MSA BVC-650 User manual

Operating Manual
BVC-650 Ventilation Controller
Temperature Based Demand Control Ventilation
Order No.: H3015-6350/00
Print Spec: 10000005389 (A)
CR: 800000057184
MSAsafety.com
US

© MSA 2022. All rights reserved
WARNING!
These instructions must be provided to users before use of the product and retained for ready reference by the user. Read this
manual carefully before using or maintaining the device. The device will perform as designed only if it is used and maintained in
accordance with the manufacturer's instructions. Otherwise, it could fail to perform as designed, and persons who rely on this
device could sustain serious injury or death.
The warranties made by MSA with respect to the product are voided if the product is not installed and used in accordance with
this manual and the Installation Instructions (P/N H3015-6360). This product should only be installed by a trained professional
or certified electrician.
Please read and observe the WARNINGS and CAUTIONS inside.
WARNING!
Ensure trained professionals who will be installing, using, or maintaining this device have access to the user manual. If
electronic access to the user manual is not possible, print a copy of the manual and keep it in an accessible location near the
device.
Failure to obey the following guidelines and/or incorrect installation, operation, servicing, or maintenance of the device can
cause incorrect operation of the device possibly resulting in serious injury or death.
1000 Cranberry Woods Drive
Cranberry Township, PA 16066
USA
Phone 1-800-MSA-2222
Fax [phone]

US BVC-650 Ventilation Controller 3
Contents
1 SafetyInformation 4
1.1 Warranty Statement 4
2 ProductIntroduction 5
2.1 Kit Part Numbers 5
3 Installation 6
3.1 Typical Location 6
3.2 Mounting 6
3.3 Power Board Connections Overview 6
3.4 Display Board Overview / Configuration 8
3.5 BMS Modbus - Wiring 9
3.6 BMS Modbus - 120ohm Termination Wiring Resistance 9
3.7 Configuration and Modbus RTU Data Points 9
3.8 Access System Configuration Settings 11
3.9 System Configuration Options 11
3.10 Manual Timer Configuration: Date & Time 15
3.11 Manual Timer Configuration: Auto On/Off Setup 15
3.12 Modbus Timer Configuration: Date & Time 16
3.13 Day Off Setup 17
3.14 Fan Override 17
3.15 Timer Configuration: Date & Time 17
3.16 Factory Set Timer 18
3.17 Factory Set Condition 18
4 Operation 19
4.1 First Power Up / Main Screen 19
4.2 Diagnostic Screen 19
4.3 Boost & Boost Overrun (Maximum Ventilation Output) 19
4.4 Fire Panel Alarm 20
4.5 Fan Override 20
4.6 Fault Condition 20
5 Maintenance 20
5.1 Cleaning 20
6 TechnicalSpecification 21

4 BVC-650 Ventilation Controller US
1 Safety Information
1 SafetyInformation
WARNING!
• Please read these instructions carefully and have easily accessible for the operation of the product.
• The information contained within this manual should be referenced for typical installation and operation only.
• For site specific requirements that may deviate from the information in this guide – contact MSA. If the equipment is
used in a manner not specified by the manufacturer, the safety/protection provided by the equipment may be
impaired.
• This device is designed for indoor operation only.
• Never ignore the device when in alarm or displays a fault condition.
• This device requires a continual supply of electrical power – it will not work without power.
• This device is not a substitute for proper installation, use and/or maintenance of fuel burning appliances including
appropriate ventilation and exhaust systems.
• The device is not intended for use in potentially explosive atmospheres.
• This device is not a fire suppression or safety system. Fire suppression or safety systems must be used as the
primary safety system for fire and smoke alarms.
Failuretofollowthesewarningscanresultinseriouspersonalinjuryordeath.
InformationonWasteDisposalforConsumersofElectrical&ElectronicEquipment:
When this product has reached the end of its life, treat as Waste Electrical & Electronics Equipment (WEEE).
Any WEEE marked products must not be mixed with general household waste, but kept separate for the
treatment, recovery and recycling of the materials used. Please contact your supplier or local authority for
details of recycling schemes in your area.
1.1 WarrantyStatement
MSA, the Safety Company, warrants that these products will be free from mechanical defect or faulty workmanship for a
period of three (3) years from the date of delivery, provided it is maintained and used in accordance with MSA's instructions
and/or recommendations.
This warranty does not apply to expendable or consumable parts whose normal life expectancy is less than three (3) year,
such as, but not limited to, nonrechargeable batteries, filament units, filter, lamps, fuses, etc. MSA shall be released from
all obligations under this warranty in the event that repairs or modifications are made by persons other than its own or
authorized service personnel or if the warranty claim results from physical abuse or misuse of the product. No agent,
employee, or representative of MSA has any authority to bind MSA to any affirmation, representation, or warranty
concerning the goods sold under this contract. MSA makes no warranty concerning components or accessories not
manufactured by MSA, but will pass on to the Purchaser all warranties of manufacturers of such components.
THISWARRANTYISINLIEUOFALLOTHERWARRANTIES,EXPRESSED,IMPLIED,ORSTATUTORY,ANDIS
STRICTLYLIMITEDTOTHETERMSHEREOF.SELLERSPECIFICALLYDISCLAIMSANYWARRANTYOF
MERCHANTABILITYOROFFITNESSFORAPARTICULARPURPOSE.
ExclusiveRemedy
It is expressly agreed that the Purchaser's sole and exclusive remedy for breach of the above warranty, for any tortious
conduct of the Seller, or for any other cause of action, shall be the repair and/or replacement at the Seller's option of any
equipment or parts thereof, which after examination by the Seller is proven to be defective. Replacement equipment and/or
parts will be provided at no cost to the Purchaser, F.O.B. Seller's Plant. Failure of the Seller to successfully repair any
nonconforming product shall not cause the remedy established hereby to fail of its essential purpose.
ExclusionofConsequentialDamage
The Purchaser specifically understands and agrees that under no circumstances will the Seller be liable to the Purchaser
for economic, special, incidental, or consequential damages or losses of any kind whatsoever, including but not limited to,

2 Product Introduction
US BVC-650 Ventilation Controller 5
loss of anticipated profits and any other loss caused by reason of nonoperation of the goods. This exclusion is applicable to
claims for breach of warranty, tortious conduct, or any other cause of action against the Seller.
LiabilityInformation
MSA accepts no liability in cases where the device has been used inappropriately or not as intended. The selection and
use of the device are the exclusive responsibility of the individual operator. Product liability claims, warranties, and
guarantees made by MSA with respect to the device are voided if the device is not operated, serviced, and/or maintained in
accordance with the instructions in this manual.
The warranties made by MSA with respect to the product are voided if the product is not used and serviced in accordance
with the instructions in this manual. Please protect yourself and others by following them. We encourage our customers to
write or call regarding this equipment prior to use or for any additional information relative to use or repairs.
2 ProductIntroduction
MSA's BVC-650 Control System has been specifically designed for new and retrofit Quick Serve Restaurant and Kitchen
applications, providing automated control over the ventilation system by adjusting exhaust and kitchen HVAC inlet air in
response to the presence and level of cooking activity.
Based on the temperature inside the exhaust hoods, the BVC-650 Control System maximizes kitchen ventilation energy
efficiency and reduces energy waste while improving kitchen comfort. Stores are running industrial exhaust fans
continuously throughout operating hours. Conditioned air is exhausted out of the building at rapid rates, resulting in
increased emissions and energy use.
2.1 KitPartNumbers
PartNumber Description
H3015-6352 BVC-650 Kit, AT&T Network
H3015-6365 BVC-650 Kit, Verizon Network
H3015-6366 BVC-650 Kit, Vodafone Network

6 BVC-650 Ventilation Controller US
3 Installation
3 Installation
3.1 TypicalLocation
WARNING!
• Installation must be in accordance with local jurisdiction, regulations or standard authority in the country the product
is installed.
• Access to the interior of the controller, when carrying out any work, must only be conducted by trained professional or
certified electrician.
Failuretofollowthesewarningscanresultinseriouspersonalinjuryordeath.
The controller must be located in a secure location. Place the controller in accordance with applicable regulations. Easy
accessibility is recommended for both status observation and alarm/fault purposes. Refer to the installation guide and
wiring diagram (P/N H3015-6360) for proper location of the BVC-650 controller relative to sensors and other connections
within the facility.
3.2 Mounting
NOTICE
• Where cable glands are used for wire entry, use no bigger than 20mm (3/4”).
• Designed for surface mounting, it must be installed by a licensed, insured contractor.
• Prior to drilling any gland or conduit holes in the enclosure, please remove the cover and main power board.
Failuretofollowthisnoticecanresultindamagetothedeviceorimproperfunctionality.
1. Carefully remove the front cover from the unit by unscrewing the four M6
hex bolts located at each corner. To do this, use a socket wrench.
2. Ensure the wall surface is solid and flat to prevent base distortion and mark
the four 6mm (0.236”) screw holes located on the back of the enclosure to
the wall.
3. Use a suitable screw/bolt (M4x30min) and appropriate expanding plug to
fix the back of the enclosure to the wall surface.
4. After executing the mounting and the electrical connections – replace the
front cover and insert the security caps over the four M6 hex bolts.
NOTE:To decrease the risk of damaging the Power Board while mounting the controller, the Power Board can be
removed by removing the four screws located on the board. Place the power board in a location safe location.
3.3 PowerBoardConnectionsOverview
WARNING!
• Access to the interior of the controller, when carrying out any work, must be conducted by a trained professional or
certified electrician.
• Devices must be grounded for electrical safety and to limit the effects of R/F & EMC interference.
• Where cable glands are used for wire entry, use no bigger than 20mm (3/4”).
• For field connections, other than connected heat detectors, use wires suitable for at least 167° F (75° C) .
• Heat detectors must use wires rated from sub-zero to 400° F (200° C).
Failuretofollowthesewarningscanresultinseriouspersonalinjuryordeath.

3 Installation
US BVC-650 Ventilation Controller 7
1. POWER/LINEIN
The BVC-650 requires an AC power supply rating of 100-240V~ connected to the [POWER/LINE IN] connector
using a 3A switched fused spur. When power is connected to the controller, the home screen will be displayed.
2. FIREALARMSHUNT
This dry contact will switch with a fire alarm activation. 100/240VAC, 24VDC or 12VDC should be routed through
[FIRE ALARM SHUNT] to provide the required voltage to trip a shunt breaker (not supplied).
3. HOODLIGHT
This dry contact switches line voltage to hood lighting. The line wire to each light should be run through the [HOOD
LIGHT] terminal. The lighting is separated into three areas, one per hood. Rated at 6A Max per hood.
4. FIREPANEL
A volt free open/close switch input from a fire panel in the event of a fire alarm.
5. HEATDETECTOR1,2,3&AMBIENT
You must use a 4-wire PT100 sensor and wire all 4 cores!

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3 Installation
These are inputs for PT100 duct heat/temperature sensors.
Numbers 1 to 3 refers to the location/zone the sensor is installed. Ambient is for connecting and
monitoring ambient room temperature outside of heat zones. Each terminal has a 4-wire signal from the
PT100. Terminals 2 & 3 are for resistance and terminals 1 & 4 are for cable length resistance
compensation.
6. 0-10VFANOUTPUTS
3x 0-10V outputs to control the hood fans either EC fans or via an inverter or VFD/VSD. Each hood fan 0-10V is
separated into its respective zone matching the heat detector inputs. A single 0-10V output is for control of the main
intake fan. 0V is standby/off for the fans. Minimum and maximum fan speeds are set up in the menu.
7. BMSMODBUS
Connections for Master/Slave protocols used in Building Management Systems to communicate between devices
including this panel are used with [BMS MODBUS]. For more information see section BMS Data.
8. 12VDCor24VDCOUTPUT
A permanent 12 or 24vdc output for external auxiliary devices. Max output: 300mA.
NOTE:This output is used to power the available wireless gateway to provide remote communications and control of the
BVC-650 controller.
3.4 DisplayBoardOverview/Configuration
WARNING!
The following work must be performed with the cover open and the device energized. As a result, there is a risk for electric
shock. A trained professional and/or qualified electrician must perform the work. Avoid contact with energized components.
Failuretofollowthiswarningcanresultinseriouspersonalinjuryordeath.
The display board is located on the back of the front cover. Switch settings can be changed on the back of the display
board when power is live.
1. TouchCalibrationHeader
Settings switch must be on (in the UP position). Short out the two
headers marked [Touch Calib.] to re calibrate the touch sensitivity /
accuracy on the display screen.
2. Celsius°C/Fahrenheit°FSwitch
Select °C or °F to automatically adjust any temperature values in the
system configuration menu.
3. Settings(Menu)Switch
Turn on to access system configuration menu.

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US BVC-650 Ventilation Controller 9
3.5 BMSModbus-Wiring
NOTE:If you are encountering noise or irregular problems with a Modbus link, the problem is likely related to grounding,
incorrect shielding or wiring mains power next to Modbus wiring. Reversing the [+] and [-] connection can lead to the
system to stop working owing to reverse polarity found on the terminals.
BMS MODBUS for master/slave protocols used in building management systems to communicate between devices. A 3
core cable with shield is used to wire the MODBUS terminals [A+ & B-). BMS MODBUS for master/slave protocols used in
building management systems to communicate between devices. A 3 core cable with shield is used to wire the MODBUS
terminals [A+ & B-).
3.6 BMSModbus-120ohmTerminationWiringResistance
Signal communication issues may occur where the bus length is too long, high baud rates are used or signal
reflections are occurring. To avoid this, terminating at each end of a chain may help the quality of the data signal by
turning on the 120-ohm BMS terminal resistor switch. Terminate the first and last device in each chain.
3.7 ConfigurationandModbusRTUDataPoints
Explanation Description/Value
HEAT DETECTOR 1 Temperature value rounded to nearest degree.
Unit follows the settings.
Default is °F
HEAT DETECTOR 2
HEAT DETECTOR 3
HEAT DETECTOR 4 (AMBIENT)
TEMPERATURE UNIT 0=°C, 1=°F
SOFTWARE VERSION 1st DIGIT 0-9 (123 = 1v23)
SOFTWARE VERSION 2nd DIGIT
SOFTWARE VERSION 3rd DIGIT
Not Used
Not Used
Not Used
FAN 1 (0-10V) HOOD Divide the number by 10 to get the voltage value
For Example: 56 = 5.6V
FAN 2 (0-10V) HOOD
FAN 3 (0-10V) HOOD
FAN 4 (0-10V) INTAKE
LIGHT ENABLE RELAY 1 0 = OFF 1 = ON
LIGHT ENABLE RELAY 2
LIGHT ENABLE RELAY 3
BOOST ON / OFF
FIRE PANEL INPUT 1 = OFF 0 = ON

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3 Installation
Explanation Description/Value
TIMER POWER ON / OFF 0 = OFF 1 = ON
HEAT DETECTOR 1 CONNECTION 0 = CONNECTED
1 = NOT CONNECTED
HEAT DETECTOR 2 CONNECTION
HEAT DETECTOR 3 CONNECTION
HEAT DETECTOR A CONNECTION
SHUNT RELAY 0 = OFF
1 = ON
F1 ROC OVERRIDE FLAG
F2 ROC OVERRIDE FLAG
F3 ROC OVERRIDE FLAG
F1 TEMP. OVERRIDE FLAG
F2 TEMP. OVERRIDE FLAG
F2 TEMP. OVERRIDE FLAG
F1 AMBIENT OVERRIDE FLAG
F2 AMBIENT OVERRIDE FLAG
F3 AMBIENT OVERRIDE FLAG
MAIN TEMP. OVERRIDE FLAG
F1 MAIN TEMP. OVERRIDE FLAG
F2 MAIN TEMP. OVERRIDE FLAG
F3 MAIN TEMP. OVERRIDE FLAG
F1 COOLING TIMER (min.) (1 min = 1m 00s – 1m 59s)
F2 COOLING TIMER (min.)
F3 COOLING TIMER (min.)

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US BVC-650 Ventilation Controller 11
3.8 AccessSystemConfigurationSettings
WARNING!
• To view, change and save settings, mains power must be provided.
• The following work must be performed with the cover open and the device energized. As a result, there is a risk for
electric shock. A trained professional and/or qualified electrician must perform the work. Avoid contact with
energized components.
Failuretofollowthesewarningscanresultinseriouspersonalinjuryordeath.
Access system settings by turning the dip switch on marked [SETTINGS] on the backside of the cover while the device is
open. The BVC-650 has a touch screen, which allows the user to configure the system. There are multiple menu screens,
selectable by touching either side of the screen.
When the system is configured, turn the [Settings] switch off and the system will automatically save settings and restart.
ScrollScreenPages Select/ChangeOption
Press the arrow at the side of the screen. Press the blue option box or press and hold.
3.9 SystemConfigurationOptions
Function Option Explanation
Brightness (%) 0 - 100
Increments of 10
Screen backlight brightness
Fire Panel Selection F.OFF
F.ON
I.ON
H.ON
The BVC-650 needs a closed contact from an external fire
panel (where used) in order to operate. This setting tells
the BVC-650 what to do when the contact from the fire
panel goes open circuit:
F.OFF Turn All Hood & Intake Fans OFF.
F.ONTurn All Hood & Intake Fan ON at 10V.
I.ON Turn Hood Fan OFF /Turn Intake Fan ON at 10V.
H.ON Turn Intake Fan OFF/Turn Hood Fan ON at 10V.
Modbus Address 1-32 BVC-650 Panel address from master BMS Modbus.
Modbus Baud Rate 9600
19200
38400
57600
115200
Modbus Data Exchange Speed (bit per second).
Timer Controller auto on/off settings. See section ‘Timer Configuration’
About product Press for system details.
Factory reset Resets the BVC-650 to a factory set condition.
FAN 1 Min. speed 1 - 9 (Volts) Set the Minimum Speed for HOOD FAN 1. The BVC-650
will not drive the fan below this speed unless it’s OFF

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3 Installation
Function Option Explanation
FAN 1 Max. speed 1 - 10 (Volts) Maximum Speed for HOOD FAN 1. The BVC-650 will not
drive the fan above this speed unless in remote override
FAN 2 Min. speed 1 - 9 (Volts) Minimum Speed for HOOD FAN 2. The BVC-650 will not
drive the fan below this speed unless it’s OFF
FAN 2 Max. speed 1 - 10 (Volts) Maximum Speed for HOOD FAN 2. The BVC-650 will not
drive the fan above this speed unless in remote override
FAN 3 Min. speed 1 - 9 (Volts) Minimum Speed for HOOD FAN 3. The BVC-650 will not
drive the fan below this speed unless it’s OFF
FAN 3 Max. speed 1 - 10 (Volts) Maximum Speed for HOOD FAN 3. The BVC-650 will not
drive the fan above this speed unless in remote override
Intake FAN Min. speed 1 - 9 (Volts) Minimum Speed for INTAKE FAN. The BVC-650 will not
drive the fan below this speed unless it’s OFF
Intake FAN Max. speed 1 - 10 (Volts) Maximum Speed for INTAKE FAN. The BVC-650 will not
drive the fan above this speed unless in remote override
Fan Differential (%) OFF
10 to 90
Increments of 10
Differential between Intake and Hood Fans as a
percentage reduction of the Intake. So, on 100% Exhaust,
10% setting would mean the Intake ran at 10% slower
than exhaust and will sop on the MIN or MAX speeds as
set above.
Boost time (min.) 1-30 Pressing the ‘Boost’ button will drive all fans at 100%
capacity for time selected. (Disabled by re-pressing the
button).
FAN 1 Min. temp 4 - 119°C
(40 - 247°F)
The minimum temperature at which the controller will start
driving HOOD FAN 1. This is the temperature at which it is
determined by site and usage analysis that the fan should
switch on and be running at MIN set speed as above.
DEFAULT setting of this is a generalisation and may not
be optimised for your kitchen specifically.
FAN 1 Max. temp 5 - 120°C
(41 - 248°F)
The temperature at which the controller will be outputting
MAX PRESET VOLTAGE (Set Above) to Hood FAN 1.
This is the temperature at which it is determined by site
and usage analysis that the fan should be running at MAX
set speed as above. DEFAULT setting of this is a
generalisation and may not be optimised for your kitchen
specifically.
FAN 2 Min. temp 4 - 119°C
(40 - 247°F)
The minimum temperature at which the controller will start
driving HOOD FAN 2. This is the temperature at which it is
determined by site and usage analysis that the fan should
switch on and be running at MIN set speed as above.
DEFAULT setting of this is a generalisation and may not
be optimised for your kitchen specifically.
FAN 2 Max. temp 5 - 120°C
(41 - 248°F)
The temperature at which the controller will be outputting
MAX PRESET VOLTAGE (Set Above) to Hood FAN 2.
This is the temperature at which it is determined by site
and usage analysis that the fan should be running at MAX
set speed as above. DEFAULT setting of this is a
generalisation and may not be optimised for your kitchen
specifically.
FAN 3 Min. temp 4 - 119°C
(40 - 247°F)
The minimum temperature at which the controller will start

3 Installation
US BVC-650 Ventilation Controller 13
Function Option Explanation
driving HOOD FAN 3. This is the temperature at which it is
determined by site and usage analysis that the fan should
switch on and be running at MIN set speed as above.
DEFAULT setting of this is a generalisation and may not
be optimised for your kitchen specifically.
FAN 3 Max. temp 5 - 120°C
(41 - 248°F)
The temperature at which the controller will be outputting
MAX PRESET VOLTAGE (Set Above) to Hood FAN 3.
This is the temperature at which it is determined by site
and usage analysis that the fan should be running at MAX
set speed as above. DEFAULT setting of this is a
generalisation and may not be optimised for your kitchen
specifically.
F1 Cool Down Timer 0-60 Select the minutes to keep the fan ON to cool down the
hood after the BVC moves to OFF
F2 Cool Down Timer 0-60 Select the minutes to keep the fan ON to cool down the
hood after the BVC moves to OFF
F3 Cool Down Timer 0-60 Select the minutes to keep the fan ON to cool down the
hood after the BVC moves to OFF
FAN 1 Average over time 5-120 Select the SECONDS that the BVC will average over for
the 0-10V output. Makes for a smoother fan control curve.
The longer the time, the less reactive the fan is to
fluctuations in temperature. Shorter times make for more
reactive fan control.
FAN 2 Average over time 5-120 Select the SECONDS that the BVC will average over for
the 0-10V output. Makes for a smoother fan control curve.
The longer the time, the less reactive the fan is to
fluctuations in temperature. Shorter times make for more
reactive fan control.
FAN 3 Average over time 5-120 Select the SECONDS that the BVC will average over for
the 0-10V output. Makes for a smoother fan control curve.
The longer the time, the less reactive the fan is to
fluctuations in temperature. Shorter times make for more
reactive fan control.
Intake Average over time 5-960 Select the SECONDS that the BVC will average over for
the 0-10V output. Makes for a smoother fan control curve,
The longer the time, the less reactive the fan is to
fluctuations in temperature. Shorter times make for more
reactive fan control.
Intake band step 0-30 Creates dead bands/steps in the intake fan output for
damper control. 0 is full 0-10V control for a fan, 20 is 5
clear steps of movement (Range from 0.0 to 3.0V). Write
10 times higher integer value to Modbus register to get
float in the menu.
Ambient Temp. Installed? NO
YES
Select YES if a temperature sensor is installed in a typical
location for an ambient temperature reference. Wired into
[Heat Detector Ambient]
IfAmbientTemperatureSensorisnotinstalled.
F1 R.O.C. Over: (min.) 1-14 This is the time range in minutes for the temperature rate
of change. Rate of change is used when the BVC-650 is
OFF and heat is detected in the hood from cooking. This

14 BVC-650 Ventilation Controller US
3 Installation
Function Option Explanation
can be used to bring the BVC-650 ON if cooking is started
out of hours of the timer. Only the relevant hood zone and
the intake will switch on.
F2 R.O.C. Over: (min.) 1-14 This is the time range in minutes for the temperature rate
of change. Rate of change is used when the BVC-650 is
OFF and heat is detected in the hood from cooking. This
can be used to bring the BVC-650 ON if cooking is started
out of hours of the timer. Only the relevant hood zone and
the intake will switch on.
F3 R.O.C. Over: (min.) 1-14 This is the time range in minutes for the temperature rate
of change. Rate of change is used when the BVC-650 is
OFF and heat is detected in the hood from cooking. This
can be used to bring the BVC-650 ON if cooking is started
out of hours of the timer. Only the relevant hood zone and
the intake will switch on.
F1 R.O.C. – Rise of: (Temp.) 5-50 Use this option to select the temperature rise over the
[period of time in the previous setting] that will
automatically activate the BVC-650 fan 1 as above
F2 R.O.C. – Rise of: (Temp.) 5-50 Use this option to select the temperature rise over the
[period of time in the previous setting] that will
automatically activate the BVC-650 fan 2 as above
F3 R.O.C. – Rise of: (Temp.) 5-50 Use this option to select the temperature rise over the
[period of time in the previous setting] that will
automatically activate the BVC-650 fan 3 as above
IfAmbientTemperatureSensorisinstalled.
F1 ON – Ambient Differential (%) 10-200 Select the % over the actual AMBIENT temperature
reading that the HOOD temperature sensors must reach
to automatically activate the BVC-650 fan 1. Ambient can
be used instead of the Rate of Change (R.O.C) above to
determine if cooking is taking place out of hours of the
timer and bring the relevant hood fan(s) on along with the
intake.
F1 OFF – Ambient Differential (%) 5-150 Select the % over the AMBIENT temperature reading that
the HOOD temperature sensors must reach to
automatically disable the BVC-650 fan 1. This works in
reverse to the ON procedure detailed above to turn the
BVC-650 OFF once cooking has ceased out of hours of
the timer.
F2 ON – Ambient Differential (%) 10-200 Select the % over the AMBIENT temperature reading that
the HOOD temperature sensors must reach to
automatically activate the BVC-650 fan 2. Ambient can be
used instead of the Rate of Change (R.O.C) above to
determine if cooking is taking place out of hours of the
timer and bring the relevant hood fan(s) on along with the
intake.
F2 OFF – Ambient Differential (%) 5-150 Select the % over the AMBIENT temperature reading that
the HOOD temperature sensors must reach to
automatically disable the BVC-650 fan 2. This works in
reverse to the ON procedure detailed above to turn the
BVC-650 OFF once cooking has ceased out of hours of
the timer.

3 Installation
US BVC-650 Ventilation Controller 15
Function Option Explanation
F3 ON – Ambient Differential (%) 10-200 Select the % over the AMBIENT temperature reading that
the HOOD temperature sensors must reach to
automatically activate the BVC-650 fan 3. Ambient can be
used instead of the Rate of Change (R.O.C) above to
determine if cooking is taking place out of hours of the
timer and bring the relevant hood fan(s) on along with the
intake.
F3 OFF – Ambient Differential (%) 5-150 Select the % over the AMBIENT temperature reading that
the HOOD temperature sensors must reach to
automatically disable the BVC-650 fan 3. This works in
reverse to the ON procedure detailed above to turn the
BVC-650 OFF once cooking has ceased out of hours of
the timer.
3.10 ManualTimerConfiguration:Date&Time
If modifying the factory default setting of permanently on, ensure that the modified on/off times correspond to the times that
the monitored equipment may be used. Ensure controls are in place to update the on/off times for the device when there
are changes to the schedule for use of the monitored equipment.
When setting the current date and time, ensure that the date and time are accurate.
Only disable the automatic daylight savings time if you are in a location that does not follow daylight savings time.
Set the date and clock (24hour) by selecting [Timer] in the settings menu.
The clock start of the day is 00:00:00 and 23:59:59 represents the end of the day.
3.11 ManualTimerConfiguration:AutoOn/OffSetup
Set the BVC-650 Controller to switch on and off at set times throughout a 7-day week. Press [Setup ON/OFF].
To return back to factory default settings, you must first enter the display menus by switching the settings switch to the up
position. Tap the factory reset selection on the touch screen and the unit will reset to factory defaults. If the unit is shut
down in a timer schedule you can still reset to defaults by going into the settings menu and doing a factory reset.

16 BVC-650 Ventilation Controller US
3 Installation
3.12 ModbusTimerConfiguration:Date&Time
When setting the current date and time, ensure that the date and time are accurate.
Only disable the automatic daylight savings time if you are in a location that does not follow daylight savings time.
The BVC-650 will remain ON when start times and end times are the same value – this is the factory set condition.
Function Option Explanation
Monday 0 - 23
Increments of 1
BVC-650 switch ONHour
Default is 12
Monday 0 - 59
Increments of 1
BVC-650 switch ONMinute
Default is 0
Monday 0 - 23
Increments of 1
BVC-650 switch OFFHour
Default is 12
Monday 0 - 59
Increments of 1
BVC-650 switch OFFMinute
Default is 0
Tuesday 0 - 23
Increments of 1
BVC-650 switch ONHour
Default is 12
Tuesday 0 - 59
Increments of 1
BVC-650 switch ONMinute
Default is 0
Tuesday 0 - 23
Increments of 1
BVC-650 switch OFFHour
Default is 12
Tuesday 0 - 59
Increments of 1
BVC-650 switch OFFMinute
Default is 0
Wednesday 0 - 23
Increments of 1
BVC-650 switch ONHour
Default is 12
Wednesday 0 - 59
Increments of 1
BVC-650 switch ONMinute
Default is 0
Wednesday 0 - 23
Increments of 1
BVC-650 switch OFFHour
Default is 12
Wednesday 0 - 59
Increments of 1
BVC-650 switch OFFMinute
Default is 0
Thursday 0 - 23
Increments of 1
BVC-650 switch ONHour
Default is 12
Thursday 0 - 59
Increments of 1
BVC-650 switch ONMinute
Default is 0
Thursday 0 - 23
Increments of 1
BVC-650 switch OFFHour
Default is 12
Thursday 0 - 59
Increments of 1
BVC-650 switch OFFMinute
Default is 0
Friday 0 - 23
Increments of 1
BVC-650 switch ONHour
Default is 12
Friday 0 - 59
Increments of 1
BVC-650 switch ONMinute
Default is 0
Friday 0 - 23
Increments of 1
BVC-650 switch OFFHour
Default is 12
Friday 0 - 59
Increments of 1
BVC-650 switch OFFMinute
Default is 0
Saturday 0 - 23 BVC-650 switch ONHour

3 Installation
US BVC-650 Ventilation Controller 17
Function Option Explanation
Increments of 1 Default is 12
Saturday 0 - 59
Increments of 1
BVC-650 switch ONMinute
Default is 0
Saturday 0 - 23
Increments of 1
BVC-650 switch OFFHour
Default is 12
Saturday 0 - 59
Increments of 1
BVC-650 switch OFFMinute
Default is 0
Sunday 0 - 23
Increments of 1
BVC-650 switch ONHour
Default is 12
Sunday 0 - 59
Increments of 1
BVC-650 switch ONMinute
Default is 0
Sunday 0 - 23
Increments of 1
BVC-650 switch OFFHour
Default is 12
Sunday 0 - 59
Increments of 1
BVC-650 switch OFFMinute
Default is 0
3.13 DayOffSetup
Function Explanation
Monday OFF 0 = NO
1 = YES (off)
Tuesday OFF
Wednesday OFF
Thursday OFF
Friday OFF
Saturday OFF
Sunday OFF
3.14 FanOverride
Function Option Explanation
Override ON
OFF
This function will drive all fans with maximum speed of 10V ignoring any Min
and Max 0-10V values, temperatures, and boost.
3.15 TimerConfiguration:Date&Time
Function Option Explanation
Year 2000-2099 Set YEAR
Month 1-12 Set MONTH
Day 1-31 Set DAY
Hour 0-23 Set HOUR
Minute 0-59 Set MINUTE
Second 0-59 Set SECOND

18 BVC-650 Ventilation Controller US
3 Installation
3.16 FactorySetTimer
AutoON/OFFTimer CONDITION  DayOFFSetup 
(Day) ON h 12 All Days OFF
(Day) ON m 0
(Day) OFF h 12
(Day) OFF m 0
3.17 FactorySetCondition
Function Condition Function Condition Function Condition
Brightness (%) 100 Fan Differential
(%)
OFF FAN 1 Average
over time
5 sec
Fire panel
selection
H. ON Boost time (min.) 10 FAN 2 Average
over time
5 sec
Modbus Address 1FAN 1 Min. temp. 25°C (77°F) FAN 3 Average
over time
5 sec
Modbus Baud
Rate
9600 FAN 1 Max. temp. 100°C (212°F) Intake Average
over time
5 sec
FAN 1 Min. speed 5FAN 2 Min. temp. 25°C (77°F) Intake band step 0.0 (0)
FAN 1 Max. speed 10 FAN 2 Max. temp. 100°C (212°F) Ambient Temp.
Installed?
NO
FAN 2 Min. speed 5FAN 3 Min. temp. 25°C (77°F) F1 R.O.C. Over:
(min.)
3
FAN 2 Max. speed 10 FAN 3 Max. temp. 100°C (212°F) F2 R.O.C. Over:
(min.)
3
FAN 3 Min. speed 5F1 Cool Down
Timer
10 min F3 R.O.C. Over:
(min.)
3
FAN 3 Max. speed 10 F2 Cool Down
Timer
10 min F1 R.O.C. – Rise
of: (Temp.)
20
Intake FAN Min.
speed
5F3 Cool Down
Timer
10 min F2 R.O.C. – Rise
of: (Temp.)
20
Intake FAN Max.
speed
10 F3 R.O.C. – Rise
of: (Temp.)
20
IfAmbientTemperatureSensorinstalled:
F1 ON – Ambient
Differential (%)
50 F2 ON – Ambient
Differential (%)
50 F3 ON – Ambient
Differential (%)
50
F1 OFF – Ambient
Differential (%)
25 F2 OFF – Ambient
Differential (%)
25 F3 OFF – Ambient
Differential (%)
25

4 Operation
US BVC-650 Ventilation Controller 19
4 Operation
4.1 FirstPowerUp/MainScreen
When electrical power is supplied and the BVC-650 is switched on, the main screen displays a visual representation of the
three Hood Fan 0-10V outputs (green bars) and 0-10V intake fan (blue bars).
Each bar represents a ~one (1) volt output to the fan.
The burger icon (top left of screen) appears when the system is working, and no-fault conditions are present.
The fan icon (bottom left of screen) is for boosting the fans manually. See Section 4.3 Boost & Boost Overrun (Maximum
Ventilation Output).
4.2 DiagnosticScreen
By pressing the screen arrow to the left of the screen, you access a visual diagnostic detailing the 0-10V hood fan
extraction outputs, the temperature of each hood fan, ambient temperature if installed and the voltage of the intake fan.
Press the screen scroll arrow to return to the main page.
4.3 Boost&BoostOverrun(MaximumVentilationOutput)
Pressing the Boost icon will switch all fans on 100%, irrespective of the maximum fan speeds configured upon installation.
The boost will stay active until either the configured boost timer elapses or the boost icon is pressed again.
Boost: If the panel is in on (normal operation within the times configured), then Boost may be activated. All fan outputs will
be driven at maximum capacity (10V).
BoostOverrun: When the panel is off (timer off/ temperature override off) press the screen to wake up the panel. Press
the boost icon and the Boost Overrun indication will appear.

20 BVC-650 Ventilation Controller US
5 Maintenance
4.4 FirePanelAlarm
NOTICE
The Fire Panel Alarm has priority over Boost and Modbus override actions. Ensure the proper Fire Panel Alarm settings
are set to drive the hood fans properly.
Failuretofollowthisnoticecanresultinimproperfunctionalityofthedevice.
Fire Panel Alarm will drive the fans in one of four (4) ways (configured in the menu on installation) either:
F.OFF (Hood & Intake Fans both OFF) or
F.ON (Hood & Intake Fans ON at 10V) or
I.ON (Hood Fan OFF / Intake Fan ON at 10V) or
H.ON (Intake Fan OFF / Hood Fan ON at 10V).
The [SHUNT RELAY] output will switch with the Fire Panel Alarm. The fire panel alarm is reset by restarting the controller
using the ON/OFF switch and only if the fire panel alarm has been cleared.
4.5 FanOverride
NOTICE
Fan Override has priority over the Boost Overrun and is only enabled/disabled via external Modbus control. Be aware of
this condition if you chose to disable the Fan Override function.
Failuretofollowthisnoticecanresultinimproperfunctionalityofthedevice.
When the fan override is enabled via an external Modbus connection all fan outputs are
driven at maximum capacity (10V).
The override will stay active until the configured override timer elapses.
4.6 FaultCondition
WARNING!
If a faulty or disconnected sensor is detected, the respective zone will run the hood fan at the maximum speed configured
in the settings on installation. Ensure the maximum speeds are set appriopriately to run the hood fans at the proper setting
during this condition.
Failuretofollowthiswarningcanresultinseriouspersonalinjuryordeath.
If any of the heat sensors loses connection or detects a temperature below 14°F -10°C) or above 302°F
(150°C), then main screen will display a fault icon.
When the fault icon is displayed, scroll to the diagnostics screen.
A red “X” replaces the heat sensor temperature to indicate the faulty or disconnected sensor.
5 Maintenance
5.1 Cleaning
Keep the BVC-650 controller in good working order
• Remove any dust/debris from the outer enclosure regularly using a slightly damp cloth.
• Never use detergents or solvents to clean your device(s).
• Never paint the device(s). Paint may interfere with the equipment.