Ventilation - Import export

The HRUSlimAIR heat recovery unit is designed for residential buildings. The HRU has a capacity of 250 m3/h @ 100 Pa, generated by energyefficient EC fans. Thanks to a counterflow heat exchanger made of a plastic (PET), it achieves up to 90% heat recovery An ERV version with an enthalpy exchanger that recovers moisture is also available. Builtin electric preheater protects heat exchanger against freezing, wireless radio communication connects controllers and sensors, and all of it is enclosed inside a selfsupporting, insulating EPP casing. HRUSlimAIR can be installed in up to 3 positions, thanks to a special condensate drain system.

The insulated manifold box is used for mechanical ventilation systems with heat recovery (MVHR). MVHR manifolds do not need to be insulated onsite thanks to the insulating properties of EPP. Manifold boxes are designed for distribution of 75mm semi-rigid ducting around. The number of connectors varies depending on the user's specifications: 6-13 connection spigots.

HRUWALLRC is a bidirectional ventilation unit, often described as decentralized or pushpull, with regenerative ceramic heat exchanger. It is intended for single room installation, usually installed in synchronised pairs. The heat exchanger material together with its unique honeycomb structure gives a maximal 82% thermal efficiency ratio (74% acc. to 1254/2014 EU Directive reference measuring point). The operating principle is analogous to HRUWALL unit is working in alternating flow mode, switches the air flow directions every 40120 seconds (pushpull) and it’s equipped with energy efficient EC fan (maximum power consumption is only 6 W for HRUWALLRC15060). The unit casing is made of ABS plastic. A remote controller with LCD display is included in the set. We recommend installing the devices in pairs

The IPR access door features a CR EPDM gasket and it is designed for installation on round duct walls. The design of the IPR access door and its gasket profile provide a perfect seal around the duct opening. This ensures a high air tightness class. The product provides a very simple, lowcost and extremely effective solution for closing and sealing access openings in the ductwork. The openings made in the ductwork for access doors must be sized to meet the requirements of EN 12097. Another determinant of the access opening size is how the interior is cleaned. Some cleaning processes and tools require access doors as large as 800x400 mm. The access door is installed in the opening made using the cutting template supplied with the product.

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.

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.

Ventilation bends 45˚ made from expanded polypropylene (EPP). Bends are produced in diameters 125, 160 and 200 mm. The standard wall thickness is 15 mm. Each bend has a malefemale coupling, the connection method eliminates thermal bridges. Two 45˚ bends connect easily into one 90˚ Thermal conductivity 0.039 W / m*K Airtightness class ATC2 (old D) @ 90Pa acc. to PNEN 17192201901

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

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

Round ventilation duct made of expanded polypropylene (EPP). The most important features of the product are rigid construction, low weight, easy assembly (integrated malefemale coupling) 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. Lenght EPP ducts 1 m sections Diameters 125, 160 and 200 mm. Wall thickness 15 mm Thermal conductivity 0.039 W / m*K Airtightness class ATC2 (old D) @ 90Pa acc. to PNEN 17192201901

Heat recovery ventilation unit HRUPremAIR is a modern device with 350 / 450 or 500 m3/h air flow @ 100 Pa. Unit is made from cutting edge materials aluminim heat exchanger and EPP selfsupporting casing. Depending on the model, following heat exchangers are used counterflow aluminium heat exchanger (HRV) or counterflow enthalpy exchanger (ERV). Enthalpy exchangers in HRUPremAIRE series have a polymer membrane that effectively recovers heat and moisture from the extract air. Such membrane works like a membrane in waterproof trekking clothing i.e. it allows water vapour to pass through, but not liquid water and air. The enthalpy exchanger also blocks the transfer of odours, bacteria and spores. The exchanger material, is needless to say, primarily optimized for maximum heat recovery efficiency. PremAIR air handling units optionally can be equipped with the Constant Flow system, whose task is to maintain a constant air flow in the installation.

The heat recovery ventilation unit HRU-PremAIR has an air flow capacity of 350 m3/h at 100 PA. Designed to use aluminum heat exchangers and EPP self-supporting casing. Heat exchangers that are used depend on the model, such as counterflow aluminium heat exchanger (HRV) or counterflow enthalpy exchanger (ERV).

The FLX-PLO-EPP-F plenum boxes are part of the FLX-REKU air distribution system designed for domestic mechanical ventilation systems, so-called the MVHR system, to which an air valve and FLX-HDPE / FLX-HDPE-A ducts with a diameter of Ø75 are mounted.

EPP manifold boxes are used for heat recovery ventilation (MVHR). Due to EPP's insulating properties, MVHR manifolds do not need to be insulated. Manifold boxes are intended to distribute 75mm ducting around the house. The number of connectors varies based on the specifications of the user: 4-18 spigots.

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.

Industrial Fans - Comprehensive production

Base Group specializes in the manufacturing of products for heating, ventilation and air conditioning (HVAC). We have been providing services in the heating, ventilation and air-conditioning sector for many years. We are manufacturer of heating structures, ventilation structures and air conditioning industry structures upon the earlier consultation with customers concerning their requirements.

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

High-quality MODERN fireplace/ventilation grilles MODERN fireplace grates are made of steel elements properly prepared in the technological process. They have very good mechanical properties, as well as high color stability and thermal resistance. Installation is carried out using the mounting frame attached to the grille. Modern fireplace grates are also used as the end of hot air distribution ducts from the fireplace . The shutter allows you to adjust the air flow through the grille by opening and closing. These grilles can also be used in ventilation installations / risers, they are ideal as an aesthetic finish of chimney ventilation openings in the room.