VT7000
1
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
2
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
BI or DI input door setting
Default: None for no function used
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.
This function is mostly used with fan coil units in lodging applications
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
Stand-by Heating Set point:
Default: 69 °F ( 20.5 °C )
This parameter sets the stand-by heating setpoint value.
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
movement is detected in the zone.
Adjustable from 40 to 90 °F ( 4.5 to 32 °C ) in 0.5 degree increments.
Stand-by Cooling Set point:
Default: 78 °F ( 25.5 °C )
This parameter sets the stand-by cooling setpoint value.
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
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:
Default 0.5 hours
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
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
3
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.:
• 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
Occ Heat
= 72F
Occ Cool
= 75F
St-By Heat
= 69F
Unocc Heat
= 65F
St-By Cool
= 78F
Unocc Cool
= 82F
Room Temperature
Deadband
4
• 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.
Unoccupied timer set 6 Hours and stand-by timer set to 2 hours
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
Unoccupied timer set 0 Hours and stand-by timer set to 2 hours
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
Command Levels
Function
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.
Unoccupied Time
= 6 Hours
Stand-By Time
= 2 Hours
Occupied
Stand-By
Unoccupîed
Time
Stand-By Time Elapsed
= Stand-By Mode
Unoccupied Time Elapsed
= Unoccupied Mode
Last Movement Detecte d
by PIR Activity
Time
Stand-By Time Elapsed
= Stand-By Mode
Stand-By Time
= 2 Hours
Last Movement Detected
by PIR Activity
Unoccupied Time
= 6 Hours
Unoccupied Time
= 0 Hours
Stand-By Time
= 2 Hours
Occupied
Stand-By
Unoccupîed
Time
Stand-By Time Elapsed
= Stand-By Mode
Last Movement Detect ed
by PIR Activity
Time
Stand-By Time Elapsed
= Stand-By Mode
Stand-By Time
= 2 Hours
Last Movement Detected
by PIR Activity
Unoccupied Time
= 0 Hours
5
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
Command Levels
Function
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
2 Unoccupied
Occupancy
Command
MV xx
3 Local Occupancy ( PIR or Internal Schedule )
1 Occupied
2 Unoccupied
3 Temporary Occupied
Effective
Occupancy
MV xx
4 Stand-By
2) LON Snivets Used for Occupancy Commands and Feedback
Snivet Name Notes and Indexes
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
network input
SNVT_occupancy
nviOccCmd
0xFF = OC_NUL (Release to PIR or internal schedule)
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_BYPASS
1
network output
SNVT_occupancy
nvoEffectOccup
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.
6
• 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
After Receiving the Local Occupancy / PIR
Network Command From a Previous Unoccupied State
After Receiving the Local Occupancy / PIR
Network Command From a Previous Occupied State
Unoccupied Time
= 6 Hours
Stand-By Time
= 2 Hours
First Movement Detected
by the PIR Cover
Occupied
Stand-By
Unoccupîed
Time
Stand-By Time Elapsed
= Stand-By Mode
Unoccupied Time Elapsed
= Unoccupied Mode
Initial State a t
Power-Up = Stand-By
Unoccupied Time
= 6 Hours
Stand-By Time
= 2 Hours
First Movement Detecte d
by the PIR Cover
Occupied
Stand-By
Unoccupîed
Time
Stand-By Time Elapsed
= Stand-By Mode
Unoccupied Time Elapsed
= Unoccupied Mode
Initial S ta t e a t
Local Occupancy
Network Command
= Stand-By
Current Network
Command = Unoccupied
Unoccupie d Time
= 6 Hours
Stand-By Time
= 2 Hours
First Movement Detected
by the PIR Cover
Occupied
Stand-By
Unoccupîed
Time
Stand-By Time Elapsed
= Stand-By Mode
Unoccupied Time Elapsed
= Unoccupied Mod e
Initial State at
Local Occupancy
Network Command
= Stand-By
Current Network
Command = Occupied
7
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
8
• 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:
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
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 0.0 hours
Network interface used None, stand-alone
Sequence of operation:
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.
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.
Unoccupied Time
= 6 Hours
Stand-By Tim e
= 2 Hours
First Movement Detected
by the PIR Cover
Occupied
Stand-By
Unoccupîed
Time
Stand-By Time Elapsed
= Stand-By Mode
Unoccupied Time Elapsed
= Unoccupied Mode
Initial St a te at
Power-Up = Stand-By
Unoccupied Time
= 0 Hours
Stand-By Time
= 2 Hours
Occupied
Stand-By
Unoccupîed
Time
Stand-By Time Elapsed
= Stand-By Mode
Last Movement Detected
by PIR Activity
Time
Stand-By Time Elapsed
= Stand-By Mode
Stand-By Time
= 2 Hours
Unoccupied Time
= 0 Hours
First Movement Detected
by the PIR Cover
Initial State at
Power-Up = Stand-By
9
• 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
Sequence of operation:
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.
• 4) VT7300 Stand-alone fan coil application using 2 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 0.0 hours
Network interface used None, stand-alone
Sequence of operation:
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.
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.
Remote PIR Sensor
Remote PIR Sensor
Unoccupied Time
= 6 Hours
Stand-By Time
= 2 Hours
First Movement Detected
by a PIR Device
Occupied
Stand-By
Unoccupîed
Time
Stand-By Time Elapsed
= Stand-By Mode
Unoccupied Time Elapsed
= Unoccupied Mode
Initial State at
Power-Up = Stand-By
Unoccupied Time
= 0 Hours
Stand-By Time
= 2 Hours
Occupied
Stand-By
Unoccupîed
Time
Stand-By Time Elapsed
= Stand-By Mode
Last Movement Detected
by PIR Activity
Time
Stand-By Time Elapsed
= Stand-By Mode
Stand-By Time
= 2 Hours
Unoccupied Time
= 0 Hours
First Movement Detected
by a PIR Device
Initial State at
Power-Up = Stand-By
Loading...