Horizontal in Floor Slab HEVAC/HVCA Installation Frame (IF)

Damper Installation Method

  1. Measure the positions of the building ties on the HEVAC frame.
  2. Mark up the inside edges of the hole in the slab to give positions that match to the building ties. Drill into the floor slab and fit stud anchors (or similar) leaving them protruding into the opening.
  3. Turn out the building ties on the damper offer the damper into position.
  4. Using steel wire (min ø1.5mm) wrap this round the building ties and the stud anchors to hold the damper in position (Note: This will also maintain the quality of the link between the damper, the infill mortar and the floor slab should a fire occur).
  5. Shutter beneath the damper (if required) and add mortar from the top of the slab and infill to the HEVAC frame. Take care not to infill past the line on the interface shroud if the motor is to be fitted above the slab.
  6. When the mortar is firm remove the shuttering (if applied) and infill with more mortar to the HEVAC frame from below the slab. Do not infill past the line on the interface shroud if the motor is to be fitted below the slab.

Actuator Fitting (If required)

  1. The control mode/actuator should then be fitted using the instructions supplied with it.
  2. Using the supplied drilling template, drill into the ductwork and fit the Electrical Thermal Release (ETR) into the duct.
  3. A special feature of the actionair SmokeShield modes is that they may be adjusted from pointing straight out along the duct (standard configuration) through 90° to point either up or down if required.
  4. The mode should be wired into the system using the site wiring detail, plus the details shown on the label. Note: If the mode/actuator fitting instructions are missing, please contact the actionair sales office.


The procedure detailed under periodic maintenance should be followed.

Periodic maintenance

See 'periodic maintenance'.


  1. The manually resettable fire damper should be carefully inspected, cleaned and lubricated with light oil, if required, released and reset.
  2. The motorised fie damper control mode should be operated to ensure that it is moving the blades from open to close and vice versa.
  3. If the end switches (in the control mode) are being used, it must be checked at commissioning stage  that they are actually indicating that the blades are open or closed. If using an automatic control system this can be achieved by running a test cycle and checking the blades (open and closed) and the status indication at  the control system.

Installation Details (Click to enlarge).

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