SEM-SAFE® high-pressure water mist nozzle installation kit 3. Nozzle installation directly in the ceiling or wall with “spider” weldment - by using cover plate, clamp disc and “spider” weldment This type of installation is intended for using with nozzles fitted to hoses as the final section in a piping system. The ceiling structure must be able to carry the nozzle load. 1 Cover plate 2 Ceiling 2 3 “Spider” weldment 4 Clamp disc 1 5 Bolts 3 4 5 Figure a. Nozzle is prepared for installation. Make a 65 mm hole in the ceiling. Reinforce ceiling if necessary. Figure b. Push the “spider” weldment over the nozzle, with the legs pointing towards the nozzle. 901-90-00029 5 © Copyright Danfoss Fire Safety A/S | 2020.03
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