Manual
10
Figure 10
Figure 11
Step 9. Slide the Wall Thimble Cover (940) 
over the Retro Connector and secure with 
masonry bolts. (Figure 10) If you have a 
framed wall in front of the masonry, use 
wood screws to mount the Wall Thimble 
Cover to the framed wall, over the Retro 
Connector and the 10” square framed 
opening. (Figure 11) If needed, add a section 
of direct vent pipe to the Retro Connector in 
order to extend through the opening in the 
Wall Thimble Cover.
Step 10. The connection between the 
appliance and the Retro Connector may be 
completed with section of black direct vent 
pipe, together with adjustable length pipe 
section.
Retro 
Connector
Masonry Chimney
Stud Wall
10” x 10” framed 
opening in wall
Retro Connector
Wall Thimble Cover
Wall Thimble Cover
(4) Masonry Bolts 
(Not Included)
(4) Masonry Bolts 
(Not Included)










