Sapphire Audio DV425TR Manual De Usuario

02/01                                                                                     Page 40                                                                               250-5533

 

Before cutting any holes, assemble the desired sections of direct vent pipe to determine the center 

of the masonry penetration.
Step 2.

 

Once the center point of the penetration has been determined, cut a 6” (152mm) diameter hole in the 

masonry. If the hole is too large, the retro connector might not mount properly; if the hole is too small, the 

appliance might starve for intake air. If there is a frame wall in front of the masonry wall, cut and frame a 

10” (254mm) square opening in the wall (centered around the 6” [152mm] masonry opening). If there is sheet 

rock only (no studs) in front of the masonry the 10” (254mm) opening is still needed, but does not need to be 

framed. This allows the retro connector to mount directly on the masonry and provide the correct clearances 

to combustibles (see Figure 22).