Aircommand 5860001, Manual Manual

Page: 7 / 16

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6. Assess Roof Thickness
• Measure the roof thickness and consult the table across to
check if adjustments to the duct length are required.
• NOTE: If the duct length needs to be adjusted then cut the
excess from the un-notched end.
Roof thickness Comment Duct length Bolt length
(mm) (mm)
25 Absolute minimum – ring must be 60 Standard
removed from top of plenum ducting.
30 Use plenum duct as provided 65 Standard
40 “ 75 Standard
50 “ 85 Standard
60 “ 95 Standard
85 “ 120 Limit of std bolt
115 Absolute maximum 150 Installer to provide
General Roof less than 30mm – remove duct ring. Duct length = Roof greater than 85mm thick will
rule 30mm or thicker leave duct as supplied Roof thi 35mm require installer to provide longer bolts
7. Assemble Duct
• Thread a hold down bar onto the M8
bolt and push the bolt almost all the
way into the hole in each corner of
the brace (Fig 9).
• Leave a 10mm gap between the
hold down bar and the recess in the
plastic brace. This will allow for
easier engagement with the four
corresponding threaded holes in the
unit.
• Turn the assembly over and add the
black plastic duct work to the top of
the assembly with the notch
upwards (Fig 10). The notch is shown
circled below.
• Align the notch with the inside fans
power cable.
Note: Some installers fi nd it easier to
attach the duct to the roof top unit fi rst
and then insert the brace assembly.
When attaching the duct to the
unit take care to ensure it forms a
tight, unbroken seal that doesn’t allow
cold air to escape.
Fig 10: Fit the black plastic duct onto the brace assembly ensuring a tight, sealed fi t.
Fig 9: Insert the four M8 bolts and hold down bars into the corners of the brace.