Sabre Sickle Fan Assisted Roof Cowls (VSR)

Sabre Sickle Fan Assisted Roof Cowls (VSR) Swept impeller with Aerofoil blades, winglets and serrated trailing edge for optimum performance Fully assembled cowl, separate plate axial fan Optional backdraught shutters and birdguard Moulded from recyclable polymeric material One shot die cast aluminium impeller dynamically balanced for smooth operation Resistant to UV light Speed controllable Thermal Overload Protection for motor protection Operating temperature up to 7 C The latest generation of the Vent-Axia Sabre Sickle Fan assisted roof cowls incorporate the very latest FE2 Owlett plate axial fans supplied separate to the cowl offering improved performance over the previous ranges with up to 7dB(A) reduction in sound and up to 5% improvement in efficiency ensuring the best available fan performance in its class. The advanced blade design is matched to a purpose designed external rotor motor to ensure unrivalled reliability and controllability. All cowl and roof mounting plates are moulded from specially formulated polymeric materials, which are high impact resistant and provide a rigid profile against strong winds and are resistant to UV light. Standard Colour BSA5. Alternative colours are available on request. Suitable for flat or inclined roofs (max. angle 3 ). Sabre Sickle Fan assisted roof cowls are designed for either kerb or purlin box mounting. All sizes are fitted with inlet wire guards, giving protection to BS 848 part 5. Bird guards are available as optional accessories. Design and Development Using a combination of NASA research into wing performance and winglets, coupled with a study of bird flight has enabled the development of the best available Sickle blade profile. Matching this to a purpose designed close fitting casing ensures best use of this blade technology thereby reducing noise and improving the performance in cased axial fans. Impellers The impellers incorporate the latest in Sickle blade aerofoil technology to ensure minimum sound and maximum performance. The motors and impellers are factory matched, statically and dynamically balanced to ISO 94 part, Quality Class G.6.3. Motors The external rotor motors are specifically designed and styled for this range of fan. Ball bearings are greased for life. Sizes 35 7 motors are protected to IP54 against dust and moisture complying with BS EN 6529. to 7, 6 & 8 pole motors are only suitable for operating temperatures of up to 4 C. Electrical The Sabre Sickle Fan assisted roof cowls range is available for either single phase 22-24V Hz capacitor start and run or three phase 38-45V Hz. Motors are fitted with Thermal Overload Protection which should be wired into all controller circuits and into starter contacts to prevent motor damage due to overloading / overheating. Speed Control Units are suitable for speed control by either electronic, voltage reduction or frequency inverters where permissible. For optimum efficiency and controllability Vent-Axia recommend the use of the edemand Inverter controller to give close control via sensors or manual control. Terminal Box An IP54 terminal box is supplied with all models with M2 x.5mm gland entry offering protection against dust and water. Performance The fan performance is in accordance with tests to ISO 58. Sound Levels Fan sound levels are measured in a reverberant chamber in accordance with ISO 3744 Part. Published db(a) figures are free field sound pressure levels at 3m with spherical propagation at a reference level of 2 x -5 Pa (2 micro-pascal). The sound power level spectra figures are db with a reference level of -2 Watts ( pico-watt). To ensure minimum noise levels during speed control, either an auto transformer or edemand inverter speed control is recommended. They have ribbed aluminium body castings for efficient cooling with Motor insulation to Class F (from -4 C to + 7 C). Speed controlled sizes 4

Packing Sabre Sickle Fan assisted roof cowls consist of two elements, a boxed cowl assembly and a plate mounted fan. Fan & cowl are supplied separately to assist with transportation and are quickly assembled on site. Accessories A full range of accessories is available for the Sabre Sickle Fan assisted roof cowls: Electronic Speed Controllers Auto Transformer Speed Controllers edemand Inverter Speed Control D.O.L. Starters Purlin Boxes Backdraught Shutters Bird Guards Roof Attenuators Fan Dimensions (mm) Kg max Dia a b c d e f Kerb detail 2 7 4 737 4 97 6.7 35 7 4 737 4 97 6 2.8 355 7 4 737 4 97 6 3.8 4 8 5 83 466 97 7 9.2 4 8 5 83 466 97 7 24.8 9 75 579 95 3.3 56 9 75 579 95 37 63 23 84 73 5 4 64 7 23 84 73 5 4

Performance Curve 2-355 dia. - 2 & 4 Pole Phase 3 Phase 3 5 4 6 2 Performance Guide..2.3.4.5.6.7.8.9..2.3.4.5.6.7.8.9 IP Motor F.L.C S.C. Volume m 3 /s @ Pa db(a) @ Supply Rating kw Amps Amps Poles rpm Curve 3.m VSR22 23// IP54.2.54 2.6 2 26 VSR24 23// IP54.5.24.96 4 37 2 VSR354 23// IP54.2.54 2.6 4 36 3 VSR3534 4/3/ IP54.2.39.7 4 4 4 VSR3554 23// IP54.3.56 2.24 4 26 5 VSR35534 4/3/ IP54.9.4.6 4 39 6 Volume m 3 /s.29.26.22.8.7 Power Watts 5 8 2 Volume m 3 /s.9.4 Power Watts 46 48 Volume m 3 /s.49.44.37.27 Power Watts 8 24 3 Volume m 3 /s.44.36.29.9 Power Watts 5 5 7 2 Volume m 3 /s.72.64.54.4 Power Watts 32 4 5 62 Volume m 3 /s.79.72.6.49 Power Watts 52 68 76 78 37 45 47 46 48 Sound Power Level Spectra db (ref 2 Watts) 63Hz Hz 2Hz Hz KHz 2KHz 4KHz 8KHz db(a) @ 3.m VSR22 65 7 68 66 64 66 62 55 VSR24 56 63 56 54 53 53 49 4 37 VSR354 7 7 65 6 58 59 55 47 45 VSR3534 7 62 6 6 62 59 5 47 VSR3554 67 7 67 64 58 6 53 45 46 VSR35534 74 66 6 63 64 63 59 53 48

Performance Curve 4-4 dia. - 4 & 6 Pole Phase 3 Phase 3 2 6 4 5 Performance Guide.2.4.6.8..2.4.6.8.2.4.6.8..2.4.6.8 IP Motor F.L.C S.C. Volume m 3 /s @ Pa db(a) @ Supply Rating kw Amps Amps Poles rpm Curve 3.m VSR44 23// IP54.24.5 4.2 4 34 VSR434 4/3/ IP54.23.46.6 4 36 2 VSR44 23// IP54.6 2.9.6 4 32 3 VSR434 4/3/ IP54.54. 4.4 4 3 4 VSR46 23// IP54.9.9 3.6 6 9 5 VSR436 4/3/ IP54.36.66 2.64 6 2 6 Volume m 3 /s.8.74.63.5.35 Power Watts 66 95 2 2 24 Volume m 3 /s.8.74.64.52.38 Power Watts 6 7 9 25 22 Volume m 3 /s.69.63..38.2.99 Power Watts 48 52 53 54 5 Volume m 3 /s.7.63.53.42.26. Power Watts 44 46 48 5 52 53 Volume m 3 /s.6.9.68 Power Watts 65 8 Volume m 3 /s.38.8.99. Power Watts 3 3 36 38 46 47 49 49 4 44 Sound Power Level Spectra db (ref 2 Watts) 63Hz Hz 2Hz Hz KHz 2KHz 4KHz 8KHz db(a) @ 3.m VSR44 72 73 66 62 6 59 54 48 46 VSR434 67 67 6 6 6 59 54 48 47 VSR44 67 69 7 63 63 63 59 53 49 VSR434 72 7 65 65 64 64 59 53 49 VSR46 57 62 59 56 56 56 4 4 VSR436 7 66 6 6 6 58 5 43 44

Performance Curve 2 2-56 dia. - 4 & 6 Pole Phase 3 Phase 2 2 3 7 5 4 8 2 6 Performance Guide.5..5 2. 2.5 3..5..5 2. 2.5 3. IP Motor F.L.C S.C. Volume m 3 /s @ Pa db(a) @ Supply Rating kw Amps Amps Poles rpm Curve 2 2 3.m VSR4 23// IP54.72 3.2 2.8 4 23 VSR34 4/3/ IP54.84.45 5.8 4 34 2 VSR6 23// IP54.27. 5 6 9 3 VSR36 4/3/ IP54.54.96 3.84 6 94 4 VSR564 23// IP54.5 5.6 2 4 33 5 VSR5634 4/3/ IP54.5 2.2 8.8 4 28 6 VSR566 23// IP54.39.8 7.2 6 93 7 VSR5636 4/3/ IP54.58. 4.4 6 9 8 Volume m 3 /s.8.67.53.3.7.92 Power Watts 63 66 67 69 72 74 Volume m 3 /s.96.83.7.56.4...6 Power Watts 62 6 68 72 74 8 8 Volume m 3 /s.8.94.69.36 Power Watts 2 265 28 295 Volume m 3 /s.4.4.89.58 Power Watts 47 52 54 Volume m 3 /s 2.33 2. 2. 2.3.87.67.56.28.4.8 Power Watts 8 83 87 89 9 98 Volume m 3 /s 2.44 2.36 2. 2..86.69..4.86 Power Watts 742 8 84 86 9 92 94 4 44 Volume m 3 /s.55.4.9.97.59 Power Watts 369 394 45 438 458 Volume m 3 /s.8.55.29..47 Power Watts 489 58 542 556 576 5 52 44 47 62 57 5 Sound Power Level Spectra db (ref 2 Watts) 63Hz Hz 2Hz Hz KHz 2KHz 4KHz 8KHz db(a) @ 3.m VSR4 7 67 63 67 68 6 52 5 VSR34 74 72 66 66 68 68 62 56 52 VSR6 66 72 7 55 59 58 5 43 44 VSR36 77 77 72 66 64 6 54 47 47 VSR564 79 78 74 74 77 77 73 66 62 VSR5634 84 78 76 74 74 7 63 57 VSR566 73 66 65 67 66 6 54 VSR5636 77 77 67 66 67 66 6 54 5

Performance Curve 63-7 dia. - 4 & 6 & 8 Pole Phase 3 Phase 2 2 2 2 4 2 5 3 2 3 4 2 3 4 5 6 Performance Guide IP Motor F.L.C S.C. Volume m 3 /s @ Pa db(a) @ Supply Rating kw Amps Amps Poles rpm Curve 2 2 2 2 3.m VSR6334 4/3/ IP54 2.4 4.6 8.4 4 32 VSR636 23// IP54.6 2.8.2 6 9 2 VSR6336 4/3/ IP54.5 2.6.4 6 4 3 VSR76 23// IP54.95 4.4 7.6 6 8 4 VSR736 4/3/ IP54.94.7 6.8 6 9 5 Volume m 3 /s 5. 4.85 4.62 4.49 4.32 4.3 3.85 3.63 3.4 3. 2.74 2.48 62 Power Watts 235 23 24 24 2 4 87 26 2628 263 2639 2659 Volume m 3 /s 2.39 2.2.88.6.35 52 Power Watts 568 63 6 679 7 Volume m 3 /s 3.85 3.55 3.36 3. 2.85 2.42 2.2 57 Power Watts 538 5 593 6 645 66 666 Volume m 3 /s 3.5 2.93 2.69 2.32.97.63.99 52 Power Watts 67 666 7 76 88 8 9 Volume m 3 /s 3.33 3. 2.79 2.48 2.2.9.29 49 Power Watts 56 62 7 768 83 86 92 Sound Power Level Spectra db (ref 2 Watts) 63Hz Hz 2Hz Hz KHz 2KHz 4KHz 8KHz db(a) @ 3.m VSR6334 85 8 77 78 77 7 66 62 VSR636 74 7 73 68 68 66 6 54 52 VSR6336 84 7 7 74 7 65 59 57 VSR76 8 8 72 69 7 67 6 57 52 VSR736 69 69 68 67 68 65 59 52 49

Pressure Drop for Roof Cowl only Roof Attenuators 6 4 2 RESISTANCE (Pa) 8 6 4 2 2 2 3 4 5 6 7 8 9 9 MEAN DUCT VELOCITY m/s Stock Free area Resistance Cowl only Ref m 2 curve weight kg RCZ3.99 7.5 RCZ4.59 2 9 RCZ.246 2 3 RCZ63.396 3 9 RESISTANCE (Pa) 8 7 6 4 3 2 2 3 Vertical Backdraught Shutters Purlin Box Size Percentage reduction in performance at 4 pole speeds 35 7% 355 2% 4 % 4 *3% *4% 56 *6% 63 *3% 7 *7% * For 6 and 8 pole fans, reduce percentages by ratio of fan speeds. (Manufactured from.5mm pre-galv. mild steel) b a b c 2 3 4 5 6 7 8 9 Typical Installation Optional bird guard MEAN DUCT VELOCITY m/s Stock Kg Free Resistance Ref a b c d approx area m 2 curve RAZ36 455 535 5 6 8.56 RAZ46 555 635 65 6 22.245 2 RAZ6 635 79 745 6 3.46 2 RAZ66 77 935 89 6 44.66 3 RAZ39 455 535 5 9 2.56 RAZ49 555 635 65 9 28.245 2 RAZ9 635 79 745 9 39.46 2 RAZ69 77 935 89 9 52.66 3 RAZ32 455 535 5 2.56 RAZ42 555 635 65 2 35.245 2 RAZ2 635 79 745 2 48.46 2 RAZ62 77 935 89 2 6.66 32 * Recommended maximum duty velocity m/s Optional shutter offers protection against backdraughts Size a b c d e f g 2/35/355 6 9 24 765 4 59 46 4/4 7 9 24 865 75 565 89 7 2 99 6 864 64 Vacuum formed UV stabilised roof cowl assembly as standard. Optional colours available Base drilled on site MAX. Pitch 3 56 89 7 2 99 6 864 7 63 3 2 4 76 985 7 7 3 2 4 76 985 84 Structural trimmer Vent-Axia purlin box M Nut inserts in purlin box

Accessories Supply Electronic Controller 5 Step Auto Transformer D.O.L Starter Overload edemand** Voltage Control* edemand** 3ph Inverter VSR22 23// W332M 342 444744 444698 44464 - VSR24 23// W332M 342 444744 444697 44464 - VSR354 23// W332M 342 444744 444699 44464 - VSR3534 4/3/ - 343 444747 444699 44466 44472 VSR3554 23// W332M 342 444744 444699 44464 - VSR35534 4/3/ - 343 444747 444698 44466 44472 VSR44 23// W332M 342 444744 4447 44464 - VSR434 4/3/ - 343 444747 444698 44466 44472 VSR44 23// 333 343 444744 44472 44464 - VSR434* 4/3/ - 3432 444747 4447 44466 44472 VSR46 23// W332M 342 444744 444699 44464 - VSR436* 4/3/ - 343 444747 444699 44466 44472 VSR4 23// 336 345 444744 44472 44464 - VSR34* 4/3/ - 3432 444747 4447 44466 44472 VSR6 23// W332M 342 444744 4447 44464 - VSR36* 4/3/ - 3432 444747 4447 44466 44472 VSR564 23// 33A 349 444744 44473 44465 4447 VSR5634* 4/3/ - 3434 444747 44472 44466 44472 VSR566 23// 343 343 444744 44472 44464 - VSR5636* 4/3/ - 3432 444747 4447 44466 44472 VSR6334 4/3/ - 3437 444747 44473 44466 44473 VSR636 23// 336 345 444744 44472 44464 - VSR6336* 4/3/ - 3434 444747 44472 44466 44473 VSR76 23// 336 345 444744 44473 44464 - VSR736* 4/3/ - 3432 444747 4447 44466 44472 Roof Attenuator Model Ref 6mm 9mm 2mm Purlin Boxes Shutter Bird Guard VSR2 RAZ36 RAZ39 RAZ32 PBZ3 RSZ3 BGZ3 VSR35 RAZ36 RAZ39 RAZ32 PBZ3 RSZ3 BGZ3 VSR355 RAZ36 RAZ39 RAZ32 PBZ3 RSZ3 BGZ3 VSR4 RAZ46 RAZ49 RAZ42 PBZ4 RSZ4 BGZ4 VSR4 RAZ46 RAZ49 RAZ42 PBZ4 RSZ4 BGZ4 VSR RAZ6 RAZ9 RAZ2 PBZ RSZ BGZ VSR56 RAZ6 RAZ9 RAZ2 PBZ56 RSZ BGZ VSR63 RAZ66 RAZ69 RAZ62 PBZ63 RSZ63 BGZ63 VSR7 RAZ66 RAZ69 RAZ62 PBZ7 RSZ63 BGZ63 ** For full range of speed controller options, see Accessories & Controllers Section. *Three phase models are supplied with 2 speed delta/star connection motors, as standard. (Sizes 4 to 63 are 4/6 Pole, 7 are 6/8 pole). When low noise levels are required on all other models a 5 step auto transformer speed controller is recommended. Optional coloured Cowls and Bases available on request.