Engineering Guide SpecsViconics Electronics Inc

VT7200 Series PIR Ready Zoning ThermostatsJune 2008

Viconics VT7200 Series PIR Ready Zoning Thermostats

General – The VT7200 series PIR Ready low-voltage microprocessor-based zoning thermostats have been specifically designed to control either 0-10Vdc, staged, three-point floating heating or cooling terminal systems. Non-communicating stand-alone as well as communicating BACnet, Echelon and Zigbee wireless models are available depending on the application.

Quality Assurance - The thermostat shall be manufactured within a certified ISO 9001 and ISO 14001 facility and must have the following industry approvals:

All models:

  • UL 873 (US)
  • CSA C22.2 No.24 (CANADA)
  • File E27734 with CCN XAPX (US)
  • XAPX7 (CANADA)
  • Industry Canada:ICES-003 (Canada)

Stand-Alone, BACnet & Lon models:

  • FCC Compliant to CFR 47, Part 15, Subpart B, Class A (US)
  • CE EMC Directive 89/336/EEC (Europe Union)
  • C-Tick AS/NZS CISPR 22 Compliant (Australia / New Zealand) Supplier Code number N10696

Wireless models

  • FCC: Compliant to: Part 15, Subpart C

VT7200

General – The low-voltage zoning thermostat shall be capable of (ON/OFF, three point floating, 0-10Vdc analog) control of a VAV damper actuator, two-pipe heating and/or cooling applications, or four-pipe heating and cooling applications as well as auxiliary re-heat (if necessary). The thermostat shall be (a non-communicating stand-alone model, BACnet MS_TP communicating model, Echelon Lontalk communicating model or Zigbee wireless communicating model).

  • Thermostat shall be equipped with large, 2 line, 16 character LCD dual intensity backlit display with two status LEDs showing heating or cooling mode.
  • Thermostat shall achieve accurate temperature control using a PI proportional-integral algorithm. Traditional differential-based thermostats are not acceptable.
  • Thermostat shall have an embedded local “real text” configuration utility for simplified sequence selection, start-up and configuration using an integrated three-button keypad. Thermostats requiring external configuration tools or network interface for start-up and configuration are not acceptable.
  • Thermostat shall be supplied (without networking interface, BACnet MS_TP network interface, Echelon Lontalk network interface, Zigbee wireless network interface). BACnet MS/TP versions shall be provided with Protocol Implementation Conformance Statement or Lonmark approval disclosing all object/SNVT properties and instance numbers to facilitate the integration process.Echelon-Lontalk Communicating versions shall be provided with appropriate application files and LNS plug-in as required free of charge from the manufacturer.
  • Thermostat shall utilize EEPROM memory to back up local configuration parameters in the event of power failure. Thermostats requiring batteries, or have no provisions for retention during loss of power shall not be acceptable.
  • Thermostat shall have integrated changeover function, which will allow seamless switching between cooling and heating mode based upon temperature or network value input.
  • Thermostat shall be provided with two (2) floating or two (2) analog proportional-integral control outputs and one configurable auxiliary output to be used for heating, or local digital output.
  • Thermostat shall be compatible with the Viconics VI-PIR “Passive Infrared” cover for advanced active occupancy logic. An additional occupancy level “Stand-by” shall be added between “occupied” and “unoccupied” modes for additional energy savings strategies. The thermostat can be retrofitted with the VI-PIR cover on site.
  • Thermostat shall be capable of local or remote override during unoccupied mode. The thermostat shall resume occupied setpoints and will revert back to unoccupied setpoints after a certain amount of time (adjustable from 0 – 24hours in one hour increments).
  • Thermostat shall have configurable temporary or permanent local override setpoints. When the “temporary setpoints” mode is enabled, once the temporary occupancy timer expires, the setpoints will revert back to their default values.
  • Thermostat shall have four (4) adjustable keypad lockout levels limiting access to changes of occupied and unoccupied setpoints.
  • Thermostat shall have adjustable local unoccupied heating and cooling setpoint limits as well as maximum heating and minimum cooling limits.
  • Thermostat shall have an adjustable deadband (from 2F to 5F in 1 increments, 1C to 2.5C in 0.5 increments).
  • Thermostat shall provide the following local monitoring capabilities:

DI-1

  1. None: No function will be associated with the input (free input to be used for alarming or monitoring of a remote digital contact to be shared over a communications network).
  2. Remote Night Setback: Remote night setback timer clock input. Scheduling shall be set as per the binary input providing low cost setback operation via a dry contact.
  3. Motion NO and Motion NC: Advanced PIR occupancy functions using Normally Open (NO) or Normally Closed (NC) remote PIR motion sensor. Occupancy mode shall be set as per applied PIR function and configuration
  4. EMS: Door/window strategy. Shall display an alarm if door/window is open and thus heating/cooling has stopped.

DI-2

  1. None: No function will be associated with the input (free input to be used for alarming or monitoring of a remote digital contact to be shared over a communications network).
  2. (Door Dry) Door contact & Motion detector: This configuration is only functional if binary input #1 is set to Motion NO or Motion NC or a PIR accessory cover is used. When sequence is enabled, the occupancy shall be dictated through 2 inputs. Any motion detected shall set the zone to occupied status. The zone shall remain permanently in occupied mode until the door contact switch opens momentarily. The thermostat shall then go in stand-by mode. If more movements are detected, the occupied mode shall resume. While the door is opened, any movements detected by the remote PIR sensor or the PIR accessory cover shall be ignored.
  3. Remote Override: Temporary occupancy remote override contact. Local keypad override shall be disabled. Override function shall be controlled only by a manual remote toggle signal.
  4. Filter: A backlit flashing Filter alarm shall be displayed on the local thermostat LCD screen when input (from a differential pressure switch) is energized.
  5. Service: A backlit flashing Service alarm shall be displayed on the local thermostat LCD screen when input (ex. rooftop unit malfunction) is energized.

UI-3

  1. None: No function will be associated with the input (free input to be used for monitoring of a remote 10k type II thermistor (discharge air, outside air, return air etc.) to be shared over a communications network)
  2. COC/NH: Change over dry contact - Normally Heat: For two-pipe systems
  3. COC/NC: Change over dry contact - Normally Cool: For two-pipe systems
  4. (COS): Change over analog sensor: For two-pipe systems
  5. (SS) Supply air sensor monitoring: Used for supply air temperature monitoring.

Sequence / Mode Menu
0 = Cooling only / Off - Cool
1 = Heating only / Off - Heat
2 = Cooling with reheat / Off – Auto – Heat – Cool
3 = Heating with reheat / Off - Heat
4 = Cooling and Heating (2 modulating outputs) / Off – Auto – Heat – Cool
5 = Cooling / Heating (2 modulating outputs)
with reheat / Off – Auto – Heat – Cool
  • Thermostat shall be provided with six unique sequences to meet the needs of most zone temperature control applications.
  • Thermostat shall be pre-programmed, containing all required I/O to accomplish local HVAC temperature control.
  • Thermostats shall be provided with intelligent HMI, to which will display services only as are available as switched through local digital input or network layer such as:
  • Outdoor air temperature display only enabled when outdoor air temperature network variable is received.
  • “Stand-by time” and “Stand-by setpoint” parameters available only when VI-PIR cover is connected.
  • COM Address and various other parameters when a communication module is integrated inside the unit.

VI-PIR Viconics Passive Infrared Cover

  • Thermostat shall be supplied with (or capable of being retrofitted on site) with the VI-PIR cover. Passive infrared sensor shall be integrated into the cover of the thermostat. Controls with remote motion detectors are not acceptable.
  • VI-PIR shall add a third level of occupancy, “Stand-by” in between “Occupied” and “Unoccupied”. Thermostat shall have an adjustable “Stand-by timer” integrated to change the occupancy mode from “Occupied” to “Stand-by” if no motion is detected. Additionally, the thermostat shall drop from “Stand-by” mode to “Unoccupied” if no motion is detected for a certain amount of time during “Stand-by” mode. Both timers are adjustable. “Stand-by” mode shall have adjustable heating and cooling setpoints. Stand-by setpoints are intended to be set a few degrees less or more than “Occupied” setpoints to ensure a quick recovery to “Occupied” setpoints when motion is detected. Controls with motion detectors that only switch from “Unoccupied” mode to “Occupied” mode without a stand-by mode are not acceptable.

Thermostats shall be Viconics, model VT7200x5x00x
Objects Table

BACnet / Wireless
Object Name / Type and Instance / Object Property / VT7200C5000B / VT7200F5000B / Type and Instance / Object Property / VT7200C5x00W / VT7200F5x00W
Room Temperature / AV 7 / (R,W) /  /  / AV xx / (R,W) /  / 
Room Temp Override / BV 8 / (R,W) /  / 
Outdoor Temperature / AV 9 / (R,W) /  /  / AV xx / (R,W) /  / 
AUX Output / BV 49 / (R,W) /  / 
Sequence of Operation / MV 41 / (R,W) /  /  / MV xx / (R,W) /  / 
System Mode / MV 14 / (R,W) /  /  / MV xx / (R,W) /  / 
Occupancy Command / MV 13 / (R,W) /  /  / MV xx / (R,W) /  / 
Control Output / GRP 57 / (R) /  / 
PI Heating Demand / AV 58 / (R) /  /  / AV xx / (R) /  / 
PI Cooling Demand / AV 59 / (R) /  /  / AV xx / (R) /  / 
Supply Temperature / AI 12 / (R) /  /  / AV xx / (R,W) /  / 
HeartbeatDelay / AV xx / (R) /  / 
Controller Status / GRP 65 / (R) /  / 
AUX Status / BI 69 / (R) /  /  / BV xx / (R) /  / 
Heating Valve Status / MV 70 / (R) / 
Cooling Valve Status / MV 71 / (R) / 
BI 1 Status / BI 66 / (R) /  /  / BV xx / (R) /  / 
BI 2 Status / BI 67 / (R) /  /  / BV xx / (R) /  / 
UI 3 Status / BI 68 / (R) /  /  / BV xx / (R) /  / 
Local Motion / BI 73 / (R) /  / 
Effective Occupancy / MV 74 / (R) /  /  / MV xx / (R) /  / 
PIRmotionStatus /  /  / BV xx / (R) /  / 
Controller Alarms / GRP 61 / (R) /  / 
Window Alarm / BI 62 / (R) /  / 
Filter Alarm / BI 63 / (R) /  / 
Service Alarm / BI 64 / (R) /  / 
Alarms /  /  / MV xx / (R) /  / 
Temperature Setpoints / GRP 50 / (R) /  / 
Occupied Heat Setpoint / AV 51 / (R,W) /  /  / AV xx / (R,W) /  / 
Occupied Cool Setpoint / AV 52 / (R,W) /  /  / AV xx / (R,W) /  / 
Stand-by Heat Setpoint / AV 55 / (R,W) /  /  / AV xx / (R,W) /  / 
BACnet / Wireless
Object Name / Type and Instance / Object Property / VT7200C5000B / VT7200F5000B / Type and Instance / Object Property / VT7200C5x00W / VT7200F5x00W
Stand-by Cool Setpoint / AV 56 / (R,W) /  /  / AV xx / (R,W) /  / 
Unoccupied Heat Setpoint / AV 53 / (R,W) /  /  / AV xx / (R,W) /  / 
Unoccupied Cool Setpoint / AV 54 / (R,W) /  /  / AV xx / (R,W) /  / 
Keypad Lockout / MV 42 / (R,W) /  /  / MV xx / (R,W) /  / 
General Options 1 / GRP 16 / (R) /  / 
BI 1 Configuration / MV 17 / (R,W) /  / 
BI 2 Configuration / MV 18 / (R,W) /  / 
UI 3 configuration / MV 19 / (R,W) /  / 
Menu Scroll / BV 20 / (R,W) /  / 
Temperature Scale / BV 22 / (R,W) /  / 
Out#1 Config / MV 23 / (R,W) /  / 
AUX Configuration / MV 25 / (R,W) /  / 
General Options 2 / GRP 26 / (R) /  / 
Heating Setpoint Limit / AV 28 / (R,W) /  / 
Cooling Setpoint Limit / AV 29 / (R,W) /  / 
Setpoint Type / BV 30 / (R,W) /  / 
Temporary Occupancy Time / MV 31 / (R,W) /  / 
Deadband / AV 32 / (R,W) /  / 
Reheat Time Base / BV 33 / (R,W) /  / 
Stand-by Time / AV 34 / (R,W) /  / 
Unoccupied Time / AV 35 / (R,W) /  / 
Output Options / GRP 36 / (R) /  / 
Control type / BV 37 / (R,W) / 
Floating Motor timing / MV 38 / (R,W) / 
On Off Control CPH / MV 39 / (R,W) / 
Direct Reverse Acting / BV 40 / (R,W) / 

ECHELON LONWORKS COMMUNICATING MODEL

SNVTs1 and SCPTs2 Table Per Model

No / Sub / Point Name / VT7200C5000B / VT7200F5000B
0 / nviSpaceTemp / X / X
1 / nviOutdoorTemp / X / X
2 / nviSetpoint / X / X
3 / nviSpaceRH / N/A / N/A
4 / nviFanSpeedCmd / N/A / N/A
5 / nviAuxHeatEnable / X / X
6 / nviOccManCmd / X / X
7 / nviApplicMode / X / X
8 / nviHeatCool / X / X
9 / nviRemLockout / X / X
10 / nviDhumiLCK / N/A / N/A
11 / nviAuxOut / X / X
12 / nvoSpaceTemp / X / X
13 / nvoDischAirTemp / X / X
14 / nvoSpaceRH / N/A / N/A
15 / nvoEffectOccup / X / X
16 / nvoUnitStatus / X / X
1 / mode / x / x
2 / heat_output_primary / x / x
4 / cool_output / x / x
6 / fan_output / N/A / N/A
7 / in_alarm / x / x
17 / nvoSccStatus / X / X
1 / StateTerminal BO2 / x / N/A
2 / StateTerminal BO1 / x / N/A
3 / StateTerminal BO4 / x / N/A
4 / StateTerminal BO3 / x / N/A
5 / StateTerminal BO5 / x / x
6 / FanLow / N/A / N/A
7 / FanMed / N/A / N/A
8 / FanHigh / N/A / N/A
9 / UI 3 Status / x / x
10 / BI 2 Status / x / x
11 / BI1 Status / x / x
12 / Local PIR Motion / x / x
13 / Service Alarm / x / x
14 / Filter Alarm / x / x
15 / Window Opened / x / x
16 / Dehumidification Active / N/A / N/A
18 / nvoTerminalLoad / X / X
No / Sub / Point Name / VT7200C5000B / VT7200F5000B
19 / nciSetPts / X / X
1 / occupied_cool / x / x
2 / standby_cool / x / x
3 / unoccupied_cool / x / x
4 / occupied_heat / x / x
5 / standby_heat / x / x
6 / unoccupied_heat / x / x
20 / nciRHmodel / N/A / N/A
1 / RHdisplay / N/A / N/A
2 / RHsetpoint / N/A / N/A
3 / DehumHyst / N/A / N/A
4 / DehumCool / N/A / N/A
5 / RHcalib / N/A / N/A
21 / nciGenOpt / X / X
1 / Control Type / x / N/A
2 / Drive Time / x / N/A
3 / Cycles Per Hour / x / N/A
4 / Reverse Acting Output / N/A / x
5 / BI1 / x / x
6 / BI2 / x / x
7 / UI3 / x / x
8 / Menu Scroll / x / x
9 / Auto Mode / x / x
10 / Temperature Scale / x / x
11 / Main out config / x / x
12 / Sequence of Operation / x / x
13 / Fan Menu Sequence / N/A / N/A
14 / Heat Maximum setpoint / x / x
15 / Cool Minimum setpoint / x / x
16 / SetpointType / x / x
17 / Temporary Occ Time / x / x
18 / Deadband / x / x
19 / Calibration Room Sensor / x / x
20 / Auxiliary Contact Config / x / x
21 / Reheat Time Base / x / x
22 / Fan Mode / N/A / N/A
23 / PIR Stand-By Timer / x / x
24 / PIR Unoccupied Timer / x / x
22 / nciSccModel / X / X
1 / Thermostat Model / x / x
2 / Software Version / x / x
23 / nciHvacType / X / X
24 / nciSndHrtBt / X / X
25 / nciMinOutTm / X / X
26 / nciRcvHrtBt / X / X
27 / nciMajVer / X / X
28 / nciMinVer / X / X

Document #028-8017-R00