Aircommand Sparrow Mk4 Guida di Installazione Scaricare il pdf (Pagina 9)

Sparrow Mk4 Installation Guide 20

Dec 2012 Page 9 of 14

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

(mm)

Comment

Duct length (mm)

Bolt length

Absolute minimum – ring must be

removed from top of plenum ducting.

Standard

Use plenum duct as provided

Standard

“

Standard

“

Standard

“

Standard

“

120

Limit of std bolt

115

Absolute maximum

150

Installer to provide

General rule

Roof less than 30mm – remove duct

ring. 30mm or thicker leave duct as

supplied

Duct length = Roof

thickness + 35mm

Roof greater than 85mm

thick will 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.

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 9: Insert the four M8 bolts and hold down bars into the corners of the brace

Fig 10: Fit the black plastic duct onto the brace assembly ensuring a tight, sealed fit

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Aircommand Sparrow Mk4 Guida di Installazione Pagina 9

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