DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit

Metasys Network Technical Manual 636 DX-9100/9120 Applications Section Application Note Issue Date 0497 APPLICATION NOTE DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit Introduction Page 3 Application Description 3 Sequence of Operation *3 Design Considerations *5 Application Details 9 Main Function 9 Location *9 Graphic Representation 9 Point List 10 GX-9100 Printouts 11 Variations 18 * Indicates those sections where changes have occurred since the last printing. 1997 Johnson Controls, Inc. 1 Code No. LIT-63633523

2 DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit

Introduction Application Description Sequence of Operation This application is for warehouse smoke exhaust and reset logic for a rooftop unit. During a fire alarm, the process described in this document controls a rooftop unit to minimize the spread of smoke. After the fire alarm is cleared, you must reset the process to monitor for subsequent alarms. Notes: Smoke control applications, such as this, issue commands to controlled devices that pressurize or exhaust an area of a building. This application note presents only an example of a smoke control strategy. Realize that since every building is unique, the details of applying the strategy will vary. This application note, then, is offered to assist you in developing an application that will be appropriate for your project. When an automatic detector in the warehouse indicates an alarm, the process is triggered. This process turns off the supply fan, turns on the exhaust fan, opens the modulated exhaust dampers, closes the return air dampers, closes the outside air dampers, opens the inlet vanes on the exhaust fan, and closes the inlet vanes on the supply fan. This process locks out heating and cooling, and locks out all other commands for this HVAC equipment (including low-limit controls). Subsequent alarms and subsequent action will be locked out, except for manual override from the Firefighter s Smoke Control Station (FSCS). The alarm condition has higher priority than HVAC control. The supply fan is normally controlled through the PID using normal HVAC processes to disable the fan by the external forcing connection of the PID to Off or changing the setpoint via the Off mode control connection. An alarm controls direct forcing of the hardware outputs. The priority order for the DX-9100/9120 is as follows (1 being highest): 1. Output forcing (AO) 2. External forcing (PID) 3. Off mode control (PID) DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit 3

When all of the fire alarms have been cleared, you must reset the process from Alarm mode back into Monitor mode. To do this, use the Fire Operator Workstation (Fire OWS) to command the manual reset input to On. All of the objects for the rooftop unit, including the local sonalert, automatically receive a release priority command. Command the manual reset to Off using the Fire OWS. The warehouse is purged because the supply fan is Off and the exhaust fan is On, creating a negative pressure in the warehouse. Negative pressure in the warehouse also prevents the smoke from spreading to other areas. 4 DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit

Design Considerations Take the following design considerations into account when designing your system. In addition, refer to the Smoke Control Technical Bulletin (LIT-636330) in this manual. You can find instructions and guidelines for using the GX-9100 software tool in the GX-9100 Software Configuration Tool for Windows (LIT-6364060) document of the System 9100 Technical Manual (FAN 636.4). You can find important instructions and guidelines for using this application in How to Use the Metasys Smoke Control Library (LIT-636332), located in the Smoke Control section of this manual. For information on the definition and the initial configuration of the program and Programmable Logic Controller (PLC) modules, use the GX-9100 software tool to examine this configuration. You must define system and object names for all objects. The process runs once per second, which is the DX-9100/9120 scan rate. You must define the hardware location for each object. This automatic smoke control application does not provide a manual override. Overrides are available from an operator at the Fire OWS or at the FSCS. Most rooftop units have a purge function used when the cooling or heating system ends its On cycle. This should not be confused with a smoke control purge process or used as such. You can simply reset from Alarm mode back to Monitor mode without running purge. An alarm will occur if the command does not equal the condition for any controlled device output, including smoke dampers. Each Binary Output (BO) object for pressurization and exhaust outputs must be configured to have its own feedback (proof sensor) input. The BO s alarm attribute will indicate when command does not equal condition. The alarm attribute must be used in other applications, such as initiating the local sonalert application. For smoke dampers, there must be a positive indication of the damper s fully opened position and its fully closed position. DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit 5

Each BO object has an alarm number. Use the Report Router/Alarm Management feature to create alarm messages, and link the alarm messages to alarm numbers. For example, the alarm message may read: Alarm Number 1 - Feedback does not match the command sent to the Binary Output Obj. This application, as it exists in the GX-9100 Smoke Control Library, complies with the UL 864 UUKL Smoke Control Listing. However, you are responsible for ensuring that the Fire OWS point interface as outlined is included. Also, the application must comply with state and local regulations and be approved by the Authority Having Jurisdiction (AHJ). For UL compliance: The Fire OWS reports critical alarms based on the alarm condition, and the alarm can only be cleared by resetting from the Fire OWS or the FSCS (Firefighter s Smoke Control Station). If the DIs are used for smoke control then DI1 must be jumpered and mapped to the Fire OWS as a normal state of On. When DI1 is off, a critical alarm must be issued at both the printer and the terminal. This indicates a binary input fuse failure that must be fixed immediately, because the DI is no longer accurate. If the AOs are used for smoke control then Analog Output 1 (AO1, voltage) must be wired to Analog Input 1 (AI1, voltage) and the AI must be mapped to the Fire OWS with a low alarm limit of 20%. When the AI goes below this, it indicates that the AOs failed because of a blown fuse, which drops the AO to 0V and the AI to 0% (low alarm). The DX-9100/9120 is downloaded so that the AO is normally at 5V because its source point is an Analog Constant (ACO) with a default of 50. Response time for individual smoke control components to achieve their desired state of operational mode, exclusive of control system response, should not exceed the following time periods: 60 seconds for fan operation at the desired state plus 90 seconds to annunciate; 75 seconds for completion of damper travel plus 90 seconds to annunciate. In the case of fan start after damper close, these times are additive. If the damper must be closed before the fan starts, the total response time could be up to 135 seconds for operation, 75 seconds for damper to close plus 60 seconds for fan to start. Time to annunciate would be added to this time. (Control system response is the time from automatic detection of a smoke condition to the issuing of an appropriate command to the equipment.) 6 DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit

To maintain UL 864 UUKL Smoke Control Listing, you must connect a printer model number PRN-3 or PRN-4 to the Fire OWS or directly to the Fire Network Control Module (NCM). For printer installation, refer to the manual included with the printer. Also, configure the Report Router/Alarm Management feature to route your alarm messages to the printer. For specific wiring requirements, refer to Metasys Smoke Control Wiring Technical Bulletin (LIT-636331). DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit 7

8 DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit

Application Details Main Function Location This application provides warehouse smoke exhaust and reset logic for a rooftop unit. During a fire alarm, this process controls a rooftop unit to minimize the spread of smoke. The Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit application is located under the Fire/Security/ILC Conference of the Engineering Services Bulletin Board (BBS). Once logged on the BBS, you can download the file to your computer. The application is also located on the Advisor. Follow the path Offices>SystemServicesMilwaukee>EngineeringServices>Fire&Security. Graphic Representation layo ut Figure 1: GX-9100 Graphic Layout DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit 9

Point List Table 1: Hardware I/O Requirements Input Requirements Hardware Name of Location Module Engineer Units Req? Description AI1 FUSE3 % Yes Monitor AO Fuse DI1 FUSE5 ALA/NOR Yes DI Fuse Monitor DI2 Alarm NOR/ALA Yes Smoke/Fire Alarm DI3 SFAN_FB OFF/ON Yes Supply Fan Feedback DI4 EFAN_FB OFF/ON Yes Exhaust Fan Feedback DI5 ODA_CLO OPN/CLO Yes Outdoor Air Damper Feedback DI6 RET_CLO OPN/CLO Yes Return Air Damper Feedback Output Requirements Hardware Name of Location Module Engineer Units Req? Description AO1 FUSE3 % OPN Yes Monitor AO Fuse AO9 ODA_DPRS % OPN Yes Outside Air Dampers AO10 RET_DPRS % OPN Yes Return Air Dampers AO11 INLT_VN OFF/ON Yes Inlet Vanes DO3 SFANSS OFF/ON Yes RU Supply Fan Start/Stop DO4 EFANSS Yes Exhaust Fan Start/Stop Table 2: Software I/O Requirements Hardware Location Name of Point Engineer Units Req? Description DCO1 OWS_RST OFF/ON Yes Manual Reset ACO6 FUSE % Yes Setpoint to Maintain AO @ 5V LRS1 OUT_FRC NOR/FRC Yes Shutdown Rooftop Unit LRS2 SFAN_CTL OFF/ON Yes SFAN Control LRS3 EFAN_CTL OFF/ON Yes EFAN Control LRS9 SFANALM NOR/ALA Yes Supply Fan Alarm LRS10 EFANALM NOR/ALA Yes Exhaust Fan Alarm LRS11 ODA_ALM NOR/ALA Yes Outdoor Air Damper Alarm LRS12 RET_ALM NOR/ALA Yes Return Air Damper Alarm TS1OUT OCCD UNO/OCC Yes Occupied Control Time Schedule 10 DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit

GX-9100 Printouts Table 3: PID1 Data PID (PID1) - Data --------------------- User Name :HEATING Ena Shutoff: 0=N 0 Maximum WSP --> Shutoff Out Level 0.0000 Local Set Pt.(LSP) 70.0000 Ena Startup: 0=N 0 Proport. Band(PB) -10.0000 Startup Out Level 100.0000 Reset Action(TI) 10.0000 Ena Symm Mode: 0=N 0 Rate Action(TD) 0.0000 ExtForce Out Level 0.0000 Standby Bias(BSB) 0.0000 Ena PID to P: 0=N 0 Off Mode Bias(BOF) -100.0000 Remote Mode: 0=N 0 Symmetry Band(SBC) 5.0000 Ena OFF Trans: 0=N 0 Err Deadband(EDB) 5.0000 Process Variable --> HTG_PV Output Bias(OB) 0.0000 Remote Setpoint --> Out High Lmt(HIL) 100.0000 Reference Variable--> Out Low Lmt(LOL) 0.0000 Proportional Band --> Dev H.H.Limit(DHH) 10.0000 OFF Mode Control --> /SFANSS Dev High Limit(DH) 5.0000 Standby Control --> Dev Low Limit(DL) 5.0000 Reverse Action --> Dev L.L.Limit(DLL) 10.0000 External Forcing --> OUT_FRC Minimum WSP(MNWS) -50.0000 Output Bias --> Maximum WSP(MXWS) 999.0000 Minimum WSP --> Table 4: PID2 Data PID (PID2) - Data --------------------- User Name :COOLING Ena Shutoff: 0=N 0 Maximum WSP --> Shutoff Out Level 0.0000 Local Set Pt.(LSP) 74.0000 Ena Startup: 0=N 0 Proport. Band(PB) 10.0000 Startup Out Level 100.0000 Reset Action(TI) 10.0000 Ena Symm Mode: 0=N 0 Rate Action(TD) 0.0000 ExtForce Out Level 0.0000 Standby Bias(BSB) 0.0000 Ena PID to P: 0=N 0 Off Mode Bias(BOF) 100.0000 Remote Mode: 0=N 0 Symmetry Band(SBC) 5.0000 Ena OFF Trans: 0=N 0 Err Deadband(EDB) 5.0000 Process Variable --> CLG_PV Output Bias(OB) 0.0000 Remote Setpoint --> Out High Lmt(HIL) 100.0000 Reference Variable--> Out Low Lmt(LOL) 0.0000 Proportional Band --> Dev H.H.Limit(DHH) 10.0000 OFF Mode Control --> /SFANSS Dev High Limit(DH) 5.0000 Standby Control --> Dev Low Limit(DL) 5.0000 Reverse Action --> Dev L.L.Limit(DLL) 10.0000 External Forcing --> OUT_FRC Minimum WSP(MNWS) -50.0000 Output Bias --> Maximum WSP(MXWS) 999.0000 Minimum WSP --> DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit 11

Table 5: PID3 Data PID (PID3) - Data --------------------- User Name :RET DMPR Ena Shutoff: 0=N 0 Maximum WSP --> Shutoff Out Level 0.0000 Local Set Pt.(LSP) 76.0000 Ena Startup: 0=N 0 Proport. Band(PB) 10.0000 Startup Out Level 100.0000 Reset Action(TI) 10.0000 Ena Symm Mode: 0=N 0 Rate Action(TD) 0.0000 ExtForce Out Level 0.0000 Standby Bias(BSB) 0.0000 Ena PID to P: 0=N 0 Off Mode Bias(BOF) 0.0000 Remote Mode: 0=N 0 Symmetry Band(SBC) 5.0000 Ena OFF Trans: 0=N 0 Err Deadband(EDB) 5.0000 Process Variable --> RDMPR_PV Output Bias(OB) 0.0000 Remote Setpoint --> Out High Lmt(HIL) 100.0000 Reference Variable--> Out Low Lmt(LOL) 10.0000 Proportional Band --> Dev H.H.Limit(DHH) 10.0000 OFF Mode Control --> Dev High Limit(DH) 5.0000 Standby Control --> Dev Low Limit(DL) 5.0000 Reverse Action --> Dev L.L.Limit(DLL) 10.0000 External Forcing --> /SFANSS Minimum WSP(MNWS) -50.0000 Output Bias --> Maximum WSP(MXWS) 999.0000 Minimum WSP --> Table 6: PID4 Data PID (PID4) - Data --------------------- User Name :FAN CTRL Ena Shutoff: 0=N 0 Maximum WSP --> Shutoff Out Level 0.0000 Local Set Pt.(LSP) 1.0000 Ena Startup: 0=N 0 Proport. Band(PB) -10.0000 Startup Out Level 100.0000 Reset Action(TI) 10.0000 Ena Symm Mode: 0=N 0 Rate Action(TD) 0.0000 ExtForce Out Level 0.0000 Standby Bias(BSB) 0.0000 Ena PID to P: 0=N 0 Off Mode Bias(BOF) 0.0000 Remote Mode: 0=N 0 Symmetry Band(SBC) 5.0000 Ena OFF Trans: 0=N 0 Err Deadband(EDB) 5.0000 Process Variable --> VANE_PV Output Bias(OB) 0.0000 Remote Setpoint --> Out High Lmt(HIL) 100.0000 Reference Variable--> Out Low Lmt(LOL) 0.0000 Proportional Band --> Dev H.H.Limit(DHH) 10.0000 OFF Mode Control --> Dev High Limit(DH) 5.0000 Standby Control --> Dev Low Limit(DL) 5.0000 Reverse Action --> Dev L.L.Limit(DLL) 10.0000 External Forcing --> /SFANSS Minimum WSP(MNWS) -50.0000 Output Bias --> Maximum WSP(MXWS) 999.0000 Minimum WSP --> 12 DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit

Table 7: PID5 Data PID (PID5) - Data --------------------- User Name :OA DMPR Description : Ena Shutoff: 0=N 0 Maximum WSP --> Shutoff Out Level 0.0000 Local Set Pt.(LSP) 72.0000 Ena Startup: 0=N 0 Proport. Band(PB) 2.0000 Startup Out Level 100.0000 Reset Action(TI) 10.0000 Ena Symm Mode: 0=N 0 Rate Action(TD) 0.0000 ExtForce Out Level 0.0000 Standby Bias(BSB) 0.0000 Ena PID to P: 0=N 0 Off Mode Bias(BOF) 0.0000 Remote Mode: 0=N 0 Symmetry Band(SBC) 5.0000 Ena OFF Trans: 0=N 0 Err Deadband(EDB) 5.0000 Process Variable --> ODMPR_PV Output Bias(OB) 0.0000 Remote Setpoint --> Out High Lmt(HIL) 100.0000 Reference Variable--> Out Low Lmt(LOL) 0.0000 Proportional Band --> Dev H.H.Limit(DHH) 10.0000 OFF Mode Control --> Dev High Limit(DH) 5.0000 Standby Control --> Dev Low Limit(DL) 5.0000 Reverse Action --> Dev L.L.Limit(DLL) 10.0000 External Forcing --> /SFANSS Minimum WSP(MNWS) -50.0000 Output Bias --> Maximum WSP(MXWS) 999.0000 Minimum WSP --> DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit 13

Table 8: Timer 6 Data TIMER (TIMER6) - Data ----------------------- User Name :HDW_ALMS Description :Hardware Alarms TIMER #1 TYPE 4 TIMER #5 TYPE 4 Input Connection #1--> SFANSS Input Connection #5--> OUT_FRC Reset Connection #1--> SFAN_FB Reset Connection #5--> ODA_CLO Time Period #1 60.0000 Time Period #5 75.0000 Time Units #1 0 Time Units #5 0 TIMER #2 TYPE 4 TIMER #6 TYPE 4 Input Connection #2--> /SFANSS Input Connection #6--> OUT_FRC Reset Connection #2--> /SFAN_FB Reset Connection #6--> RET_CLO Time Period #2 60.0000 Time Period #6 75.0000 Time Units #2 0 Time Units #6 0 TIMER #3 TYPE 4 TIMER #7 TYPE 0 Input Connection #3--> EFANSS Input Connection #7--> Reset Connection #3--> EFAN-FB Reset Connection #7--> Time Period #3 60.0000 Time Period #7 10.0000 Time Units #3 0 Time Units #7 0 TIMER #4 TYPE 4 TIMER #8 TYPE 0 Input Connection #4--> /EFANSS Input Connection #8--> Reset Connection #4--> /EFAN_FB Reset Connection #8--> Time Period #4 60.0000 Time Period #8 10.0000 Time Units #4 0 Time Units #8 0 This module will indicate a failure condition if the commanded condition and feedback of the fans and dampers do not match. 14 DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit

Table 9: TS1 Data TIME SCHEDULE (TS1) - Data ----------------------------- User Name :OCCUPIED Description : External Extension --> Stop Time Event #4 0:0 External Forcing ON--> Days for Event #4 0 External Forcing OFF--> Start Time Event #5 0:0 Extension Time 60.0000 Stop Time Event #5 0:0 Start Time Event #1 8:00 Days for Event #5 Stop Time Event #1 17:00 Start Time Event #6 0:0 Days for Event #1 9 Stop Time Event #6 0:0 Start Time Event #2 0:0 Days for Event #6 Stop Time Event #2 0:0 Start Time Event #7 0:0 Days for Event #2 0 Stop Time Event #7 0:0 Start Time Event #3 0:0 Days for Event #7 Stop Time Event #3 0:0 Start Time Event #8 0:0 Days for Event #3 0 Stop Time Event #8 0:0 Start Time Event #4 0:0 Days for Event #8 Table 10: AO9 Data ANALOG OUT (AO9) - Data ------------------------- User Name :ODA_DPRS Description :Outside Air Dampers Type of Output 1 Low Range 0.0000 Source Point --> PM5OCM High Limit (%) 100.0000 Output Forcing --> OUT_FRC Low Limit (%) 0.0000 Enable Limits --> Forcing Level (%) 0.0000 Increase Source --> Hold on Powerup(0=N) 0 Decrease Source --> Auto on Powerup(0=N) 0 High Range 100.000 Table 11: AO10 Data ANALOG OUT (AO10) - Data ------------------------- User Name :RET_DPRS Description :Return Air Dampers Type of Output 1 Low Range 0.0000 Source Point --> PM3OCM High Limit (%) 100.0000 Output Forcing --> OUT_FRC Low Limit (%) 0.0000 Enable Limits --> Forcing Level (%) 0.0000 Increase Source --> Hold on Powerup(0=N) 0 Decrease Source --> Auto on Powerup(0=N) 0 High Range 100.000 DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit 15

Table 12: AO11 Data ANALOG OUT (AO11) - Data ------------------------- User Name :INLT_VN Description :Inlet Vanes Type of Output 1 Low Range 0.0000 Source Point --> PM4OCM High Limit (%) 100.0000 Output Forcing --> OUT_FRC Low Limit (%) 0.0000 Enable Limits --> Forcing Level (%) 0.0000 Increase Source --> Hold on Powerup(0=N) 0 Decrease Source --> Auto on Powerup(0=N) 0 High Range 100.000 Table 13: DO3 Data ON/OFF (DO3) - Data --------------------- User Name :SFANSS Description :RU Supply Fan Start/Stop Source Point --> SFAN_CTL Table 14: DO4 Data ON/OFF (DO4) - Data --------------------- User Name :EFANSS Description :Exhaust Fan Start/Stop Source Point --> /EFAN_CTL 16 DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit

Logic Module Ladder Diagram - PLC1 User Name :Override Description: A larm L OUT_FRC SET OW S_RST L A larm OUT_FRC RST Occd L OUT_FRC SFAN_CTL ( ) Alarm L Occd OUT_FRC EFAN_CTL ( ) Alarm L Occd wareplc1 Figure 2: Logic Module Ladder Diagram - PLC1 Figure 2 shows the logic module ladder diagram for PLC1. If the alarm is On, the logic shuts down the HVAC equipment and turns on the exhaust fan during occupied and unoccupied modes. If reset is turned on from the Fire OWS and the alarm is Off, the release override goes back to normal HVAC control. If occupied normal control is On, the logic starts the supply fan and the exhaust fan. If occupied normal control is Off, the logic stops the supply fan and the exhaust fan. DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit 17

SFANALON L SFANALOF OUT_FRC Logic Module Ladder Diagram - PLC2 User Name : FB_ALMS Description: Feedback Alarms LRS9 ( ) EFANALON L EFANALOF OUT_FRC LRS10 ( ) ODA_ALM L RET_ALM L OUT_FRC OUT_FRC LRS11 ( ) LRS12 ( ) wareplc2 Figure 3: Logic Module Ladder Diagram - PLC2 PLC2 checks for a hardware alarm condition. If there is a fire alarm and the fans do not operate properly, or the dampers do not go to 0%, an alarm is generated. Map the LRS points to Metasys with a normal condition of Off. Variations This program is set up as normal HVAC control with the process variables used as ACOs sent through the Fire OWS. The main supply fan is started based on a DX time schedule and operates in standalone mode. 18 DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit

Notes DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit 19

Notes Controls Group FAN 636 507 E. Michigan Street Metasys Network Technical Manual P.O. Box 423 Printed in U.S.A. Milwaukee, WI 53201 20 DX-9100/9120 Applications--DX-9100/9120 Warehouse Smoke Exhaust and Reset Logic for a Rooftop Unit