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Female coupling made of expended polypropylene (EPP) for connecting 43 mm thick ducts. The coupling is used as additional piece, for example when connecting ducts which were cut. Such coupling is put on the outer diameter of a duct. The female couplings are produced in the following diameters 125, 160 or 200 mm. Thermal conductivity 0.039 W / m*K Airtightness class ATC2 (old D) @ 110 Pa acc. to PNEN 17192201901

FLXHDPE and FLXHDPEA plastic ducts are used to air distribution in domestic ventilation systems. Relatively small diameters allow to hide the installation in ceilings, screeds or suspended ceilings. FLXHDPE and FLXHDPEA semirigid ducts are connected to other system components like plenum boxes or distribution boxes with a simple push fit connection. Application of seals on the FLXPLO plenum boxes’ spigots guarantees high air tightness system. FL XHDPE and FL XHDPEA semirigid ducting is made of highimpact polyethylene. This makes the entire ventilation ductwork very durable. FLXHDPEA ducts are complying with European norm EN 171922018 for rigid or semirigid nonmetallic ductwork, which defines the test methods and performance characteristics like airtightness, pressure drop, reaction to fire, resistance to external pressure , thermal resistance and microbial resistance. FLXHDPE75 semirigid ducts without an antibacterial coating are gray.

A femalemale coupling made of expanded polypropylene (EPP) is used to connect the EPP15 ducts, when the male part is cut off (e.g. when duct is shortened). The female coupling fits the outer diameter of the 15 mm duct. The couplings are produced in 125, 160 and 200 mm sizes. Thermal conductivity 0.039 W / m*K Airtightness class ATC2 (old D) @ 90 Pa acc. to PNEN 17192201901

The RAVAV regulator is dedicated for forced ventilation systems and is an important component for installations with variable air flow. The regulator casing is made of Z 275 galvanized sheet. Optionally, it is possible to use the 1.4301 stainless steel to build the casing. Casing sides with factoryinstalled EPDM rubber gaskets ensure tight connection to ventilation ducts. Inside the casing, the adjusting damper is also insulated (depending on the control mechanism). The servomotor is installed on the control unit casing so as to allow for thermal insulation of the system. The regulator is also available in the version with preinstalled 50 mm insulation and a galvanised steel shield. The measuring system based on aluminum impact pressure tubes and pressure relieve stub pipes ensures reliable measuring of the air flow. Sensor, control unit and servomotor are integrated in one device.

FLXPLO / FLXPRO plenum boxes are components of the FLXREKU system intended for domestic mechanical ventilation systems, also known as mechanical ventilation heat recovery (MVHR) or heat recovery ventilation. The low profile plenum boxes require less installation space than standard solutions, which is very convenient when they should not be prominent once concealed. This advantage helps free up usable indoor area. FLXPLO plenum boxes are made of galvanized steel sheet. Plenum boxes made from stainless steel are available on request. Available also insulated plenum box version FLXPLI and FLXPRI. These plenum boxes have inside a insulation lining made from 9 mm thick rubber foam. FLXPLO plenum boxes are equipped with duct connection spigot Ød2 with a EPDM seal – this type of connection with FLXHDPE ducting is airtight and easy to install.

The SLC and SRC rectangular duct silencers reduce the noise level in ventilation and A/C systems. This silencer type is usually installed between a fan and an air supply or exhaust duct, and upstream of air supply vents. All silencers are made of a housing and inner baffles. The housing is made from galvanized steel sheet and its ends are framed with steel sheet angles. All baffles inside the silencer have a round breast at one end and comprise a galvanized steel frame with a soundinsulating insert which absorbs the acoustic energy from the air flow. The soundinsulating insert is a set of nonflammable mineral wool panels. The outer surface of the soundinsulating insert is lined with a special abrasionresistant textile to protect the mineral wool from wear and tear. The mineral wool panels are finished with a glass fibre lining in black; this lining is suitable for systems with a maximum air flow rate of 20 m/s.

Round ventilation duct made of expanded polypropylene (EPP). The most important features of the product are rigid construction, low weight, easy assembly and good thermal insulation. EPP ducts, used, for example, as sections of the supply and exhaust ventilation systems with heat recovery, do not require additional insulation. The system eliminates the formation of thermal bridges. Ducts na fittings do not require additional couplings. Lenght EPP ducts 1 m sections Diameters 125, 160 and 200 mm. Wall thickness 43 mm Thermal conductivity 0.039 W / m*K Airtightness class ATC2 (old D) @110Pa acc. to PNEN 17192201901

The RACAV constant air velocity regulator keeps the air output steady in ventilation systems. The device works without any electric power supply and from the minimum pressure differential shown in Chart 1 to the maximum pressure differential of 1000 Pa. The air velocity stability may be reduced outside the range shown in the differential pressure chart. The regulator can be used in comfort or industrial air supply and air exhaust systems.

Ventilation bends 45˚ made from expanded polypropylene (EPP). Bends are produced in diameters 125, 160 and 200 mm. The standard wall thickness is 43mm (black colour). The connection method eliminates thermal bridges, no additional couplings are required. To create a 90° bend two 45° beds can be connected together. Thermal conductivity 0.039 W / m*K Airtightness class ATC2 (old D) @ 110 Pa acc. to PNEN 17192201901

Electrostatic precipitator eMOCarz was design for residential buildings. Compact size and exceptionally low pressure drop makes it suitable for residential heat recovery systems, with little impact on system performance. The filtration efficiency of ePM1 and ePM2.5 particles, the main component of smog, is as high as 95%. Polluted air initially passes through a steel mesh prefilter (which retains larger fractions), then is positively ionized in an electric field due to the “crown discharge” effect. In the last stage, the previously charged particles, are pulled by electrostatic force toward horizontally mounted aluminium plates (electrodes) and build up on their surface. Electrostatic filters (precipitators) have low power consumption (only few Watts), long service life and most of all there’s no need to exchanged dirty (clogged) filters. It is enough to clean in with water and detergent once or twice a year. There is a led status indicator on the casing.

The DATL/DAT dampers are designed for cladding with up to 50 mm thick insulation. The DATL/DAT dampers are a good choice when the ductwork closure must be airtight. The damper closure position can be read on the 0° to 90° dial of the control handle. The damper closure opening ratio can be fixed with a screw. DAT — airtight shutoff damper DATL — airtight shutoff damper with gaskets at flanged ends All DATL/DAT dampers of diameter 355 mm or greater have the damper closure pivot provided with extra bracing. All DATL/DAT dampers of diameter 450 mm or greater are supplied with the KITDSH damper mechanism control lever. Standard dampers are made from galvanized steel sheet.

The SLEFL flexible silencer is made of the Alnor Flex perforated duct. The sound insulating layer is 25 mm thick and clad in aluminium and polyester. The silencer is connected to the ductwork with male flanges made of metal. The product is available in two length sizes, 600 mm and 1200 mm. Other silencer versions are available on request with EPDM gaskets, female flanges, or in other length sizes. Insulation Insulation material glass wool. Insulation type trimmed from reel, flexible. Temperature range 20°C to +140°C Thermal insulation performance of mineral wool λ = 0.034 W/mK at 24°C Pressure drop See the enclosed diagram. Fire resistance The silencers are made from fireproof materials.

LDBST strut channel are available in 2 to 6 m long and 1.6, 1.9, 2.0, and 2.5 mm thick sections. The STRUT channels are the main components of HVAC and cooling installation systems and can come very handy in fastening of any suspended installations. The serrated inturned edges interlock with SNP, SNL and SNKL unistrut channel nut washers to hold the channel and its fastening bolts in place, as installed. The Strut channels are compatible with the STROF system for building roof supports and cantilever support arms. Note Outdoor roof structures require LDBSO strut channel with a full hotdip galvanic coating which provides longterms resistance to outdoor weathering.

The DSQWA rectangular multiblade aluminium dampers can be used to control and isolate air flow in rectangular ductwork. The dampers can be installed in ventilation ducts, as wallmounted air flow regulators, or AHU air flow regulating and shutoff units. All dampers have a housing made of 4 aluminium profiles and a closure consisting of aluminium blades. The blade height is the same for all product sizes. The blades are fitted with gaskets to provide air tightness class 2 as per EN 17512003. The DSQWA damper can have a handoperated damper mechanism QDMPSAL, an externallymounted actuator, or an actuator mounting. The damper mechanism is installed on the outer surface of the housing. The damper blade rotation mechanism features short and long shafts rotating by intermeshed gears installed on bearings. The gears are installed on the outer surface of the housing.

The FLXPLOEPPF plenum boxes are part of the FLXREKU air distribution system designed for domestic mechanical ventilation systems, socalled the MVHR system, to which an air valve and FLXHDPE / FLXHDPEA ducts with a diameter of Ø75 are mounted. Due to their small size, they do not require much space or special installation. This allows achieving a larger usable floor area of the room. The FLXPLOEPPF plenum boxes are made of expanded polypropylene, i.e. EPP, while Ø75 spigots are made of ABS. The material used allows obtaining an aerodynamic shape of the inside of the box which leads to low air resistance.

WKLDB cantilever support arms are designed for installing rectangular ventilation ducts directly along walls and for supporting heavy HVAC components, including A/C split indoor and outdoor units and AHUs. The additional bracing enhances the load capacity, permitting a wider clearance between the suspended installation parts and the walls

The smog filter is designed for effective filtration of the socalled particulate matter. The PM2.5 and PM10 particles are the main component of smog, which have an optical diameter of 2.5 and 10 μm (micrometers). The filtration efficiency (removal) of PM2.5 particles reaches up to 73%, and PM10 particles up to 81% (according to tests carried out with a dust particle measuring device). The smog duct filter consists of a sealed filter box and two filters prefilter and smog filter. It is recommended to install a smog filter on the supply ducts in domestic ventilation and heat recovery systems. In the MOCarzCA version prefilter I3 was replaced by an activated carbon prefilter (or activated charcoal). The main purpose of using such a material is deodorization of air and preliminary cleaning of dust and gaseous pollutants. Activated carbon has a huge adsorption surface, which effectively "binds" on its surface particles of pollutants, bacteria, hydrocarbons.

The DAOS dampers feature a split flap closure and allow the air flow to pass in one direction only. The aluminium closure flaps are pressed against a foam seal when closed to reduce the operating noise in the ductwork. The split flap closure is held closed with a spring gear, which makes it also possible to use the damper in vertical installations. A version intended for a fullmale insertion into the ductwork ends is available on special request.

Pressed bends are designed for building ventilation systems based on spiral and plain ducts. Seam welds provide air tightness class D without the need to use any other sealants. In ventilation and heat recuperation systems, the double EPDM gasket provides air tightness class D according to EN 12237. The piece is connected with a duct by inserting one into the other. The pressed form of the ventilation piece helps to reduce the flow resistance and the pressure loss.

The FDA212 round fire dampers are designed for use in general ventilation systems to seal off smoke and fire between adjacent fire partitions. The fire dampers are classified according to EN 135013+A12010P (Fire classification of construction products and building elements). The fire resistance was tested as per PNEN 1366 22015 (Fire resistance tests for service installations — Part 2 Fire dampers). The entire manufacturing process meets the requirements of EN 156502010. The FDA212 fire dampers can be installed in horizontal and vertical fire partitions to provide fire resistance of EI 120 (ve ho i↔o) S (which may depend on the actual fire resistance of the partition). The fire dampers are available in the nominal diameter sizes DN200, DN224, DN250, DN280, DN300, DN315, DN355, DN400, DN450, DN500, DN560, DN600, DN630.

Round spiral ducts are available in diameters from 80 mm to 1600 mm. The ducts are available as made of 0.4 mm to 1.8 mm thick metal sheet; the ducts in diameters of DN 160 mm or greater are also available with corrugation for improved stiffness and vacuum strength. The corrugations are available as a standard feature for diameters of DN 250 mm to DN 1600 mm. All spiral ducts made from galvanized steel sheet, stainless steel sheet or aluminium sheet meet requirements of air tightness class D according to EN 12237.

The FDA212 square fire dampers are designed for use in general ventilation systems to seal off smoke and fire between adjacent fire partitions. The fire dampers are classified according to EN 135013+A12010P (Fire classification of construction products and building elements). The fire resistance was tested as per PNEN 1366 22015 (Fire resistance tests for service installations — Part 2 Fire dampers). The entire manufacturing process meets the requirements of EN 156502010. The FDA212 fire dampers can be installed in horizontal and vertical fire partitions to provide fire resistance of EI 120 (ve ho i↔o) S (which may depend on the actual fire resistance of the partition). The fire dampers are available in the nominal sizes 160x160 – 1000x500 mm. All fire dampers have a torsion spring trip (in FDA212T) or a returnspring actuator coupled with a thermal trip (in FDA212M).

The FDA12 round fire dampers are designed for use in general ventilation systems to seal off smoke and fire between adjacent fire partitions. The fire dampers are classified according to EN 135013+A12010P (Fire classification f construction products and building elements). The fire resistance was tested as per PNEN 136622001P (Fire resistance tests for service installations Part 2 Fire dampers). The entire manufacturing process meets the requirements of EN 156502010. The FDA12 fire dampers can be installed in horizontal and vertical fire partitions to provide fire resistance of EI 120 (ve ho i↔o) S (which may depend on the actual fire resistance of the partition). The fire dampers are available in the nominal diameter sizes DN100, DN125, DN160, DN200, DN250, and DN315. All fire dampers have a pull spring control gear and a fusible thermal trip (in FDA12T) or a returnspring actuator coupled with a thermal trip (in FDA12M).

Plug ends are pressed with a male end on the duct side to blind it at air tightness class D. The plug end rim is long enough to easily secure it with WGO screws without any risk of cutting the gasket's double lip. CPSL plug ends are equipped with a stop fold which prevents inserting the fitting too deep into the duct. Safe edges (rolled edges) allow the duct installer safer installation of the ductwork, by minimizing the possibility of cuts.

SPRZSMO SMOKE system spiral circular duct, fire resistance classE600 120 (ho) S1500 single, designed for singlecompartment smoke extraction systems and combined (dualfunction) systems. Made of galvanized steel sheet DX51D+Z275 according to PNEN103462011, thickness 0.7mm for diameters from 100710mm, 0.9mm for diameters from 8001000mm. The maximum length of a straight duct is 6000mm. Spiral ducts meet the requirements of airtightness class D in accordance with PNEN 12237. In the whole range of diameters they are made as spiral lockseamed ducts made of 137mm wide sheet metal sheet, additionally, from the diameter of 250 to 1000mm, they are corrugated;

The fire dampers are manufactured in the following nominal sizes DN100, DN125, DN160, DN200. The fire dampers are equipped with a thermal fuse mechanism ensuring the damper switch to the safe position in case of reaching an ambient temperature equal to or higher than 72°C. The fire dampers allow using limit switches signalling closed position of the damper blade (1 limit switch) or blades (in case of using 2 limit switches). The casing is made from galvanised steel sheet; the fire damper blade is made from a silicate cement board.

HRUWALL is a singleroom decentralized heat recovery unit for concealed installation. The unit comes with a ceramic heat exchanger which boasts a maximum heat recovery ratio of 90% (the nominal heat recovery ratio is η=74.3% as per EN 1314182011). The energyefficient EC fan changes the running direction every 70 seconds to alternate between air supply and air exhaust. Low energy consumption and extremely low operating noise make this heat recovery unit a recommended solution for nonstop operation. The heat recovery unit has three speed levels to choose from, depending on the size of the area and indoor demands. HRUWALL10025 provides a sufficient air change level in areas up to 19m2. HRUWALL15060 provides a sufficient air change level in areas up to 45m2. We recommend installing the devices in pairs.

Round spiral ducts are available in diameters from 80 mm to 1600 mm. The ducts are available as made of 0.4 mm to 1.8 mm thick metal sheet; the ducts in diameters of DN 160 mm or greater are also available with corrugation for improved stiffness and vacuum strength. The corrugations are available as a standard feature for diameters of DN 250 mm to DN 1600 mm. All spiral ducts made from galvanized steel sheet, stainless steel sheet or aluminium sheet meet requirements of air tightness class D according to EN 12237.

HRUWALLWI model ductless heat recovery unit comes equipped with a WiFi module. Its basic parameters, including max. heat recovery 82%, airflow rate 60 m3/h, and low sound power level 38 dB (A), are identical to those of the HRUWALL units. Methods for pairing devices and controlling them are different. With the addition of a WiFi module, the device can be connected to a local wireless network and controlled via a mobile app. Moreover, the app allows the pairing of devices by assigning two or more heat recovery units to a group. It is possible to have many groups so that 1 application can serve all HRV units in a building. A temperature sensor and relative humidity sensor are built into the HRUWALLWI, and the app displays their values.