Automated Logic RC642 Technical Instructions
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Automated Logic RC642 Technical Instructions

Automated Logic RC642 Technical Instructions

Room controller
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Room Controller
Technical Instructions
Rev. 7/13/2011
Verify that you have the most current version of this document. Go to http://accounts.automatedlogic.com, then select Support >
Download > Documents > Technical Instructions.

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  • Page 1 Room Controller Technical Instructions Rev. 7/13/2011 Verify that you have the most current version of this document. Go to http://accounts.automatedlogic.com, then select Support > Download > Documents > Technical Instructions.

  • Page 2: Table Of Contents

    To set up a Local Access connection in WebCTRL ............24 © 2011 Automated Logic Corporation. All rights reserved throughout the world. Automated Logic Corporation, the Automated Logic logo, WebCTRL, EIKON, BACview, SuperVision, and InterOp are registered trademarks, and Alert is a trademark of Automated Logic Corporation.
  • Page 3 Troubleshooting a networked Room Controller ................25 Formatting the Room Controller .................. 25 LED's ......................... 25 Serial number ......................27 Replacing the battery in a networked Room Controller ..........27 To take the Room Controller out of service ..............27 METHOD B: Installing a stand-alone Room Controller ..............
  • Page 4 #6: Convective/fin tube heater ....................61 Control schematic ...................... 61 Point list ........................61 Sequence of operation ....................61 #7: Fan coil unit - 2-speed fan, modulated or 2-stage cooling and heating ........62 Control schematics ....................62 Point list ........................63 Sequence of operation ....................

  • Page 5: What Is The Room Controller

    A Room Controller is a combination zone sensor and controller that is used for zone control. The two models of Room Controller are: • RC642 - No user interface • RC642D - Has an LCD display and buttons that allow a user to: ○...

  • Page 6: Specifications

    Rnet port The RC642D Room Controller supports up to 4 RS Standard room sensors for averaging or high/low select control. The RC642 supports up to 3 RS Standards and one RS Plus, RS Pro, or RS Pro-F sensor. Inputs 4 inputs configurable for thermistor or dry contact. Inputs 3 and 4 are also configurable for 0–5 Vdc.

  • Page 7: Inputs

    BACnet support Conforms to the Advanced Application Controller (B-AAC) Standard Device Profile as defined in ANSI/ASHRAE Standard 135-2004 (BACnet) Annex L Listed by UL-916 (PAZX), cUL-916 (PAZX7), FCC Part 15-Subpart B- Class A, CE EN50082-1997 Inputs The Room Controller has 4 inputs that accept the signal types described below. These Support this inputs...

  • Page 8: Room Sensors

    1–3 RS Standards, and 1 RS Plus, RS Pro, or RS Pro-F RC642D 1-4 RS Standards NOTE The RC642's internal sensor counts as an RS Standard on the Rnet. The RC642D's internal sensor counts as an RS Pro on the Rnet. BACviews...

  • Page 9: Display

    Model RC642D only Display The display's default screen shows one of the following, depending on the Room Controller's setup: • The zone temperature (and alternately the outside air temperature, if programmed), plus the current Occupied/Unoccupied schedule • The current time If using a built-in control program, the display also shows the items below.

  • Page 10: Creating A Custom Control Program

    Creating a • Create a custom control program in EquipmentBuilder or EIKON LogicBuilder. If the Room Controller will be on a WebCTRL network, you may select any zone application custom control in EquipmentBuilder. However, EquipmentBuilder has a separate category for stand- program alone applications.

  • Page 11: Using This Document

    Using this document Follow the instructions for the method that applies to your Room Controller installation. METHOD A: Installing a Room Controller in a WebCTRL system (page 8) METHOD B: Installing a stand-alone Room Controller (page 28)

  • Page 12: Method A: Installing A Room Controller In A Webctrl System

    METHOD A: Installing a Room Controller in a WebCTRL system You can install the RC642 or the RC642D Room Controller as part of a WebCTRL system. To mount the Room Controller NOTE If needed, the Room Controller has a secondary backplate that you can mount behind it to cover certain junction boxes.

  • Page 13: To Address The Room Controller

    Connect the transformer wires to the Com and 24 Vac screw terminals. Power LED Run LED 1 2 3 4 5 6 7 8 Apply power to the Room Controller. Measure the voltage at the Room Controller’s power input terminals to verify that the voltage is within the operating range of 21.6–26.4 Vac.

  • Page 14: Wiring For Communications With A Controller Network

    Wiring for communications with a controller network The Room Controller communicates using BACnet on the following types of network segments: • ARC156 communicating at 156 kbps • MS/TP communicating at 9600 bps, 19.2 kbps, 38.4 kbps, or 76.8 kbps NOTE ARC156 is a unique implementation of the industry standard ARCNET. For a summary of differences between ARCNET and ARC156, see the ARC156 Wiring Technical Instructions (http://accounts.automatedlogic.com/download).

  • Page 15: Wiring An Rs Room Sensor To The Room Controller

    To this model's Rnet port... You can wire these combinations of RS room sensors... • 1 RS Plus, RS Pro, or RS Pro-F RC642 • 1–3 RS Standards • 1–3 RS Standards, and 1 RS Plus, RS Pro, or RS Pro-F...

  • Page 16: To Wire An Rs Room Sensor To The Room Controller

    Shielding If shielded, Aluminum/Mylar shield (100% coverage) with TC drain wire UL temperature rating 32–167°F (0–75°C) Voltage 300 Vac, power limited Listing UL: NEC CL2P, or better To wire an RS Remove power from the Room Controller. room sensor to Partially cut, then bend and pull off the outer jacket of the Rnet cable(s).

  • Page 17: Wiring Inputs And Outputs

    Wiring inputs and outputs Digital Output 1 Analog Output 1 Analog Output 2 Digital Output 2 Ground Digital Output 3 Input 1 Digital Output 4 Input 2 Digital Output 5 Input 3 Digital Output 6 Input 4 Ground 1 2 3 4 5 6 7 8 UI-3 Jumper UI-4 Jumper Wiring...
  • Page 18 NOTE Connect the shield wire to the GND terminal with the ground wire. Thermistor Any input contact Input 3 & 4 only 2 wire 0-5 Vdc Input 3 & 4 only 3 wire 0-5 Vdc Out + 4 wir e Input 3 &...

  • Page 19: To Set Display Options For A Networked Rc642D Room Controller

    Connect the analog output wiring to the screw terminals on the Room Controller and to the controlled device. 0-10 V Any AO Apply power to the Room Controller. To set display options for a networked RC642D Room Controller Remove power from the Room Controller. Set DIP switches 5 and 6 as needed.

  • Page 20: Downloading The Room Controller

    Downloading the Room Controller Download the following items to the Room Controller's battery-backed memory: Item Notes Control program Must be in WebCTRLx.x\webroot\<system_name>\programs. DRV_RCM driver Must be in WebCTRLx.x\webroot\<system_name>\drivers. NOTE To verify that you have the driver's latest version, go to http://accounts.automatedlogic.com/download, then select Drivers >...

  • Page 21: To Assign Inputs Or Outputs To Points

    To assign inputs or outputs to points To use an input or output, you must assign it to its corresponding point in the control program. In WebCTRL's GEO tree, select the equipment controlled by the Room Controller. On the Properties page, select the I/O Points tab. In each point's Num field, type the number of the controller's corresponding input or output.

  • Page 22: Output Values

    Output values Output I/O Type Sensor/Actuator Type Min/Max Analog (BAO) 0-10 Vdc Electrical Linear Full Range Engineering values 0–10 Volt associated with 0 Vdc (Min) and 10 Vdc (Max) 2-10 Vdc Electrical Linear w/Offset, Engineering values 0–10 Volt 2–10 Volts associated with 2 Vdc (Min) and 10 Vdc (Max) Digital (Binary) (BBO)

  • Page 23: Offset/Polarity Values

    Offset/Polarity Offset/Polarity is not particular to a type of input or output, but the driver handles analog and digital (binary) inputs and outputs differently. To set these values appropriately, you values should understand how the driver uses them. Offset/Polarity Notes Analog Input Offset value (positive or negative) adds a fine adjustment to a sensor (BAI)

  • Page 24: To Set Up The Driver

    To set up the driver After you download the driver and control program(s) to the Room Controller, you may want to change the driver's properties to suit your application. On WebCTRL's NET tree, click to the left of your Room Controller. Click to the left of Driver to see its children.

  • Page 25: Device

    Device On the Device page, you can change the following properties: • BACnet device object properties for the Room Controller • Room Controller network communication Configuration NOTE The three APDU fields refer to all networks over which the Room Controller communicates. Max Masters and Max Info Apply only if the Room Controller is on an MS/TP network.

  • Page 26: Calendars

    Recipient Device Object Type the Device Instance from SiteBuilder (or from the Identifier network administrator for third-party devices) in the # field. Process Identifier Change for third-party devices that use a BACnet Process Identifier other than 1. WebCTRL processes alarms for any 32-bit Process Identifier.

  • Page 27: Switch And Jumper Positions

    Switch and The Switch and Jumper Positions page shows the current physical settings on the Room Controller. Jumper Positions Display Options The Display Options page shows the current selections for the information displayed in the RC642D Room Controller. On this page, you can choose to have: •...

  • Page 28: To Set Up A Local Access Connection In Webctrl

    Connect the USB Link Kit to the computer and to the controller's Local Access port. Connect to Connect to computer’s the Local USB port Access port USB Link Kit NOTE If using a USB isolator, plug the isolator into your computer's USB port, and then plug the USB Link Kit cable into the isolator.

  • Page 29: Troubleshooting A Networked Room Controller

    Troubleshooting a networked Room Controller If you have problems mounting, wiring, or addressing the Room Controller, contact ALC Technical Support. Formatting the If you cannot communicate with the Room Controller after downloading it, as a last resort, you can manually format the Room Controller to erase its memory. Room Controller Remove power from the Room Controller.
  • Page 30 The Run and Error LED's indicate controller and network status. If Run LED shows... And Error LED shows... Status is... 2 flashes per second Normal 2 flashes per second 2 flashes, Five minute auto-restart delay alternating with Run LED after system error 2 flashes per second 3 flashes, The controller has just been...

  • Page 31: Serial Number

    If you need the Room Controller's serial number when troubleshooting, the number is on: Serial number • a sticker on the back of the main controller board • a Module Status report (Modstat) under Core (or Main) board hardware To obtain a modstat in WebCTRL: Select the Room Controller in the NET tree.

  • Page 32: Method B: Installing A Stand-Alone Room Controller

    METHOD B: Installing a stand-alone Room Controller You can install the RC642D Room Controller as a stand-alone unit, but not the RC642. To mount the Room Controller NOTE If needed, the Room Controller has a secondary backplate that you can mount behind it to cover certain junction boxes.

  • Page 33: Wiring Inputs And Outputs

    Connect the transformer wires to the Com and 24 Vac screw terminals. Power LED Run LED 1 2 3 4 5 6 7 8 Apply power to the Room Controller. Measure the voltage at the Room Controller’s power input terminals to verify that the voltage is within the operating range of 21.6–26.4 Vac.

  • Page 34: To Wire Inputs And Outputs

    • Acceptable voltage drop in the wire from the controller to the controlled device • Resistance (Ohms) of the chosen wire gauge • Maximum current (Amps) the controlled device requires to operate To wire inputs Verify that the Room Controller's power and communications connections work properly.

  • Page 35: Selecting Or Downloading A Control Program

    Selecting or downloading a control program For a stand-alone Room Controller, you can use one of the 12 built-in control programs or download a custom control program. To select a built- See Appendix B (page 42) for a full description of each control program. in control program Remove power from the Room Controller.
  • Page 36 To use this Set the rotary control program... With these features... switches to... • Scheduled operation Air source heat • Freeze protection (optional) – Requires pump - reverse to sensor heat • Single-speed fan • 2-stage compressor • 2-stage supplemental heat •...
  • Page 37 To use this Set the rotary control program... With these features... switches to... • Scheduled operation Air source heat • Single-speed fan – Cycles on and off with pump – intermittent heating or cooling fan - reverse to cool • 2-stage compressor •...
  • Page 38 To use this Set the rotary control program... With these features... switches to... • Scheduled operation Fan coil unit – • Freeze protection (optional) – Requires 3-speed fan, sensor 1-stage or • modulated cooling, Smoke detection (optional) – Requires sensor 2-stage or •...

  • Page 39: To Download A Custom Control Program

    To use this Set the rotary control program... With these features... switches to... • Scheduled operation Unit ventilator – • Freeze protection (optional) – Requires 2-speed fan sensor • Single or 2-speed fan • 2-stage DX cooling • Modulating hot water valve (analog) OR 2-stage heating •...

  • Page 40: To Set Up A Stand-Alone Rc642D Room Controller

    12 Click Download Selected Items. NOTE If the download fails, the Room Controller appears in the Failures box. Since this indicates a system problem, do not clear the failure. Locate and resolve the problem, then retry the download. To retry, select the controller in the Failures box, then repeat steps 4 and 5 above.

  • Page 41: To Set The Time And Date

    To set the time You may need to adjust the time, date, or year in the Room Controller. and date Tap the TIME button until the display shows the setting you want to change. NOTE If the default screen shows the time, push TIME once to make the time editable.

  • Page 42: Troubleshooting A Stand-Alone Room Controller

    To set the beginning time for the schedule, tap to change the minutes or hold down the buttons to change the hour. Press SCHEDULE again and set the beginning time for the Unoccupied schedule. NOTE To delete a schedule, set Occupied and Unoccupied to the same time. Troubleshooting a stand-alone Room Controller If you have problems mounting, wiring, or addressing the Room Controller, contact ALC Technical Support.

  • Page 43: Serial Number

    If Run LED shows... And Error LED shows... Status is... 2 flashes per second Exec halted after frequent system errors or control programs halted 5 flashes per second Exec start-up aborted, Boot is running 5 flashes per second Firmware transfer in progress, Boot is running 7 flashes per second 7 flashes per second,...

  • Page 44: Compliance

    Compliance FCC Compliance This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.

  • Page 45: Appendix A - Room Controller Diagram

    Appendix A - Room Controller diagram Digital Output 1 Analog Output 1 Digital Output 2 Analog Output 2 Ground Digital Output 3 Input 1 Digital Output 4 Input 2 Digital Output 5 Input 3 Digital Output 6 Input 4 Ground 10’s 1’s Format jumper...

  • Page 46: Appendix B - Built-In Control Programs In A Stand-Alone Room Controller

    Appendix B - Built-in control programs in a stand-alone Room Controller This appendix provides the following information for each of the Room Controller's 12 built-in control programs: • Control schematic • Point list • Sequence of operation The 12 built-in control programs are: #1 100% outside air unit (page 43) #2 Air source heat pump - reverse to heat (page 47) #3 Air source heat pump - reverse to cool (page 51)

  • Page 47: 1: 100% Outside Air Unit

    #1: 100% outside air unit Control schematics Typical layout with analog heating and cooling: BI - Smoke detector (optional) BO - Outside air damper BI - Freezestat AI - Discharge air temp (optional) (optional) N.C. BI - Supply fan status (optional) BO - Supply fan start/stop AO - Heating valve...

  • Page 48: Point List

    Point list Hardware Points Point Name BO AO I/O # Comments Zone temp Internal Zone setpoint Internal adjust Zone override Internal Smoke detector UI-1 Optional – Requires sensor (dry contact) Discharge temp UI-2 Optional – Requires sensor (Type II thermistor) Freezestat UI-3 Optional –...
  • Page 49 Zone setpoint adjust The occupant can adjust the heating and cooling setpoints at the zone sensor. Zone unoccupied override The occupant can press a button to override the schedule and place the unit in occupied mode for 30 minutes. Each additional press of the button adds 30 minutes, to a maximum of 90 minutes.
  • Page 50 If chilled water is used, the Room Controller measures the zone temperature and modulates the chilled water valve to maintain the cooling setpoint. The cooling analog output opens to 50% when the freezestat is on. Cooling is enabled when: • The unit is running, and •...

  • Page 51: 2: Air Source Heat Pump - Reverse To Heat

    #2: Air source heat pump - reverse to heat Control schematic AO - Mixed air dampers N.O. (optional) AI - Outside air temp BI - Freezestat AI - Discharge air temp (optional) (optional) (optional) N.C. BO - Reversing valve Elec BO - Compressor stage 1 BO - Heating stage 1 (optional)

  • Page 52: Sequence Of Operation

    Hardware Points Point Name BO AO I/O # Comments Fan start/stop DO-3 (G) Relay output Supplemental heat DO-4 (W1) Optional – Relay output stage 1 Supplemental heat DO-5 (W2) Optional – Relay output stage 2 Reversing valve DO-6 Relay output. Closed = Heating Mixed air dampers AO-1 Optional –...
  • Page 53 Freeze protection (optional) The unit shuts down when it receives a freezestat status. The fan runs when the unit runs, unless safeties stop the fan. The fan runs for 5 minutes after the heating or cooling coils go inactive, to cool or dry the coils. Heating and cooling - 2 compressor stages The Room Controller measures the zone temperature and stages the compressors to maintain setpoint.
  • Page 54 The outside air dampers close when the unit is off. If the unit operates in the unoccupied mode, the economizer operates as described in the occupied mode except that the outside air damper minimum position is 0% open. Two-position outside air dampers (optional) - Used in place of Economizer when no outside air temperature sensor is present.

  • Page 55: 3: Air Source Heat Pump - Reverse To Cool

    #3: Air source heat pump - reverse to cool Control schematic AO - Mixed air dampers N.O. (optional) AI - Outside air temp BI - Freezestat AI - Discharge air temp (optional) (optional) (optional) N.C. BO - Reversing valve Elec BO - Compressor stage 1 BO - Heating stage 1 (optional)

  • Page 56: Sequence Of Operation

    Hardware Points Point Name BO AO I/O # Comments Fan start/stop DO-3 (G) Relay output Supplemental heat DO-4 (W1) Optional – Relay output stage 1 Supplemental heat DO-5 (W2) Optional – Relay output stage 2 Reversing valve DO-6 Relay output. Closed = Cooling Mixed air dampers AO-1 Optional –...
  • Page 57 Freeze protection (optional) The unit shuts down when it receives a freezestat status. The fan runs when the unit runs, unless safeties stop the fan. The fan runs for 5 minutes after the heating or cooling coils go inactive, to cool or dry the coils. Heating and cooling - 2 compressor stages The Room Controller measures the zone temperature and stages the compressors to maintain setpoint.
  • Page 58 The outside air dampers close when the unit is off. If the unit operates in the unoccupied mode, the economizer operates as described in the occupied mode except that the outside air damper minimum position is 0% open. Two-position outside air dampers (optional) - Used in place of Economizer when no outside air temperature sensor is present.

  • Page 59: 4: Air Source Heat Pump - Intermittent Fan - Reverse To Heat

    #4: Air source heat pump - intermittent fan - reverse to heat Control schematic BO - Reversing valve Elec BO - Heating stage 1 (optional) BO - Heating stage 2 (optional) BI - Fan status (optional) AI - Zone temp BO - Fan start/stop AI - Zone setpoint adjust BI - Zone override...

  • Page 60: Sequence Of Operation

    Sequence of Run conditions - scheduled operation User-defined schedules determine when the unit runs in: • Occupied Mode The unit maintains a 74°F (23.5°C) adjustable cooling setpoint and a 70°F (21°C) adjustable heating setpoint. • Unoccupied Mode (night setback) The unit maintains an 85°F (29.5°C) adjustable cooling setpoint and a 55°F (13°C) adjustable heating setpoint.
  • Page 61 Cooling is enabled when: • The zone temperature is above the heating setpoint, and • The fan status is on, and • The reversing valve is in cool mode. The compressor turns off for 30 seconds after the reversing valve changes position. Supplemental heating stages The Room Controller measures the zone temperature and stages the heating to maintain heating setpoint if the compressors do not meet the heating demand.

  • Page 62: 5: Air Source Heat Pump - Intermittent Fan - Reverse To Cool

    #5: Air source heat pump - intermittent fan - reverse to cool Control schematic BO - Reversing valve Elec BO - Heating stage 1 (optional) BO - Heating stage 2 (optional) BI - Fan status (optional) AI - Zone temp BO - Fan start/stop AI - Zone setpoint adjust BI - Zone override...

  • Page 63: Sequence Of Operation

    Sequence of Run conditions - scheduled operation User-defined schedules determine when the unit runs in: • Occupied Mode The unit maintains a 74°F (23.5°C) adjustable cooling setpoint and a 70°F (21°C) adjustable heating setpoint. • Unoccupied Mode (night setback) The unit maintains an 85°F (29.5°C) adjustable cooling setpoint and a 55°F (13°C) adjustable heating setpoint.
  • Page 64 Cooling is enabled when: • The zone temperature is above the heating setpoint, and • The fan status is on, and • The reversing valve is in cool mode. The compressor turns off for 30 seconds after the reversing valve changes position. Supplemental heating stages The Room Controller measures the zone temperature and stages the heating to maintain heating setpoint if the compressors do not meet the heating demand.

  • Page 65: 6: Convective/Fin Tube Heater

    #6: Convective/fin tube heater Control schematic AO - Heating valve AI - Zone temp Point list Hardware Points Point Name BO AO I/O # Comments Zone temp Internal Hot water valve AO-2 Open hot water DO-4 (W1) Optional – 120 sec floating valve motor output.

  • Page 66: 7: Fan Coil Unit - 2-Speed Fan, Modulated Or 2-Stage Cooling And Heating

    #7: Fan coil unit - 2-speed fan, modulated or 2-stage cooling and heating Control schematics Typical layout with analog heating and cooling: BI - Smoke detector (optional) BI - Freezestat AI - Discharge air temp (optional) (optional) BI - Fan status (optional) BO - Fan low speed AO - Heating valve...

  • Page 67: Point List

    Point list Hardware Points Point Name BO AO I/O # Comments Zone temp Internal Zone setpoint Internal adjust Zone override Internal Smoke detector UI-1 Optional – Requires sensor (dry contact) Discharge temp UI-2 Optional – Requires sensor (Type II thermistor) Freezestat UI-3 Optional –...
  • Page 68 Zone setpoint adjust The occupant can adjust the heating and cooling setpoints at the zone sensor. Zone unoccupied override The occupant can press a button to override the schedule and place the unit in occupied mode for 30 minutes. Each additional press of the button adds 30 minutes, to a maximum of 90 minutes.
  • Page 69 The cooling analog output opens to 50% when the freezestat is on. Cooling is enabled when: • The unit is running, and • The fan status is on, and • The unit is not heating. Heating If staged heating is used, the Room Controller measures the zone temperature and turns on the first and second stage heating (if available) as needed to maintain the heating setpoint.

  • Page 70: 8: Fan Coil Unit - 3-Speed Fan, 2-Stage Or Modulated Cooling, 1-Stage Or Modulated Heating

    #8: Fan coil unit - 3-speed fan, 2-stage or modulated cooling, 1-stage or modulated heating Control schematics Typical layout with analog heating and cooling: BI - Smoke detector (optional) AI - Discharge air temp BI - Freezestat (optional) (optional) BI - Fan status (optional) BO - Fan low speed AO - Heating valve...

  • Page 71: Point List

    Point list Hardware Points Point Name BO AO I/O # Comments Zone temp Internal Zone setpoint Internal adjust Zone override Internal Smoke detector UI-1 Optional – Requires sensor (dry contact) Discharge temp UI-2 Optional – Requires sensor (Type II thermistor) Freezestat UI-3 Optional –...
  • Page 72 Zone setpoint adjust The occupant can adjust the heating and cooling setpoints at the zone sensor. Zone unoccupied override The occupant can press a button to override the schedule and place the unit in occupied mode for 30 minutes. Each additional press of the button adds 30 minutes, to a maximum of 90 minutes.
  • Page 73 If chilled water is used, the Room Controller measures the zone temperature and modulates the chilled water valve to maintain the cooling setpoint. The cooling analog output opens to 50% when the freezestat is on. Cooling is enabled when: • The unit is running, and •...

  • Page 74: 9: Fan Coil Unit - 3-Speed Fan, 1-Stage Or Modulated Cooling, 2-Stage Or Modulated Heating

    #9: Fan coil unit - 3-speed fan, 1-stage or modulated cooling, 2-stage or modulated heating Control schematics Typical layout with analog heating and cooling: BI - Smoke detector (optional) AI - Discharge air temp BI - Freezestat (optional) (optional) BI - Fan status (optional) BO - Fan low speed AO - Heating valve...

  • Page 75: Point List

    Point list Hardware Points Point Name BO AO I/O # Comments Zone temp Internal Zone setpoint Internal adjust Zone override Internal Smoke detector UI-1 Optional – Requires sensor (dry contact) Discharge temp UI-2 Optional – Requires sensor (Type II thermistor) Freezestat UI-3 Optional –...
  • Page 76 Zone setpoint adjust The occupant can adjust the heating and cooling setpoints at the zone sensor. Zone unoccupied override The occupant can press a button to override the schedule and place the unit in occupied mode for 30 minutes. Each additional press of the button adds 30 minutes, to a maximum of 90 minutes.
  • Page 77 The cooling analog output opens to 50% when the freezestat is on. Cooling is enabled when: • The unit is running, and • The fan status is on, and • The unit is not heating. Heating If staged heating is used, the Room Controller measures the zone temperature and turns on the first and second stage heating (if available) as needed to maintain the heating setpoint.

  • Page 78: 10: Fan Coil Unit - Intermittent Fan, Modulated Or 2-Stage Cooling And Heating

    #10: Fan coil unit - intermittent fan, modulated or 2-stage cooling and heating Control schematics Typical layout with analog heating and cooling: BI - Smoke detector (optional) AI - Discharge air temp BI - Freezestat (optional) (optional) BI - Fan status (optional) BO - Fan start/stop AO - Heating valve...

  • Page 79: Point List

    Point list Hardware Points Point Name BO AO I/O # Comments Zone temp Internal Zone setpoint Internal adjust Zone override Internal Smoke detector UI-1 Optional – Requires sensor (dry contact) Discharge temp UI-2 Optional – Requires sensor (Type II thermistor) Freezestat UI-3 Optional –...
  • Page 80 Zone setpoint adjust The occupant can adjust the heating and cooling setpoints at the zone sensor. Zone unoccupied override The occupant can press a button to override the schedule and place the unit in occupied mode for 30 minutes. Each additional press of the button adds 30 minutes, to a maximum of 90 minutes.
  • Page 81 Cooling is enabled when: • The unit is running, and • The fan status is on, and • The unit is not heating. Heating If staged heating is used, the Room Controller measures the zone temperature and turns on the first and second stage heating (if available) as needed to maintain the heating setpoint.

  • Page 82: 11: Fan Coil Unit - Heat Controlled Fan, Modulated Or 2-Stage Cooling And Heating

    #11: Fan coil unit - heat controlled fan, modulated or 2-stage cooling and heating Control schematics Typical layout with analog heating and cooling: BI - Smoke detector (optional) AI - Discharge air temp BI - Freezestat (optional) (optional) BI - Fan status (optional) BO - Fan start/stop AO - Heating valve...

  • Page 83: Point List

    Point list Hardware Points Point Name BO AO I/O # Comments Zone temp Internal Zone setpoint Internal adjust Zone override Internal Smoke detector UI-1 Optional – Requires sensor (dry contact) Discharge temp UI-2 Optional – Requires sensor (Type II thermistor) Freezestat UI-3 Optional –...
  • Page 84 Zone setpoint adjust The occupant can adjust the heating and cooling setpoints at the zone sensor. Zone unoccupied override The occupant can press a button to override the schedule and place the unit in occupied mode for 30 minutes. Each additional press of the button adds 30 minutes, to a maximum of 90 minutes.
  • Page 85 The cooling analog output opens to 50% when the freezestat is on. Cooling is enabled when: • The unit is running, and • The fan status is on, and • The unit is not heating. Heating If staged heating is used, the Room Controller measures the zone temperature and turns on the first and second stage heating (if available) as needed to maintain the heating setpoint.

  • Page 86: 12: Unit Ventilator - 2-Speed Fan

    #12: Unit ventilator - 2-speed fan Control schematics Typical layout with analog heating and cooling: AO - Mixed air dampers N.O. AI - Outside air temp BI - Freezestat AI - Discharge air temp (optional) (optional) (optional) N.C. BO - Fan low speed BO - Cooling stage 1 BO - Fan high speed (optional)

  • Page 87: Point List

    Point list Hardware Points Point Name BO AO I/O # Comments Zone temp Internal Zone setpoint Internal adjust Zone override Internal Outdoor air temp UI-1 Optional – Requires sensor (Type II thermistor) NOTE Short input to ground if not used. Discharge air temp UI-2 Optional –...
  • Page 88 Zone unoccupied override The occupant can press a button to override the schedule and place the unit in occupied mode for 30 minutes. Each additional press of the button adds 30 minutes, to a maximum of 90 minutes. When the override time ends, the schedule controls the unit again.
  • Page 89 The heating analog output opens to 100% when the freezestat is on. Heating is enabled when: • The unit is running, and • The fan status is on, and • The unit is not cooling. Economizer (optional): The Room Controller measures the zone temperature and modulates the outside air dampers to maintain the cooling setpoint.

  • Page 90: Appendix C - Editing Properties In A Built-In Control Program

    Appendix C - Editing properties in a built-in control program To edit certain properties (page 88) in a built-in control program, you can temporarily connect the following items to the Room Controller's Local Access port: • The BACview Handheld. See To use a BACview6 Handheld below. •...
  • Page 91 NOTES • To move within a screen, use the arrow keys. Screens that show a scroll indicator are longer than 4 rows. • To jump to another screen, press a softkey. A [Prev] link jumps to the previous screen. • The BACview 's screen goes dim after 10 minutes of inactivity.
  • Page 92 Optional. To edit another property in this same screen, repeat steps 1 through 4. Press the OK softkey to save all changes to the screen. NOTE Pound signs (#####) indicate that a value has too many digits to display in the existing field.

  • Page 93: Editable Properties

    Editable properties The table below shows the editable properties in these built-in control programs: 100% outside air unit Air source heat pump - reverse to heat Air source heat pump - reverse to cool Air source heat pump - intermittent fan - reverse to heat Air source heat pump - intermittent fan - reverse to cool Convective/fin tube heater Fan coil unit - 2-speed fan, modulated or 2-stage cooling and heating...
  • Page 94 Used in control program Properties Units Default Miscellaneous No Heating Above*** 100% Heating Below*** 100% Cooling Above*** No Cooling Below*** Min OA Damper Pos Activate Rev Valve For Heat Cool Heat Cool Turn fan on when TLO is pressed? Configure Heating display AO or BO text**** Configure Cooling display...

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