Skyflow SSF
Skyflow SSF

Skyflow SSF

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Skyflow SSF

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The Skyflow SSF is a lightweight range of horizontal discharge roof extract units which balance the need to satisfy architects’ modern day building needs against a low silhouette design. The Skyflow is UV stabilised for a durable, long lasting product, which delivers exceptional performance and noise characteristics.

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FEATURES & BENEFITS

Learn more about individual features and benefits of our products.

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SPECIFICATION

The Skyflow SSF range of roof mounted fans as manufactured by Elta Fans Ltd.

 Technical information

TECHNICAL INFORMATION

The technical information available to you from ELTA Fans is exhaustive - Choose from either sound, performance and electrical or dimensional data for each and every product
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ACCESSORIES

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SPP Features and Benefits
 

Features & Benefits

Quality assurance

All units are designed and manufactured with procedures as defined in BS EN ISO 9001: 2008.

Tested to the very latest standards

SSF units are tested to ISO 5801:1997 (airside performance) and to BS 848 Pt 2:1985 (sound performance) at Elta Fans own test facility, meaning accurate, up to date information on performance and noise data that can be relied upon.

Mounting

SSF units are designed to be suitable for either curb or purlin mounting and can be mounted on flat or inclined roofs with a maximum pitch angle of 35°.

Design appeal

Roof units are supplied as standard in goose wing grey, with the option of any other RAL colour to comply with the overall design, profile and colour scheme for a building.

Time Saving

Drop in silencers can be supplied which reduces installation time by fitting the silencers into the roof space rather than the ductwork – Less labour, less time and cost.

Ease of wiring

The electrical connection to the motor is made by an IP55 terminal box fitted to a 550mm flying lead from the units inlet side.

Reliability

Motors have sealed for life bearings.

SPP Specifications

Specification

The Skyflow SSF range of roof extract units as manufactured by Elta Fans Ltd. 46 Third Avenue, Pensnett Trading Estate, Kingswinford, West Midlands DY6 7US, UK, Tel: +44 (0) 1384 275800 - If you need more information - Contact us.

Casing

The top cowl and fan support housing shall be manufactured from UV stabilised GRP finished in goose wing grey (BS 00-A-05).

The all metal fan casing and guard provides a long lasting and robust construction.

The fans have been constructed from mild steel and suitably treated to ensure full corrosion protection, the guard shall be bright zinc plated.

Fan plates and motors shall have a powder coated polyester epoxy paint finish in pastel beige (RAL 7032).

Motors

Motors are highly efficient, lightweight induction motors with sealed for life, maintenance free ball bearings, which allows the fan to be installed at any angle.

Each motor is matched to the aerodynamic performance of the impeller. Motors are Class F insulated to EN 60034-5, weatherproofed to IP55 and all suitable for speed control. Each motor has integral thermal overload protection.

Fans are suitable for operating temperatures between -20℃ and +70℃ fixed speed and -20℃ and +50℃ when used with a speed controller.

Electrical connection to the motor shall be provided by an IP55 terminal box fitted to a 550mm long flying lead.

Impellers

Adjustable pitch aerofoil impellers are provided with blades made from high quality GRP

Impellers are factory set at an angle to provide maximum performance.

The hubs are manufactured from die cast aluminium alloy (LM24). Assembled impellers are to be dynamically balanced to Grade G6.3.

Quality Management

Units are to be designed and manufactured with procedures as defined in BS EN ISO 9001: 2008.

All SSF units are to be tested to ISO 5801:1997 (airside performance) and BS 848 Part 2: 1985 (sound performance).

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Technical Information

Dimensional Data

ssf dims

Product CodeCowl OnlyABCDEFGHJKLMNPRWeight kg
SSF25 SSR25 500 500 310 80 428 240 428 175 542 380 340 440 50 - - 12
SSF31/35 SSR31/35 710 684 365 85 610 240 636 250 750 500 460 610 75 - - 19
SSF40/45 SSR40/45 800 784 445 90 730 250 756 300 870 600 550 700 75 - - 37
SSF50/56 SSR50/56 960 934 510 100 860 250 886 350 1000 745 700 850 75 - - 53
SSF63/71 SSR63/71 1230 1054 590 105 1000 250 1026 435 1140 870 830 980 75 - - 62
SSF80 SSR80 1400 1174 670 100 1076 270 1076 470 1190 - 950 1100 75 406 990 64

 

Performance & Electrical Data

SINGLE Phase - 220V-240V / 50Hz

Product CodeSpeed r/minAirflowAirflow m³/s @ Static Pressure Pa.Motor Electrical Data
0 10 20 30 40 50 60 80 100 120 140 160 FLC Amps SC Amps Output kW
SSF25/4-1 1455 m³/s 0.26 0.24 0.23 0.21 0.19 0.18 0.15 0.12 0.90 1.45 0.09
SSF31/4-1 1390 m³/s 0.50 0.48 0.46 0.43 0.41 0.38 0.35 0.28 0.19 0.90 1.45 0.09
SSF35/4-1 1330 m³/s 0.65 0.62 0.60 0.57 0.54 0.50 0.47 0.39 0.30 0.21 0.90 1.45 0.09
SSF40/4-1 1375 m³/s 1.09 1.06 1.02 0.99 0.96 0.92 0.89 0.80 0.67 0.48 0.37 1.80 3.60 0.25
SSF45/4-1 1300 m³/s 1.32 1.28 1.24 1.20 1.16 1.11 1.06 0.95 0.82 0.63 0.50 1.80 3.60 0.25
SSF45/6-1 850 m³/s 0.86 0.80 0.72 0.64 0.55 0.44 0.32 0.17 1.05 2.00 0.12
SSF50/4-1 1350 m³/s 1.88 1.83 1.79 1.74 1.70 1.65 1.61 1.51 1.42 1.31 1.20 3.60 10.8 0.55
SSF50/6-1 860 m³/s 1.22 1.15 1.09 1.03 0.96 0.88 0.77 0.46 0.33 0.25 1.55 3.50 0.18
SSF56/4-1 1350 m³/s 2.45 2.39 2.33 2.28 2.22 2.17 2.11 1.99 1.84 1.56 1.18 4.90 15.0 0.75
SSF56/6-1 875 m³/s 1.69 1.64 1.58 1.53 1.47 1.40 1.30 0.93 0.76 0.65 2.20 5.50 0.25
SSF63/4-1 1310 m³/s 3.50 3.43 3.36 3.29 3.21 3.12 3.03 2.84 2.62 2.36 2.04 1.64 7.90 19.8 1.10
SSF63/6-1 850 m³/s 2.40 2.35 2.29 2.22 2.16 2.09 2.02 1.84 1.53 1.17 1.01 6.00 12.6 0.55

Silencer Data

 Product CodeSilencer Attenuation & Pressure Drop Data     

600L 

900L 

1200L 

dBA

P Pa

dBA

P Pa

dBA

P Pa
SSF25/4-1 -14 6 -17 7 -20 9
SSF31/4-1 -12 9 -15 11 -18 13
SSF35/4-1 -13 8 -17 11 -20 13
SSF40/4-1 -12 16 -17 20 -20 24
SSF45/6-1 -12 4 -17 5 -20 6
SSF45/4-1 -13 15 -18 18 -21 22
SSF50/6-1 -8 5 -13 6 -14 8
SSF50/4-1 -9 23 -14 29 -15 34
SSF56/6-1 -10 10 -16 12 -17 15
SSF56/4-1 -11 25 -16 31 -19 38
SSF63/6-1 -9 14 -14 17 -16 21
SSF63/4-1 -10 30 -16 38 -18 45

 

Performance & Electrical Data

THREE Phase - 380V-415V / 50Hz

Product CodeSpeed r/minAirflowAirflow m³/s @ Static Pressure Pa.Motor Electrical Data
0 10 20 30 40 50 60 80 100 120 140 160 200 FLC Amps SC Amps Output kW
SSF31/4-3 1390 m³/s 0.50 0.48 0.46 0.43 0.41 0.38 0.35 0.28 0.19 0.50 1.15 0.12
SSF35/4-3 1330 m³/s 0.65 0.62 0.60 0.57 0.54 0.5 0.47 0.39 0.3 0.21 0.50 1.15 0.12
SSF40/4-3 1375 m³/s 1.09 1.06 1.02 0.99 0.96 0.92 0.89 0.8 0.67 0.48 0.37 1.40 4.50 0.37
SSF45/4-3 1300 m³/s 1.30 1.26 1.22 1.18 1.14 1.09 1.05 0.95 0.82 0.65 0.51 1.40 4.50 0.37
SSF45/6-3 850 m³/s 0.86 0.79 0.73 0.66 0.58 0.50 0.39 0.14 0.68 1.70 0.18
SSF50/4-3 1320 m³/s 1.52 1.78 1.74 1.70 1.65 1.61 1.56 1.47 1.37 1.26 1.12 0.9 1.75 6.20 0.55
SSF50/6-3 830 m³/s 1.18 1.11 1.05 0.99 0.92 0.84 0.74 0.49 0.35 0.94 2.40 0.25
SSF56/4-3 1320 m³/s 2.39 2.34 2.29 2.23 2.18 2.12 2.06 1.93 1.77 1.43 1.19 2.00 7.50 0.75
SSF56/6-3 830 m³/s 1.64 1.58 1.53 1.47 1.41 1.34 1.23 0.92 0.76 0.65 0.94 2.40 0.25
SSF63/4-3 1320 m³/s 3.80 3.75 3.71 3.76 3.63 3.59 3.54 3.45 3.36 3.27 3.18 3.08 2.86 4.30 15.5 1.5
SSF63/6-3 850 m³/s 2.36 2.29 2.22 2.16 2.10 2.04 1.97 1.78 1.47 1.17 1.90 5.80 0.55
SSF71/4S-3 1380 m³/s 4.77 4.66 4.55 4.44 4.32 4.19 4.06 3.78 3.45 3.06 2.61 2.18 4.30 15.5 1.5
SSF71/6S-3 720 m³/s 3.10 2.97 2.83 2.68 2.53 2.38 2.22 1.50 5.40 0.50
SSF71/6D-3 880 m³/s 3.50 3.41 3.32 3.21 3.10 2.97 2.83 2.52 3.40 12.3 1.1
SSF80/6S-3 620 m³/s 3.85 3.69 3.51 3.33 3.14 2.95 2.75 1.50 5.40 0.50
SSF80/6D-3 820 m³/s 4.72 4.61 4.49 4.36 4.21 4.06 3.90 3.59 3.40 12.3 1.1

Silencer Data

 Product CodeSilencer Attenuation & Pressure Drop Data     

600L 

900L 

1200L 

dBA

P Pa

dBA

P Pa

dBA

P Pa
SSF31/4-3 -12 9 -15 11 -18 13
SSF35/4-3 -13 8 -17 11 -20 13
SSF40/4-3 -12 16 -17 20 -20 24
SSF45/6-3 -12 5 -17 6 -20 7
SSF45/4-3 -13 14 -18 18 -21 21
SSF50/6-3 -8 6 -13 8 -14 10
SSF50/4-3 -9 20 -14 25 -15 30
SSF56/6-3 -10 9 -16 11 -17 14
SSF56/4-3 -11 24 -16 30 -19 36
SSF63/6-3 -9 13 -14 17 16 20
SSF63/4-3 -10 42 -16 53 -18 63

 

Sound Data

SSF - SINGLE Phase

Product Code63Hz125Hz250Hz500Hz1kHz2kHz4kHz8kHzdBA@3m
SSF25/4-1 68 67 65 60 58 54 53 40 43
SSF31/4-1 69 69 64 65 62 58 53 50 46
SSF35/4-1 72 74 69 71 69 66 61 58 53
SSF40/4-1 73 75 70 72 69 68 66 60 54
SSF45/4-1 75 77 75 75 74 71 68 60 58
SSF50/4-1 79 84 84 77 74 72 68 64 60
SSF56/4-1 80 84 82 80 79 75 73 67 63
SSF63/4-1 81 83 87 86 81 79 77 72 67
SSF25/4-1B 68 67 65 60 58 54 53 40 43
SSF31/4-1B 69 69 64 65 62 58 53 50 46
SSF35/4-1B 72 74 69 71 69 66 61 58 53
SSF40/4-1B 73 75 70 72 69 68 66 60 54
SSF45/4-1B 75 77 75 75 74 71 68 60 58
SSF50/4-1B 79 84 84 77 74 72 68 64 60
SSF56/4-1B 80 84 82 80 79 75 73 67 63
SSF63/4-1B 81 83 87 86 81 79 77 72 67
SSF25/4-1S 68 67 65 60 58 54 53 40 43
SSF31/4-1S 69 69 64 65 62 58 53 50 46
SSF35/4-1S 72 74 69 71 69 66 61 58 53
SSF40/4-1S 73 75 70 72 69 68 66 60 54
SSF45/4-1S 75 77 75 75 74 71 68 60 58
SSF50/4-1S 79 84 84 77 74 72 68 64 60
SSF56/4-1S 80 84 82 80 79 75 73 67 63
SSF63/4-1S 81 83 87 86 81 79 77 72 67
SSF25/4-1BS 68 67 65 60 58 54 53 40 43
SSF31/4-1BS 69 69 64 65 62 58 53 50 46
SSF35/4-1BS 72 74 69 71 69 66 61 58 53
SSF40/4-1BS 73 75 70 72 69 68 66 60 54
SSF45/4-1BS 75 77 75 75 74 71 68 60 58
SSF50/4-1BS 79 84 84 77 74 72 68 64 60
SSF56/4-1BS 80 84 82 80 79 75 73 67 63
SSF63/4-1BS 81 83 87 86 81 79 77 72 67
SSF45/6-1 69 68 70 68 66 62 58 49 50
SSF50/6-1 70 76 78 67 65 64 58 53 52
SSF56/6-1 76 78 77 74 72 69 60 56 56
SSF63/6-1 76 80 82 77 74 72 67 63 59
SSF45/6-1B 69 68 70 68 66 62 58 49 50
SSF50/6-1B 70 76 78 67 65 64 58 53 52
SSF56/6-1B 76 78 77 74 72 69 60 56 56
SSF63/6-1B 76 80 82 77 74 72 67 63 59
SSF45/6-1S 69 68 70 68 66 62 58 49 50
SSF50/6-1S 70 76 78 67 65 64 58 53 52
SSF56/6-1S 76 78 77 74 72 69 60 56 56
SSF63/6-1S 76 80 82 77 74 72 67 63 59
SSF45/6-1BS 69 68 70 68 66 62 58 49 50
SSF50/6-1BS 70 76 78 67 65 64 58 53 52
SSF56/6-1BS 76 78 77 74 72 69 60 56 56
SSF63/6-1BS 76 80 82 77 74 72 67 63 59 

 

SSF - THREE Phase

Product Code63Hz125Hz250Hz500Hz1kHz2kHz4kHz8kHzdBA@3m
SSF31/4-3 69 69 64 65 62 58 53 50 46
SSF35/4-3 72 74 69 71 69 66 61 58 53
SSF40/4-3 73 75 70 72 69 68 66 60 54
SSF45/4-3 75 77 75 75 74 71 68 60 58
SSF50/4-3 79 84 84 77 74 72 68 64 60
SSF56/4-3 80 84 82 80 79 75 73 67 63
SSF63/4-3 83 85 89 88 83 81 79 74 69
SSF71/4S-3 81 88 85 85 86 83 79 75 69
SSF31/4-3B 69 69 64 65 62 58 53 50 46
SSF35/4-3B 72 74 69 71 69 66 61 61 58
SSF40/4-3B 73 75 70 72 69 68 66 60 54
SSF45/4-3B 75 77 75 75 74 71 68 60 58
SSF50/4-3B 79 84 84 77 74 72 68 64 60
SSF56/4-3B 80 84 82 80 79 75 73 67 63
SSF63/4-3B 83 85 89 88 83 81 79 74 69
SSF71/4S-3B 81 88 85 85 86 83 79 75 69
SSF31/4-3S 69 69 64 65 62 58 53 50 46
SSF35/4-3S 72 74 69 71 69 66 61 58 53
SSF40/4-3S 73 75 70 72 69 68 66 60 54
SSF45/4-3S 75 77 75 75 74 71 68 60 58
SSF50/4-3S 79 84 84 77 74 72 68 64 60
SSF56/4-3S 80 84 82 80 79 75 73 67 63
SSF63/4-3S 83 85 89 88 83 81 79 74 69
SSF71/4S-3S 81 88 85 85 86 83 79 75 69
SSF31/4-3BS 69 69 64 65 62 58 53 50 46
SSF35/4-3BS 72 74 69 71 69 66 61 58 53
SSF40/4-3BS 73 75 70 72 69 68 66 60 54
SSF45/4-3BS 75 77 75 75 74 71 68 60 58
SSF50/4-3BS 79 84 84 77 74 72 68 64 60
SSF56/4-3BS 80 84 82 80 79 75 73 67 63
SSF63/4-3BS 83 85 89 88 83 81 79 74 69
SSF71/4S-3BS 81 88 85 85 86 83 79 75 69
SSF45/6-3 69 68 70 68 66 62 58 49 50
SSF50/6-3 70 76 78 67 65 64 58 53 52
SSF56/6-3 76 78 77 74 72 69 60 56 56
SSF63/6-3 76 80 82 77 74 72 67 63 59
SSF71/6D-3 77 81 80 76 77 74 70 66 61
SSF80/6D-3 83 86 85 83 84 81 77 70 67
SSF45/6-3B 69 68 70 68 66 62 58 49 50
SSF50/6-3B 70 76 78 67 65 64 58 53 52
SSF56/6-3B 76 78 77 74 72 69 60 56 56
SSF63/6-3B 76 80 82 77 74 72 67 63 59
SSF71/6D-3B 77 81 80 76 77 74 70 66 61
SSF80/6D-3B 83 86 85 83 84 81 77 70 67

 

SSF - THREE Phase

Product Code63Hz125Hz250Hz500Hz1kHz2kHz4kHz8kHzdBA@3m
SSF45/6-3S 69 68 70 68 66 62 58 49 50
SSF50/6-3S 70 76 78 67 65 64 58 53 52
SSF56/6-3S 76 78 77 74 72 69 60 56 56
SSF63/6-3S 76 80 82 77 74 72 67 63 59
SSF71/6D-3S 77 81 80 76 77 74 70 66 61
SSF80/6D-3S 83 86 85 83 84 81 77 70 67
SSF45/6-3BS 69 68 70 68 66 62 58 49 50
SSF50/6-3BS 70 76 78 67 65 64 58 53 52
SSF56/6-3BS 76 78 77 74 72 69 60 56 56
SSF63/6-3BS 76 80 82 77 74 72 67 63 59
SSF71/6D-3BS 77 81 80 76 77 74 70 66 61
SSF80/6D-3BS 83 86 85 83 84 81 77 70 67
SSF71/6S-3 74 77 75 71 72 69 64 59 56
SSF80/6S-3 73 75 72 68 69 66 60 55 53
SSF71/6S-3B 74 77 75 71 72 69 64 59 56
SSF80/6S-3B 73 75 72 68 69 66 60 55 53
SSF71/6S-3S 74 77 75 71 72 69 64 59 56
SSF80/6S-3S 73 75 72 68 69 66 60 55 53
SSF71/6S-3BS 74 77 75 71 72 69 64 59 56
SSF80/6S-3BS 73 75 72 68 69 66 60 55 53

Wiring Data

SINGLE Phase - 220V-240V / 50Hz

Product CodeWiring Diagram No.
SSF25/4-1 152-500
SSF31/4-1 152-500
SSF35/4-1 152-500
SSF40/4-1 152-500
SSF45/4-1 152-500
SSF45/6-1 152-500
SSF50/4-1 152-500
SSF50/6-1 152-500
SSF56/4-1 152-500
SSF56/6-1 152-500
SSF63/4-1 152-500
SSF63/6-1 152-500

THREE Phase - 380V-415V / 50Hz

Product CodeWiring Diagram No.
SSF31/4-3 152-608
SSF35/4-13 152-608
SSF40/4-3 152-608
SSF45/4-3 152-608
SSF45/6-3 152-608
SSF50/4-3 152-608
SSF50/6-3 152-608
SSF56/4-3 152-608
SSF56/6-3 152-608
SSF63/4-3 152-608
SSF63/6-3 152-608
SSF71/4S-3 152-608
SSF71/6S-3 152-608
SSF71/6D-3 152-608
SSF80/6S-3 152-608
SSF80/6D-3 152-608

Accessories

  • Inverter: IP20

    This rating means this unit has a protection level of two against solid-body ingress, and a protection level of zero against the ingress of water.

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  • Inverter: IP55

    This rating means this unit has a protection level of five against solid-body ingress, and a protection level of five against the ingress of water.

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  • Purlin Boxes (039B)

    Pre-galvanised mild steel

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  • Drop In Silencers (068)

    Galvanised steel casing with perforated steel lining and baffles

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  • Soaker Sheets (039S)

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  • Backdraft Shutter (039)

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