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ASSEMBLING AND INSTALLING YOUR DOUBLE 
WALL CHIMNEY SYSTEM 
 

Each double wall chimney section consists of a galvanized 
outer pipe, a stainless steel inner flue pipe and a wire spacer. 
The pipe sections must be assembled as the chimney is 
installed. When starting chimney directly to the fireplace, the 
inner flue pipe section must be installed first with the lanced 
side up. The outer pipe section can then be installed over the 
flue pipe section with the hemmed end up (see fig.4). 
Press down on each pipe section until the lances securely 
engage the hem on the fireplace starter. The wire will assure 
the proper spacing between the inner and outer pipe sections. 
 

 

WARNING: THE OPENING IN THE COLLAR 
AROUND THE CHIMNEY AT THE TOP OF THE 
FIREPLACE MUST NOT BE OBSTRUCTED. NEVER 
USE BLOWN INSULATION TO FILL THE CHIMNEY 
ENCLOSURE (SEE FIG. 5). 
 

Continue to assemble chimney sections as outlined above, 
making sure that both the inner and outer pipe sections are 
locked together. 
When installing double wall “snap lock” chimney together, it 
is important to assure the joint between the chimney sections 
is locked.  Check by pulling chimney upward after locking.  
The chimney will not come apart if properly locked.  It is not 
necessary to add screws to keep the chimney together 
(exception – see page 5 figure 16). 
 

CHIMNEY PIPE: 
 

The FMI chimney system, consists of 12, 18, 24, 36 and 48 
inch snap-lock double wall pipe segments, planned for 
maximum adaptability to individual site requirements.  Actual 
length gained after fitting overlaps must be taken into 
consideration (lineal gain) are given in the following chart: 
 
 

 
 
 
 
 
 
 
 
 
 

 
 
Figure 1  

FRAMING DIMENSIONS 

 
 
 
 
 
 
 
 
 
 
 
 

Figure 2        FRAMING DIMENSIONS 

 
 
 
 
 
 
 
 
 
 
 
 
Figure 3

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
Figure 4 

 
 
 
 
 
 
 
 
 
 
 
 
 
 

Figure 5 

Содержание 36ECD

Страница 1: ...ional accessory items when needed Keep it with your other important papers This Fireplace is approved for use as a Wood Burning Fireplace or for use with a vented gas log approved to ANS Z21 60 Z21 84 or RGA 2 72 Standards or for use with a vent free gas log heater approved to ANS Z21 11 2 standard WARNING ALWAYS LEAVE GLASS DOORS FULLY OPENED OR FULLY CLOSED WHEN OPERATING THIS FIREPLACE 36 Wood ...

Страница 2: ...chimney sections and the effective height of the termination assembly INSTALLING THE FIREPLACE STEP 1 Frame the opening for the fireplace using the dimensions shown in FIGURE 1 2 or 3 STEP 2 If the fireplace is to be installed directly on carpeting tile other than ceramic or any combustible material other than wood flooring the fireplace must be installed upon a metal or wood panel extending the f...

Страница 3: ...REPLACE MUST NOT BE OBSTRUCTED NEVER USE BLOWN INSULATION TO FILL THE CHIMNEY ENCLOSURE SEE FIG 5 Continue to assemble chimney sections as outlined above making sure that both the inner and outer pipe sections are locked together When installing double wall snap lock chimney together it is important to assure the joint between the chimney sections is locked Check by pulling chimney upward after lo...

Страница 4: ...r a given span usually 12 inches A 6 12 pitch means that the roof drops 6 inches for each 12 inches one measures horizontally down the roof STEP 3 Use the roof opening chart below to determine the correct opening length and flashing required see figure 8 STEP 4 Remove the shingles around the opening measured and cut out this section STEP 5 Add the next sections of the pipe until the end penetrates...

Страница 5: ...t smoke spillage from one termination to another We suggest that terminations be separated at least 30 inches center to center and stacked at vertical height difference of 18 inches see figure 12 10 FOOT RULE All chimney terminations must extend a minimum of 3 feet in height above the highest point where it passes through the roof and must be at least 2 feet above the peak of the roof if within a ...

Страница 6: ... per chimney system SEE FIGE 17 Figure 17 TYPICAL OFFSET INSTALLATION Figure 15 OFFSET RISE A B 48 36 24 18 12 4 3 8 16 3 8 9 3 4 25 1 2 1 12 3 4 30 3 4 1 15 34 3 4 1 18 40 1 1 21 1 4 46 1 4 1 23 3 4 49 1 4 1 1 27 3 4 56 3 4 1 30 60 3 4 1 1 33 66 1 1 36 71 1 1 38 1 4 75 2 41 1 4 80 1 4 1 1 1 45 86 3 4 2 46 3 4 89 1 2 1 1 1 51 97 1 1 53 1 4 101 2 1 56 1 4 106 1 4 2 59 1 4 111 1 2 1 1 1 61 3 4 115 1...

Страница 7: ...fractory knockout hole with refractory cement or commercial furnace cement Install the decorative gas appliance or cap off gas line if desired The gas pipe is intended for connection to a decorative gas appliance vented gas log If you wish to install an unvented gas log set ONLY UNVENTED GAS LOG SETS WHICH HAVE BEEN FOUND TO COMPLY WITH THE STANDARD FOR UNVENTED ROOM HEATERS ANS Z21 11 2 ARE TO BE...

Страница 8: ...facturer or supplier of the non combustible material If the hearth extension is to be covered use non combustible material such as tile slate brick concrete metal glass marble stone etc Fasten the hearth extension to the floor to prevent shifting and seal the gap between the fireplace frame and hearth extension with a non combustible material see figure 22 WARNING HEARTH EXTENSION IS TO BE INSTALL...

Страница 9: ... OPERATION The damper handle to open and close the damper blade is located inside the firebox at the center towards the back wall Pushing the handle back in the keyway slot will free the damper blade to automatically open To close reach in and push the handle back into the keyhole slot then pull down and forward to lock it in place see figure 26 WARNING Damper handle will remain hot even after the...

Страница 10: ...9 REPLACEMENT PARTS ACCESSORY PARTS ...

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