Installation Of Main Body; Connection Of Duct - LG LZ-H025GBA4 Installation Manual

Installation of main body

Assembly of washer, nut
Tighten the common washer and nut (more than 21 mm
for the outside diameter of M10, to the commercial ceiling
fixing bolt (M10) as shown in the right figure.
• For the ceiling fixing bolt, perform work less than 50 mm
under the ceiling fixing bracket.

Connection of duct

After securely connect the duct with the duct
connection flange, wrap it with a commercial
aluminium tape so that air cannot be leaked.
Adjust the duct from the ceiling so that no force is
applied to the main body of the ventilation
system.
Always use two ducts at the outdoor with the heat
insulating material for prevention of dewing.
CAUTION
!
• Check that there are no foreign materials (paper, vinyl, etc) or cutoff powders in the duct
before connecting the duct.
• Take care so that shock may not be applied to the damper plate within the main body when
performing the duct connection work.
• It is recommended to perform adiabatic treatment even to the duct pipe at the indoor side
where ambient temperature is expected higher than room temperature when the main body of
the ventilation system for cooling in summer.
• Take care so that work may not be performed as in the left figure. Otherwise, it may cause
reduction of air volume or abnormal noise.
Heat insulating material
Aluminium
Duct to OA
Duct connection flange
Main body
Installation
Ceiling fixing bolt
(M10)
Nut
Spring washer
Washer
Nut
Duct
Taping
Installation manual 13