Roof mounting

  1. Fit suitable insulation and sealing material on the contact surface to the DRD fan.
  2. Use suitable transport equipment (crane) to carefully lower DRD fan at the installation site. Observe safety instructions for transport. NOTICE: Ensure seal integrity with the flat roof/roof socket. Remove the transport equipment.
  3. Firmly screw fan’s metal base down onto flat roof/roof socket at the 4 holes (positions [X]) (tightening torque 20 Nm). Suitable mounting material is to be provided by the customer.

When using a duct shutter, ensure that the shutters are free to move (VKRI HV accessories for H/V variants), VKRI for HT variants).

With a free inlet on the intake side, fit an SGRI Maico protective grille (accessory) suitable for the nominal size as protection against accidental contact and intake.