALVE OPERATION CLG VLV VALVE POS % 0 HTG SPAN -2F HTG SP CLG SPAN CLG +2F SP ROOM TEMP INCREASE HTG VLV 100 MODULATING VALVE OPERATION CLG VLV VALVE POS % 20 0 HTG SPAN -2F HTG SP CLG SPAN CLG +2F SP ROOM TEMP INCREASE BAC-19xxxx FlexStat Sequence of Operation and Wiring Guide DAT SETPOINT ROOM TEMP MIN DAT ECONOMIZER DAT SETPOINT CLG SPAN CLG +2F SP ROOM TEMP INCREASE FAN SPEED 14 MAX FAN SPD 100 MOD FAN OPERATION MIN FAN SPD AUTO ON AUTO 0 HTG SPAN -2F HTG SP CLG SPAN CLG +2F SP ROOM TEMP INCREASE FAN SPEED HIGH 3 SPEED FAN OPERATION MED LOW OFF AUTO ON AUTO HTG SPAN -2F HTG SP CLG SP CLG SPAN ROOM TEMP +2F INCREASE AG200123C HEAT PUMP UNIT (BAC-19XX63) Inputs and Outputs List HPU Inputs (AI1) AI2/IN2 AI3/IN3 AI4/IN4 BI5/IN5 BI6/IN6 AI7/IN7 INTERNAL Space Temperature Sensor* Remote Room Temp. Sensor Discharge Air Temperature Outside Air Temperature Fan Status Analog Input #7 (AI8) INTERNAL Humidity Sensor* (BI9) INTERNAL Motion Sensor* (AI10) INTERNAL CO2 Sensor* *Internal temperature sensor is on all models. Option- al internal humidity, motion, and CO2 sensors are on applicable models. Outputs BO1/RLY1 BO2/RLY2 BO3/RLY3 BO4/RLY4 BO5/RLY5 BO6/RLY6 AO7/OUT7 AO8/OUT8 AO9/OUT9 Fan Start - Stop Stage 1 Compressor Stage 2 Compressor Reversing Valve Auxiliary Heat Binary Output #6 Analog Output #7 Analog Output #8 Economizer Output NOTE: Binary Output (BO1--BO6) terminals are relays and are used with SC terminals instead of GND terminals. NOTE: Universal (analog) inputs (AIx/INx) and outputs (AOx/OUTx) are used with GND terminals. They can be configured to emulate binary (on/off or voltage/novoltage) objects. NOTE: Universal Input (INx) terminal = Analog Input (AIx) object or Binary Input (BIx). Universal Output (OUTx) terminal = Analog Output (AOx) object. Relay output (RLYx) = Binary Output (BOx) object. NOTE: Unused inputs and outputs are available for use with custom configuration and programming in KMC software. BAC-19xxxx FlexStat Sequence of Operation and Wiring Guide 15 AG200123C Heat Pump Unit with Auxiliary Heat, Economizer, and Humidity, Motion and CO2 Sensors Model: BAC-19xx63C(E) If controllers are to be networked together via MS/TP, turn ON EOL switch on the controllers at both physical ends of the network. Connect shield wires together and to earth ground at only one point, but do not connect to controllers. From previous controller To next controller BLK RED SHLD BLK RED SHLD CSE-1102 Fan Status (Optional) C NC STE-1451 OA Temp (Optional) STE-1451 Discharge Temp (Optional) STE-6011/13W10 Remote Temp (Optional) H Line N Voltage + B - A IN7 IN6 GND IN5 IN4 IN3 GND IN2 COM 24 VAC Connect controller to network using standard Ethernet cable. (optional) OUT9 GND 7-9 OUT8 OUT7 RLY6 SC 4-6 RLY5 RLY4 RLY3 SC 1-3 RLY2 RLY1 BAC-19XX63 Controller External connections:: RLY1 = Fan Start/Stop RLY2 = Compressor Stage 1 SC1-3 = Unit 24VAC RLY3 = Compressor Stage 2 RLY4 = Reversing Valve RLY5 = Auxiliary Heat SC4-6 = Unit 24VAC OUT9= Economizer IN2 = Remote Sensor IN3 = Discharge Air Temperature IN4 = Outdoor Air Temperature IN6 = Fan Status NOTES: 1. If Econ is enabled, OAT and DAT are required. 2. See www.kmccontrols.com for additional details. 24VAC Economizer (Optional) Set Failsafe direction to fail valve appropriately. ~ + OA DMPR POS % NOTE: ENSURE WIRING TO CONTROLLER IS 24VAC ONLY! Heatpump Control Wiring BASIC DCV OPERATION (OPTIONAL) OA DMPR 100 0 CO2 ROOM DEADBAND CO2 CO2 INCREASE SETPOINT STANDARD DCV OPERATION (OPTIONAL) OA DMPR 100 0 ROOM CO2 CO2 BASE BASE + 200 CO2 BASE + 600 CO2 INCREASE OA DMPR POS % © 2020 KMC CONTROLS, INC. Heat Pump Unit with Auxiliary Heat, Economizer, and Humidity, Motion and CO2 Sensors Model: BAC-19xx63C(E) SEQUENCE OF OPERATION: 1. Occupancy: The occupancy mode follows the internal schedule. If motion (optional) is not sensed within the standby timer during occupied mode, the unit goes into standby mode until motion is sensed again. 2. On/off fan: When the fan mode is set to Auto and heating (any form), cooling or economizer is called for, the fan starts. Once the space temp returns to setpoint, there is no call for any heating, cooling nor economizer and the fan-off-delay expires (2 minutes), the fan shuts off. During the occupied and standby modes, the fan output is energized any time the fan mode is set to On. 3. When the fan starts, if the normally closed fan status switch (optional) doesn't open within 10 seconds, all heating, cooling and economizer outputs are deenergized. The fan output remains enabled and heating/cooling/economizer outputs remain disabled until the fan status switch opens. 4. Reversing valve: The reversing valve output is energized on a call for cooling (adjustable). 6. Cooling: As space temp rises above the cooling setpoint plus the cooling span, compressor 1 is energized if the minimum off time has been met. If the space temp remains above the cooling setpoint plus the cooling span for the stage delay, compressor 2 is energized after ensuring its minimum off time. As the space temp drops below half of the cooling span above the cooling setpoint, compressor 2 is deenergized. As the space temp drops below the cooling setpoint, compressor 1 is deenergized. 7. Compressor heating: As space temp drops below the heating setpoint minus the heating span, compressor 1 is energized if the minimum off time has been met. If the space temp remains below the heating setpoint minus the heating span for the stage delay, compressor 2 is energized after ensuring its minimum off time. As the space temp rises above half of the heating span below heating setpoint, compressor 2 is deenergized. As the space temp rises above the heating setpoint, compressor 1 is deenergized. 8. Auxiliary heat/third stage: When auxiliary heat is configured for Third Stage, the unit is in heating mode and compressor 2 has been on for the stage delay, the aux heat output is energized. As the space temp rises above 65% of the heating span below heating setpoint, aux heat is deenergized. 9. Auxiliary heat/compressor lockout: When auxiliary heat is configured for Comp Lockout, both compressors are locked out and the auxiliary heat output follows the compressor 1 heating sequence. 10. Emergency heat: When the system mode is manually set to Emergency Heat, all outputs besides fan are locked out and aux heat is energized as space temp drops below heating setpoint minus heating span. As the space temp rises above the heating setpoint, the aux heat output is deenergized. 11. Economizer: During occupied mode, if outside air temp (OAT) drops below the economizer enable temp and there is a call for cooling, econ mode is enabled. Econ mode is disabled if OAT rises 1 deg above the econ enable temp. While economizing, the outside air damper (OAD) modulates to maintain discharge air temp (DAT). As space temp rises above the cooling setpoint, DAT setpoint resets from the space temp to the minimum DAT. While economizing, the OAD is open to the greater of the minimum damper position or DAT control. The OAD is shut during unoccupied mode and any time the fan is off. 12. If the space humidity (optional) rises above the dehumidification setpoint, compressor 1 is energized if the minimum off time has been met. If the humidity remains high for the stage delay and compressor 2's minimum off time has been met, compressor 2 is energized. Auxiliary heat is then cycled to maintain the COOLING setpoint. Once the space humidity drops below the dehumidification setpoint minus its span, dehumidification ceases and the compressors resume normal space temp control. 13. In Basic Demand Control Ventilation (DCV), the OA damper opens 100% as the CO2 level rises above the CO2 setpoint. As the CO2 level drops below the CO2 setpoint minus the CO2 deadband, the damper relinquishes to previous control. 14. In Standard DCV, the OA damper modulates from 0% open as the CO2 level rises from the CO2 base level +200 ppm to 100% open at the CO2 base level +600 ppm. 15. When both CO2 and economizer control are enabled, the damper responds to the greater of CO2 or economizer control. COOLING STAGES OPERATION COMP 2 COMP 1/ REV VALVE CLG SP 1.0F COMP 1/ REV VALVE COMP 2 (STAGE DELAY) 2.0F ROOM TEMP INCREASE COMPRESSOR HEATING/AUX HEAT-3RD STAGE OPERATION COMP 1 COMP 2 (STAGE DELAY) AUX HT3RD STAGE (STAGE DELAY) 2.0F COMP 2 AUX HT3RD STAGE COMP 1 1.0F HTG SP ROOM TEMP INCREASE AUX HEAT-COMPRESSOR LOCKOUT/ EMERGENCY HEAT OPERATION/ AUX HEAT 2.0F 1.0F © 2020 KMC CONTROLS, INC. AUX HEAT HTG SP (NOTE: COMPRESSORS ARE LOCKED OUT) ROOM TEMP INCREASE BAC-19xxxx FlexStat Sequence of Operation and Wiring Guide DAT SETPOINT 17 ROOM TEMP MIN DAT ECONOMIZER DAT SETPOINT CLG SPAN CLG +2F SP DEHUMIDIFICATION OPERATION ROOM TEMP INCREASE AUX HEAT AUX HEAT HTG SPAN ROOM TEMP INCREASE -2F CLG SP COMP 1 COMP 2 REV VALVE COMP 1/ REV VALVE COMP 2 (STAGE DELAY) DEHUM DIFF -5% DEHUM SP ROOM HUM INCREASE FAN FAN OPERATION ON AUTO AUTO AUTO ON (ECON) OFF HTG SPAN -2F HTG SP CLG SP CLG SPAN ROOM TEMP +2F INCREASE AG200123C ROOF TOP UNIT (BAC-19XX63) Inputs and Outputs List RTU Inputs (AI1) AI2/IN2 AI3/IN3 AI4/IN4 AI5/IN5 BI6/IN6 AI7/IN7 INTERNAL Space Temperature Sensor* Remote Room Temp. Sensor Discharge Air Temperature Outside Air Temperature Analog Input #5 Fan Status Analog Input #7 (AI8) INTERNAL Humidity Sensor* (BI9) INTERNAL Motion Sensor* (AI10) INTERNAL CO2 Sensor* *Internal temperature sensor is on all models. Option- al internal humidity, motion, and CO2 sensors are on applicable models. Outputs BO1/RLY1 BO2/RLY2 BO3/RLY3 BO4/RLY4 BO5/RLY5 BO6/RLY6 AO7/OUT7 AO8/OUT8 AO9/OUT9 Fan Start - Stop Stage 1 Cooling* Stage 2 Cooling Binary Output #4 Stage 1 Heating* Stage 2 Heating Analog Cooling Output* Analog Heating Output* Economizer Output *AO7 and BO2 are controlled simultaneously. **AO8 and BO5 are controlled simultaneously. NOTE: See also DCV (Demand Control Ventilation) on page 3. NOTE: Binary Output (BO1--BO6) terminals are relays and are used with SC terminals instead of GND terminals. NOTE: Universal (analog) inputs (AIx/INx) and outputs (AOx/OUTx) are used with GND terminals. They can be configured to emulate binary (on/off or voltage/novoltage) objects. NOTE: Universal Input (INx) terminal = Analog Input (AIx) object or Binary Input (BIx). Universal Output (OUTx) terminal = Analog Output (AOx) object. Relay output (RLYx) = Binary Output (BOx) object. NOTE: Unused inputs and outputs are available for use with custom configuration and programming in KMC software. BAC-19xxxx FlexStat Sequence of Operation and Wiring Guide 18 AG200123C Roof Top Unit with On/Off Fan, Modulating and 2-Stage Heating and Cooling, Economizer, and Humidity, Motion and CO2 Sensors Model: BAC-19xx63C(E) If controllers are to be networked together via MS/TP, turn ON EOL switch on the controllers at both physical ends of the network. Connect shield wires together and to earth ground at only one point, but do not connect to controllers. From previous controller To next controller BLK RED SHLD BLK RED SHLD CSE-1102 Fan Status (Optional) C NC STE-1451 OA Temp (Optional) STE-1451 Discharge Temp (Optional) STE-6011/13W10 Remote Temp (Optional) H Line N Voltage + B - A IN7 IN6 GND IN5 IN4 IN3 GND IN2 COM 24 VAC Connect controller to network using standard Ethernet cable. (optional) OUT9 GND 7-9 OUT8 OUT7 RLY6 SC 4-6 RLY5 RLY4 RLY3 SC 1-3 RLY2 RLY1 BAC-19XX63 Controller External connections:: RLY1 = Fan Start/Stop RLY2 = Cooling Stage 1 SC1-3 = RC RLY3 = Cooling Stage 2 RLY5 = Heating Stage 1 SC4-6 = RH RLY6 = Heating Stage 2 OUT7 = Modulating Cooling OUT8 = Modulating Heating OUT9 = Economizer IN2 = Remote Sensor IN3 = Discharge Air Temperature IN4 = Outdoor Air Temperature IN6 = Fan Status NOTES: 1. If Econ is enabled, OAT and DAT are required. 2. See www.kmccontrols.com for additional details. 24VAC Economizer (Optional) Set Failsafe direction to fail valve appropriately. ~ + Modulating Heating Valve (Optional) Set Failsafe direction to fail valve appropriately. ~ + Modulating Cooling Valve (Optional) Set Failsafe direction to fail valve appropriately. ~ + OA DMPR POS % NOTE: ENSURE WIRING TO CONTROLLER IS 24VAC ONLY! Fan Start/Stop On/Off Cooling Stages (Optional) On/Off Heating Stages (Optional) NOTE: If there is only one "R" terminal in the hvac unit, place a jumper between the cooling and heating "SC" terminals on the BAC-19xx63 and wire to the hvac "R" terminal. BASIC DCV OPERATION (OPTIONAL) OA DMPR 100 0 CO2 ROOM DEADBAND CO2 CO2 INCREASE SETPOINT STANDARD DCV OPERATION (OPTIONAL) OA DMPR 100 0 ROOM CO2 CO2 BASE BASE + 200 CO2 BASE + 600 CO2 INCREASE OA DMPR POS % © 2020 KMC CONTROLS, INC. Roof Top Unit with On/Off Fan, Modulating and 2-Stage Heating and Cooling, Economizer, and Humidity, Motion and CO2 Sensors Model: BAC-19xx63C(E) SEQUENCE OF OPERATION: 1. Occupancy: The occupancy mode follows the internal schedule. If motion (optional) is not sensed within the standby timer during occupied mode, the unit goes into standby mode until motion is sensed again. 2. On/off fan: When the fan mode is set to Auto and heating, cooling or economizer is called for, the fan starts. Once the space temp returns to setpoint, there is no call for heating, cooling nor economizer and the fan-off-delay expires (2 minutes), the fan shuts off. During the occupied and standby modes, the fan output is energized any time the fan mode is set to On. 3. When the fan starts, if the normally closed fan status switch (optional) doesn't open within 10 seconds, all heating, cooling and economizer outputs are deenergized. The fan output remains enabled and heating/cooling/economizer outputs remain disabled until the fan status switch opens. 4. Modulating heating: As space temp drops below the heating setpoint, the heating valve modulates open. As the space temp rises toward the heating setpoint, the heating valve modulates closed. If the fan is set to Auto, the valve is held shut until the space temp drops below the heating setpoint minus the heating span at which point the valve opens and follows the normal sequence. 5. Modulating Cooling: As space temp rises above the cooling setpoint, the cooling valve modulates open. As the space temp drops toward the cooling setpoint, the cooling valve modulates closed. While economizing, the cooling valve is held shut the first 50% of the cooling span above the cooling setpoint and then modulates open. If the fan is set to Auto, the valve is held shut until the space temp rises above the cooling setpoint plus the cooling span at which point the valve opens and follows the normal sequence. 6. Staged heating: As space temp drops below the heating setpoint minus the heating span, heating stage 1 is energized. If the space temp remains below the heating setpoint minus the heating span for the stage delay, heating stage 2 is energized. As the space temp rises above half of the heating span below heating setpoint, stage 2 heating is deenergized. As the space temp rises above the heating setpoint, heating stage 1 is deenergized. 7. Staged cooling: As space temp rises above the cooling setpoint plus the cooling span, cooling stage 1 is energized if the minimum off time has been met. If the space temp remains above the cooling setpoint plus the cooling span for the stage delay, cooling stage 2 is energized after VALVE POS % HTG VLV 100 MODULATING VALVE OPERATION CLG VLV AUTO FAN 0 HTG SPAN -2F HTG SP AUTO FAN CLG SPAN ROOM TEMP CLG SP +2F INCREASE HEATING STAGES OPERATION STAGE 1 STAGE 2 (STAGE DELAY) 2.0F STAGE 2 1.0F STAGE 1 HTG SP ROOM TEMP INCREASE COOLING STAGES OPERATION ensuring its minimum off time. As the space temp drops below half of the cooling span above cooling setpoint, stage 2 cooling is deenergized. As the space temp drops below the cooling setpoint, cooling stage 1 is deenergized. 8. Economizer: During occupied mode, if outside air temp (OAT) drops below the economizer enable temp and there is a call for cooling, econ mode is enabled. Econ mode is disabled if OAT rises 1 deg above the econ enable temp. While economizing, the outside air damper (OAD) modulates to maintain discharge air temp (DAT). As space temp rises above the cooling setpoint, DAT setpoint resets from the space temp to the minimum DAT. While economizing, the OAD is open to the greater of the minimum damper position or DAT control. The OAD is shut during unoccupied mode and any time the fan is off. 9. If the space humidity (optional) rises above the dehumidification setpoint, the cooling valve is opened 100%. Cooling stage 1 is energized if the minimum off time has been met. If the humidity remains high for the stage delay and cooling stage 2's minimum off time has been met, cooling stage 2 is energized. The heating valve and staging then follows their normal operation to maintain the COOLING setpoint. Once the space humidity drops below the dehumidification setpoint minus its span, dehumidification ceases and the heating and cooling valves and staging resume normal operation. 10. In Basic Demand Control Ventilation (DCV), the OA damper opens 100% as the CO2 level rises above the CO2 setpoint. As the CO2 level drops below the CO2 setpoint minus the CO2 deadband, the damper relinquishes to previous control. 11. In Standard DCV, the OA damper modulates from 0% open as the CO2 level rises from the CO2 base level +200 ppm to 100% open at the CO2 base level +600 ppm. 12. When both CO2 and economizer control are enabled, the damper responds to the greater of CO2 or economizer control. DAT SETPOINT ROOM TEMP MIN DAT ECONOMIZER DAT SETPOINT CLG SPAN CLG +2F SP MOD DEHUMIDIFICATION OPERATION ROOM TEMP INCREASE VALVE POS % VALVE POS % HTG VLV 100 CLG VLV 100 AUTO FAN 0 HTG SPAN -2F ROOM TEMP INCREASE CLG SP 0 DEHUM DIFF -5% DEHUM SP ROOM HUM INCREASE 2 STAGE DEHUMIDIFICATION OPERATION STAGE 2 STAGE 1 STAGE 2 (STAGE DELAY) STAGE 1 HTG SPAN ROOM TEMP INCREASE -2F CLG SP STAGE 1 STAGE 2 STAGE 1 STAGE 2 (STAGE DELAY) DEHUM DIFF -5% DEHUM SP ROOM HUM INCREASE FAN STAGE 2 STAGE 1 © 2020 CLG SP 1.0F KMC CONTROLS, INC. STAGE 1 STAGE 2 (STAGE DELAY) 2.0F ROOM TEMP INCREASE FAN OPERATION ON AUTO AUTO AUTO ON (ECON) OFF HTG SPAN -2F HTG SP CLG SP CLG SPAN ROOM TEMP +2F INCREASE BAC-19xxxx FlexStat Sequence of Operation and Wiring Guide 20 AG200123C IMPORTANT NOTICES NOTE: This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. A BAC-19xxxx Class A digital apparatus complies with Canadian ICES-003. KMC Controls® and KMC Commander® are all registered trademarks of KMC Controls. FlexStatTM, KMC ConquestTM, KMC ConnectTM, KMC ConvergeTM, and TotalControlTM are all trademarks of KMC Controls. All other products or name brands mentioned are trademarks of their respective companies or organizations. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form by any means without the written permission of KMC Controls, Inc. The material in this document is for information purposes only. The contents and the product it describes are subject to change without notice. KMC Controls, Inc. makes no representations or warranties with respect to this document. In no event shall KMC Controls, Inc. be liable for any damages, direct or incidental, arising out of or related to the use of this document. Specifications and design are subject to change without notice. SUPPORT Additional KMC product information and resources are available on the web at www.kmccontrols. com. Log in to see all available files. ©BA2C0-2129xKxMxxCFCleoxnStrtoatlsS, eInqcu.ence of Operation and SWpiericnigficGautidoens and design sub2j1ect to change without notice AG200123C
KMC Controls | Building Automation and Control Solutions
KMC Controls | Building Automation and Control Solutions