Recessed. Air Curtain. Fig 1. Recessed air curtain

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Nelson Ramsey
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1 the future of space conditioning recessed an FTF Group Company

2 Recessed Introduction These recessed s create an air barrier, which helps to prevent cold draughts thus creating a comfortable indoor climate. Energy losses through openings are reduced, which means considerable savings. When the doors are closed, the will contribute towards the heating around the entrance area if required. The heated air from the unit will also help to dry any water/sleet dragged into an entrance, as such assisting in creating a safer environment. Fig 1. Recessed air curtain Although s emit warm air, the main purpose of an Air Curtain is not to provide general heating in a space. For more information with regard to general heating products, please contact our sales team for advice and information. All Frenger s are designed with energy efficiency in mind and with the introduction of Ecopower technology, end users can now benefit from energy saving and climate enhancing innovation. The s are available in two models; is suitable for mounting up to 3m from floor level and Model B up to 4m. Features Low sound levels Corrosion proof galvanised steel sheet housing Option of non-standard colours Optimized airflow technology Discreet linear grille accommodates for air intake and outlet Units can be mounted together to create longer runs IP21 Rated Available in electric, water or ambient versions Supplied tangential fans 3 way valve supplied with water units FRA model with optional filter on surface mounted water and ambient units FRA models includes low inertia high efficiency energy heating coils in electric heating units FRB models available with 82/71 C and 60/40 C low-grade water coils Air curtains by Frenger in partnership with Thermoscreens 1

3 Design Finish The Frenger recessed unit is designed for easy and discreet installation within a ceiling void. The only visible part of the Air Curtain when mounted is the combined inlet/outlet grille. This contemporary and durable looking aluminium profile is finished RAL 9010 (white) as standard. Other RAL colour for the grilles finishes are available upon request. Each air curtain housing is constructed of corrosion resistant galvanised sheet steal. Technical Data Ambient Part No. Heat output (KW) Loading (A) Max velocity (l/s) Max air volume (m³/h) Weight (Kg) Size (LxWxH) mm Grille size (mm) Supply (50Hz) Mounting Height (m) FRA-100A R x 347 x x V ~1P&N FRA-150A R x 347 x x V ~1P&N FRA-200A R x 347 x x V ~1P&N Model B FRB-100A R x 436 x x V ~1P&N FRB-150A R x 436 x x V ~1P&N FRB-200A R x 436 x x V ~1P&N Electric Part No. Heat output (KW) Loading Max velocity Max air volume Weight (A)/phase (l/s) (m³/h) (Kg) Size (LxWxH) mm Grille size (mm) Supply (50Hz) Mounting Height (m) FRA-100E R 4.5/ x 347 x x V ~ 3P&N FRA-150E R 6/ x 347 x x V ~ 3P&N FRA-200E R 9/ x 347 x x V ~ 3P&N Model B FRB-100E R 6/ x 436 x x V ~ 3P&N FRB-150E R 9/ x 436 x x V ~ 3P&N FRB-200E R 12/ x 436 x x V ~ 3P&N LTHW Part No. Heat output (KW)* Loading (A) Max velocity (l/s) Max air volume (m³/h) Weight (Kg) Size (LxWxH) mm Grille size (mm) Supply (50Hz) Mounting Height (m) FRA-100W R x 347 x x V ~ 1P&N FRA-150W R x 347 x x V ~ 1P&N FRA-200W R x 347 x x V ~ 1P&N Model B FRB-100W R x 436 x x V ~ 1P&N FRB-150W R x 436 x x V ~ 1P&N FRB-200W R x 436 x x V ~ 1P&N *Output based on a Water Flow/Return Temperature of 82/71 C with an air entering temperature of 20 C ** Sound pressure levels (dba) at 3m, as given in our brochure, are for a single air curtain mounted at its maximum mounting height, operating in a room with average acoustic characteristics as defined in CIBSE Guide B5 (reverberation time 0.7s) and a room size equivalent to 8 air changes per hour (ac/h). Care needs to be taken when selecting air curtains for an installation as noise levels can be several db higher if the mounting height is reduced, if the room is more live (i.e. hard surfaces, no furnishings or absorbent materials), if the room is smaller than 8 ac/h equivalent or a combination of these factors. Noise levels will also increase if more than one air curtain is installed at the same doorway (e.g. + 3dBA for 2 equal point sources: direct field). 2

4 Mounting & Details 301 B Ceiling Level 353 C Fig 2. A model dimensions Electrical supply inlets M6 inserts 22 A LPHW connections Rp1/2 (1/2 BSP female) m m-140 2m-150 Indicative only - not to scale FRA-100R FRA-150R FRA-200R Cut-Out in ceiling A(mm) B(mm) C(mm) Length(mm) Width(mm) * Grille inner core dimensions Please note that the ceiling void for the FRA range of recessed air curtain must be sufficiently large and freely ventilated so there will be an adequate supply of ventilation air (m³/hr) to the unit, see table below: FRA100R FRA150R FRA200R Required air flow within ceiling void (m³/hr) Effective free area of ventilation grille for an enclosed ceiling void (cm²)

5 Model B Ceiling Level 436 Fig 3. B model dimensions Electrical supply inlets suitable for 25mm gland - 2m electric heating unit only Holes for M10 drop rods B C Electrical supply inlets suitable for 25mm gland (1m & 1.5m) A B LPHW connections Rp 3/4 (3/4in. BSP female) FRB-100R FRB-150R FRB-200R Cut-Out in ceiling A (mm) B (mm) C (mm) Length (mm) Width (mm) 1150 N/A Please note that the ceiling void for the FRB range of recessed air curtain must be sufficiently large and freely ventilated so there will be an adequate supply of ventilation air (m³/hr) to the unit, see table below: FRB100R FRB150R FRB200R Required air flow within ceiling void (m³/hr) Effective free area of ventilation grille for an enclosed ceiling void (cm²)

Mounting & Installation Frenger s are designed for mounting over entry doors of heights from 2 up to 3m and Model B from 3 up to 4m from floor level.

Ensure the length of the hole is exact, so that the air curtain will fit through the ceiling cut-out although it may need to be kept on its side and angled upwards to fit.

Clearance holes for M8/M10 threaded rod to enter from above are provided on the top face of the casing (4 or 6 no.

6 Mounting & Installation Frenger s are designed for mounting over entry doors of heights from 2 up to 3m and Model B from 3 up to 4m from floor level. When deciding on the size of an it is vital that the covers the full width of the door for the optimum effect. Fixing Make the cut-out in the ceiling to the dimensions given on the previous pages. Ensure the length of the hole is exact, so that the air curtain will fit through the ceiling cut-out although it may need to be kept on its side and angled upwards to fit. Ensure there is sufficient height clearance in the ceiling void to do this. Alternatively, the ceiling can be fitted after the air curtain has been installed. Clearance holes for M8/M10 threaded rod to enter from above are provided on the top face of the casing (4 or 6 no. depending on product length, for dimensions see previous page - all suspension points must be used for each air curtain) allowing the unit to be suspended. Insert rod through each hole in top and attach onto each fixing bracket at a lower edge of air curtain. Lock rod in place using M8/M10 nut above and below fixing bracket (threaded rod and locking nuts are not provided). Ensure rod does not come below bottom face of unit. Ensure each of the threaded rods are secured to a suitable structure that can support the weight of the unit (for unit weights see previous details).* Fig 4. A model showing droprod fixings * It is the sole responsibility of the installer to ensure that the building fixing points and suspension system used are for the air curtain being installed. For detailed fixing instructions, please refer to our O&M manual Fig 5. B model showing droprod fixings Fig 6. A model of grill 5

7 In accordance with our policy of continuous improvement, we reserve the right to amend any specification without prior notice. Details produced in this brochure may not be copied and are not drawn to scale. E&OE. Frenger Systems Ltd June 2012 V1.3 UK Head Office Frenger Systems Ltd Riverside Road Pride Park Derby DE24 8HY tel +44 (0) fax +44 (0) Australian Office Frenger Systems Level 20 Tower Sussex Street Sydney NSW Australia (0) (0) e sales@frenger.org.au tel +61 (0) Registered +44 fax (0) +61 No e sales@frenger.org.au Registered No Certificate No: FS Frenger is an FTF Group Company Certificate Frenger No: FS is an FTF Group Company Frenger Registered an FTF No. Group Company 20

T-RECESSED RANGE AIR CURTAINS INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS

T-RECESSED RANGE AIR CURTAINS INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING INSTALLATION Thermoscreens Ltd St. Mary s Road Nuneaton Warwickshire