Twinflow STDR
Twinflow STDR

Twinflow STDR

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Twinflow STDR

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The Twinflow STDR is a range of direct and belt driven centrifugal fans for external roof mounting, manufactured in aluminium alloy with a mill finish and a louvred air discharge. Ideal for external mounting on roof tops where ceiling voids and roof spaces are inadequate or the unit is too large to fit internally, they are available with or without acoustic lining dependant on whether lower breakout noise levels are required.

Features & Benefits

FEATURES & BENEFITS

Learn more about individual features and benefits of our products.

 Specification

SPECIFICATION

The Twinflow STDR 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
Accessories

ACCESSORIES

Elta supply a full range of accessories for each of their products.

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COMPARE

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DOWNLOADS

Get the full brochure, wiring diagrams and operation and maintenance instructions.
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Features & Benefits

Material Strength

This robust and durable unit has a casing manufactured from mill finish aluminium alloy, with a louvred air discharge which provides protection against ingress from the elements and is self draining.

Ease of installation

All models are designed for direct connection to standard ductwork with 50 mm long rectangular spigots for ease of connection.

Low noise

Twin fans have the option of being acoustically lined with Class O acoustic foam so that breakout noise levels are significantly lowered.

Alternative

An alternative position of the intake spigot can be fitted on the end of the unit for when the ventilation riser is not directly over the unit, this allows the unit to be fixed adjacent to ducting.

Quality impellers

Either direct or belt driven double inlet, double width forward curved centrifugal impellers, housed in a purpose designed scroll with integral deep drawn inlet rings to maximize efficiency and a smooth airflow.

Design Appeal

Anti-vibration mounts are fitted between the motor mounting arms and the fan casing which ensures smooth running.

Warranty

Each STDR has a 12 month warranty

SPP Specifications

Specification

The Twinflow STDR range of direct drive twin fans 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 unit casing shall be manufactured from 1.6mm thick mill finish aluminium alloy. The casing shall be designed so as to minimise vibration and shall incorporate a louvered air discharge guarded against bird ingress. Drain points shall also be provided.

Non return shutters shall be fitted on the fan outlets to prevent recirculation of air between the fans and back draughts when the unit is not in operation.

The unit shall be fitted with airflow detection switches pre wired to the unit's terminal block for connection to a suitable control panel to facilitate auto change over.

Units can be supplied with or without acoustic lining. Where acoustically lined units are required the lining shall be open cell foam conforming to Class O of the U.K. Building Regulations.

Access panels shall be provided for ease of servicing.

Motors

Direct Drive units shall have highly efficient, maintenance free motors, matched to the aerodynamic performance of the impeller.

These shall be protected to IP20/ IP44 and suitable for working temperatures of up to +40℃.

Electrical connection shall be provided by an IP55 isolator fitted onto the unit casing.

Impeller

Impellers shall be double inlet double width forward curved centrifugal type housed in a purpose designed scroll with integral deep drawn inlet rings to facilitate maximum efficiency.

Quality Management

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

All STDR 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

 stdr dims

Product CodeABCDEFWeight kg
STDR1/L* 500 500 275 175 100 150 16
STDR2/L* 700 740 350 225 150 150 27
STDR3/L* 700 800 400 250 150 150 39
STDR4/L* 800 950 450 350 200 150 53
STDR5/L* 950 950 550 400 325 150 67
STDR6/L* 1050 1050 550 450 350 150 78
STDR7/L* 1150 1150 650 650 400 200 110

 

Performance & Electrical Data

Direct Drive - SINGLE Phase - 220V-240V / 50Hz

Product Code Speed r/minAirflow m3/s @ Static Pressure Pa.          Motor Electrical Data  Sound Level dBA@3mBreakout dBA@3m

0

25

50

75

100

150

200

250

300

350

400

FLC Amps

SC Amps

Input Kw

STDR/STDR/L

STDR/STDR/L
STDR1/L 2250 0.056 0.053 0.05 0.047 0.043 0.036 0.028 0.019 0.37 1.41 0.085 29/28 27/26
STDR2/L 1330 0.179 0.158 0.133 0.107 0.07 0.43 1.38 0.098 36/35 32/31
STDR3/L 1220 0.28 0.257 0.232 0.209 0.184 0.133 0.082 0.028 1.2 4.8 0.25 45/44 38/36
STDR4/L 1415 0.465 0.436 0.404 0.372 0.34 0.272 0.19 0.104 0.03 2.7 9.6 0.5 49/47 46/44
STDR5/L 1250 0.8 0.778 0.76 0.734 0.716 0.66 0.604 0.534 0.43 0.279 0.1 4.4 12.6 0.96 50/48 46/42
STDR6/L 1310 0.96 0.945 0.915 0.898 0.875 0.825 0.77 0.682 0.565 0.302 0.15 5.2 18.9 1.1 54/52 48/46
STDR7/L 820 1.41 1.37 1.32 1.28 1.22 1.1 0.965 0.785 0.43 0.15 7 20.7 1.4 52/50 45/4

Silencer Data

 Product CodeSilencer Attenuation & Pressure Drop Data     

600L 

900L 

1200L 

600L

900L

1250L

600L

900L

1250L
STDR1/L -6 -9 -11 10 11 12
STDR2/L -6 -9 -10 18 20 22
STDR3/L -6 -9 -10 26 28 30
STDR4/L -5 -6 -8 12 13 14
STDR5/L -7 -9 -11 21 23 25
STDR6/L -7 -9 -11 20 22 24
STDR7/L -8 -10 -13 16 17 18

Wiring Data

SINGLE Phase - 220V-240V / 50Hz

Product CodeWiring Diagram No.
STDR 1/L* 152-514
STDR 2/L* 152-514
STDR 3/L* 152-514
STDR 4/L* 152-514
STDR 5/L* 152-514
STDR 6/L* 152-514
STDR 7/L* 152-514

Accessories

  • Auto Changeover Panels

    Auto Changeover Panels

    Read more
 

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