Decentralised MVHR up to 174 l/sec (626 m3/hr) flow rate
Excellent heat recovery efficiency up to 90%
Integral CO2 sensor
Excellent thermal insulation - thermal transmittance class T2
Low noise from just 25.8 dB(A)
Complies with BB93, BB101 and ErP 2018
3 year warranty
The Susurro 400 offers discrete decentralised ventilation with heat recovery for classrooms and offices. Thanks to the latest in cross-counter-flow heat exchanger technology, Susurro 400 can recover up to 90% of the otherwise wasted heat, which significantly reduces ongoing heating bills.
Susurro offers: low specific fan power (SFP), excellent air circulation, automatic 100% bypass, integral CO2 sensor and the option for additional frost protection facilities. All Susurro units incorporate exceptional casing insulation (40mm) to minimise thermal bridging and achieve extremely low noise levels. These low noise levels make them the perfect option for a school ventilation system.
Additional benefits include low energy, low noise EC fans, NFC connectivity with a smartphone, high grade air filters, BMS connectivity (Modbus), slim design for efficient use of space, bypass facilities and unique capillary tube system for optimal laminar air flow and enhanced Coanda effect.
The unit can be easily controlled and adjusted via the touchscreen controller and Building Management Systems (BMS). This real time monitoring ensures that changing conditions are identified and responded to, curtailing the regularity of servicing and running costs. Furthermore, additional unit information can be quickly downloaded via a smartphone thanks to NFC connectivity.
In addition, all Susurro units are compliant with the Energy Related Products Directive (ErP) 2018, Building Bulletin 93 and Building Bulletin 101, providing specifiers the opportunity to have fully compliant MVHR systems installed in schools and commercial premises.
Decentralised Mechanical Ventilation with Heat Recovery unit
Optional built-in electric pre- and post-heater and built-in water post-heaters available
Automatic, 100% summer bypass
Unique capillary tube system for optimal laminar air flow and enhanced Coanda effect
Weekly and monthly ventilation profile programming available
Pre-heater assisted frost protection
Touch screen controller offers easy unit control and adjustment
NFC connectivity - download unit information via a smartphone
BMS connection via Modbus
Integral CO2 sensor ensures demand controlled ventilation as standard
ISO ePM1 60% / ISO Coarse 60% (F7/G4) class air filters as standard. ISO ePM1 70% / ISO ePM10 60% (F8/M5) options available. - ISO 16890 compliant
Real time filter monitoring for effective maintenance
Slim design is ideal for both new-builds and retrofits and ensures optimum use of space
Compliant with BB101:2017 and BB93:2017
H 397mm x W 1835mm x D 942mm
Weight: 92 kg
Susurro 400 Consultant Specification
UNIT SPECIFICATON - SUSURRO 400
The mechanical ventilation with heat recovery unit shall be
the Susurro 400 as manufactured by Airflow, shall be
sized as indicated on the drawings and shall be in
accordance with the specification.
The unit shall have a slim design, for ceiling mounting installation,
ideal for both new builds and retrofits. The unique capillary tubes
system for extract and supply air flow paths ensure a smooth
conversion from turbulent to laminar flow and enhance Coanda
effect. The incoming air shall be supplied at high velocity into the
room ensuring effective mixing of the incoming air and ambient
room air. This mixing process shall ensure high quality air
throughout the room being supplied as a draught-free zone below
ceiling height due to the Coanda effect.
The unit shall be fully insulated with 40mm thermal insulation,
thermal transmittance class T2, to provide optimum thermal and
acoustic performance and shall include a cross counterflow plate
heat exchanger with a 90% thermal efficiency. The Aluminum heat
exchanger shall be tested in accordance to EN308 standards and
have Eurovent certification. As standard, the unit shall have an
ISO ePM1 60% (F7) filter on the supply side and ISO Coarse 60%
(G4) filters on the extract side, tested and compliant to ISO 16890
standard. The optional ISO ePM1 70% (F8) and ISO ePM10 60%
(M5) filters shall provide additional protection against harmful
particles and create ultra-hygienic indoor climate.
The unit shall have low energy consumption
electronically commutated (EC) fans providing a quiet operation
and achieving low specific fan power values ensuring long
term savings on operating costs and shall be suitable for
single phase supply. The sound power level requirements
shall be detailed by the unit's manufacturer and in accordance
with the ventilation equipment operation schedule.
The unit shall benefit from a built-in carbon dioxide (CO2) sensor
for demand controlled ventilation. This significantly reduces
the energy consumption by automatically varying the fans
speed proportionally until the desired set points are met.
The unit shall be equipped with an automatic, 100%
stepless bypass facility which totally isolates the heat exchanger
so that no air passes through it. This prevents overheating the
ventilated room in the summer season. The unit shall comply with
BB93 and BB101. The unit shall provide ventilation in a single
large room with no air duct required when installed directly on an
external wall (decentralised ventilation unit) and shall have
250mm (2 ports) duct diameter for horizontal or top connections.
The unit shall be Susurro 400 as manufactured by Airflow.
- Up to 625m3/h (174l/s) @0Pa (free flow)
- Decentralised heat recovery ventilation
- Up to 90% thermal efficiency and low SFP
- Compliant with BB101:2017 and BB93:2015
- NFC technology
- Excellent thermal insulation (thermal transmittance class T2)
- Automatic, 100% summer by-pass
- Integral temperature and CO2 sensors
- Low energy EC fans
- Low noise level (35dB (A) at nominal air flow)
- ISO ePM1 60% (F7) and ISO Coarse 60% (G4) filters as
- Optional ISO ePM1 70% (F8) and ISO ePM10 60% (M5) filters
- Tubular system for optimal laminar air flow
- Slim design with low installation height for efficient space usage
- Digital touch-screen controller
- Two versions available: Susurro and Susurro Dezajno
- CFD (Computational Fluid Dynamics) simulations available to
tailor specific projects
- Optional enthalpy heat exchanger
- Optional built-in pre or post heater (electric, LPHW or 3-row
change over coils for comfort heating and cooling)
The heat recovery ventilation unit shall provide effective and continuous control of ventilation rate, the integrated heat exchanger and summer by-pass actuator and optional heating/cooling coils facility.
The unit shall be equipped with completely automated control system, optimising its operation so as to achieve minimum heat losses and the most economical operation. The unit shall be designed to be operated in a dry indoor environment (relative humidity not exceeding 80%) and at an ambient temperature in the range from +5°C up to +40°C.
The ventilation unit shall have a variable speed control depending upon the control option chosen in the specification.
The unit shall have be easy to commission the supply and extract fans independently having fully variable fan speed control. Each fan shall have stepless variable speed control (0%-100% fan speed setting, in 10% increments), 0-10V voltage signal, IP54 protection and insulation class B.
The unit shall have a Near-Field Communication (NFC) facility that enables the user (by holding a compatible smartphone near the unit) to download the product datasheet and directly contact Airflow when undertaking maintenance of the unit.
The Susurro 400 unit shall be controlled by one of the following:
- Touch screen digital controller
- Building Management System (BMS) via Modbus RTU
- On-demand ventilation through built-in CO2 sensor; this shall help maintain an oxygen rich and healthy indoor air environment even if the room is fully occupied
- Additional external sensors achieving on-demand ventilation
- Additional switches (e.g. manual boost switches)
SUSURRO TOUCH SCREEN DIGITAL CONTROLLER
The Susurro touch screen digital controller is
compatible with the Susurro heat recovery units
range. This advanced controller comes with intuitive
commissioning and user friendly functions. A weekly or
monthly scheduling can be set, guaranteeing that the air
remains fresh at all times when it is occupied whilst lowering
the flow rate of the unit when the room is not in use. The
Susurro controller also benefits from the following features:
- Touch control
- Stepless regulation of preheating and posheating options
- Indication of filter clogging
- Boost function - intensive air flow at maximum power for a
- Connection to BMS via Modbus RTU
- Optional connection of sensors: CO2, RH, VOC (0-10V)
- Stepless by-pass (temperature control: free cooling,
- Offset fan adjustment (over-pressure and under-pressure)
- On-demand control via humidity, CO2 and VOC sensors
- Separate fan control for ease of commissioning - stepless
fans control (0-10V)
- Freecooling functions - night ventilation (cooling)
- Occupancy function - reducing ventilation according to the
- Weekly or monthly ventilation programming allows users to
pre-set the ventilation levels scheduled for different days