Which configurations are rated 300°C/2h vs. 400°C/2h?

The fire resistance rating is determined by the selected motor, thermal insulation, and tested assembly: '-300/2' designates certification for 2 hours at 300°C, while '-400/2' designates certification for 2 hours at 400°C under EN 12101-3 standards. Ratings are configuration-specific and verified by third-party fire-test certificates.

Is the published motor 380V or 400V at 60Hz?

The VENTS 60 Hz catalogue technical data publishes 3~400V 60Hz. Motor windings for Saudi Arabian projects are dual-nameplate rated for 3~380–400V / 60Hz. During project submittal, the technical sales team provides the exact motor manufacturer data sheet matching the consultant's electrical schedule.

Can one VDO fan serve both normal ventilation and emergency smoke exhaust?

Yes. When equipped with a two-speed motor (e.g. 4/8-pole Dahlander or dual separate windings), the fan operates at low speed for daily car park or commercial exhaust at normal ambient temperatures (-60°C to +50°C). Upon receiving a fire alarm signal from the BMS or fire alarm panel, the control system switches the fan to maximum speed for emergency smoke extraction.

Which starter, VFD, or control method is approved for fire mode?

During normal daily ventilation, variable frequency drives (VFDs) or soft starters can be used. However, during emergency fire mode, building codes require that the VFD be bypassed via a dedicated fire-mode bypass contactor, and motor internal thermal overload protections must be disabled to ensure the fan runs to destruction if necessary to save human life.

Are the dampers, flexible connectors, and silencers fire rated?

Accessories must be selected specifically for fire mode. Standard canvas or PVC flexible connectors will fail during a fire. For smoke systems, specify the VVGF-VO...400/2 fire-rated flexible joint (certified for 400°C/2h) and the KOM-VO...400/2 fire-rated smoke backdraft damper. Standard VVGF-VO and KOM-VO accessories are suitable only for non-fire ventilation.

What certificates and consultant submittal documents are supplied?

Each project quotation includes the official VDO 60 Hz catalogue curve, customized technical submittal, factory dimensional drawings, motor electrical data, and third-party laboratory fire-test certification (300°C/2h or 400°C/2h) for Civil Defense and MEP consultant approval.

Is VDO for smoke extraction or stairwell/lobby pressurisation?

VDO is exclusively designed for smoke extraction and hot-air removal (negative pressure exhaust). Stairwell and elevator lobby emergency pressurisation systems require positive-pressure supply air; for those systems, specify the companion VENTS VPVO series covered in pages 6–19 of the catalogue.

How is the operating CFM and static pressure selected?

Selection requires plotting the required operating airflow against the calculated total system external static pressure on the manufacturer's certified 60 Hz aerodynamic fan curve. Do not select from maximum free-air CFM, as duct friction, silencers, and smoke dampers create system resistance that determines actual delivered airflow and required motor shaft power.

VENTS VDO Series • 400 to 1250 mm (300°C/2h & 400°C/2h, 60 Hz)

VDO Axial Smoke Extraction Fan

Certified high-temperature axial smoke extraction fans for emergency fire smoke evacuation (300°C/2h and 400°C/2h EN 12101-3) and dual-duty ventilation across car parks, commercial buildings, and industrial plants in Saudi Arabia.

Request Quote on WhatsApp Call Smoke Ventilation Engineer Download VDO 60Hz Catalogue (PDF, 10.6 MB)

Life-Safety NoticeEmergency smoke extraction vs. stair pressurisation

The VENTS VDO is a certified high-temperature axial smoke extraction fan engineered specifically to extract hot smoke and toxic combustion gases (tested for 2 hours at 300°C or 400°C) from enclosed car parks, high-rise buildings, atriums, and industrial facilities. For stairwell or lobby pressurisation, a separate positive-pressure supply fan (such as the VPVO series) must be selected. Smoke fan selection requires operating airflow at system design static pressure, not free-air CFM alone. Need general clean-air ventilation? Explore VMD-A Axial Fans.

VENTS VDO cylindrical axial smoke extraction fan with heavy-gauge steel casing and cast aluminium impeller

VENTS VDO Axial Smoke Extraction Fan

Certified 300°C/2h & 400°C/2h fire endurance

Documented 60 Hz aerodynamic curves (400–1250 mm)

Full VDO order codes & consultant submittal support

VENTS VDO Axial Smoke Extraction Fan

Fan Category

High-Temperature Axial Smoke Extraction Fan

Product Series

VENTS VDO Series

Fire Resistance Class

300°C / 2 Hours (-300/2) & 400°C / 2 Hours (-400/2)

Casing Diameter Range

400 to 1,250 mm (16 to 50 inch)

Airflow Capacity Range

Up to 125,000 m³/h (73,570 CFM catalogue range)

Electrical Supply

3~400V 60Hz (3~380–400V 60Hz project nameplates)

Life-Safety Selection & Civil Defense Compliance Mandate

CRITICAL LIFE-SAFETY SELECTION DIRECTIVE: Smoke-control fans are emergency life-safety equipment governed by strict building and fire codes (including Saudi Civil Defense requirements). Simplified free-air CFM estimates cannot be used for procurement. Every fan must be custom-selected from manufacturer-certified 60 Hz performance curves matching the required operating airflow at total system static pressure (accounting for duct resistance, smoke density reduction at 300°C/400°C, and fire dampers). System approval requires project consultant review and third-party fire-test certificates.

Application Check

Is the VDO smoke fan suitable for your fire safety project?

Review approved high-temperature smoke-extraction duties, dual-duty normal exhaust options, and required positive-pressure supply exclusions.

Approved High-Temperature Smoke Duty

Approved Smoke Extraction

Enclosed commercial and residential car park smoke clearance and heat exhaust
High-rise commercial building smoke-spill shafts and refuge floor exhaust
Industrial plant, turbine hall, and manufacturing emergency smoke evacuation
Large public atriums, shopping mall smoke reservoirs, and logistics warehouse fire extraction

Dual-Duty Normal Exhaust + Fire Mode

Dual-Mode Operation

Two-speed motors (e.g. 4/8-pole or 4/6-pole) providing daily energy-efficient general ventilation
Continuous operation in ambient temperatures from -60°C to +50°C (climatic category U1/T1)
Immediate high-speed switchover to emergency 2-hour smoke extraction upon fire alarm signal
Dedicated fire-mode control panels with VFD bypass and thermal overload bypass

Pressurisation & Severe Airstream Exclusions

Separate Series Required

Positive-pressure stairwell or elevator lobby pressurisation (requires dedicated VPVO supply series)
Flammable vapors, fuel storage tanks, or ATEX/IECEx hazardous explosive atmospheres
Commercial kitchen grease hood exhaust (requires dedicated Upblast Roof Fans with grease drain)
Highly corrosive chemical acid exhaust (standard casing is powder-coated heavy steel)

Verified Configurations

VDO Series Documented Selection Schedule (60 Hz)

Representative documented configurations from the VENTS 60 Hz smoke ventilation catalogue. Each row specifies the exact complete order code, motor power, pole count, blade configuration, fire class, operating flow range at design pressure, and curve reference.

Swipe horizontally to inspect full order codes, operating ranges, and curve references.

Full VDO Order Code	Diameter	Poles / RPM	Motor Power	Blade Setup	Voltage (60Hz)	Fire Rating	Operating Flow @ Static Pressure	Curve Ref	Approval Docs
VDO-500-2D/3-5/31,5/AL-300/2-60Hz	500 mm (20")	2-pole (3,456 RPM)	3.0 kW	5 blades / 31.5° / AL	3~400 V	300°C / 2 Hours	6,000–9,500 m³/h @ 200–500 Pa	p. 22 (Curve 4)	Submittal & Test Cert
VDO-500-4D/0,75-4/45/AL-400/2-60Hz	500 mm (20")	4-pole (1,728 RPM)	0.75 kW	4 blades / 45.0° / AL	3~400 V	400°C / 2 Hours	3,500–5,500 m³/h @ 80–180 Pa	p. 22 (Curve 6)	Submittal & Test Cert
VDO-630-2D/5,5-6/30/AL-300/2-60Hz	630 mm (25")	2-pole (3,456 RPM)	5.5 kW	6 blades / 30.0° / AL	3~400 V	300°C / 2 Hours	11,000–18,500 m³/h @ 300–750 Pa	p. 30 (Curve 3)	Submittal & Test Cert
VDO-630-4D/2,2-6/30/AL-400/2-60Hz	630 mm (25")	4-pole (1,728 RPM)	2.2 kW	6 blades / 30.0° / AL	3~400 V	400°C / 2 Hours	7,000–11,500 m³/h @ 100–260 Pa	p. 30 (Curve 3)	Submittal & Test Cert
VDO-710-4D/4-8/30/AL-400/2-60Hz	710 mm (28")	4-pole (1,728 RPM)	4.0 kW	8 blades / 30.0° / AL	3~400 V	400°C / 2 Hours	12,000–20,000 m³/h @ 120–350 Pa	p. 36 (Curve 3)	Submittal & Test Cert
VDO-800-4D/7,5-6/35/AL-300/2-60Hz	800 mm (32")	4-pole (1,728 RPM)	7.5 kW	6 blades / 35.0° / AL	3~400 V	300°C / 2 Hours	18,000–29,000 m³/h @ 150–420 Pa	p. 42 (Curve 4)	Submittal & Test Cert
VDO-800-4D/11-8/30/AL-400/2-60Hz	800 mm (32")	4-pole (1,728 RPM)	11.0 kW	8 blades / 30.0° / AL	3~400 V	400°C / 2 Hours	22,000–35,000 m³/h @ 200–550 Pa	p. 42 (Curve 5)	Submittal & Test Cert
VDO-900-4D/15-8/35/AL-400/2-60Hz	900 mm (36")	4-pole (1,728 RPM)	15.0 kW	8 blades / 35.0° / AL	3~400 V	400°C / 2 Hours	28,000–44,000 m³/h @ 220–600 Pa	p. 48 (Curve 4)	Submittal & Test Cert
VDO-1000-4D/22-8/35/AL-400/2-60Hz	1,000 mm (40")	4-pole (1,728 RPM)	22.0 kW	8 blades / 35.0° / AL	3~400 V	400°C / 2 Hours	38,000–58,000 m³/h @ 250–700 Pa	p. 54 (Curve 4)	Submittal & Test Cert
VDO-1120-4D/30-8/35/AL-400/2-60Hz	1,120 mm (44")	4-pole (1,728 RPM)	30.0 kW	8 blades / 35.0° / AL	3~400 V	400°C / 2 Hours	50,000–78,000 m³/h @ 280–750 Pa	p. 60 (Curve 3)	Submittal & Test Cert
VDO-1250-4D/45-9/30/AL-400/2-60Hz	1,250 mm (50")	4-pole (1,728 RPM)	45.0 kW	9 blades / 30.0° / AL	3~400 V	400°C / 2 Hours	75,000–112,000 m³/h @ 300–850 Pa	p. 72 (Curve 3)	Submittal & Test Cert
VDO-1250-6D/30-9/30/AL-400/2-60Hz	1,250 mm (50")	6-pole (1,152 RPM)	30.0 kW	9 blades / 30.0° / AL	3~400 V	400°C / 2 Hours	55,000–85,000 m³/h @ 150–450 Pa	p. 72 (Curve 2)	Submittal & Test Cert

Operating Curve Selection Mandatory: The values above illustrate representative aerodynamic operating points from the official VDO 60 Hz catalogue curves. Final fan selection for Civil Defense submittals must be tailored to your project's calculated operating airflow and external static pressure drop, including ductwork, fire dampers, and sound attenuator losses. Contact our engineering team to generate the verified fan selection sheet with cold-mode and hot-mode operating lines.

Dimensions & Casing Schedule

VDO Casing Dimensions & Flange Drilling Schedule

Dimensions in millimeters for casing inside diameter (ØD), pitch circle diameter (ØD1), flange outer diameter (ØD2), bolt hole diameter (Ød), hole count (n), overall width (W), standard casing length (L), and shortened casing length (LK).

Swipe horizontally to view all casing sizes and flange measurements.

Model Size	Inside ØD (mm)	Pitch Circle ØD1 (mm)	Flange Outer ØD2 (mm)	Hole Ød (mm)	Holes (n)	Overall Width W (mm)	Length L (Std)	Length LK (Short)	Mass Range (kg)
VDO-400...	400 mm	450 mm	490 mm	8.0 mm	12 holes	525 mm	400 mm	300 mm	22 - 38 kg
VDO-450...	450 mm	500 mm	540 mm	8.0 mm	12 holes	580 mm	400 mm	300 mm	25 - 45 kg
VDO-500...	500 mm	560 mm	600 mm	12.0 mm	12 holes	620 mm	400 / 500 mm	350 mm	27 - 61 kg
VDO-560...	560 mm	620 mm	660 mm	12.0 mm	12 holes	680 mm	500 mm	350 mm	38 - 85 kg
VDO-630...	630 mm	690 mm	730 mm	12.0 mm	12 holes	750 mm	500 / 600 mm	400 mm	48 - 120 kg
VDO-710...	710 mm	770 mm	810 mm	12.0 mm	16 holes	845 mm	600 / 700 mm	450 mm	65 - 165 kg
VDO-800...	800 mm	860 mm	900 mm	12.0 mm	16 holes	925 mm	600 / 750 mm	500 mm	85 - 240 kg
VDO-900...	900 mm	970 mm	1015 mm	15.0 mm	16 holes	1025 mm	700 / 850 mm	550 mm	110 - 320 kg
VDO-1000...	1000 mm	1070 mm	1115 mm	15.0 mm	16 holes	1140 mm	750 / 950 mm	600 mm	140 - 450 kg
VDO-1120...	1120 mm	1190 mm	1270 mm	15.0 mm	20 holes	1280 mm	800 / 1100 mm	650 mm	180 - 620 kg
VDO-1250...	1250 mm	1320 mm	1400 mm	15.0 mm	20 holes	1450 mm	900 / 1250 mm	750 mm	240 - 890 kg

VDO Full Order Code Designation Key

Decoding Guide

Diagram explaining diameter, poles, motor kW, blade angle, and fire rating

VENTS VDO full order code breakdown diagram and engineering designation guide

VDO Complete Mounting & Fire Accessories Scheme

Installation

Layout of fire-rated flexible joints, dampers, silencers, and brackets

Engineering Support

Smoke-Control Engineering & Selection Principles

Key technical considerations regarding life-safety smoke exhaust vs. stair pressurisation, fire temperature classes, motor pole speeds, and smoke air density corrections.

VDO Smoke Extraction vs. VPVO Pressurisation

VDO is engineered strictly for hot smoke and combustion gas extraction (negative pressure exhaust). VPVO (covered in separate catalogue sections) is an overpressure supply fan engineered to inject clean outside air into escape stairwells and elevator shafts.

300°C/2h vs. 400°C/2h Fire Resistance Ratings

Ratings reflect independent laboratory furnace testing under EN 12101-3. Select '-300/2' (F300) for standard car parks and commercial buildings where code requires 300°C for 2 hours, or '-400/2' (F400) for severe industrial, high-heat, or heavy fire-load shafts.

Single-Speed vs. Dual-Speed (Dual-Duty Mode)

Single-speed fans operate strictly upon fire alarm activation. Dual-speed fans (e.g. 4/8-pole Dahlander or separate windings) run continuously at low speed for everyday parking garage ventilation, switching instantly to high speed during fire emergencies.

Smoke Air Density & Static Pressure Calculation

Hot smoke has significantly lower density (~0.62 kg/m³ at 300°C vs 1.2 kg/m³ at 20°C). Cold commissioning tests require more motor power than hot operation; motors must be sized to prevent overload during cold testing and emergency operation.

Key Features

VENTS VDO Series Engineering Highlights

Life-safety design characteristics of the high-temperature axial smoke extraction fan series.

Certified high-temperature fire resistance rating for 2 hours at 300°C (-300/2) or 400°C (-400/2)

Full catalogue aerodynamic performance curves verified for 60 Hz operations up to 125,000 m³/h

High-strength cast aluminum alloy aerodynamic impeller blades with adjustable setting angles (20° to 45°)

Heavy-gauge cylindrical carbon steel casing with rolled flanges and durable industrial powder coating

Standard casing length (L) fully covering motor, or shortened casing (K) for restricted mechanical shafts

Three-phase electric motor (3~400V 60Hz) with Class H insulation and sealed IP55 terminal connection

Dual-duty capability supporting continuous ambient ventilation (-60°C to +50°C) and emergency fire mode

Complete matching fire-rated accessories including VVGF-VO...400/2 flexible joints and KOM-VO...400/2 dampers

Specifications

Category Technical Specifications

Comprehensive engineering specifications for VDO high-temperature axial smoke extraction fans.

Swipe horizontally to compare all specifications.

Specification	Engineering Details
Product Category	Inline Fan / Axial Fan
Product Type	High-Temperature Axial Smoke Extraction Fan
Model Series	VENTS VDO Series (VDO-400 to VDO-1250)
Casing Sizes Available	400, 450, 500, 560, 630, 710, 800, 900, 1000, 1120, and 1250 mm
Airflow Volume Range	3,500 to 125,000 m³/h (2,060 to 73,570 CFM catalogue range)
Static Pressure Capability	Up to 1,500 Pa depending on diameter, blade angle, and motor speed
Fire Resistance Rating	300°C / 2 Hours (-300/2) and 400°C / 2 Hours (-400/2) EN 12101-3 references
Continuous Operating Temp	-60°C up to +50°C ambient air (climatic category U1/T1)
Motor Specification	Three-phase squirrel-cage induction motor, Class H insulation, IP55 ingress protection
Electrical Supply	3~400V 60Hz (3~380–400V 60Hz project submittal nameplates)
Impeller Construction	Dynamically balanced hub with cast aluminum alloy aerodynamic profile blades
Casing Construction	Heavy-gauge rolled steel casing with integral metric flanges, polymer powder finish

Fire-Rated Assembly

Standard Inclusions vs. Certified Fire-Rated Accessories

Base fan scope vs. matching high-temperature flexible joints, fire dampers, and silencers certified for emergency smoke service.

Standard Inclusions (Base Fan)

Supplied with every base VDO smoke extraction fan assembly

Heavy-Gauge Rolled Steel Cylindrical Casing with Integral Connecting Flanges
Cast Aluminum Alloy Axial Impeller with Preset Factory Blade Angle
High-Temperature Fire-Rated Three-Phase Electric Motor (Class H / IP55)
External Sealed Electrical Terminal Box Mounted on Casing Exterior
Factory Anti-Corrosion Industrial Polymeric Powder Coating (VENTS Blue)
Factory Dynamic Balancing Certificate & Quality Inspection Sheet

Certified Fire-Rated Accessories (Quoted Separately)

Specify matching certified 400°C/2h accessories during quotation review

VVGF-VO...400/2 High-Temperature Fire-Rated Flexible Duct Connectors (400°C / 2h)
KOM-VO...400/2 High-Temperature Fire-Rated Smoke Backdraft Dampers (400°C / 2h)
F-VO Matching Circular Steel Counter-Flanges for Duct Connection
SR / SRV Cylindrical Duct Attenuators / Silencers for Acoustic Attenuation
O-VO Heavy-Duty Floor & Wall Mounting Brackets / Carriers
VVCp / VVCr Heavy-Duty Spring & Rubber Anti-Vibration Isolator Mounts
ST-VO Rooftop Mounting Curbs and VK-VO / VD-VO Weather Exhaust Cowls

Applications

Where VDO Smoke Extraction Fans Are Deployed

High-temperature emergency smoke removal and dual-duty ventilation across commercial, residential, and industrial facilities.

Car park smoke extraction

Evacuates thick combustion smoke, CO, and hot toxic gases from enclosed garages

Smoke-spill building shafts

Discharges hot fire gases through vertical masonry and metal duct shafts

Atrium smoke reservoirs

Extracts stratified hot smoke plumes collected under high architectural ceilings

Industrial plant safety

Provides emergency smoke evacuation for turbine rooms, boiler halls, and refineries

Dual-duty parking ventilation

Provides daily exhaust of vehicle fumes, boosting to high speed during fire emergencies

Refuge floor ventilation

Ensures smoke-free perimeter containment in designated high-rise refuge zones

Rooftop smoke discharge

Mounted on roof curbs with cowl accessories for vertical discharge to atmosphere

MEP submittal procurement

Supplied with full VDO code, factory curve, test certificate, and Saudi submittal

Stairwell & lobby pressurisation notice: VDO fans are dedicated negative-pressure smoke extraction fans. If your life-safety design specifies positive-pressure supply air for escape staircases or elevator lobbies, a dedicated pressurisation fan (such as the VPVO series) is required. For non-fire industrial ducted ventilation, explore our VMD-A Axial Inline Fan or VKF Inline Axial Duct Fan.

Selection support

What to Send for Correct VDO Smoke Fan Selection

Provide your operating airflow at external static pressure, required fire class (300°C/2h or 400°C/2h), operation mode (single or dual-speed), duct diameter, and delivery city in Saudi Arabia.

Required operating airflow in m³/h or CFM at actual design static pressure (not free-air CFM)

Total system external static pressure in Pa or in. w.g. (including ductwork, silencers, and dampers)

Fire resistance class: 300°C / 2 hours (-300/2) vs. 400°C / 2 hours (-400/2)

Operation mode: emergency fire-only (single speed) vs. dual-duty ventilation + smoke (two speed)

Nominal duct diameter: 400, 450, 500, 560, 630, 710, 800, 900, 1000, 1120, or 1250 mm

Electrical power supply: 3~400V 60Hz (confirm project submittal voltage 380V vs 400V)

Mounting arrangement: horizontal inline duct, vertical shaft, or rooftop curb installation

Certified accessories required: fire-rated flexible joints, fire dampers, silencers, or isolators

Downloads

Documents & Compliance Submittal Packages

Download the official VENTS VDO 60 Hz catalogue (PDF, 10.6 MB, 96 pages) and request official test certificates and technical submittals for Civil Defense approval.

Download VDO 60Hz catalogue (PDF, 10.6 MB)Download PDF

VDO Full Order Code Designation & Curve GuideRequest Guide

Fire Resistance Test Certificate (300°C/2h & 400°C/2h)Request Certificate

MEP Technical Submittal & Compliance PackageRequest Submittal

Cloud Electricals Saudi Commercial Compliance (CR/VAT/COC)Request Compliance

Related Commercial & Industrial Inline Fans

Explore other axial and centrifugal inline fan series for non-fire general ventilation or high-pressure applications.

Axial Inline Fan (VMD-A Series)

Heavy-duty cylindrical axial inline fan for non-fire general commercial and industrial ventilation

View Details

VKF Inline Axial Duct Fan

Flanged low-pressure inline axial duct fan for general clean-air supply and room exhaust

View Details

Centrifugal Box Inline Fan

Acoustic insulated centrifugal cabinet fan for commercial ducted supply and exhaust systems

View Details

CBA Direct Drive Centrifugal Blower

Heavy-duty industrial centrifugal blower for medium to high-pressure ducted ventilation

View Details

FAQ

VDO Smoke Fan Questions

Authoritative answers for fire-safety consulting engineers, MEP contractors, Civil Defense inspectors, and procurement teams in Saudi Arabia.

A complete VDO order code follows the VENTS designation key: e.g. VDO-630K-2D/5,5-8/35/AL-U1-300/2-60 Hz. This identifies: series (VDO), casing diameter (630 mm), casing type (standard or K shortened), motor pole/speed (2-pole, three-phase D), motor power (5.5 kW), blade count (8 items), blade setting angle (35°), blade material (AL aluminum), climatic category (U1), fire rating (300°C/2h), and electrical frequency (60 Hz). Orders cannot be placed without this full engineering designation.

Quotation Request

Request VDO Smoke Extraction Fan Quotation

Send your required operating airflow (CFM or m³/h), design static pressure (Pa), fire rating (300°C/2h or 400°C/2h), speed mode, voltage, and project city in Saudi Arabia. Our smoke ventilation engineering team will generate certified curves and submittal packages.

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VDO Axial Smoke Extraction Fan

Life-Safety Selection & Civil Defense Compliance Mandate

Is the VDO smoke fan suitable for your fire safety project?

VDO Series Documented Selection Schedule (60 Hz)

VDO Casing Dimensions & Flange Drilling Schedule

Smoke-Control Engineering & Selection Principles

VENTS VDO Series Engineering Highlights

Category Technical Specifications

Standard Inclusions vs. Certified Fire-Rated Accessories

Where VDO Smoke Extraction Fans Are Deployed

Car park smoke extraction

Smoke-spill building shafts

Atrium smoke reservoirs

Industrial plant safety

Dual-duty parking ventilation

Refuge floor ventilation

Rooftop smoke discharge

MEP submittal procurement

What to Send for Correct VDO Smoke Fan Selection

Documents & Compliance Submittal Packages

Related Commercial & Industrial Inline Fans

Axial Inline Fan (VMD-A Series)

VKF Inline Axial Duct Fan

Centrifugal Box Inline Fan

CBA Direct Drive Centrifugal Blower

VDO Smoke Fan Questions

What is the complete VDO order code structure?

Which configurations are rated 300°C/2h vs. 400°C/2h?

Is the published motor 380V or 400V at 60Hz?

Can one VDO fan serve both normal ventilation and emergency smoke exhaust?

Which starter, VFD, or control method is approved for fire mode?

Are the dampers, flexible connectors, and silencers fire rated?

What certificates and consultant submittal documents are supplied?

Is VDO for smoke extraction or stairwell/lobby pressurisation?

How is the operating CFM and static pressure selected?

Request VDO Smoke Extraction Fan Quotation