Marco A41MTU Installation Manual download pdf (Page 12)

INSTRUCTIONS

FOR

OFFSET

OF

CHIMNEY

USlNG

ELBOWS

TO

INSTALL

ELBOWS

1.

To

achieve

desired

offset, you

may

install combina-

tions

of

12",

18",

36"+

lengths

of

double

wall

pipe

(see

single

offset

chati

and

Figure

20A).

2.

Chimney weight above

offset

resls

on

return elbow.

Straps must

be

securely nailed

to

rafters or joists.

(See

Figure

20B).

3.

Maximum

length

of

pipe

between

supports

(return

elbow

or

chimney

pipe

support)

is

6'

of

angled

run.

Maximum

of

two

6'

angled

run

sections

per

chimney

system.

(Figure

20C).

4.

The

maximum

allowable offset

is

30'.

Elbows musl

be secured

to

the

pipe

utilizing

a

minimum

of

three

screws per joint. Fasten

screw

through

outer pipe slot.

Drill

118"

pilot

hole

or

use

self-drilling screws provided.

FIGURE

208

CHIMNEY DETAIL

A

PIPE

DETAIL

B

FIGURE

20C

OFFSET

ELBOW

RETURN

ELBOW

OFFSET

OFFSET

ELBOW

CHIMNEY

I

TYPICAL

OFFSET

INSTALLATION

I

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