Marco A41MTU Installation Manual download pdf (Page 8)

NOTE:

COMBUSTION AIR INLET

DUCTS

MUST

NOT

VENTILATED

CRAWL

TERMINATE

IN

AlTlC SPACE.

SPACE

INSTALLATION

COMBUSTION

llmTmk

AIR

INTAKE

I

INSTALLATION VENTlLATED CRAWL

FIGURE

8A

SPACE

INSTALLATION

(OPTIONAL)

I

OUTSIDE

WALL

INSTALLATION

STEP

1

:

A

4-112"

diameter opening will

be

required for

installation

of

the air inlet assembly. Cut hole where

no

obstructions

are

expected, Install

the

air

inlet assembly

through

floor

opening. Secure assembly

to

floor. Slip

flexible

duct

onto

air

inlet assembly collar. Secure

flexible duct to collar with

a

hose

clamp.

(Figure

10).

STEP

I:

A

4-112"

diameter opening

will

be

required for

installation

of

the air inlet assembfy. Cut hole where

no

obstructions are

expected.

STEP

2:

Slip the

other

end

of

the air duct onto collar.

protruding

from

the

right side of

the

unit. Secure

duct

Install the

air

inlet eyebrow through

wall

opening.

with

screws

or

hose

clamp.

Secure eyebrow

to

exterior wall. Push flexible duct

onto

eyebrow collar until it secures

into

lances.

(Figure

9).

AIR

INLET

-

4"

AIR

DUCT

FUPPUED

BY

CUSTOMER)

STEP

2:

Slip

the

other end

of

the

air

duct

onto

collar,

When

the

air

duct

is connected

to

the unit

remove

protruding

from

the

right

side

of the

unit.

Secure

duct

security bracket

preventing

outside

air

damper

rcd

to

with screws or

hose

clamp.

rotate,

as

shown

in Figure

11.

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