The Airtech ACR60 and ACR60LV are continuously running extract fans designed for use in kitchens, utility rooms, bathrooms, and toilets. These fans are engineered to maintain good indoor air quality by continuously removing stale, humid, and odor-laden air from these spaces. The "continuous running" aspect means they operate constantly at a low trickle speed, providing constant ventilation, and then boost to a higher speed when increased ventilation is needed, such as during cooking or showering.
A key feature of the ACR60/ACR60LV is its integrated LED display, which serves multiple purposes. During installation, it allows the installer to configure the fan's settings to suit the specific requirements of its environment. This includes selecting the installation type (kitchen or bathroom, ducted or wall/window), setting the boost time, and adjusting the humidity level trigger. After setup, the display functions as a data logger, providing valuable information such as total run time, trickle speed run time, boosted run time, humidity-boosted run time, total energy used, and energy consumption over the last 24 hours. This data logging capability helps users monitor the fan's performance and energy efficiency over time.
The fan offers flexible installation options, including panel/ceiling/interior wall mounting, exterior wall mounting, and window mounting (with a specific kit). For panel/ceiling/interior wall mounting, a 105mm diameter hole is required. The grille is removed, the fan is screwed into position, and ducting is attached as needed. For exterior wall mounting, a 117mm diameter hole is cut, a wall sleeve is inserted and sloped slightly downwards away from the fan, and an exterior grille with downward-positioned louvres is fixed. In both cases, the fan's impeller rotation should be checked for freedom from obstruction after installation.
The ACR60LV model includes a transformer for SELV (Safety Extra-Low Voltage) operation, which must be surface-mounted to allow air to freely circulate and should not be enclosed or covered with insulation if installed in a loft void. The transformer should also be sited away from direct sources of water spray and heat, and out of reach (1.5m) of a person using a fixed bath or shower. The fan itself is a Class II double-insulated product and does not require earthing.
Wiring must always comply with current I.E.E. Regulations or relevant country standards and be carried out by a suitably qualified person. A local isolator switch capable of disconnecting all poles with at least 3mm contact separation is required. It's crucial to ensure the mains supply (voltage, frequency, and phase) matches the rating label. The fan is designed for use with fixed wiring and only in conjunction with appropriate Airtech products. When the fan is used in a room with a fuel-burning appliance, adequate air replacement must be ensured for both the fan and the appliance. The fan should not be exposed to direct water spray for prolonged periods. For ducted installations handling moisture-laden air, a condensation trap should be fitted, and horizontal ducts should slope slightly downwards away from the fan to prevent water dripping.
The commissioning menu, accessed by removing the grille (which automatically stops the impeller), allows for detailed configuration. Three buttons below the LED display control the setup: '+' to increase a setting's value, '–' to reduce it, and 'X' (Mode) to move to the next setting. The display rotation can be adjusted for optimal viewing.
Installation selection allows choosing between kitchen or bathroom mode, and ducted or wall/window kit mode. Kitchen mode typically has higher boost speeds. Selecting ducted mode compensates for reduced airflow in systems with higher duct pressure. The boost time can be adjusted from 1 to 30 minutes, with a default of 15 minutes. The humidity level trigger, which determines at what relative humidity the fan will activate its boost function, is adjustable from 50% to 70% relative humidity (rH), with a default of 60% rH.
A "Comfort mode" feature modifies how the fan boosts in response to an LS (Live Switched) input. In normal operation, the fan boosts immediately upon LS detection and overruns for the set period after LS disconnection. In comfort mode, the fan waits for the LS to be on for 5 minutes before boosting, which helps prevent nuisance noise from short-term humidity spikes. If the LS is switched off before 5 minutes, the fan will not boost. This mode does not affect pullcord operation, which will always activate boost instantly.
The pullcord function provides manual control over the boost settings. A first pull activates Boost 1, a second pull activates Boost 2, and a third pull cancels the boost, returning the fan to trickle speed. The pullcord can also be used to cancel an LS-activated boost; a first pull will enter boost, and a further pull will return the fan to trickle.
Maintenance is straightforward. At appropriate intervals, the fan should be inspected and cleaned to prevent dirt or other deposits from building up. The inlets and front face can be wiped with a damp cloth. The fan features sealed-for-life bearings, eliminating the need for lubrication.
Troubleshooting guidance is provided for common issues. If the fan continuously runs in boost, it could be due to a damp or recently redecorated room (which may take up to 2 weeks to stabilize) or a humidity set point that is too low. The solution involves allowing the room to dry out or adjusting the humidity set point to a higher value. If the fan does not boost when humidity is high, the humidity set point might be too high, requiring adjustment to a lower setting. If water drips from the fan when installed in a ceiling, it's typically caused by condensation forming in the ducting. While the fan is designed to handle condensation, fitting a condensation trap immediately after the fan can help prevent water from dripping into the room.
The data logger menu, accessible by holding the Mode button for 5 seconds after removing the grille, provides detailed operational statistics. This includes total run time (in years and days), trickle speed run time, boosted run time, humidity-boosted run time, total energy used (in KWh), and energy used in the last 24 hours (in Wh). This comprehensive data allows users to understand the fan's usage patterns and energy consumption.