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INSTALLATION INTO AN EXISTING MASONRY CHIMNEY (USA ONLY)
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 Fig. 21).
Step 3.
Secure the flashing to the top of the masonry
chimney using a bead of non-hardening sealant-adhesive. If
the flashing is larger than the top of the chimney, cut and fold
flashing as needed to fit chimney (Fig. 22).
Step 4. To determine the length of flex needed, measure from 3" (76mm) above the top of the
flashing down to the level of the opening. Add the distance from the center of the chimney out
through the wall. Cut a piece of 4" (102mm) flex to this length (extended to its nominal length).
Be sure to leave 2"-3" (51mm-76mm) of flex above the existing chimney to allow for connection
to the termination kit.
Step 5. Connect the flex liner to the top adapter using four (4) sheet metal screws (see Fig.
18, page 32).
Step 6. Feed the flex liner through the flashing into the chimney. Carefully feed the flex liner
down the chimney to the bottom and out the opening in the masonry wall, forming an angle to
line up the flex liner with the vent opening on the appliance.
WARNING: Do not let the flex liner sag below the level at which it
will connect to the appliance or connector. This could allow hot gas
to become trapped and potentially become a fire hazard.The flex liner
path should always be sloped up toward the termination cap.
Step 7. If additional lengths of flex liner are needed to span the
chimney height, use a flex coupler to connect the pieces of flex liner
together. Connect the flex to the coupler by using four (4) sheet metal
screws for each side (Fig. 23).
Step 8. Secure the top adapter to the flashing. Use three (3) sheet
metal screws through the side of the top adapter into the flange on the
flashing (Fig. 24). Twist lock the high wind termination cap on to the top
adapter
Step 9. Attach the flex to the retro connector. Use three sheet metal screws to attach the flex liner to the connector (Fig.
25, on page 34). Mount the retro connector to the masonry wall using masonry bolts. Re-drill larger holes on connector as
needed. Be careful to ensure that the connector is centered in the opening and the mounting holes line up with the masonry
wall.
Step 10. Slide wall thimble cover over retro connector and secure with masonry bolts (Fig. 26, page 34). If you have a
framed wall in front of the masonry, use wood screws to mount wall thimble cover to framed wall, over retro connector and
10" (254mm) square framed opening (Fig.21). 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.
VERTICAL INSTALLATION
Page 33
(cont'd.)
FIG. 21
10" x 10" FRAMED
OPENING IN WALL/
OUVERTURE DE 25,4 cm x
25,4 cm (10 po x 10 po)
ENCADRÉE, AMÉNAGÉE
DANS LE MUR
RETRO CONNECTOR/
RACCORD DE
RÉTROCOMBUSTION
(4) MASONRY BOLTS (NOT INCLUDED)/
(4) BOULONS DE MAÇONNERIE (NON
FOURNIS)
NOTE: FOR HEARTH APPLICATIONS REFER TO PAGE 22
FOR THE USE OF THE 923GCL CO-AXIAL TO CO-LINEAR
APPLIANCE CONNECTOR.
FLEX LINER/
TUYAU FLEXIBLE
FLEX COUPLER/
RACCORD
SHEET METAL
SCREWS/VIS À
TÔLE
FIG. 23
STUDWALL/
CLOISON
LATTÉE ET
PLÂTRÉE
MASONRY
CHIMNEY/
CHEMINÉE EN
MAÇONNERIE
WALL THIMBLE
COVER/COUVERCLE
DE GAINE MURALE
FIG. 22
CUT AND BEND
FLASHING AS NEEDED
TO FIT CHIMNEY/
COUPEZ ET REPLIEZ LE
SOLIN POUR L'ADAPTER
À LA CHEMINÉE
SEALANT-ADHESIVE/
SCELLANT ADHÉSIF
HIGH WIND
TERMINATION CAP/
CAPUCHON POUR
VENTS FORTS
TOP ADAPTOR/
ADAPTATEUR
SUPÉRIEUR
(3) SHEET METAL
SCREWS/(3) VIS À
TÔLE
FLASHING/SOLIN
FIG. 24
250-7471
November 15, 2002
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