VECTIOSPOWER TM PJ Compact air-air rooftop units Factory options and accessories (..continuation). nSmoke detecting sensor.Smoke detecting station in DIRECT METHOD: INDIRECT METHOD: accordance with the NF S 61-961 standard, 961, that uses Fresh air ratio by CO concentration 2 a LED to indicate the installation status, and if the probe Category IEQ person above outdoor CO2 detects the presence of smoke in the installation, it stops the concentration operation of the unit and gives the order to open or close the dm³/s by person ppm outdoor damper (configured byparameter). I: High level of To ensure compliance with the French regulations on Fire expectation 20 550 safety (ERP), it’s possible to configure the opening of the II: Medium level of 12,5 800 fresh air damper and the exhaust air damper to 100% (return expectation air damper closed). III: Moderate level of 8 1.350 expectation nAir quality sensor to enable measuring CO.2 IV: Low level of The are different options: expectation 5 1.350 re •Ambient air quality sensor. References: EN 16798-3:2017 and EN 16798-1:2019: Energy performance Return air quality sensor (duct- of buildings - Ventilation for buildings, replacing EN 13779:2007. • mounted) (attached picture). •Sensor installed on the master unit of the local network(pLAN). Free-cooling + outdoor humidity (Group 20) Double quality sensor: nFree-cooling management:Running the unit in free- • - two ambient air sensors; cooling mode allows it to make best use of outdoor air conditions when these are more favourable than the return - one ambient air sensor and one outdoor air sensor; air conditions. This allows the cooling capacity to be reduced. - one return air sensor (duct-mounted) and one outdoor The percentage of outdoor air can vary between 0% and air sensor. 100%. Advantages of installing two ambient air quality sensor: Thermal This installation is interesting in large premises, so that free-cooling ventilation can be done based on the maximum, minimum or average value measured by the two sensors. Advantages of installing an outdoor CO2 air quality sensor: This sensor gives the option to manage fresh air depending on real difference of CO concentration indoor and2 outdoor. It gives the chance to really answer to the request(1) of indirect method for ventilation,without need of estimating Dry temperature outdoor air quality, but measuring it. (1)Outdoor sensor will be supplied not mounted. It has to be located outdoor, but protected from rain and external agents. For any doubt, please ask. Enthalpic free-cooling Options recommended for fresh air management: Room Outdoor Recommendation Constant Applied to all Constant fresh air(fresh air % fixed occupation locations by regulation). No additional option required. Variable Locations where Variable fresh air (considering indoor occupationoutdoor CO is2 CO2 concentration): well known • Ambient air quality sensor • Return air quality sensor Dry temperature • Double ambient sensor (in large scale premises) Locations where Variable fresh air (considering indoor outdoor CO is2 and outdoor CO2 concentration): not well known • Double air quality sensor: ambient or variable and outdoor • Double air quality sensor: return Thermoenthalpic and outdoor free-cooling Methodologies fresh air ratio calculation: The categories of indoor air quality (IEQ) are defined in EN16798:1 based on the level of expectation that the occupants may have. A normal level would be a “medium” level. A higher level can be selected by occupants with special needs(c den, elderly, people with disabilities, etc). A lower level does not mean any risk for health, but it can affect to comfort level. Dry temperature CATALOGUE 2021 261 261 ytidimuh cicepSytidimuh cicepSytidimuh cicepS TheItf rrsmeaveeo-se c mnootohrleian elgn peicr gy