Chigo CSQ4-300R Manual page 33

CHIGO CAC FCU
(5) Slightly adjust the panel following the arrow direction (Fig 11④) to keep the center of the panel in line
with that of the ceiling opening. Check whether the hooks on four corners are put up.
(6) Continue to tighten evenly the bolts under the hooks till the thickness of the sponge between the main
unit and the panel is reduced to 4~6mm,and the edges of the panel are all contact well with the ceiling (See
Fig12)
● Improper tightness of bolts will cause failure shown in Fig 13;