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Published by Tiffany Chan at Apr 24, 2020
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ADRIATIC VF

ADRIATIC VF Chilled Beam

ADRIATIC VF Chilled Beam

Exposed active chilled beam with heating cooling and ventilation

Products › Room Units     |     Introduction     Key Features     Basic Operation     Certification     Applications     Installation Details     Accessories     Dimensions     Documents

The Swegon ADRIATIC VF active climate beam with cooling, heating and ventilation.

The ADRIATIC VF is an enclosed climate beam with integrated recirculated air opening in the face plate. Air is discharged into the room along the ceiling on both sides. Integrated VariFlow air flow distribution allows for simple adjustment at the site. An attractive climate beam designed for undersurface or suspended installation.

  • Winn Center

Key Features

Primary Airflow Up to 125 CFM
Pressure Range 0.12 to 0.28 in WG
Cooling Capacity Up to 8200 Btuh
Heating Capacity Up to 11600 Btuh
Lengths From 48 to 142 in. (nominal); increments of 24 in
Widths 14.3 in.
Heights 6.8 in.

Basic Operation

The ADRIATIC VF is a closed, active climate beam with two-way air discharge. Cooling and ventilation or cooling, heating and ventilation. The units do not contain a fan of its own but is driven by the pressure and flow generated by a centrally located air handing unit, which means low sound level and excellent comfort in the room. The ADRIATIC models are designed for dry systems, i.e. without condensation and therefore does not require any condensate drainage system or any filter. The minimum number of moving parts and lack of filter guarantees very little need for maintenance.

The ADRIATIC VF chilled beams operate according to the induction principle. A centrally located air handling unit distributes primary air via the duct system into the plenum of the unit and creates excess pressure. The plenum is equipped with a number of sliding strips that in turn contain a row of nozzles of various sizes. The excess pressure in the plenum forces the primary air through the nozzles at relatively high velocity. When the primary air is distributed at high velocity through the nozzles, negative pressure is created in the space above the built-in heat exchanger (coil). The negative pressure draws (induces) the room air up through the heat exchanger where the air is treated as required.

Learn More

Induction Process

Active chilled beams utilize the induction process to cause room air to pass through the chilled beam to heat and cool the air and create a comfortable environment.

Read more

Induction Process

Active Chilled Beam Cross Section

An active chilled beam is basically a cabinet with a water coil. There are no moving parts such as a fan and motor (i.e. fancoil). To get air in the space to pass through the coil, the induction principle is applied using primary air from a main air handling unit. The room air is “induced” to pass through the coil by creating a low pressure zone above the coil. As air passes through the coil, it can be heated or cooled using hot or chilled water. The induced air and the primary air mixed and delivered to the room via diffusers that are designed into the chilled beam to optimize mixing and take advantage of the coanda effect.

Induction Ratio

Induction Ratio

The ratio of induced air to primary air is the Induction Ratio. For example, if 1 cfm of primary air induces 3 cfm or room air to pass through the coil, the induction ratio would be 3 to 1 and 4 cfm would be delivered through the diffuser to the space.

Induction Process

The reason the induction process works can be seen in Bernoulli’s principle.

 

 

Said in words, if you increase the kinetic energy (the speed) of a fluid then its pressure must go down. In a chilled beam, the primary air passes through a nozzle bank and its speed increases, thus its pressure goes down and low pressure area is created downstream of the nozzle bank (above the coil).

This principle is how perfume atomizers and carburetors work, why sail boats can sail into the wind and of course, why airplanes fly.

To get room air to pass through a coil, work is being done and energy used. In a fancoil, the energy is electricity that the fan motor consumes to operate the fan. In a chilled beam the energy source is the primary air handling unit. The primary air must be delivered to the chilled beam and overcome the pressure drop of the nozzle bank. The nozzle bank requires more external static pressure at the air handling unit. Typically the fans and motors in air handling units are much more efficiency that mall fans and motors used in terminal products.

One way to look at the energy usage in a chilled beam is to consider the air flow rate (cfm) as equal to electrical current and the pressure drop of the nozzle bank as equal to voltage. Some combination of airflow are and pressure drop (i.e. voltage and current) will provide the necessary energy to draw room air through the coil.

Modern chilled beam design has advanced to the point where the pressure drop across the nozzle bank is less than a 0.25 inches w.c. and typically around 0.5 inches w.c. for the whole chilled beam (which includes the diffuser components.)

Induction Process in Swegon PACIFIC Chilled Beam

Induction Process in Swegon PARASOL Chilled Beam

Nozzles

cb slot nozzles

Chilled Beam Slot Nozzle

cb round nozzles

Chilled Beam Round Nozzle

Nozzles come in all sorts of shapes and sizes.  A orifice plate is a nozzle. Nozzle design in chilled beams has evolved to create the best induction result with the lowest pressure drop and noise level. 

Nozzle selection is based a specific operating conditions and is very sensitive to changes in the design conditions.  As primary air passes through a small opening it accelerates.  In a very complicated fluid dynamics process, the shape of the jet profile, plenum geometry, jet velocity and other properties will create a low-pressure area I the plenum that will cause room air to be drawn into the plenum via the coil and then pass out through the diffuser slots back to the room. 

If the building design requires a small amount of primary air (i.e. “low current”) then the chilled beam selection will use small nozzles to induce more room air but requiring a larger pressure drop (i.e. “high voltage”) to get enough room air to pass through the coil to meet the cooling and heating demands.  In short, the induction ratio will go up. 

nozzle K factor

Nozzle K Factor

Changing the nozzle size and properties is known as changing the k factor. k factors are listed on the chilled beam printouts and can be used by the balancing contractor to measure the amount of primary air entering the chilled beam.

Where

q = (primary) airflow in cfm or l/s

K = k factor (note the k factor has a different value for SI or IP units)

P = the pressure drop across the nozzle bank in Pa or inches w.c.

If the chilled beam is manufactured with a fixed nozzle size (fixed k factor), then any changes in the design conditions in the future will be very limited. For example if the space ventilation rate, cooling or heating loads change appreciably, adjustments in the beam performance will be very restricted to the point where the beam may need to be replaced.

Nozzles gif

Adjustable Nozzles

Adjustable nozzles solve this issue by allowing the nozzle design to changed as the needs of the space evolve. You can change the K factor in the field. Adjustable nozzles must be built into the product at time of manufacture. Most nozzle adjustments can be achieved by hand or with hand tools.

Modulating Nozzles

The ultimate form of adjustability is a Demand Control Ventilation or VAV chilled beam where the nozzle adjustment is motorized and varies based on the amount of primary air entering the chilled beam. DCV chilled beams have variable k factors than maintain the induction process over a large primary airflow rate. As the primary airflow rate is reduced to save energy, the k factor changes and the induction process continues allowing space control. Click here to learn more Chilled Beam Design.

Induction Principle

  • The ADRIATIC VF has an attractive design and extremely low installation height that fits well in all types of room décor.
  • Since the ADRIATIC VF is a closed climate beam with integrated recirculating air opening in the face plate, it can be mounted directly against the ceiling without affecting circulation air slots.
  • The ADRIATIC VF combines the superior air discharge properties of ceiling units with the stringent design requirements of suspended climate beams. The discharge of air along the ceiling provides the optimal Coanda effect that is always the objective when it is desirable to maintain low air velocities in the occupied zone.
  • The connection components, valves and dampers are concealed in a simple manner by an attractive connection casing. The casing installed after the climate beam has been suspended and connected.
  • Swegon’s ADC air diffusers, which are standard, provide for the adjustment of the air throw performance of the climate beam.
  • Integrated VariFlow airflow distribution for simple volume adjustment on-site. The airflow can be varied to suit the application by means of nozzle strips. The fixed nozzles guarantee that the airflow will be correct and all-in-all offers a flexible and simple solution.

Learn More

Anti Draught Control (ADC)

Delivering a comfortable environment is more than just heating and cooling the space, it requires well distributed air.  Swegon Anti Draught Control (ADC) helps change air flow patterns for the best comfort level.

Read more

Anti Draught Control

Swegon Test Lab set up to check air distribution mimicking computer and occupant heat sources

Chilled beams not only provide heating, cooling and ventilation air, they are the air distribution component that delivers  good thermal comfort.  Being able to adjust the airflow pattern from the chilled beams is critical to delivering optimal occupant comfort.  As the building use evolves (re-purposing) the space loads and layouts change often requiring air pattern adjustments to maintain thermal comfort.

ADC Parasol

ADC in Swegon PARASOL Chilled Beam

cb slot nozzles

To achieve air pattern control Swegon chilled beams can adjust the airflow pattern by means of Anti Draught Control (ADC).  ADC consists of a number of sections with adjustable fins arranged in the outlet of the unit with a simple grip of the hand, the fins can be set to an appropriate angle in 10 degree increments to direct the discharge air and in this way create the desired air distribution pattern.

pacific adc

ADC in PACIFIC Chilled Beam

Adriatic ADC

ADC in ADRIATIC Chilled Beam

gold

ADC in PARAGON Chilled Beam

Fan Shaped Airflow

fan shaped airflow pattern

The ADCs are adjusted to spread the primary and induced airflow evenly in all directions across the ceiling for maximum even air distribution.

X Shaped Airflow

X shaped airflow pattern

The ADCs deliver an X pattern airflow that avoids the airflows from to adjacent beams running into each other and breaking away from the ceiling resulting in “dumping”.  The X pattern allows more chilled beams in the ceiling for increased cooling capacity (i.e. a computer classroom) without compromising thermal comfort.

Flex Shaped Airflow

Flex shaped airflow pattern

The ADC biases the airflow pattern in one direction to increase throw and focus cooling or heating capacity yin a particular part of the room such as an exterior wall.  Alternatively, if the space is repurposed and a new partition is built near the chilled beam, the airflow pattern can be directed away from the partition avoiding relocating the chilled beam.

To achieve the best thermal comfort and account for future changes in the space (repurposing) ADRIATIC VF Chilled beams include Flexible nozzle configuration by means of VariFlow and Anti Draught Control (ADC).

The ADRIATIC VF climate chilled beam’s adjustable nozzles allow the capacity of the chilled beam to be factory or field changed by adjusting the nozzle strips. Each nozzle strip is 24 in. long and can easily be adjusted with a supplied tool to the required position. There are three different settings on each nozzle strip:

L = Low for low airflows,
M = Medium for medium airflows,
H = High for high airflows

There are different numbers of nozzle strips depending on the nominal length:

48 in 4 nozzle strips (2+2 strips)
72 in. 6 nozzle strips (3+3 strips)
96 in. 8 nozzle strips (4+4 strips)
120 in. 10 nozzle strips (5+5 strips)
144 in. 12 nozzle strips (6+6 strips)

Change of nozzle configuration using an adjustment tool

Each side of the nozzle strips can also be configured for asymmetrical airflows. The number of nozzle strips for a certain length of beam is always the same.

Symmetrical air distribution with VariFlow

Asymmetrical air distribution with VariFlow

Displaced air distribution with VariFLow

The goal of a well-designed and operated chilled beam system is to obtain even temperature distribution throughout the space and avoid drafting (too fast air movement). To achieve this, The Swegon ADRIATIC VF climate chilled beams contain ADC as a standard. ADC stands for Anti Draught Control, which enables the diffusion pattern of the distributed air to be set up to avoid the risk of draft.

A ADC consists of a number of sections with adjustable fins arranged in the outlet of the beam with a simple grip of the hand. The fins are adjustable from a straight setting to 40° air deflection to the right or left in increments of 10°. In this way, the fins can be set to an appropriate angle to direct the discharge air and create the desired air distribution pattern. The static pressure is not affected by ADC. The sound level increases slightly when the air deflectors are set for “V-shape”. For more information, see the Swegon Proselect program.

The standard setting for ADC is straight but the unit can be supplied factory-preset to a V-shape distribution pattern if desired.

cb-adc

Flexible air discharge with ADC

1- Climate beam with ADC set to V-shape
2 – Climate Beam with ADC set to L-shape
3 – Climate Beam with ADC set for avoiding obstacles

Swegon chilled beam ADC control

The ADRIATIC VF with ADC offers many benefits:

  • Shorter center to center distance between  climate beams when higher capacity is required
  • Simple correction of the direction of air discharge
  • Easy to adjust the comfort setting on site
  • Great flexibility for future conversion

Certification

etl logo

The Swegon ADRIATIC VR is Eurovent certified, which is your guarantee that all specified data has been confirmed by tests and has been validated. This includes data provided in Swegon’s selection software, ProSelect Web.

In Addition, the ADRIATIC VF chilled beam is certified by Intertek to UL 1995- Heating and Cooling equipment and CAN/CSA C22.2.

Applications

ADRIATIC VF Chilled Beam

The ADRIATIC VF climate beam is designed to be exposed in the space. The casing is finished and can be supplied in a range of standard colors. The ADRIATIC VF is well-suited for use in all types of rooms with waterborne climate cooling:

  • Offices and conference rooms
  • Hotels
  • Classrooms
  • Data Processing rooms
  • Bank premises
  • Restaurants

The ADRIATIC VF finished design makes it an excellent choice  for open ceiling concepts.  The beam can be mounted directly to the ceiling or suspended pendant style.

ADRIATIC VF installed to ceiling 

Cornell Gates Hall comp lab

ADRIATIC VF installed pendant style

The ADRIATIC climate beam comes standard with the 5-inch diameter air and water connections stubbed out horizontally at one end.  Both 2 pipe and 4 pipe beams are available.

Cornell Gates Hall conf room Adriatic

ADRIATIC VF Climate Beam with horizontal end connections

THE ADRIATIC VF can also come with an extended finished cabinet to cover the air and water connects turned up vertically into the ceiling providing a clean look with air-water connections hidden from view. Piping and elbows can be supplied by Swegon or field supplied.

Swegon’s T-KA connection casing can be mounted in the extended section of the ADRIATIC VF beam and beyond to a wall designed to conceal horizontal pipe and duct connections. The T-KA has the same finish as the climate beam providing a clean installation.

t-ka-connection-casing-extension

T-KA Connection Casing Extension

ADRIATIC VF Climate Beams in series with T-KA cover kits

In some applications, it may be possible to connect two ADRIATIC VF climate beam is series to reduce installation costs and deliver a cleaner installation. This will depend largely on the airflow and capacity requirements. Contact your Swegon Representative to ascertain if this is possible for your project.

ADRIATIC VF chilled beam performance can be calculated using Swegon’s ProSelect Software. The Swegon application team can assist with your chilled beam applications ranging from selections to full system design review with DesignEdge.

Learn More

Swegon ProSelect Software

Web-based software for easy dimensioning and selection of room products: induction units, air diffusers, displacement units and products for demand-controlled ventilation.

LEARN MORE

Cooling

The cooling capacities have been measured in conformance with EN 1516 Standard. Detailed performance data are available in ProSelect with the following info:

  • The length of the climate beam (inches)
  • The primary airflow (CFM)
  • The noise level for an open damper, with ADC
  • Nozzle pressure (inWG)
  • Airborne cooling capacity (BTUH)
  • Waterborne cooling Capacity (BTUH)
  • The total cooling capacity (sensible) is the sum of the airborne and waterborne cooling capacities.

The total cooling capacity (sensible) is the sum of the airborne and waterborne cooling capacities.

adriatic-cooling-capacity

Cooling Capacity (BTUH), Natural convection

Heating

The heating function is intended for use only as a supplement if surplus heat is available; however, during shorter periods (like in the evening and at night), a certain amount of surplus heat will be needed. The supply air fan must be in operation for the additional heat to reach the room. The supply air is used for mixing the warm air with chilled primary air, which is why the temperature distribution in the room is completely dependent on the ratio between supply air and the capacity taken from the chilled beam. The heat is conducted along the ceiling. A temperature gradient of 9.7 °F is normally obtained between floor and ceiling.

 

Recommended for heating operation

Max coil  entering water temperature: 140 F
Min.  hot water flow rate : 0.21PM
Nozzle pressure >0.12 in WG
Min. permissible heating water flow*: 0.21 GPM
For Perimeter walls with large glazed surface, it is recommended that radiant heating in the ceiling or radiators along the perimeter wall be used for compensating the radiant cooling energy of the glazed surface. Contact Swegon for details.

 

Recommended limit values – water

Max. recommended coil operating pressure 230 PSI
Max. Recommended test pressure for testing a complete installation 350 PSI
Recommended min. cooling water flow: 0.5 GPM
Increase in temperature, cooling water: 3.6 – 9 F
Min. primary air temperature: Should always be sized to avoid any condensation
Decrease in temperature, heating water: 3.6 -18 F
Max. coil entering water temperature 140 F
Recommended min. hot water flow 0.21 GPM
The min. recommended water flow per circuit ensures evacuation of any air pockets in the circuit.

Installation Details

Cornell Gates Hall

ADRIATIC Climate Beams installed pendant style

adriatic-install-directly-against-ceiling-md4

ADRIATIC VF installation directly against the ceiling

The ADRIATIC VF climate beam is designed to be mounted flush to the ceiling or hung pendant style below the ceiling.

adriatic-fig21

ADRIATIC VF installation suspended below the ceiling

For flushing ceiling mounting the MD4S brackets can be used.

tka connection cover kit install

TK-A connection cover kit installation

For pendant style installations, the MS M8 kit can be supplied. It includes threaded rods of various lengths(7.9, 19.7 and 39.4 in.). Specify the length required as needed. The set contains plastic caps designed for concealing the threaded rods and giving the beam a more attractive appearance. Ceiling mounting brackets, nut and washers are included in the set.

Accessories

CRP Commissioning Damper

Circular commissioning damper with a Perforated damper blade designed for climate beam installations and a manual actuator with knob.

FH Flexible Connection Hose

Flexible hose with stainless steel braided jacket. Choice of lengths and threaded or push-fit connection to building water supply system.

SYST CA Angled Duct Connection

Connection piece for vertical connection, 90°

T-KA Connection casing, connection against a wall

Connection casing to be mounted in the extended section of the ADRIATIC VF beam and beyond to a wall designed for concealing pipe and duct connections.

MD4S Assembly Piece

Special assembly piece for installation directly against the ceiling.

SYST MS M8 Assembly Piece

Assembly piece for suspended installation containing threaded rods of various lengths (7.9, 19.7 and 39.4 in.). Specify the length required as needed. The set contains plastic caps designed for concealing the threaded rods and giving the beam a more attractive appearance. Ceiling mounting brackets, nut and washers are included in the set.

Dimensions

Click on the tabs below to learn more

  • Adriatic

Adriatic

5 in. duct connection, end view.

A = Cooling, 1/2″ NPT threaded connection or stub out for flexible hose.

5 in. duct connection, end view.

B = Heating, 1/2″ NPT threaded connection or stub out for flexible hose.

Horizontal connections in end panel, long side view.

L = Length, ADRIATIC VF
Lu = length to the division of the face plate.

Length, Adriatic VF
Nominal dimensions: 48, 72, 96, 120, 144 in
Length: Nominal – .6 in (+ .2 to -.1 in)
Length to the division of the face plate, LU = L/1

Horizontal connections in end panel (-OH), top view.

Internal connections (-I), long side view.

L = Length, ADRIATIC VF
Lu = length to the division of the face plate.

Internal connections (-I), top view.

SYST MS M8 assembly piece.

MD4S assembly piece.

Internal connections (-I), vertical connections.

Dimensions, vertical connection to the climate beam

a b c d
6.8 in.. 4.7 in. 7.1 in. (length of hose) 2.8 in.

CRPc 9-125 Commissioning damper.

Dimensions, SYST CRPc 9-125

a b c d
7.2 in. 4.9 in. 1.6 in. 1.7 in.

Flexible connection hose. SYST FH.

FI = compression fitting, specify length.
F20 = push-fit both ends, specify length.
F30 = push fit to chilled beam, 1/2″ NPT connection to building chilled water supply. Specify length.

Contact the nearest Swegon office for flexible hose options.

Find Documents

You can find more documents on our document search page.

LinkTitleArticleProduct GroupDocument TypeFormatdocument_type_hfilter
ETL CertificationADRIATIC VFcADRIATIC, Room UnitsQualitypdfquality
Exposed Active Chilled BeamADRIATIC VFcADRIATIC, Room UnitsProduct Sheetpdfproduct-sheet
Submittal SheetADRIATIC VFcADRIATIC, Room UnitsOtherpdfother
Connection Casing – Installation InstructionADRIATIC T-KAADRIATIC, Room UnitsInstructionspdfinstructions

See more Room Units

ADRIATIC VF
ADRIATIC VF Chilled Beam
frb
FRB Chilled Beam
PACIFIC
PACIFIC Chilled Beam
Paragon Wall
PARAGON Comfort Module
Parasol
PARASOL Comfort Modules
PRIMO
PRIMO Chilled Beam

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Swegon offers AIA and PDH certified course to support your professional development needs.

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Tiffany Chan
Tiffany Chan
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