Product description

The Vent Axia Lo-Carbon NBR dMEV 125mm Humidistat & Timer is a continuous running, constant volume fan has a switched live (LS) and innovative digital display with a harmonised control platform. Quiet running and with high pressure development, the dMEV is best in class. The unique patented display provides the calibrated installed airflow and pressure meaning that there is no need to test the installation with an airflow measuring device. The constant volume technology automatically adjusts the speed of the fan to ensure the desired airflow is delivered. A silent high pressure axial impeller means Lo-Carbon dMEV can meet the requirements of many domestic installations without the need to use a traditional centrifugal fan. A brand new control platform also provides fully adjustable airflow in 1l/s increments, meaning whole house rates can be achieved easily using fewer fans than is currently possible with any other dMEV product on the market.

The new 125mm dMEV fan will further improve Dwelling Emission Rates (DER) by improving efficiency and lowering noise. The larger 125mm spigot also means there are almost no restrictions in terms of duct lengths and bends used in the system, when compared to a traditional 100mm axial fan. This means fewer fans are required to achieve whole house ventilation rates.

The 125mm DMEV should have variable speed settings of 9-30 l/s on trickle and 10-35 l/s on boost, achieving a minimum noise level of 12.9 dB(A) at 3 metres. All units shall be independently 3rd party tested at the Sound Research Laboratory (SRL), tested to BS EN 13141-6. The unit shall comprise a single high efficiency EC/DC motor to deliver specific fan powers as low as 0.12 w/l/s, as measured in accordance with the SAP PCDB test method and listed on the PCDB database. The controls for the DMEV unit shall provide fully adjustable, continuous trickle and boost speeds, with the airflow being controlled in 1 l/s increments. The boost speed shall be activated via a switch live input or integral humidistat.

The unit shall include an integral humidity sensor with ambient and rapid response capability, which increases fan speed in proportion to the level of humidity detected. The unit shall also automatically raise the humidity threshold set point as temperature decreases in order to prevent unnecessary boosting due to background humidity levels.

The unit shall be able to be commissioned as a continuous running or intermittent fan according to the Building Regulations compliant design.

Key features

• Digital controls with display
• Fully adjustable normal & boost airflow settings
• Suitable for kitchens, utilityrooms and bathrooms
• This 125mm model allow higher extraction rate at very low noise levels
• Recognised in SAP PCDB
• Constant volume which can be switch on or off
• Display showing airflow and system pressure
• IPX5 Rated
• Multi-orientation grille
• NHBC Approved
• Free delivery

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