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  3. LQVF Mixing section outdoor

FläktGroup LQVF Mixing section outdoor Installation guide

  • I have reviewed the installation instructions for the Fläkt Woods LQVF mixing section and LQAZ-11 damper actuator. This document provides details on connecting the mixing section to ductwork, installation of damper actuators, and critical commissioning steps, such as ensuring the intake damper is open. I'm ready to answer your questions regarding these devices.
  • How is the return air damper in LQVF connected to the duct?
    What sealing strip is required for duct connection?
    What is the maximum permissible pressure difference over the damper?
    What is the maximum torque for the damper actuator?
    What is the model name of damper actuator accessory?
Fläkt Woods 9139 GB 2011.10 1 Specifications are subject to alteration without notice
Installation instruction
Connection to duct
The return air damper in LQVF is connected to the
duct on the side (b = 1) or on the bottom (b = 2) using
the following accessories: fabric sleeve LQVZ-02,
transition piece LQVZ-03 and counterflange LQVZ-
04. Alternatively, an edged duct can be screwed
directly to the casing. Sealing strip LQAZ-10 is requi-
red in every case. Ensure that the ducts do not impose
a load on the casing.
Commissioning
Installation of damper actuators
Damper actuator LQAZ-11 (accessory) is installed in accor-
dance with the following installation.
Size 60 62 64 71 73 80 82 84
Torque, Nm
b = 1 15 + 12 2x12 + 13 2x14 + 14 2x15 + 14 2x15 + 15 2x14 + 15 2x16 + 16 2x18 + 18
b = 2 15 + 10 2x10 + 11 2x14 + 2x9 2x15 + 11 2x15 + 2x9 2x14 + 13 2x16 +2x10 2x18 + 2x11
Number of
damper motors
b = 1 2 3 3 3 3 3 3 3
b = 2 2 3 4 3 4 3 4 4
Mixing section, LQVF – outdoor execution
 IMPORTANT!
Ensure that the intake damper is open
during commissioning of the fan.
The maximum permissible pressure
difference over the damper = 1000 Pa.
Max. torque for damper actuator: 30 Nm.
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