MSD - multi smoke damper
Page 44
Version 2022-12-20
TPM 159/22
Electrical connection of the actuator in protection box
Protection box without slot or predrilled holes
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Drill two holes into the protection box (from outside to inside) and pull through field wiring cables (CAT 3 fire resistant
cables as BS 8519) to connect to the actuator trailing lead inside the housing, using a standard screwed cable connector
block, the protection box is made of calcium silicate plates.
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Procedure
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Use drill (drill size acc. To suit connecting cable Ø + 2 mm for seal up by mastic) and make two holes. It is possible to drill
holes in any side of the housing.
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Pull the heat resistant cable through the calcium silicate plate (wall) and connect with cables from actuator acc. to
above mentioned electrical diagram.
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Seal up the space around cable with fire resistant mastic (HILTI CFS-S ACR, PROMASTOP) or equivalent.
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Let the mastic harden.
Example of position of holes in the wall of the box, without pre-manufactured slot
example drilled
holes
