LINDINVENT ISQ-F Exposed Active Supply Air Diffuser Owner’s Manual

ISQ-F Exposed Active Supply Air Diffuser

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Specifications

• Product Name: ISQ-F Exposed Active Supply Air Diffuser

• Technical Solutions: International patents for efficient
  climate control

• Performance: Easy planning, installation, commissioning, and
  user interface

• Life Cycle Cost: Based on demand-controlled ventilation with
  under-tempered supply air

• Productivity: Cooling with air leads to increased
  efficiency

• Design: Sustainable design with environmental
  considerations

• EPD: Environmental Product Declaration available for all
  products in series

• Flexibility: Achieve attractive indoor climate without
  water-borne cooling

• Noise Level: Below 30 dB(A) up to 125 l/s at 100 Pa

Product Usage Instructions

System Requirements

Presence and level of activity in the space impact the airflow
needed. Ensure total airflow adapts to actual need to minimize
energy consumption.

Free Cooling

Avoid cold drafts by maintaining the right pressure and
temperature in the duct system. Continuously optimize pressures,
airflows, and temperatures for energy efficiency.

Simplicity and Collaboration

Design, install, commission, and maintain the system easily.
Ensure collaboration with other control systems like lighting and
sunscreen for effective climate control.

FAQ

Q: How can I download the Environmental Product Declaration

(EPD)?

A: The EPDs for all supply air diffusers in the INSQAIR series
can be downloaded via www.epdhub.com, an international platform for
verified EPDs.

Q: What is the noise level of the ISQ-F diffuser?

A: The noise level is below 30 dB(A) up to 125 l/s at 100 Pa,
ensuring a quiet operation.

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Quick facts
· A supply air diffuser with room climate controller designed for reduced energy usage at climatisation of offices, care facilities and, schools
· Installation efficient – Built-in room climate controller – Built-in motor- controlled airflow valve – Built-in and configured sensors
· Exceptional sound and flow performance
· Draft-free even with cold supply air
· Adjustable air distribution pattern
· Network connection
· Bluetooth® for access via LINDINSIDE
· Environmentally certified with registered EPD
· Design for efficient transportation using a minimum of packaging material

ISQ-F
Exposed active supply air diffuser
Demand-controlled ventilation can reduce energy use by creating an optimal indoor climate when and where it is needed. With INSQAIR®, a series of smart supply air diffusers, the focus has been taken on simplicity, maximum flexibility and digitization.
Performance, a careful choice of materials, pre-mounted sensors, Bluetooth® and network connection makes ISQ-F a quiet and smart supply air solution also for the future.

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ISQ-F

Why INSQAIR® and ISQ-F?
INSQAIR® = INnovative Smart Quiet AIR
INSQAIR is a series of supply air diffusers from Lindinvent that share solutions to achieve an installation-efficient and high-performance climate control. Several technical solutions have resulted in international patents.
Simplicity and performance
A unique technical performance. Easy planning, easy installation, easy commissioning, and easy user interface makes the INSQAIR product series optimal for cost-effective and sustainable indoor climate control.
Lowest Life Cycle Cost (LCC)
A system based on demand-controlled ventilation and under-tempered supply air has the lowest investment and life cycle cost according to several surveys.
Increased productivity and efficiency
Cooling with air leads to increased air volumes compared to a solution based on cooling baffle. With increased air volumes, staff efficiency increases by up to 8 % according to the Harvard study “Economic, Environmental and Health Implications of Enhanced Ventilation in Office Buildings”.
Maximum digitization
The starting point is an architecture for wired network communication (CAN) where control units are equipped with Bluetooth®. Measurement data is accessed via API, Modbus, HTTP, and a smartphone app. The platform makes real estate data meaningful, enabling digitization and cloud solutions.

Sustainable design
All products in the INSQAIR series have been designed with sustainability and good environmental choices in mind. The design has also been optimized to be able to ship the products efficiently and with a minimum of packaging.
Environmental Product Declaration – EPD
All supply air diffusers in the INSQAIR product series have EPDs. Ours can be downloaded via www.epdhub.com which is one of the international systems for third party verified EPDs. An EPD is based on the ISO 14025 method for Life Cycle Assessment of a product’s environmental impact. Suppliers contribute to improved environmental declaration of buildings by providing EPDs.
Extreme flexibility
With Lindinvent’s supply air diffusers, an attractive indoor climate can be achieved without installing water-borne cooling. This leads to increased flexibility when remodeling is needed. The active diffuser’s integrated sensors minimize the need for cabling. In many cases, walls can be erected or moved without having to reroute cables. Remodeling projects are also simplified by the fact that active devices in a flow area can be served from different supply air ducts.

Content
Why INSQAIR® and ISQ-F? System requirements Construction parts Functions ISQ-F connections Accessories & extra functions InOffx® Communication Easy and fast installation Dimensions Technical specifications Connection box CBD Pressure, flow & sound level Additional documentation

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Quick data ISQ-F
· Recommended flow range: Between 5 and 125 l/s

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· Sound performance:

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Below 30 dB(A) up to 125 l/s at 100 Pa

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· Height: 336 mm

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INSQAIR®

System requirements

Presence and level of activity
Home office, sick leave, holidays, and external assignments are all reasons that contribute to variations in the degree of presence. To limit energy use, a function must ensure that the total airflow is always adapted to the actual need. This minimizes the energy required to drive the air and reduces the amount of air that needs to be heated or cooled to maintain the correct room temperature.
Free cooling without cold draft
To minimize the need for, and thus the cost of, added cooling, the highest possible cooling effect should be obtained from under-tempered supply air. This requires a diffuser that provides good mixing with room air even at low supply air flows. The risk of cold draft prevents many systems from being able to reduce air flows and at the same time work with strongly under-tempered supply air. With good heat exchange, a heating battery is rarely needed. From Stockholm and southwards, it is almost 8000 h/year when no added cooling is needed. In Lulea, there are only about 250 h/year when outdoor air for free cooling is not available.
Right pressure and right temperature
Duct pressures, airflows, and temperatures must be continuously optimized to achieve the lowest possible energy use.

Simplicity and collaboration
Smart climate control should be easy to design, install, commission, and maintain. Systems for lighting control and sunscreen control must be able to operate in collaboration with other installations for climate control.
Versatility and performance
Room climate control should be part of a system solution that efficiently and sustainably delivers a good indoor climate when and where it is demanded.
· Large flow range (Supply and extract air) · Low noise level even with high airflow and
high duct pressure · Draft-free environment even with severely under-
tempered supply air and a low airflow · A compact design that simplifies installation work · Easy integration and deployment of accessories · Diffusers with an adjustable air distribution pattern · Smart local control and optimization functions · Parent functions for optimization and debugging · Robust and reliable communication between devices · Multiple and intuitive user interfaces · Commissioning via app and Bluetooth® · Good environmental choice in all aspects
Solutions based on the INSQAIR product series might be the world’s most versatile and thus useful systems for room climate control at workplaces. Consultants, installers, integrators, operating technicians, tenants, and property owners shall feel safe with their choice of system now and for future requirements.

conference room with ISQ
Room climate control based on temperature, presence detection and carbon dioxide content.
· 10 – 250 l/s (ISQ-F or ISQ-200) · Silent regulation · No additional dampers · No wall mounted sensors
The CO2 sensor is retrofitted, as an accessory, in one of the diffusers without additional cabling and costly integration. The sensor is used for air quality control but also to analyze the presence level. Via the content of carbon dioxide, the number of people in a room can be calculated. Integration with room booking systems enables the release of “non-shows” for new bookings.

Konference room with active diffusers.

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ISQ-F
Construction parts

ISQ-F is a rectangular exposed supply air diffuser intended for horizontal mounting. Two air distributor plates provide a radial distribution pattern that mimics the distribution patterns from circular diffusers.

A patented motorized airflow valve. The valve is built around permeable fiber material and designed for silent regulation even at high duct pressures and high air flows.

Movable lamellas in the inlet to the diffuser part widen or narrow the airflow passage following changes in the airflow. A high air speed and thus a high air mixing capacity is maintained over the entire flow range. Each lamella can be blocked individually for an adjustable air distribution pattern.

A patented flow measuring device. The meter is adapted for quiet regulation and a large flow range even at higher duct pressures. The location of the measuring device decreases the need for a straight section before the diffuser. The diffuser can, for example, be mounted directly after a 90° bend.

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Diffuser plate with control unit
· Removable plate with suspension device · Bracket for room climate controller with sensors
and Bluetooth® · Openings for sensor detection · Holder for room temperature sensor
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INSQAIR®

Functions

Airflow control
The airflow is regulated by the motor-controlled air flow valve. A high air velocity from the diffuser is maintained also at low airflow by a self-acting gap opening. Air distributor plates in the diffuser provide an air pattern that mimics circular diffusers. The air distribution pattern is adjustable. Airflow is measured via the built-in flow sensor.
Room climate control
The built-in room climate controller continuously controls the room for optimal function. This applies to air volumes but also additional heating or cooling. In the event of absence, the diffuser works towards an operating mode that allows greater temperature fluctuations and the use of stored energy in the building’s frame structure. ISQ-F delivers the desired room climate by itself or in collaboration with several diffusers.
Temperature and air quality measurement
The diffuser is equipped with both a room- and a duct temperature sensor. A carbon dioxide- and humidity sensor is optional. The room temperature sensor is placed at the edge of the diffuser plate. The placement provides a more accurate and faster value than that from a separate wall-mounted sensor.

Presence detection
Presence flow, economy, and comfort mode as well as lighting control are functions supported by the integrated occupancy detector with 200 detection zones. Presence detection can be used to control air handling units.
LINDINSIDE and Bluetooth®
The diffuser is equipped with Bluetooth® for communication via Lindinvent’s mobile application LINDINSIDE. Via the app, operating values can be read and set points can be changed. Bluetooth® also enables connection to other external devices.
Network communication
Active diffusers are connected to other controllers to form a local area network (a CAN loop). All devices are addressed with a unique node ID. The CAN loop is in turn connected to Gateway NCE for communication with Lindinvent’s central unit or another parent system.

ISQ-F Connections

24 VAC + CAN

Holder for plug-in Expansion

circuit board

module

· GQH-I (CO2 & humidity sensor) · GM-I (Formaldehyde sensor)

External presence sensor

PIR

Exposed active supply ISQ-F with

air diffuser

connection box CBD

LBINluDeItNooStIDh®E Bluetooth®
Bluetooth® for local access via mobile application LINDINSIDE etc.

24 VAC + CAN

I2C

Connection for IC2 bus

RELAY

Control signal to relay for lighting

AOUT Adjustable function

AIN Adjustable function

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ISQ-F

Accessories
Flow balancing
Airflow control unit DCV-BLb is used for extract air balancing.
Carbon dioxide & humidity sensor
The expansion card GQH-I or one of Lindinvent’s other carbon dioxide sensors is easily mounted afterward.
Lighting control
Relay box CBR enables double relay control via a push button, presence detection, and a selected lighting function. See SBDb for DALI control.
Valve actuator control
Valve actuator A40405(NC) or A41405(NO) for control of additional heat from radiators.
Surface temperature control
Sensor unit GT-S for valve actuator control with radiator temperature measurement.

Electric radiator control
Control box CBT for additional heating via heating batteries or electric radiators.
Air fan cooling
Additional cooling is regulated via control box CBF-E or CBF-S.
External presence detector
Presence detector GO-C or PD-2400 provides options regarding placement for the desired coverage.
Setpoint adjuster
CAN-connected user panel for wall mounting DRP. The panel can be configured to adjust the setpoint for room temperature or temporarily activate forced ventilation in the room. See also INOFFIX ® below.

INOFFIX®
Scan QR codes placed in the facility or on equipment with the smart phone app InOffix®. Lindinvent offer a number of smart solutions for a smart and more efficient property. Learn more at inoffix.com
Functions:
· Adjust temperature · Adjust sunscreen · Book rooms or order offered property services · Put in a cleaning request · Deviation rapport · Surveys · Check in/out · Room info

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INSQAIR®

A system solution with LINDINSPECT

Visualization tool LINDINSPECT®
LINDINSPECT® is a powerful web-based tool that enables a cohesive system environment for overall administration and visualization of everything from control equipment to sun protection and lighting control. Controllers are monitored and displayed on plan views with their climate data. Deviating values are marked. Operating conditions are indicated graphically.

API
Lindinvent’s REST-based API can be accessed for data that can be used by third-party applications. Lindinvent’s app InOffix® uses this API.
Modbus TCP or Modbus RTU
Individual control units can also be accessed in a system setup without LINDINSPECT®. Connection to an external superior system is made via Gateway NCE and then always either via Modbus TCP or Modbus RTU.

Plan view – LINDINSPECT®.
LINDINSIDE
The smart phone app LINDINSIDE allows connection via Bluetooth® directly to individual control units. Authorized personnel can identify other Bluetoth® units to easily make settings or read values using a smartphone. Data is stored in the cloud for easy access.
Bluetooth®
Additional communication possibilities are created via Bluetooth®.

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App LINDINSIDE.
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ISQ-F
Easy and fast installation
A complete unit
ISQ-F, which includes the plenum box, is delivered and installed complete as a unit.
Suspension
ISQ-F is delivered with two suspension arms. The maximum length of the arms is customizable upon order. The top side of the diffuser is equipped with a blind rivet nut for suspension using a threaded rod.
Mounting handles
The diffuser is lifted and mounted with cardboard protection, cover profiles, and mounting handles robustly attached. Handles and protection are not removed until the unit is correctly fitted into the ceiling structure.
Connection box CBD
All wiring to ISQ-F is done via connection box CBD. The box is delivered connected to the diffuser. CBD is used both for connecting accessories and for connecting the diffuser to a CAN-loop with the voltage supply.
Dimensions (mm)

The tension strap, which holds the mounting handles and protective cardboard with cover strips in place, is only removed when the unit is lifted and anchored to the ceiling. Protective carton is left
until it is time for commissioning.

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INSQAIR®

Technical specifications

Material
Diffuser part and plenum box: Powder-coated steel sheet as standard. The unit can also be ordered in an electro-galvanized version. This surface treatment is not homogeneous, sanding marks may appear. Airflow valve (housing), distributor plates, measuring device, and lamellas: Thermoplastics (PS, PP) See the product’s chemical content assessment (Byggvarubedömningen) for a report on constituent materials. Net weight ISQ-F: 11 kg
Paint Colour
RAL 9003. Other colours may be ordered; please state RAL number.
Duct connection
Duct socket: Ø 200 mm Notice: Connection via a flexible aluminum hose or push nipple is recommended.
Temperature limits
Operation: 10°C to 40°C; <85% RF Storage: -20°C to 50°C; <90% RF
Cable (16-conductor)
ISQ-F is delivered with an attached cable to connection box CBD. The standard length is 1 m. Maximum length at 10 m.
Electrical system
Supply voltage: 24 VAC
Effect
Stand by mode 2 VA Control mode: 4 VA (approx. 200­300 h/year)
Communication
CAN communication via signal cable with conductors also for voltage supply (shielded FLAQQBR: 2×1+1x2x0.22)
Radio communication
Bluetooth® 2.4 GHz Listen mode only for calls from app or similar. Beacon functionality etc requires transmission.
IP-class
Complies with IP 22
CE-marking
Complies with EMC and the low voltage directive. A certificate of compliance is available at lindinvent.com
Presence detection
PIR: Passiv IR-detector with 200 zones Detecting area: 107o x 107o
Room temperature measurement
Temperature sensor of the type NTC. Accuracy temperature: ± 0.5 K

Supply air temperature measurement
Temperature sensor of the type NTC. Accuracy temperature: ± 0.5 K
Carbon dioxide measurement (option, expansion module)
Card slot at the control unit for easy retrofitting. Automatic Background Calibrating sensor Measuring range: 400 – 10 000 ppm Accuracy: ± (30 ppm + 3%)
Relative humidity measurements (option, expansion module)
Card slot at the control unit for easy retrofitting. Measuring range: 0 – 100 % RH Accuracy (at 25°C and 50% RH): Relative humidity: ± 5% RH Absolute humidity: ± 1g/kg Condensing point: ± 1 K
Air flow measurement and adjustment
ISQ-F is equipped with an airflow sensor. Measuring intervall: 5 – 125 l/s; sound level in dB (A) according to the sound pressure level diagram for ISQ-F Accuracy: ± 5% or minimum ± 2 l/s Minimum straight duct section in front of the diffuser: – after 90° bend: 0 mm / no straight section required – after T-piece: 400 mm – at one-step dimensional change: minimum 200 mm – at two or more steps of dimensional change: minimum 400 mm
Pressure measurement
Duct pressure is calculated based on the air flow and the degree of valve opening. Accuracy: ± 10 Pa (minimum valve opening at 20% and minimum airflow at 10 l/s); Pressure range: 10 – 200 Pa
Connection box CBD
· Magnets on the enclosure bottom for easy mounting · Terminal for the 16-pole ISQ cable · Terminals for 24 VAC + CAN (CAN loop connection) · AIN1 (general, 0 to 10 VDC) · Terminal for lighting relay box CBR · AOUT1 (general, 0 to 10 VDC) · DIN1 with fuction PULL-UP [+5] ON (default) or OFF · Terminal for 24 VAC & TRIAC (On/Off radiator valve
actuator control). Maximum load TRIAC: 10 thermal actuators of 1 W each. · AUX terminal for generic power supply (+5V) · Terminal for I2C bus

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ISQ-F

Pressure, flow & sound levels
The sound pressure levels LPA in the diagram corresponds to A-weighted sound level in the reverberation zone with 10 m2 equivalent sound absorption area. This corresponds to 4 dB acoustic attenuation in a normally damped room with 25 m3 room volume. See the table with correction factors depending on type of room. For throw lengths, see the design instructions for INSQAIR®.
· Sound power level per octave band (Lw) = LP10A + K0 [dB] · LP10A = Sound pressure level [dB (A)] from diagram · K0 = Correction factor/octave band [dB] from table · pt = Total pressure drop · Self attenuation factor from table
Measurements of sound pressure and sound power have been carried out according to ISO 3741 and ISO 5135. Measurements of intrinsic sound attenuation have been carried out according to SS-EN ISO 7235:2009.

Sound level correction for room type [dB]

Room volume 25 m3 25 m3 25 m3 150 m3 150 m3 150 m3

Room type hard
normal subdued
hard normal subdued

Correction +2 dB 0 dB ­2 dB ­3 dB ­5 dB ­7 dB

Diagram ISQ-F, Sound pressure level L dB(A) P10A 400 300
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Correction factor, K0 [dB]

ISQ-F 200

Octave band [Hz] 63 125 250 500 1K 2K 4K 8K 6 9 8 1 -4 -9 -10 -7

Self attenuation [dB]

ISQ-F

Octave band [Hz]

Opening 63 125 250 500 1K 2K 4K 8K 20% 16 12 19 22 23 20 22 25 100% 11 7 14 17 18 15 17 20

Tolerance [dB]

ISQ-F ± [dB]

Octave band [Hz] 63 125 250 500 1K 2K 4K 8K

200

33222222

Pt [Pa]

10 10
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Open

50
Air flow [l/s] 10

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INSQAIR®

Additional product documentation for ISQ-F
Download available in ISQ-F product page at lindinvent.com

Documents Installation instruction Start-up instruction Maintenance instruction External connection diagram Building material declaration End-user info Modbuslista AMA-text Design instructions

Comments Note: Only intended for horizontal installation. Instructions with assembly steps. A guide on how to use the app LINDINSIDE to start-up commisioning of ISQ(-F/-160/-200/-V). Regarded as maintenance-free. ISQ(-F/-160/-200/-V) and connection box CBD. Environmental Product Declaration registered. Material declaration assessed by Byggvarubedömningen. A brief introduction to Lindinvent’s system for smart ventilation. The latest modbus list for ISQ (-F/-160/-200/-V). Descriptive text according to AMA standard. For the INSQAIR® product series on flows, air distribution patterns, CFD and type room solutions.

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References

• INOFFIX
• Ventilation on demand - smart solutions, low life cycle cost
• Ventilation on demand - smart solutions, low life cycle cost

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