CTM International RUCSSBG450 Manuel d'instruction - Page 5

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MOUNT HEIGHTS & CLEARANCE

Minimum mount height between range top to hood

bottom should be no less than 25"

Maximum mount height should be no higher than 30"

It is important to install the hood at the proper

mounting height. Hoods mounted too low could result

in heat damage and fire hazard; while hoods

mounted too high will be hard to reach and will loose

its performance and efficiency.

If available, also refer range manufacturer's height

clearance requirements and recommended hood

mounting height above range.

* Maximum ceiling clearance 106.5" at 27.5" hood

mounting height from stove (different models may

varies)

** For higher ceiling, extension of the chimney and

the decorative cover is available to purchase, if

require.

Ducting (not provided)

NEVER exhaust air or terminate duct work into spaces between walls, crawl spaces, ceiling, attics or

garages. All exhaust must be ducted to the outside. Use Metal ductwork only.

Fasten all connections with sheet metal screws and tape all joints with certified Silver Tape or Duct

Tape.

Duct Run Calculation:

Maximum run 6" or 3-1/4 x 10"

duct

Deduct:

each 90 Elbow used

each 45 Elbow used

each 6" to 3/14 x 10"

transition used

each 3/14 x 10" to 6"

transition used

Side Wall Cap w/ damper

Roof Cap

e.g. – 1 roof cap, 2x90 elbows, 1x45 elbow =

30' + 30' + 9'=69' used, 31' available for

straight duct runs.

DUCT SIZE

A minimum of 6" round duct must be used to

maintain maximum airflow efficiency.

100FT

Flexible ducts are provided for convenience, always

use rigid type metal ducts if available to maximizing

airflow.

15FT

Also use calculation (on left) to compute total

available duct run when using elbows, transitions

9FT

and caps.

1FT

ALWAYS, when possible, reduce the number or

transitions and turns. If required a long duct

increase duct size from 6" to 7 or 8".

5FT

If a reducer is used, install a long reducer instead of

pancake reducer. Reduce duct size as far away

from opening as possible.

30FT

If turns or transitions are required: Install as far away

30FT

from opening and as far apart, between 2, as

possible.