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Controls by Monodraught
iNVent 2Intelligent Natural Ventilation Control
The Monodraught iNVent 2 system is a Natural Ventilation management system for up to 4 zones, each consisting of up to 3 Natural Ventilation systems. It utilises seasonally adjusted proportional control based on internal temperature and CO2. With configurable sensor, strategy, and actuator mapping via USB, as well as built in data logging, the iNVent 2 system can control Natural Ventilation systems to suit any building application.
Features
• Supports all Monodraught Natural Ventilation products• Real-Time Clock• LCD screen• 60W PSU• Automatically resets if power is interrupted using watchdog timer• Seasonal control strategy, influenced by internal and external temperatures, as well as CO2 levels• Individually fused (resettable) 24V zone supplies• Built-In data logging
• Master volt-free I/O can be distributed between multiple panels • BACnet visible with optional BACnet module• RS485 communication bus• USB access for configuration and monitoring• Configurable sensor, strategy and actuator mapping• External cooling and heating zone control• Fully backwards compatible with iNVent
info@monodraught.com / +44 (0)1494 897700 2
SOLA-BOOST® Classic
Dimensions• 255 mm x 385 mm x 40 mm
Mounting• Unit is designed to be wall mounted in a
decentralised location within the building, close to the zones it is controlling, like a storage cupboard, plant room or above a suspended ceiling
Operating Conditions• 0 - 40 °C• 10 - 80% RH non-condensing
Power Supply• 24V DC @ 60 mA Nominal• Supplied with SMPS for converting 240V AC
to 24V DC @ 2.5A requiring connection to a 3A switched spur
• The iNVent 2 can supply up to a total of 2A from the 24VDC supply to field devices
Terminals• Cable size 1 mm2 CSA max.• Cable size 0.5 mm2 CSA multi-strand
recommended
Case• Front Cover: Acrylic Capped ABS• Wall Mounting Holes Located Inside the Case
PC Interface
The iNVent 2 Control Panel has an internal USB port which allows a commissioning engineer to connect a Laptop to the panel for custom configuration, maintenance and data collection purposes.
Functionality
DAMPER/LOUVRE
0V 24VDMP. LVR.
WALL ACTUATOR
0V 24V
Zone
#
0V 24V 0V 24V
SENSOR 1 SENSOR 2RS485
DMP. LVR.
RAIN SMOKE FAULT
COM NO
COM ORCOM
COM COMH C
ALARMHEAT
EXTERNAL TEMP.
0V 24VCOM O C
FIRE SWITCHCOMP SWITCH
COM C1 C2
DAMPER/LOUVRE
0V 24VDMP. LVR.
WALL ACTUATOR
0V 24V
Zone
#
0V 24V 0V 24V
SENSOR 1 SENSOR 2RS485
DMP. LVR.DAMPER/LOUVRE
0V 24VDMP. LVR.
WALL ACTUATOR
0V 24V
Zone
#
0V 24V 0V 24V
SENSOR 1 SENSOR 2RS485
DMP. LVR.DAMPER/LOUVRE
0V 24VDMP. DMP. LVR.
WALL ACTUATOR
0V 24V
Zone
#
0V 24V 0V 24V
SENSOR 1 SENSOR 2RS485
LVR.
Z1 COOLING Z2 COOLING
COM NONOCOM
COM COMNO NO
Z2 HEATINGZ1 HEATING
Z3 COOLING Z4 COOLING
COM NONOCOM
COM COMNO NO
Z4 HEATINGZ3 HEATING
COOLING/HEATING SOLID STATE RELAYS
MASTER CONTROLS
0V Z324V 0V Z424VZ4Z3Z2Z10V
0V Z124V 0V Z224VZ4Z3Z2Z10VBMS INPUTS
BMS OUTPUTS
GENERAL PURPOSE
MONODRAUGHT iNVent 2
24V
0V
24V
24V
0V
B
A
BUTTON2
BUTTON1
LED3
LED7
LED6
LED4LED2
Tx Rx
LED10 LED17LED5LED1
LED11
LED8LED9
LED12
LED13LED14
LED15LED16
A
D
B
C
Case Dimensions
2
305 mm
385 mm
110
44
366 mm
CABLE ENTRY
FIXING HOLES
40255 m
m
EXTERNAL INTERNAL
PLAN
DAMPER/LOUVRE
0V 24VDMP. LVR.
WALL ACTUATOR
0V 24V
Zone
#
0V 24V 0V 24V
SENSOR 1 SENSOR 2RS485
DMP.
RAIN SMOKE FAULT
COM NO
COM ORCOM
COM COMH C
ALARMHEAT
EXTERNAL TEMP.
0V 24VCOM O C
FIRE SWITCHCOMP SWITCH
COM C1 C2
DAMPER/LOUVRE
0V 24VDMP. DMP. LVR.
WALL ACTUATOR
0V 24V
Zone
#
0V 24V 0V 24V
SENSOR 1 SENSOR 2RS485
DAMPER/LOUVRE
0V 24VDMP. LVR.
WALL ACTUATOR
0V 24V
Zone
#
0V 24V 0V 24V
SENSOR 1 SENSOR 2RS485
DMP.DAMPER/LOUVRE
0V 24VDMP. LVR.
WALL ACTUATOR
0V 24V
Zone
#
0V 24V 0V 24V
SENSOR 1 SENSOR 2RS485
DMP.
Z1 COOLING Z2 COOLING
COM NONOCOM
COM COMNO NO
Z2 HEATINGZ1 HEATING
Z3 COOLING Z4 COOLING
COM NONOCOM
COM COMNO NO
Z4 HEATINGZ3 HEATING
COOLING/HEATING SOLID STATE RELAYS
MASTER CONTROLS
0V Z324V 0V Z424VZ4Z3Z2Z10V
0V Z124V 0V Z224VZ4Z3Z2Z10VBMS INPUTS
BMS OUTPUTS
GENERAL PURPOSE
MONODRAUGHT iNVent 2
24V
0V
Compatible Products
WINDCATCHER® Classic WINDCATCHER® X-Air SOLA-BOOST® X-Air
VENTSAIR® Façade VENTSAIR® Roof Mounted Terminal
VENTSAIR® Acoustic Air Transfer System
Specification
info@monodraught.com / +44 (0)1494 897700 3
Master InputsA
RAIN SMOKE FAULT
COM NO
COM NONOCOM
COM COMNO NO
ALARMHEAT
EXTERNAL TEMP.
0V 24VCOM O C
FIRE SWITCHCOMP SWITCH
COM O C
24V
0V
Competition Key Switch (optional)
Allows the limiting of ventilation for air movement sensitive
activities
Rain Sensor Closes windows and protects against rain
ingress in natural ventilation products
Heating Interlock (optional)
Prevents the system from cooling spaces when
heating is onFire Alarm (optional)
Closes sources of ventilation in response to a fire alarm input to
restrict the spread of fire
Fault Signal (optional)A volt-free contact which when open indicates a fault has occurred
Smoke Vent (optional) Opens specially configured smoke ventilation airways to help keep escape routes clear of smoke and to aid evacuation in event of a fire
External Temperature Used to adjust the seasonal strategy and protect ventilation systems against snow/frost
Fire Key Switch (optional) Allows fire officers to override the system to open or close ventilation systems if necessary
4 Heating Solid-State Relay Outputs
• Allows iNVent 2 to control auxiliary heating in each zone
4 Cooling Solid-State Relay Outputs• Allows iNVent 2 to control auxiliary cooling in
each zone
Heating & CoolingC
4 General Purpose 0 - 10V Inputs• Used for additional sensor or control inputs
4 BMS 0 - 10V Inputs• Allows a BMS system to share sensor data
with an iNVent 2 panel. This allows hybrid ventilation systems to share the same sensor readings, allowing highly accurate interlinking of cooling and heating systems
4 BMS 0 - 10V Outputs• Used to send analogue signals to a BMS
system in order to share sensor data or control information. This allows the BMS to operate on the same information as iNVent 2
General Purpose & BMSB
Z1 COOLING Z2 COOLING
COM NONOCOM
COM COMNO NO
Z2 HEATINGZ1 HEATING
Z3 COOLING Z4 COOLING
COM NONOCOM
COM COMNO NO
Z4 HEATINGZ3 HEATING
COOLING/HEATING SOLID STATE RELAYS
0V Z324V 0V Z424VZ4Z3Z2Z10V
0V Z124V 0V Z224VZ4Z3Z2Z10VBMS INPUTS
BMS OUTPUTS
GENERAL PURPOSE
4 Input Zones with the Following Inputs per Zone• 2 sensor 0 - 10V inputs: Can be used with temperature, CO2 or other sensors, or with Monodraught
Multifunction wall controllers• 3 actuator 0 - 10V feedback inputs: Used to monitor the position of the actuators or can be re-
purposed for use as additional sensors
4 Output Zones with the Following Outputs per Zone• 3No. 0 - 10V analogue outputs: Used to control actuators in Monodraught natural ventilation
products
Input & Output ZonesD
Wiring Examples (I)
Zone
#
DAMPER/LOUVRE0V 24VDMP. DMP. LVR.
WALL ACTUATOR0V 24V
0V 24V 0V 24V
SENSOR 1 SENSOR 2RS485
Windcatcher Classic
4-Co
re 0
.5m
m2 C
able
- RS
-660
-409
6/ F
arne
ll 24
4012
1(s
uppl
ied
and
fitte
d by
oth
ers)
LVR.
Zone
#
DAMPER/LOUVRE0V 24VDMP. DMP. LVR.
WALL ACTUATOR0V 24V
0V 24V 0V 24V
SENSOR 1 SENSOR 2RS485
4-Co
re 0
.5m
m2 C
able
- RS
-660
-409
6/ F
arne
ll 24
4012
1(s
uppl
ied
and
fitte
d by
oth
ers)
LVR.
Windcatcher X-Air
Zone
#
DAMPER/LOUVRE0V 24VDMP. DMP. LVR.
WALL ACTUATOR0V 24V
0V 24V 0V 24V
SENSOR 1 SENSOR 2RS485
4-Co
re 0
.5m
m2 C
able
- RS
-660
-409
6/ F
arne
ll 24
4012
1(s
uppl
ied
and
fitte
d by
oth
ers)
LVR.
Sola-Boost X-Air
WINDCATCHER X-Air CablingWire Colour Functionality
Blue 0V DC PowerGreen 2 - 10V Damper ControlWhite 2 - 10V Damper FeedbackYellow 2 - 10V Louvre ControlBlack 2 - 10V Louvre FeedbackRed 24V DC Power
SOLA-BOOST X-Air CablingWire Colour Functionality
Blue 0V DC PowerGreen 0 - 10V Wall Controller SignalWhite 2 - 10V Damper ControlYellow 2 - 10V Louvre ControlBlack 2 - 10V Louvre FeedbackRed 24V DC Power
WINDCATCHER Classic CablingWire Colour Functionality
Blue 0V DC PowerGreen 2 - 10V Damper Control
Yellow (Optional) 2 - 10V Damper FeedbackRed 24V DC Power
info@monodraught.com / +44 (0)1494 897700 4
Season Spring Summer Autumn WinterStart Date 01 March 01 June 01 September 01 DecemberFinish Date 31 May 30 August 30 November Last Day of Feb
Zone Temperature Damper Output
Up to 16°C
Dampers Closed
Dampers Closed
Dampers ClosedDampers Closed
At 17°C Dampers Open 20%At 18°C Dampers Open 40%At 19°C Dampers Open 60%At 20°C Dampers Open 20% Dampers Open 80% Dampers Open 20%At 21°C Dampers Open 40%
Dampers Fully Open
Dampers Open 40%At 22°C Dampers Open 60% Dampers Open 60% Dampers Open 10%At 23°C Dampers Open 80% Dampers Open 80% Dampers Open 20%At 24°C
Dampers Fully Open Dampers Fully OpenDampers Open 30%
At 25°C Dampers Open 40%At 26°C Dampers Open 50%
Night Time CoolingActivLouvre Opening 50% 100% 50% 25%
External TemperatureThe external temperature sensor is used to season switch the system as shown below in the table.
The external temperature is used in real time for closing the systems, if the external temperature is below 5°C for the Frost Mode. If the external temperature is less than 8°C and the rain sensor activates, the system enters snow mode and closes the louvres. In addition, if required, dampers can be set to close when the internal temperature is at least 25°C and the external temperature is at least 5°C above the internal temperature in order to prevent a space from heating up due to higher outside air temperatures (i.e. 30°C outside, 25°C inside)
Current Calendar Season Spring Summer Autumn WinterExternal Temp (ET) Operational Season for Next 24 Hours
ET < 8°C Winter Spring Winter Winter8°C < ET < 15°C Spring Spring Autumn Winter
15°C < ET < 22°C Spring Summer Autumn SpringExt Temp > 22°C Summer Summer Summer Spring
Input Priority1 Fire Key Switch Highest2 Fire Alarm3 Competition Switch4 Override Open5 Override Close6 Rain/Snow/Frost Protection7 CO2
8 Heating Interlock9 Temperature Lowest
Wiring Examples (II) Control StrategyMonodraught Seasonal Control Strategy
Zone
#
DAMPER/LOUVRE0V 24VDMP. DMP. LVR.
WALL ACTUATOR0V 24V
0V 24V 0V 24V
SENSOR 1 SENSOR 2RS485
4-Co
re 0
.5m
m2 C
able
- RS
-660
-409
6/ F
arne
ll 24
4012
1(s
uppl
ied
and
fitte
d by
oth
ers)
LVR.
Sola-Boost Classic
Zone
#
DAMPER/LOUVRE0V 24VDMP. DMP. LVR.
WALL ACTUATOR0V 24V
0V 24V 0V 24V
SENSOR 1 SENSOR 2RS485
4-Co
re 0
.5m
m2 C
able
- RS
-660
-409
6/ F
arne
ll 24
4012
1(s
uppl
ied
and
fitte
d by
oth
ers)
LVR.
Wall Controller
SOLA-BOOST Classic CablingWire Colour Functionality
Blue 0V DC PowerGreen 0 - 10V Wall Controller SignalYellow 2 - 10V Damper ControlRed 24V DC Power
Wall Controller CablingWire Colour Functionality
Blue 0V DC PowerGreen 0 - 10V Wall Controller SignalRed 24V DC Power
Room Temperature Sensor CablingWire Colour Functionality
Blue 0V DC PowerGreen 0 - 10V Temperature SignalRed 24V DC Power
Zone
#
DAMPER/LOUVRE0V 24VDMP. DMP. LVR.
WALL ACTUATOR0V 24V
0V 24V 0V 24V
SENSOR 1 SENSOR 2RS485
4-Co
re 0
.5m
m2 C
able
- RS
-660
-409
6/ F
arne
ll 24
4012
1(s
uppl
ied
and
fitte
d by
oth
ers)
LVR.
Room Temperature Sensor
Note: When the local zone controller measures a temperature below 11°C it will report override closed to the iNVent 2 panel. Therefore temperature has priority 5 under these extreme conditions.
Rain Detection
The system will ignore temperature and CO2 control and fully close the louvres immediately on rain. Higher priorities should be actioned (override and fire, etc.)
Input Priorities
Halifax House, High WycombeBuckinghamshire, HP12 3SE
+44 01494 897700
+44 01494 532465
www.monodraught.com
info@monodraught.com
Monodraught Ltd
@MonodraughtLtd
Monodraught Ltd
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