CLIMATE SOLUTIONS

Contents Climate Separation Technology Airflow Technology / Energy Efficiency Computational Fluid Dynamics Control Options / Product Selector Technical & Performance Data Condensing Boiler Range Dimensional Drawings Fresh Thinking in Climate Separation Technology The latest development in a long line of leading technology air curtains, Invisidor CITY incorporates improved structural design and enhanced aesthetic appeal without compromising its award-winning performance. Most importantly, by utilising world class design and engineering, Biddle’s Invisidor CITY now brings energy and cost saving...

Biddle Patented Airflow Technology Laminar Airflow Rectifier Pressure Chamber One of the main functions of an air curtain is to condition outdoor air as it enters the building. For this to be achieved the jet must cover the full width of the entrance, so that it cannot be bypassed by incoming air. However, ensuring the jet reaches the floor level is more difficult, with turbulence at the jet outlet being a critical factor. Along with the TNO wind tunnel facility at Apeldoorn in the Netherlands, Biddle have successfully developed a patented rectifier, which minimises turbulence in the discharge...

Computational Fluid Dynamics An air curtain mounted in a high street store functions very differently from the same unit at a shopping centre or hypermarket entrance. By looking at how the air curtain reacted with different buildings rather than considering the unit alone, Biddle was able to design an effective and efficient product. Biddle understands that various aspects of the air curtain design contribute to its effectiveness and efficiency in different ways. Along with Warwick University, Biddle developed a Computational Fluid Dynamics (CFD) model. By using this model, with information on...

Control Options With quick project turn-around times, any reduction in installation time is greatly beneficial. Biddle therefore supply a standard controls package which is simply connected between the unit and controller via a low voltage plug-in cable. Electronic touchpad controllers provide localised on/off, and three-speed control – as well as two heat settings on electric units. Each controller can control up to ten units, wired as master/slave. In all cases the Invisidor has volt free contacts for input of remote switching devices, namely, • Timers • Thermostats • Door switches • BMS etc...

Technical & Performance Data Invisidor CITY • Aesthetically designed unit • Mounting heights up to 2.7m • Incorporates patented Invisidor technology • Suitable for most high street applications Water Heating Invisidor City Electrical Heating Optimum Door Width Unit Width Maximum Installation Height A/B Heating Capacity ** (Max/ Controlled) Air Volume Water Flow Rate (Max) Coil Hyd Pressure Drop (Max) Electrical Supply Max Power (Motor/Elec Heating) Max Running Current Noise Level at 3m* * Typically NR = dB(A) – 4 ** Heating Capacities A/B A: Denotes the maximum heating capacity with 82/71°C flow...

Technical & Performance Data Invisidor CITY Plus • Choice of casing styles • Mounting heights up to 3.2m • Energy efficient • Simple control • Suited to medium size high street retail outlets Water Heating CITYPLUS CITYPLUS 100 W 150 W Invisidor City Plus Electrical Heating Optimum Door Width Unit Width Maximum Installation Height A/B Heating Capacity ** (Max/ Controlled) Air Volume Water Flow Rate (Max) Coil Hyd Pressure Drop (Max) Electrical Supply Max Power (Motor/Elec Heating) Max Running Current Noise Level at 3m* * Typically NR = dB(A) – 4 ** Heating Capacities A/B A: Denotes the maximum...

Technical & Performance Data Invisidor CITY PowerPlus • High performance unit • Mounting heights up to 3.7m • Suitable for malls and large retail outlets • Incorporates patented Invisidor technology Water Heating CITY Electrical Heating CITY POWERPLUS POWERPLUS POWERPLUS POWERPLUS POWERPLUS POWERPLUS POWERPLUS POWERPLUS Invisidor City Plus Optimum Door Width Unit Width Maximum Installation Height Heating Capacity ** (Max/ Controlled) Water Flow Rate (Max) Coil Hyd Pressure Drop (Max) Electrical Supply Max Power (Motor/Elec Heating) Max Running Current Noise Level at 3m* * Typically NR = dB(A)...

Condensing Boiler Range • For use with lower water temperatures • Energy efficient • Incorporates patented Invisidor technology • Choice of casing styles • Choose from 1500mm, 2000mm or 2500mm long units Invisidor CITY CB Invisidor City CB Model Reference Maximum Installation Height (m) Optimum Door Width (m) Heating Capacity/Off Coil Temperature (kW/°C) Speed 1 Invisidor CITY Plus CB Invisidor City Plus CB Model Reference Maximum Installation Height (m) Optimum Door Width (m) Heating Capacity / Off Coil Temperature (kW / °C) * Denotes casing style to be added to complete product reference. Performance...

Dimensional Drawings CITY/CITY Plus CITY PowerPlus Ceiling Recessed Model (R) Dim CITY/CITY Plus CITY PowerPlus Number of Spigots per unit Spigot 160 Dia *Add 27mm for hanging brackets Ceiling Recessed Model (R) Dim L H CITY/CITY Plus CITY PowerPlus CITY/CITY Plus CITY PowerPlus CITY/ CITY/ CITY Plus PowerPlus

Specifications Casing Casings are manufactured from zinc coated steel, extra strengthened to minimise vibration. All models have inspection/access panels on the underside of the unit. Unit casings are finished in White (RAL 9010). The free hanging model is supplied with sectional inlet grilles that have a grey/white finish. Other RAL colours are available on request. Grilles All units are supplied with a patented rectifier grille for the discharge air. Inlet grilles have filters fitted directly behind the grille blades for ease of maintenance. All rectifiers and grilles have an Aluminium finish....

• Biddle Air Systems Limited St. Mary’s Road, Nuneaton Warwickshire CV11 5AU Tel: +44 (0)24 7638 4233 Fax: +44 (0)24 7637 3621 Email: [email protected] http://www.biddle-air.co.uk • Biddle B.V. P.O. Box 15 NL-9288 ZG Kootstertille The Netherlands Tel: +31 (0)512 335555 Fax:+31 (0)512 331424 • Biddle GmbH Emil - Hoffmann - Straße 55-59 50996 Köln Germany Tel: +49 (0)2236 96900 Fax:+49 (0)2236 969010 • Biddle 21 Allée de Vendanges 77183 Croissy Beaubourg France The information given in this brochure is, to the best of our knowledge, correct at the time of going to print. However, Biddle Air...