Siemens FDA241 Mounting & Installation

Also see for FDA221: Technical manual Planning, Mounting Manual Manual Planning, Mounting

Mounting 3Connecting the pipe system to the aspirating smoke detector3.3.1 Return lineIf there is an air pressure difference of >45 Pa between the monitored area and theaspirating fire detector, a return line is required.NOTICEConnection between aspirating smoke detector and return lineDamage to the return line and/or the aspirating smoke detector● Do not glue the return line to the aspirating smoke detector! If the return linehas to be separated from the aspirating smoke detector for maintenance workor repairs, the return line or the aspirating smoke detector may be damaged.Press the return line securely into the air outlet on the aspirating smokedetector.You will find more information in document A6V10334435.See also Applicable documents [➙ 5]19Building Technologies A6V10345654_h_en_--Fire Safety 2015-05-29firealarmresources.com