The control unit for the Sola-vent is housed in a specially moulded, integral sealed ABS housing in the ceiling void. This unit has a controller for the solar components, which directs power from the solar panel to the fan when in use, and charges the solar batteries when the Sola-vent is not in use. A controller regulates the battery charge, preventing over and under-charging of the unit to prolong battery life and function.
The ABS unit houses two fully sealed solar
batteries, which run at 12V. These batteries are designed to allow operation for up to 7 days without any charge from the solar panel.
The special low noise fan is mounted below the roof flashing, minimising fan noise and is IP55 rated. The high-efficiency DC motor has a very long life of 50000 hours, which is in excess of 55 years under normal usage of 21/2 hours per day.
A separate timer control is connected to the PIR unit to provide fully automatic operation of the extract fan. The timer control is configured to provide an overrun of 15 minutes as required by building regulations but is adjustable. All fittings within the ABS unit are pre-wired and installed with connectors to facilitate easy wiring to external components, simplifying installation. |