Vertical in Block Work/ Masonry Wall HEVAC/ HVCA Installation Frame

Damper Installation Method

  1. Measure the positions of the building ties on the HEVAC frame.
  2. Mark up the lintel at the top of the hole in the wall to give positions that match to the building ties. Drill into the lintel and fit stud anchors or similar steel fixings (min ø6.5mm x 60mm).
  3. Turn out the building ties on the damper and offer the damper into position, supporting from underneath with a block of wood or board, which will need to be removed when the mortar is in position. If 4 hour Integrity is required (E240) pockets in the wall will be required and wall ties turned out into them.
  4. Using a steel wire, wrap this round the building ties and the stud anchors in the lintel at the top, to hold the damper in position (Note: This will also maintain the quality of the link between the damper, the infill mortar and the wall should a fire occur).
  5. Add mortar from both sides of the damper and infill to the HEVAC frame. Take care not to infill past the line on the interface shroud.

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 (as good practice, this should be towards the top of 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 maintaince.


  1. The manually resettable fire damper should be carefully inspected, cleaned and lubricated with light oil, if required, released and reset.
  2. The motorised fire 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.

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