Viconics VT7000 Application Guide

PIR Application Guide for the for VT7xxxX5000(X) Series thermostats

( Issue Date: November 5, 2007 – 028-xxxx Rx )

Product Overview

The VI-PIR Accessory covers with embedded Passive Infra-Red motion detector have been specifically designed to work with all compatible VT7000 series thermostats. Thermostats compatible with VI-PIR covers use the following part number assignments: VT7xxxxX5xxx(X). The 5 identifies the thermostat base thermostat has the necessary onboard polarized PIR connector and functionality added.

When equipped with a VI-PIR accessory cover or a remote PIR sensor attached to one of the remote input, a VT7000 series thermostat provides advanced active occupancy logic, which will automatically switches occupancy levels from Occupied to Stand-By and Unoccupied as required by local activity being present or not.

This advanced occupancy functionality provides advantageous energy savings during occupied hours without sacrificing occupant comfort.

The range of applications covered with the PIR occupancy logic van be segmented in 2 important categories in terms of functionality. Both use different settings and have different behaviours:

• Hotel and lodging applications

• Standard commercial applications

Typical applications that can be meet by the new PIR accessory covers range from:

• Stand-alone lodging FCU applications

• Networks lodging FCU applications fully integrated to a reservation system

• Networked or stand-alone conference rooms

• Networked or stand-alone classrooms units

• Any commercial offices that have random occupancy schedules during occupied hours as dictated by the

function of the tenant

• Or any controlled piece of HVAC equipment that may yield energy savings with the introduction of a new

automatic stand-by level of occupancy.

The additional following documentation is available on www.viconics.com

• Detailed information on VT7200 series thermostat configuration, is available on document: LIT-VT7200-Exx

• Integration information on VT7200 LON models, is available on document: ITG-VT7200-LON-Exx.doc

• Integration information on VT7200 BACnet models, is available on document: ITG-VT7200-BAC-Exx.doc

• Detailed information on VT7300 series thermostat configuration, is available on document: LIT-VT7300-Exx

• Integration information on VT7300 LON models, is available on document: ITG-VT7300-LON-Exx.doc

• Integration information on VT7300 BACnet models, is available on document: ITG-VT7300-BAC-Exx.doc

VI- PIR Cover Models Available

Viconics PIR Cover Part Number

Description

Compatible with the

Following Thermostats

COV-PIR-FCU-C-5000 PIR cover with Commercial FCU interface VT73x0X50xx(X) COV-PIR-FCU-L-5000 PIR cover with Hotel/Lodging interface VT73x5X50xx(X) COV-PIR-HPUMP-5000 PIR cover for heat pump thermostats VT76xxH50xx(X)x COV-PIR-RTU-5000 PIR cover for roof-top thermostats VT76xxX50xx(X) COV-PIR-ZN-5000 PIR cover for zoning thermostats VT7200X50xx(X)

10/16/07 028-6012

PIR Application Guide-E00.doc

www.viconics.com

sales@viconics.com

Configuration Parameters Associated with the Viconics PIR Accessory Covers

The following configuration parameters are specifically provided as standard on all VT7000 series thermostats. They are associated with the advanced occupancy functionality introduced with the addition of a PIR cover or a remote PIR sensor. These parameters will allow the installer to set the thermostat occupancy functions exactly as required by the application.

Their functionality only becomes active if a PIR accessory cover is connected or one of the binary/digital input is configured to use a remote PIR sensing device.

Configuration Parameter Description of Configuration parameter

It is possible to configure some of the digital or binary inputs to effectively use the advanced functions allowed by the installation of a door switch contact.

BI or DI input door setting

This function is mostly used with fan coil units in lodging applications

Default: None for no function used

When a door contact is used and configured, the Stand-By timer is no longer active. The occupancy toggle between occupied and stand-by is now dictated by both the door contact and the PIR cover.

• Movement detected by the PIR cover = Always occupied

• Door opens / closes detected by the door switch = Stand-by mode

This parameter sets the stand-by heating setpoint value.

Stand-by Heating Set point:

The set value of this parameter should reside between the occupied and unoccupied heating setpoints and make sure that the difference between the stand-by and occupied value can be recovered in a timely fashion when

Default: 69 °F ( 20.5 °C )

movement is detected in the zone. Adjustable from 40 to 90 °F ( 4.5 to 32 °C ) in 0.5 degree increments.

This parameter sets the stand-by cooling setpoint value.

Stand-by Cooling Set point:

The set value of this parameter should reside between the occupied and unoccupied cooling setpoints and make sure that the difference between the stand-by and occupied value can be recovered in a timely fashion when

Default: 78 °F ( 25.5 °C )

movement is detected in the zone. Adjustable from 54 to 100 °F ( 12.2 to 37.8 °C ) in 0.5 degree increments.

Stand-by Time:

This parameter sets the time delay between the moment where the PIR cover detected the last movement in the area and the time which the thermostat

Default 0.5 hours

stand-by mode and setpoints become active. Adjustable from 0.5 to 24 hours in .5hr increments

Unoccupied Time:

Default 0.0 hours

If no movement are detected in the area and the current mode is stand-by. This parameter will then set the time delay between the moment where the thermostat toggles to stand-by mode and the time which the thermostat unoccupied mode and setpoints become active.

The factory value or 0.0 hours: Setting this parameter to its default value of

0.0 hours disables the unoccupied timer. This prevents the thermostat to drift from stand-by mode to unoccupied mode when PIR functions are used

Adjustable from 0.0 to 24 hours in .5hr increments

Important Notes and Things to Know

When reviewing the following document and planning an application using a Viconics thermostat with PIR functionality, please remember the important following notes:

• Configuration of PIR Functions: All PIR application related configuration parameters are displayed in the

configuration menu or available as objects in the network object list. However, the advanced occupancy functionality of a PIR attached to a thermostat is only enabled if either:

- A Viconics VI-PIR cover is installed on the thermostat

- A remote input is configured as a remote PIR sensor ( Motion NO or Motion NC )

• PIR Cover Warm-Up Period: When VI-PIR accessory cover is used and a thermostat is powered up; there will be a

1 minute warm up period before any local movements can being detected and acknowledged by the PIR sensing device. The local status LEDs for the VI-PIR cover will also not be active during that one minute period.

Only when that 1 minute period has elapsed after initial power up of the thermostat will the PIR functionality and local movement status LEDs be activated.

• Setpoints: The implemented stand-by setpoints are under the same limitations and restrictions as the occupied and

unoccupied ones. This means that:

- They use exactly the same range:

• Heating setpoints range are: 40 to 90 °F ( 4.5 to 32.0 °C )

• Cooling setpoints range are: 54 to 100 °F ( 12.0 to 37.5 °C )

- They are always limited by the applied minimum deadband configuration

- They will be limited by the Heat Maximum and Cool Minimum configuration parameters

All individual cooling setpoints and all individual heating setpoints can be set independently. However, A typical arrangement will always have the set value of the stand-by parameters residing between the corresponding occupied and unoccupied setpoint values.

The installer must make sure that the difference between the stand-by and occupied value can be recovered in a timely fashion when movement is detected in the zone and large enough to warrant maximum energy savings.

Ex.:

Unocc Heat

= 65F

St-By Heat

= 69F

Deadband

Occ Heat

= 72F

Occ Cool

= 75F

St-By Cool

= 78F

Unocc Cool

= 82F

Room Temperature

• Application Range: The range of applications covered with the PIR occupancy logic van be segmented in 2

important categories in terms of functionality. Both use different settings and have different behaviours:

- Hotel and lodging applications

- Standard commercial applications

Hotel and Lodging Applications can benefit the addition of an entry door switch wired to one of the appropriately configured remote input of a thermostat.

When a door contact is used and configured, the Stand-By timer and its configuration are no longer active or used. The occupancy front toggle between occupied and stand-by is now simply dictated by both the door contact and the PIR sensing device used.

If movements are detected by the PIR cover, the room will always be occupied. The switch back to stand-by mode will only happen if the door switch toggles open / close. Please review attached lodging application examples in the document for more information

Standard Commercial Applications would not typically use a remote door switch contact attached to the thermostat.

PIR occupancy functionality is simply dictated by both the Stand-By Timer and Unoccupied Timer configuration value and movements being present or not in the area. Please review attached typical commercial application examples in the document for more information

• Unoccupied Timer Disable: In certain application cases, it may be desired to never let the local area enter the

unoccupied mode and always stay at the stand-by occupancy level when no activity is present. This allows for advanced flexibility when used in conjunction with a network or in cases when areas always need to

be on stand-by status ready to respond to demand at any point in time.

Occupied

Stand-By

Unoccupîed

Last Movement Detected

Unoccupied timer set 6 Hours and stand-by timer set to 2 hours

Stand-By Time

= 2 Hours

Unoccupied Time

= 6 Hours

Time

Unoccupied Time Elapsed

= Unoccupied Mode

Last Movement Detecte d

by PIR Activity

Stand-By Time Elapsed = Stand-By Mode

Stand-By Time

= 2 Hours

Unoccupied Time

= 6 Hours

Stand-By Time Elapsed = Stand-By Mode

Time

When the local PIR occupancy routine is running at the thermostat, the zone will drift into unoccupied mode when the unoccupied timer is set above

its factory default value of 0.0 hours

Occupied

Stand-By

Unoccupîed

Last Movement Detected

Unoccupied timer set 0 Hours and stand-by timer set to 2 hours

Stand-By Time

= 2 Hours

Unoccupied Time

= 0 Hours

Time

Last Movement Detect ed

by PIR Activity

Stand-By Time Elapsed = Stand-By Mode

Stand-By Time

= 2 Hours

Unoccupied Time

= 0 Hours

Stand-By Time Elapsed = Stand-By Mode

Time

When the local PIR occupancy routine is running at the thermostat, the zone will never drift into unoccupied mode when the unoccupied timer is set to its factory default value of 0.0 hours

• Network Priority and Local Occupancy Routine:

The internal PIR occupancy logic implementation in conjunction with network commands has been conceived to give the most flexibility while allowing for simple implementation and use.

Network Occupancy Commands: All VT700 series thermostat have 3 occupancy command levels. This is valid for all network variations available for the thermostats: LON, BACnet-MS-TP or Wireless.

The 3 levels occupancy state level commands are:

State Occupancy

Function

Command Levels

Local occupancy

- Releases the thermostat to its own occupancy schemes

- This may be a PIR sensing device, a local schedule or an occupancy routine done by

one of the digital input

- This state command level is used to effectively release the thermostat to use the PIR functions

Occupied

- Leaves the thermostat in occupied mode and cancels any local occupancy functions, including the PIR occupancy routine

- This state command level is used to force the zone to be always occupied

Unoccupied

- Leaves the thermostat in unoccupied mode and cancels any local occupancy functions, including the PIR occupancy routine

- This state command level is used to force the zone to be always unoccupied.

- The only local possible command is a local override if the thermostat is equipped with

such an option or if the local keypad lockout allows so

Stand-by is never a commandable level. It only exists as a feedback status level.

Network Occupancy Feedback Status: All VT700 series thermostats have 4 occupancy feedback levels. This is valid for all network variations available for the thermostats: LON, BACnet-MS-TP or Wireless.

State Occupancy

Function

Command Levels

Override / By-Pass Indicates that the zone is currently local occupied override mode from the unoccupied

state This function will operate like a normal local override and its time value is as dictated

by the ToccTime configuration parameter setting

Occupied Indicates that the zone is currently occupied

This effective feedback state may be driven by a local occupancy routine like a PIR sensor or by an occupied network command

Stand-By Indicates that the zone is currently in stand-by mode

This effective feedback state can only

be driven by a local PIR occupancy routine

Unoccupied Indicates that the zone is currently unoccupied

This effective feedback state may be driven by a local occupancy routine like a PIR sensor or by an unoccupied network command

1) BACnet Object Used for Occupancy Commands and Feedback

Object Name Object ID BACnet Index Text

1 Occupied

Occupancy Command

MV xx

2 Unoccupied 3 Local Occupancy ( PIR or Internal Schedule ) 1 Occupied

Effective Occupancy

MV xx

2 Unoccupied 3 Temporary Occupied 4 Stand-By

2) LON Snivets Used for Occupancy Commands and Feedback

Snivet Name Notes and Indexes

network input SNVT_occupancy

nviOccCmd

 Default Null Value: OC_NUL = 0xFF Releases the thermostat to its internal

Occupancy function: Internal scheduling, PIR, etc….

 Valid Range:

0 = OC_OCCUPIED 1 = OC_UNOCCUPIED 2 = OC_BYPASS – Not Used 3 = OC_STANDY – Not Used 0xFF = OC_NUL (Release to PIR or internal schedule)

network output SNVT_occupancy

nvoEffectOccup

 This output network variable is used to indicate the actual occupancy mode of the

unit. This information is typically reported to a supervisory controller or provided to another Space Comfort Controller to coordinate the operation of multiple units

 Valid Range:

0 = OC_OCCUPIED 1 = OC_UNOCCUPIED 2 = OC_BYPASS1 3 = OC_STANDBY

Note 1: OC_BYPASS can be initiated by local override. NvoEffectOccup will only be in OC_BYPASS for the duration of the ToccTime (nciGenOpts), until reinitiated by either a transition of the local input or an update to nviOccManCmd.

• Initial State, PIR Occupancy Routine: The initial effective occupancy state on power-up with either a PIR cover is

present or one of the inputs is configured for a remote PIR sensor is always Stand-By mode. When the network effectively releases a thermostat to its local PIR routine from a previous occupied or unoccupied

network state, the resulting occupancy state is always Stand-By mode

Initial Power-Up, Stand-Alone or Networked

Occupied

Stand-By Time

= 2 Hours

Stand-By

Unoccupied Time

= 6 Hours

Unoccupîed

Initial State a t

Power-Up = Stand-By

First Movement Detected

After Receiving the Local Occupancy / PIR

Occupied

Stand-By

Unoccupîed

Current Network

Command = Unoccupied

Initial S ta t e a t

Local Occupancy

Network Command

= Stand-By

After Receiving the Local Occupancy / PIR

Occupied

Stand-By

Unoccupîed

by the PIR Cover

Stand-By Time

= 2 Hours

First Movement Detecte d by the PIR Cover

Stand-By Time

= 2 Hours

Stand-By Time Elapsed = Stand-By Mode

Time

Stand-By Time Elapsed = Stand-By Mode

Time

Unoccupied Time Elapsed = Unoccupied Mode

Network Command From a Previous Unoccupied State

Unoccupied Time

= 6 Hours

Unoccupied Time Elapsed = Unoccupied Mode

Network Command From a Previous Occupied State

Unoccupie d Time

= 6 Hours

Current Network

Command = Occupied

Initial State at

Local Occupancy

Network Command

= Stand-By

Stand-By Time Elapsed = Stand-By Mode

First Movement Detected by the PIR Cover

Time

Unoccupied Time Elapsed = Unoccupied Mod e

Typical Commercial Applications+

Commercial Applications

Application

Number

PIR Levels of

Occupancy

PIR Cover

Used

Remote PIR

used

Network interface

1 3 Yes No None, stand-alone 2 2 Yes No None, stand-alone 3 3 No Yes None, stand-alone 4 2 No Yes None, stand-alone 5 3 Yes Yes None, stand-alone 6 2 Yes Yes None, stand-alone 7 3 Yes No Yes, LON or BACnet 8 2 Yes No Yes, LON or BACnet 9 3 No Yes Yes, LON or BACnet 10 2 No Yes Yes, LON or BACnet 11 3 Yes Yes Yes, LON or BACnet 12 2 Yes Yes Yes, LON or BACnet

Lodging Applications

Application

Number

PIR Levels of

Occupancy

PIR Cover

Used

Remote PIR

used

Network interface

13 3 Yes No None, stand-alone 14 2 Yes No None, stand-alone 15 3 No Yes None, stand-alone 16 2 No Yes None, stand-alone 17 3 Yes Yes None, stand-alone 18 2 Yes Yes None, stand-alone 19 3 Yes No Yes, LON or BACnet 20 2 Yes No Yes, LON or BACnet 21 3 No Yes Yes, LON or BACnet 22 2 No Yes Yes, LON or BACnet 23 3 Yes Yes Yes, LON or BACnet 24 2 Yes Yes Yes, LON or BACnet

Advanced network interface can be obtained when thermostats are fully integrated to the reservation system In these cases, the occupancy network commands state enumerations text presented by a front end system can be expanded

to better represent the nature of the application.

Occupancy network commands state Front end system state text examples

Local Occupancy ( PIR active ) Room rented PIR economy enabled Occupied Room rented high comfort assured Unoccupied Room not rented

• 1) VT7300 Stand-alone fan coil application using 3 levels of occupancy with a VI-PIR accessory cover

Set-up and Configuration

Thermostat used VT73x0X5000 ( commercial models ) PIR used COV-PIR-FCU-C-5000 accessory cover BI2 Configuration None, no function Stand-by timer value 2.0 hours Unoccupied timer value 6.0 hours Network interface used None, stand-alone

Sequence of operation:

Occupied

Stand-By

Unoccupîed

Initial St a te at

Power-Up = Stand-By

Stand-By Tim e

= 2 Hours

First Movement Detected

by the PIR Cover

Stand-By Time Elapsed

Time

= Stand-By Mode

Unoccupied Time

= 6 Hours

Unoccupied Time Elapsed = Unoccupied Mode

At initial power-up, when the thermostat 24 Vac power supply is applied; the initial occupancy of the zone will be stand-by mode if the PIR device do not detect any movements.

As soon as the PIR device detects a movement or motion, the occupancy status switches to occupied and the occupied setpoints are used.

Anytime the PIR device detects local motion, the elapsed stand-by timer value will be reset. If no motion is detected in the zone for the entire stand-by timer duration, then the room switches to stand-by mode and the stand-by setpoints are used.

While in stand-by mode, if no motion is detected in the zone for the entire unoccupied timer duration, then the room switches to unoccupied mode and the unoccupied setpoints are used.

At anytime, if the PIR device detects a local movement or motion, the occupancy status switches to occupied and the occupied setpoints are used.

• 2) VT7300 Stand-alone fan coil application using 2 levels of occupancy with a VI-PIR accessory cover

Set-up and Configuration

Sequence of operation:

Occupied

Stand-By Time

= 2 Hours

Unoccupied Time

= 0 Hours

Stand-By Time Elapsed = Stand-By Mode

Time

Stand-By

Unoccupîed

Initial State at

Power-Up = Stand-By

First Movement Detected

by the PIR Cover

Stand-By Time

= 2 Hours

Stand-By Time Elapsed = Stand-By Mode

Time

Unoccupied Time

= 0 Hours

Last Movement Detected

by PIR Activity

At initial power-up, when the thermostat 24 Vac power supply is applied; the initial occupancy of the zone will be stand-by mode if the PIR device do not detect any movements.

As soon as the PIR device detects a movement or motion, the occupancy status switches to occupied and the occupied setpoints are used.

At anytime, if the PIR device detects a local movement or motion, the occupancy status switches to occupied and the occupied setpoints are used.

The local zone never goes into unoccupied mode and the unoccupied setpoints are never used.

• 3) VT7300 Stand-alone fan coil application using 3 levels of occupancy with a remote PIR sensor

Set-up and Configuration

Thermostat used VT73x0X5000 ( commercial models ) PIR used BI1 configured for remote PIR sensor BI2 Configuration None, no function Stand-by timer value 2.0 hours Unoccupied timer value 6.0 hours Network interface used None, stand-alone

Remote PIR Sensor

Sequence of operation:

Occupied

Unoccupîed

Initial State at

Power-Up = Stand-By

Stand-By

First Movement Detected

Stand-By Time

= 2 Hours

by a PIR Device

Stand-By Time Elapsed = Stand-By Mode

Unoccupied Time

Time

= 6 Hours

Unoccupied Time Elapsed = Unoccupied Mode

At initial power-up, when the thermostat 24 Vac power supply is applied; the initial occupancy of the zone will be stand-by mode if the PIR device do not detect any movements.

As soon as the PIR device detects a movement or motion, the occupancy status switches to occupied and the occupied setpoints are used.

While in stand-by mode, if no motion is detected in the zone for the entire unoccupied timer duration, then the room switches to unoccupied mode and the unoccupied setpoints are used.

At anytime, if the PIR device detects a local movement or motion, the occupancy status switches to occupied and the occupied setpoints are used.

• 4) VT7300 Stand-alone fan coil application using 2 levels of occupancy with a remote PIR sensor

Set-up and Configuration

Remote PIR Sensor

Sequence of operation:

Occupied

Power-Up = Stand-By

First Movement Detected

Unoccupîed

Initial State at

Stand-By

by a PIR Device

Stand-By Time

= 2 Hours

Stand-By Time Elapsed = Stand-By Mode

Time

Unoccupied Time

= 0 Hours

Last Movement Detected

by PIR Activity

Stand-By Time

= 2 Hours

Unoccupied Time

= 0 Hours

Stand-By Time Elapsed = Stand-By Mode

Time

At initial power-up, when the thermostat 24 Vac power supply is applied; the initial occupancy of the zone will be stand-by mode if the PIR device do not detect any movements.

As soon as the PIR device detects a movement or motion, the occupancy status switches to occupied and the occupied setpoints are used.

At anytime, if the PIR device detects a local movement or motion, the occupancy status switches to occupied and the occupied setpoints are used.

The local zone never goes into unoccupied mode and the unoccupied setpoints are never used.

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Viconics VT7000 Application Guide

Specifications and Main Features

Frequently Asked Questions

User Manual