Destratification Fan Units DRF-VK & DRF-VKM & DRF-OV

Destratification Fan Units DRF-VK & DRF-VKM & DRF-OV Thermal Stratification – Number One Reason for Energy Waste in Todays Buildings

Tel: 1-888-640-0925 Tel: 513-348-3853 Fax: 513-268-4597 [email protected] VentsUS.com 11013 Kenwood Road Cincinnati, Ohio 45242 820F Ceiling

770F

0 64 F Floor What is Thermal Destratification? 820F Ceiling

Destratificator is one of the simplest and most cost-effective ways to lower energy costs and Ceiling 0 create an exceptionally comfortable thermal environment for inhabitants during both heating and 82 F Ceiling 0 cooling seasons. A destratificator gently directs the conditioned air at the ceiling77 F to a required place at floor level.

0 77 F 0 64 F Floor

820F Ceiling Cold Weather Problem Cold Weather Fix

0 Floor 64 F Floor

Naturally770F in any heated building, Moving the superheated air at warm air migrates to the ceiling. 820F Ceiling the ceiling - where it obviously Ceiling On the average the temperature doesn’t do anybody any good - 0 increases64 F Floor by 0.5 -1°F for each down to the floor level with a elevated Ceiling foot. This means, for destratificator is one of the least example, it can be as much as 10 - 770F expensive and easiest ways to

20°F hotterCeiling at the ceiling of a 20 lower utility bills drastically with ft. high facility as compared to the the added bonus of generating a Cold and hot air floor. The painful economic reality 640F more comfortable environment resistance is that you pay for energy (heat) Floor for people inside. Floor that is quite literally going through the roof (fig.1).Floor Floor

Ceiling Hot Weather Problem Hot Weather Fix

Cold and hot air An added factor is introduced in Installing Destratificators near resistance ColdConditioned and hot air air buildings with air conditioning. the cold air registers will activeresistance pushing The cold air coming out of actively direct the conditioned the ductworks at the ceiling is air where required, which results Cold and hot air fighting the rising Floor warmer air. in tremendous energy savings. resistance The traditional solution has Moreover, it reduces wear and tear always been to install lots of and prolongs service life of the Conditioned air refrigeration units as a way to already installed air conditioning active pushing force out the rising hot air with equipment due to lower operating warm air. It has been estimated load. that up to 40% of the input energy for air conditioning is just wasted as it pumps out massive cold air volumes in Conditioned air attempts to overpower warm air that is formed at the floor. active pushing Cold and hot air Conditioned air resistance active pushing HOW TO ARRANGE А CORRECT HOT OR COLD AIR CONVECTION?

WE SUGGEST YOU THE BEST SOLUTION WITH OUR BRAND NEW DESTRATIFICATION FANS!!!

The VENTS Destratificator is a perfect solution for almost any commercial, educational, Conditioned air governmental or industrialactive pushing buildings with 12 - 30 feet ceiling height. Extract the maximum benefits from the heating and air conditioning you pay for with VENTS Destratificators!

Lower Less HVAC energy losses system load

Bad Good working working environment enwironment

Fig.1 Negative heating stratification. Fig.2 Smart heating destratification.

Benefits are clear:

• Up to 50% reduction of heating costs and 35% reduction of cooling costs. Longer HVAC equipment service life • More comfortable working environment

• Low operating costs • 12 - 24 months investment return • Easy mounting without HVAC ducting

Fig.3 Air conditioning destratification in a grocery shop.

How Many do we Need?

The rule of thumb for the healthy environment is to provide indoor air circulation once or twice per hour. So to determine the number of the destratification needed use this formula: General rule calculation

step 1 L x W x H = V (Height x Width x Length = Air Volume in Building)

V CFM 60 N step 2 / / = (Air Volume in Building) (the CFM of the Destratificator) (converts CFM to CFH) (Number of the units)

For example, a building is 125 ft long, 75 ft wide, and 20 ft high.

 125 x 75 x 20 = 187,500 cu. Ft

 187,500/ 920 (for DRF-VKM 315) / 60 = 3.39 Destratificators (Always round up to the next number. In this case 4 Destratificators are required.) DRF-VK Design

• Air Intake Head for more Efficient Intake of the hot air from under the ceiling space. • Sound Attenuating Сover of Air Intake Head reduces noise reflection from the ceiling to the operating area. • Centrifugal Impeller with Backward Curved Blades creates strong pressure to enable Pow- erful Air Jet for effective destratification. • High-Efficient external rotor motor made in Germany. Equipped with built-in Thermal Overheating Protection with automatic restart. Motor Ball Bearings with selective lubricant oil ensure low-noise and Maintenance-Free fan operation. • Aluminium Guiding Nozzle to Enhance Air Jet even more. • UV-protected durable corrosion-resistant polymer case. • The fastening design is so simple that you can install the DRF-VK fan with your own hands easy and quickly. The special Rotating Mounting Bracket is used for reliable fixation of the destratification fan at any angle not only to the ceiling, but to the wall. • Tether for additional mounting Safety. • Build-in Temperature Control turns the fan on only when hot air is collected under the ceiling (Models DRF-VK...U).

DRF-VKM Design

• Air Intake Head for more Efficient Intake of the hot air from under the ceiling space. • Sound Attenuating cover of Air Intake Head reduces noise reflection from the ceiling to the operating area. • Centrifugal Impeller with Backward Curved Blades creates strong pressure to enable Powerful Air Jet for effective destratification. • High-Efficient external rotor motor made in Germany. Equipped with built-in Thermal Overheating Protection with automatic restart. Motor Ball Bearings with selective lubricant oil ensure low-noise and Maintenance-Free fan operation. • Aluminium Guiding Nozzle to Enhance Air Jet even more. • Metal with polymer coating for Superior Corrosion Resistance. • The fastening design is so simple that you can install the DRF-VKM fan with your own hands easy and quickly. The special Rotating Mounting Bracket is used for reliable fixation of the destratification fan at any angle not only to the ceiling, but to the wall. • Tether for additional mounting Safety. • Build-in Temperature Control turns the fan on only when hot air is collected under the ceiling (Models DRF-VKM...U).

DRF-OV Design • Axial fan combines Extremely Low Energy Demand and Powerful Air Jet. • High-Efficient external rotor motor made in Germany. Equipped with built-in Thermal Overheating Protection with automatic restart. Motor Ball Bearings with selective lubricant oil ensure low-noise and Maintenance-Free fan operation. • Durable metal case with polymer coating for Superior Corrosion Resistance. • The fastening design is so simple that you can install the DRF-OV fan with your own hands easy and quickly. The special Rotating Mounting Bracket is used for reliable fixation of the destratification fan at any angle not only to the ceiling, but to the wall. • Tether for additional mounting Safety. • Build-in Temperature Control turns the fan on only when hot air is collected under the ceiling (Models DRF-OV...U). Application

Privilege of the DRF-VKM & DRF-VK products DRF-VKM & DRF-VK destratification fan is equipped with a specially designed nozzle to attain the maximum possible destratification.

A unique mushroom-shaped airstream, initially narrow with wide opened reach, is the basic advantage of the DRF-VKM/VK destratification fans. The smart airstream profile produces higher air supply with lower velocity in operating areas to create a more comfortable

Smooth opening Installation height 29' (~9m) environment particularly where you need it. of DRF-OV airstream

Due to initially slimmer air jet profile the centrifugal Mushroom widening destratification fans DRF-VKM/VK applications of DRF-VK and DRF-VKM airstream are especially suitable for grocery shops and 6' (~2m) warehouses with high racks as compared to axial perating area

O destratification fans as the centrifugal models are able to eject airstream precisely into aisles with higher destratification efficiency whereas the axial models have to fight air resistance created by the racks.

DRF-OV Effective Destratificated Area

DRF-VK and DRF-VKM Effective Destratificated Area

Privilege of the DRF-OV product Axial fan of the DRF-OV destratificator combines high airflow and extremely low power demand. The axial DRF-OV models are especially suitable for wide open space premises. Due to high airflow in bigger areas you need less units and pay less energy costs to attain the desired microclimate!

Control

All VENTS destratification fans DRF-VKM & VK & OV can be supplied with a Built-in Speed Controller with Temperature Sensor (Models with "U" option). When the temperature exceeds the set point the speed controller starts the fan on at the set speed. As the air temperature drops below the set point the controller switches the fan off. As soon as the air temperature rises again and the temperature sensor exceeds the previously set temperature, the controller starts the motor ON automatically and it runs at the set speed. As a result, the fans only run when needed. Temperature settings range from 70°F to 95°F. Technical data

Max. Max. Airflow Air flow speed depending on DRF distance point, m/s Volts RPM CFM Watts Amps (L/s) 1m 2m 3m 4m 5m 6m 7m 8m 9m 10m 11m 12m 470 DRF-VK 315 120V, 60Hz 238 1.99 2180 6.4 3.9 3.0 2.3 1.8 1.6 1.4 1.2 0.9 0.5 0.3 0.1 (222) 430 DRF-VKM 250 120V, 60Hz 269 2.28 2710 7.5 5.5 3.8 2.7 1.7 0.9 0.5 0.3 0.1 - - - (203) 550 DRF-VKM 315 120V, 60Hz 258 2.21 2800 6.7 4.3 3.7 2.7 1.5 0.9 0.5 0.3 0.1 - - - (260) 420 DRF-OV 250 120V, 60Hz 60 0.51 1700 2.1 1.5 1.1 0.8 0.5 0.3 0.1 - - - - - 198 830 DRF-OV 300 120V, 60Hz 85 0.73 1655 4.6 2.9 1.6 1.1 0.8 0.5 0.3 0.1 - - - - 392 1460 DRF-OV 350 120V, 60Hz 162 1.38 1685 6.1 4.2 3.8 2.4 1.8 1.5 1.1 0.9 0.6 0.3 0.1 - 689

Overall dimensions

Dimensions [inch] Mass Type D D1 D2 H H1 H2 [lbs] DRF-VK 315 15 3/4" 5 1/2" 12 3/8" 25 5/8" 21" 2 1/2" 14.55

Dimensions [inch] Mass Type D D1 D2 H1 H H2 [lbs] DRF-VKM 250 13 9/16" 4 7/16" 9 13/16" 15 15/16" 23 1/16" 1 1/4" 7.5 DRF-VKM 315 15 13/16" 5 1/2" 12 5/16" 19 5/8" 26 15/16" 2 3/16" 8.7

D1 A Dimensions [inch] Mass 9,1 Type [lbs] A H H1 D D1

DRF-OV 250 15 3/16" 20 3/16" 15 3/16" 10 3/16" 13 7/16" 6.6 H 17 1/4" 23 7/8" 17 15/16" 12 3/16" 15 7/16" 11 DRF-OV 300 H1 DRF-OV 350 19 3/16" 27 5/16" 20 5/16" 14 3/16" 17 3/8" 13.2 D

Contacts

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