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NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

7

Offset Elbow Assembly

Offset elbows install the same as chimney 

sections. First, snap the inner section INTO the 

preceding inner section of flue. Check connec-

tion by pulling up slightly to ensure a tight fit. 

Next, the outer sections snap lock OVER the 

preceding outer section of chimney. Again, 

check outer section by pulling up slightly to 

ensure proper connection is made.

Return Elbow Assembly

Return elbows install the same way as round 

terminations and stabilizers:

Step 1.

 Hold return elbow over top of last 

chimney section.

Step 2.

  Center inner slip section into inner flue 

pipe-slip down.

Step 3.

  Center outer-locking section over outer 

chimney pipe. Push down until locking 

joint has firmly engaged.

Step 4.

  Pull up slightly on return elbow to ensure 

locking joint has firmly engaged.

Step 5.

 Secure support straps to framing 

members by nailing under tension in 

sheer (

Figure 22

)

.

INSTALLING OFFSETS

First, review the Offset Elevation Chart and 

Figure 21

 for reference.

Step 1.

 Determine the offset distance where 

chimney is to pass through the first 

ceiling-dimension “A.” To find this 

point on your ceiling, first determine 

the center point for a vertical chimney 

following the instructions for vertical 

installation.

 

Measure height to the ceiling from the 

top of fireplace-dimension “B.” Use 

the appropriate Offset Elevation Chart 

to find dimension “A.” Mark point 

where you will drive your nail to show 

the center point for your offset ceiling 

cut.

Step 2.

 Proceed by using the Straight Up In-

stallation Instructions for cutting and 

framing ceiling and roof openings.

Note:

 See Framing and Dimension Chart for 

the sizes of the ceiling and roof openings. The 

size of the roof opening varies with the degree 

of pitch of the roof.

Notes: 

•   The  return  elbow  assembly  performs  the 

same function as a stabilizer. Consider this 

when determining the need for a stabilizer.

•   Do  not  apply  excessive  pressure  to  any 

subsequent chimney section following return 

elbow assembly when installing. Ensure that 

each subsequent chimney section is securely 

attached by testing as noted above.

Underside Of Chimney

Figure 20

Figure 21

Chimney Section (S)

FTF8-E30 Return Elbow*

FTF8-30 Offset Elbow*

B

A

*Part of Offset/Return Package Model FTF8-ES30

Figure 22

Return

Elbow

NOTES

Содержание MHW36CB

Страница 1: ...framing dimensions at Ceilings and Roofs Figure 4 Nail permanently using at least two 2 more fasteners after chimney sections have been assembledthroughthethimble firestopspacer combination and after...

Страница 2: ...ceed 30 Chimney heights above 30 must be sup ported by a Model FTF8 S4 stabilizer installed at 30 intervals Note The Model FTF8 S4 adds 3 net effective height to the total chimney system Install the M...

Страница 3: ...on can take place Step 9 FTF locking bands Model FLB may be required if the chimney extends too high above theroofflashing Asageneralrule ifthechimney extendsmorethan6 abovetheroofflashing the use of...

Страница 4: ...pipe exceed10 betweenelbows achimneystabilizer must be used at the midpoint see Figure 17 The stabilizer support straps must be attached under tension in shear to structural framing members above Whe...

Страница 5: ...38 7 3 4 1 0 0 1 9 1 11 78 465 1 2 38 9 1 2 0 0 0 0 10 1 11 82 469 3 4 39 1 3 4 0 1 0 1 9 1 11 93 475 3 4 39 7 3 4 1 0 0 0 10 1 12 08 481 3 4 40 1 3 4 0 1 0 0 10 1 12 24 486 40 6 1 0 1 1 9 1 12 34 He...

Страница 6: ...0 0 0 72 1 47 29 59 0 1 0 1 0 0 74 1 51 31 63 0 2 1 0 0 0 80 1 60 32 64 0 0 1 1 0 0 82 1 64 33 66 2 1 1 0 0 0 85 1 70 35 69 0 1 0 0 1 0 90 1 77 36 72 2 0 2 0 0 0 93 1 83 38 75 0 0 0 2 0 0 97 1 91 40...

Страница 7: ...stance where chimney is to pass through the first ceiling dimension A To find this point on your ceiling first determine the center point for a vertical chimney following the instructions for vertical...

Страница 8: ...8FS 2 Firestop Spacer Flat 12 Pack 94L76 F8FS 12 Firestop Spacer 30 63L30 F8FS30 Firestop Spacer 30 63L32 F8FS30 2 Contemporary Termination Round 63L42 FTF8 CTD Contemporary Termination Round Black H2...

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