New Buck Corporation 81 Manuel D’Utilisation

maintaining clearances to ceiling as noted in Figure 7.  This will give you center of hole for   
chimney penetration. 

 
4.  After locating center of penetration, install  tee box and chimney as per chimney 

manufacturer's  specifications. 

 
5.  Connect chimney collar to tee-box using #24 ga. minimum blued or black steel connector 

pipe.  (DO NOT USE GALVANIZED PIPE). Connect  each section so crimped end faces 
downward and secure each section to each other using three (3) sheet metal screws or rivets. 

 
C. Wall Exit Into Masonry (Using Single Wall Pipe) 
 
1.  Before connecting this unit to a  masonry  chimney, determine that masonry fireplace wall 

pass-through  connector thimble meets NFPA-211  Code and local building codes and  is 
a  minimum  of 18" from ceiling.  If connector  thimble does  not  meet these codes, the pass
-through connector  must  be modified. (See Figure 8). 

 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

F

igure 8 

 

       

Connectors  may pass through walls or partitions  constructed  of combustible material if  

connector is: 
 
(a)  Either listed for wall pass-through or is routed through a device listed for wall pass-

through and is  installed in accordance with conditions of listing. 

(b) Selected or fabricated in accordance with conditions and  clearances  as  stated in NFPA

-211 Code.  Any unexposed metal that is used as part of a  wall  pass-through system 
and is exposed to flue gases shall be  constructed of stainless steel or other equivalent 
material that will resist corrosion, softening, or cracking from flue gases at temperatures 
up to 1800

o

  F. 

 
    

Page 17