Mechanical ventilation systems are becoming much more widespread than natural ventilation systems. Changes in regulations which now require to install recuperator units in houses after 2013 have strengthened this trend. To ensure optimum room air conditioning, it is necessary to control and adjust the air flow within the ventilation system.
Air flow regulators are used to automatically adjust the air flow in a ventilation system. They allow to alter the air output to set the optimum air conditioning for each room within a building.
The cheapest solution which guarantees proper adjustment and balancing in the ventilation system are the CFR-PVC regulators.
CFR-PVC regulators are automated units which guarantee constant air flow volume. The damper is fully opened at the low nominal pressure value. Further increase in pressure value causes the damper to close gradually so that the air flow volume at the regulator remains constant.
The use of CFR-PVC regulators eliminates the need to make measurements and adjustments to the installation before first run. CFR-PVC regulators ensure constant air flow in ventilation systems. They are made of PCV plastic, equivalent to class A1 (DIN 4102). CFR-PVC-HP regulators are used in systems with higher overall pressure.
CFR-PVC regulator features:
CFR-PVC regulators can be used both in intake and outtake installations, both in vertical and horizontal system arrangements.
Installing the regulator entails inserting the device according with the indicated air flow direction into the duct with diameter matching the regulator size. Rubber washer guarantees proper insulation.
Illus. no. 3 Installing the regulator in round ducts
To ensure proper operation of the regulator, it is recommended to observe the following principles during installation:
To facilitate easy installation of regulators and measuring instruments, Alnor product offer has ventilation ducts fitted with a hinge-mounted inspection hatch. Due to the universal latch, it is possible to open and close the hatch multiple times, allowing full access to the duct. The ducts are fitted with two-lip EPDB rubber washers.