Heat recovery unit WHR 950

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1 Important features Counterflow exchanger 95% thermal yield DC motors 50% saving on energy consumption Air supply and exhaust individually adjustable via display Intelligent adjustment Available with 100% bypass for free cooling Unique freeze protection High air output of 450 m³/h at 240 Pa, and is therefore extremely suitable for larger residences. For cooling purposes, the can be extended with the Comfortunit Artic 950 General This heat recovery unit is intended for application in larger residential balanced ventilation systems. In these systems, used air is extracted from kitchens, toilets and shower rooms and fresh outdoor air is fed to living areas and bedrooms. Due to the high air output, 450 m³/h at 240 Pa, the is also suitable for small non-residential applications. Casing The casing is constructed of high quality coated aluminium and plating. The front is made of a recyclable plastic (RAL 7037). The WHR is fitted on top with four air connections Ø 180 mm. A plastic condensation drain, with a 1¼ inch connection, has been fitted in order to drain any condensation which might form in the unit and in the external air outlet. This plug is fitted as standard with a connection pipe of Ø 32 mm. In order to prevent condensation, it is important to insulate the exhaust ducts and outdoor air ducts against water vapour. Fans The WHR has low-energy DC motors with an HY impeller. This leads to total energy savings of 50 to 60% compared to AC motors. Filters At the front side of the WHR there are 2 G3 filters which can easily be removed and reinstalled without tools. Heat exchanger The high-quality plastic counterflow exchanger has a thermal yield of 95%. Reheating of the supply air is no longer necessary. Frost protection Frost protection is fitted to prevent freezing of the counterflow exchanger. If necessary, the frost protection unit reduces the intake fan's speed in order to increase the exhaust air's temperature and thus prevent freezing. The imbalance in air supply and exhaust is barely noticeable and is preferable to continually having to switch off the air supply. Display The WHR has a display with touch controls which allows for easy adjustment of settings (speed/ capacity etc.) and easy reading of data. Regulation The 3 speeds can be variably set to the most economical speed. Both the 3-position switch SA 1-3V or the switch on the extractor hood can be used to switch between high, medium or low. Using a RBO (receiver) and one or more RBZs (transmitters), the unit can be remotely (radio control) adjusted between the three positions from one or more locations. Air direction/connection L = Residential Connection Left (condensation removal right) R = Residential Connection Right (condensation removal left) 1

2 Electrical connection The WHR is fitted with a 5-core cable and Perilex plug as standard, for connection to a single-phase 230 V, 50 Hz supply as commonly used in domestic ventilation. Length of free cable is 1.5 metres. dwelling [left] roof dwelling [right] roof Extractor hood It is not possible to connect a powered extractor hood to the WHR system. The solution is the ExSense hybrid chimney. This modern stainless-steel chimney combines central extraction and recirculation. Selecting the chimney with connection box offers even greater ease of operation, as the WHR system automatically switches to its highest setting as soon as ExSense is in use. Note: Never connect a powered extractor hood to the system. Options Bypass The is available with a 100% bypass. When engaged, exhaust air is diverted around the exchanger. This allows for the use of night air to ventilate the house in the summer, so-called free cooling. The bypass is automatically regulated according to the set comfort temperature. Base The can be mounted on the wall or be fitted free-standing. A special base is available for this purpose Software for adjustment with laptop Software that can be installed on a laptop has been developed for the. Adjustment can now be carried out using a laptop. Pulse switch The WHR can be set to 'high' for a certain length of time by the inclusion of a pulse switch in the bathroom. The duration can be set in menu P2 on the display. The bathroom switch is connected to the WHR via a 2-core low-voltage cable. Comfortunit Artic 950 The Comfortunit Artic 950 contains a heat pump which vastly improves living comfort during warm weather. The unit is mounted on top of the and ensures cooling and dehumidifying of supply air during warm weather. 2

3 Dimensions : * Internal. **Condensation drain. 3

4 Position Setting Capacity Pressure Consumption Current Cos Noise level Weight percentage Qv Pst power current exhaust Supply Hor. % m³/h Pa Wel A (-) db(a) db(a) kg (1) Low (2) (3) Medium (4) (5) (6) (7) High (8) Maximum Pa m³/h l/s 4

5 sound Fan sound capacity db ref. 10 ¹² W Type Level 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz

6 Accessories and controls For accessories and controls, please refer to the relevant chapters. A summary is given below. Accessoires Pagina Ventilation valves for air supply (STH) 505 Ventilation valves for air exhaust (STB / overspraakdemper SGD) 509 Ventilation valves for air exhaust (STC / overspraakdemper SGD) 513 Ventilation valves for air exhaust (STK) 515 Ventilation valves for air exhaust (STV) 519 Kitchen box (SKB) 523 Noise-proofing hose (SFD) 523 Non-return damper (RSK 180) 523 Non-powered extractor hood (WK) 525 Hybrid 'chimney' (ExSense) 527 Regelapparatuur Pagina Radio control (RBO/RBZ) 465 Position switch (SA 1-3V, SA 0-3V, pulsschakelaar) 467 6

7 703 Perilex 7

8 8