Sabre Sickle Fan Assisted Roof Cowls (VSR)

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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

1 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 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

2 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

3 Performance Curve dia. - 2 & 4 Pole Phase 3 Phase Performance Guide IP Motor F.L.C S.C. Volume m 3 Pa Supply Rating kw Amps Amps Poles rpm Curve 3.m VSR22 23// IP VSR24 23// IP VSR354 23// IP VSR3534 4/3/ IP VSR // IP VSR /3/ IP Volume m 3 /s Power Watts Volume m 3 /s.9.4 Power Watts Volume m 3 /s Power Watts Volume m 3 /s Power Watts Volume m 3 /s Power Watts Volume m 3 /s Power Watts Sound Power Level Spectra db (ref 2 Watts) 63Hz Hz 2Hz Hz KHz 2KHz 4KHz 8KHz 3.m VSR VSR VSR VSR VSR VSR

4 Performance Curve 4-4 dia. - 4 & 6 Pole Phase 3 Phase Performance Guide IP Motor F.L.C S.C. Volume m 3 Pa Supply Rating kw Amps Amps Poles rpm Curve 3.m VSR44 23// IP VSR434 4/3/ IP VSR44 23// IP VSR434 4/3/ IP VSR46 23// IP VSR436 4/3/ IP Volume m 3 /s Power Watts Volume m 3 /s Power Watts Volume m 3 /s Power Watts Volume m 3 /s Power Watts Volume m 3 /s Power Watts 65 8 Volume m 3 /s Power Watts Sound Power Level Spectra db (ref 2 Watts) 63Hz Hz 2Hz Hz KHz 2KHz 4KHz 8KHz 3.m VSR VSR VSR VSR VSR VSR

5 Performance Curve dia. - 4 & 6 Pole Phase 3 Phase Performance Guide IP Motor F.L.C S.C. Volume m 3 Pa Supply Rating kw Amps Amps Poles rpm Curve m VSR4 23// IP VSR34 4/3/ IP VSR6 23// IP VSR36 4/3/ IP VSR564 23// IP VSR5634 4/3/ IP VSR566 23// IP VSR5636 4/3/ IP Volume m 3 /s Power Watts Volume m 3 /s Power Watts Volume m 3 /s Power Watts Volume m 3 /s Power Watts Volume m 3 /s Power Watts Volume m 3 /s Power Watts Volume m 3 /s Power Watts Volume m 3 /s Power Watts Sound Power Level Spectra db (ref 2 Watts) 63Hz Hz 2Hz Hz KHz 2KHz 4KHz 8KHz 3.m VSR VSR VSR VSR VSR VSR VSR VSR

6 Performance Curve 63-7 dia. - 4 & 6 & 8 Pole Phase 3 Phase Performance Guide IP Motor F.L.C S.C. Volume m 3 Pa Supply Rating kw Amps Amps Poles rpm Curve m VSR6334 4/3/ IP VSR636 23// IP VSR6336 4/3/ IP VSR76 23// IP VSR736 4/3/ IP Volume m 3 /s Power Watts Volume m 3 /s Power Watts Volume m 3 /s Power Watts Volume m 3 /s Power Watts Volume m 3 /s Power Watts Sound Power Level Spectra db (ref 2 Watts) 63Hz Hz 2Hz Hz KHz 2KHz 4KHz 8KHz 3.m VSR VSR VSR VSR VSR

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

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

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

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.

7 Pressure Drop for Roof Cowl only Roof Attenuators RESISTANCE (Pa) MEAN DUCT VELOCITY m/s Stock Free area Resistance Cowl only Ref m 2 curve weight kg RCZ RCZ RCZ RCZ RESISTANCE (Pa) 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 Typical Installation Optional bird guard MEAN DUCT VELOCITY m/s Stock Kg Free Resistance Ref a b c d approx area m 2 curve RAZ RAZ RAZ RAZ RAZ RAZ RAZ RAZ RAZ RAZ RAZ RAZ * Recommended maximum duty velocity m/s Optional shutter offers protection against backdraughts Size a b c d e f g 2/35/ / Vacuum formed UV stabilised roof cowl assembly as standard. Optional colours available Base drilled on site MAX. Pitch Structural trimmer Vent-Axia purlin box M Nut inserts in purlin box

8 Accessories Supply Electronic Controller 5 Step Auto Transformer D.O.L Starter Overload edemand** Voltage Control* edemand** 3ph Inverter VSR22 23// W332M VSR24 23// W332M VSR354 23// W332M VSR3534 4/3/ VSR // W332M VSR /3/ VSR44 23// W332M VSR434 4/3/ VSR44 23// VSR434* 4/3/ VSR46 23// W332M VSR436* 4/3/ VSR4 23// VSR34* 4/3/ VSR6 23// W332M VSR36* 4/3/ VSR564 23// 33A VSR5634* 4/3/ VSR566 23// VSR5636* 4/3/ VSR6334 4/3/ VSR636 23// VSR6336* 4/3/ VSR76 23// VSR736* 4/3/ 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.

Vent-Axia Sabre Sickle Roof Fans (VSR)

Vent-Axia Sabre Sickle Roof Fans (VSR) Features and Benefits High performance roof sickle fan Fully assembled cowl. Optional backdraught shutters and birdguard Moulded from recyclable polymeric material,