Existing Masonry Chimey - Dovre SAPPHIRE DV425TR Owner's Manual And Installation Instructions

INSTALLATION INTO AN EXISTING MASONRY CHIMNEY
Step 1.
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).
Fig. 22
NOTE: FOR HEARTH
APPLICATIONS REFER TO
PAGE 24 FOR THE USE
OF THE 923GCL CO-AXIAL
TO CO-LINEAR APPLIANCE
CONNECTOR.
02/01
VERTICAL INSTALLATION, cont.
(USA ONLY)
STUDWALL
10" x 10" FRAMED
OPENING IN WALL
RETRO
CONNECTOR
(4) MASONRY BOLTS
(NOT INCLUDED)
DV425TR DIRECT VENT ROOM HEATER
WALL THIMBLE
COVER
Page 40
MASONRY
CHIMNEY
250-5533