Hearth and Home Technologies PALOMA-BZ To determine the length of flex needed, measure from

CAUTION

Ensure that existing chimney is functionally sound and clean.

•Have inspection done by qualified chimney sweep or professional installer BEFORE converting to direct vent appliance.

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

2.Once the center point of the penetration has been determined, cut a 6 in. (152 mm) 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 in. (254 mm) square opening in the wall (centered around the 6 in. (152 mm) masonry opening). If there is sheet rock only (no studs) in front of the masonry the 10 in. (254 mm) opening is still needed, but does not need to be framed. If the hole is framed a round support box/wall thimble is required. This allows the retro connector to mount directly on the masonry and provide the correct clearances to combustibles (Figure 5.25).

STUDWALL

CUT AND BEND FLASHING

AS NEEDED TO FIT CHIMNEY

Figure 5.26 SEALANT-ADHESIVE

4.	To determine the length of flex needed, measure from
	3 in. (76 mm) 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
	in. (102 mm) flex to this length (extended to its nominal
	length). Be sure to leave 2-3 in. (51-76 mm) of flex
	above the existing chimney to allow for connection to
	the termination kit.
5.	Connect the flex liner to the top adapter using three
	sheet metal screws (Figure 5.21 page 20).
6.	Feed the flex liner through the flashing into the

10 in. x 10 in.

(254 mm x 254 mm)

FRAMED OPENING IN WALL

RETRO

CONNECTOR

MASONRY CHIMNEY

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

Fire Risk.

FOUR MASONRY BOLTS	WALL THIMBLE COVER
(NOT INCLUDED)

NOTE: For hearth applications refer to page 20, Figure 5.24 for the use of the 923GCL co-axial to co-linear appliance con- nector.

Figure 5.25

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 (Figure 5.26).

Explosion Risk.

• 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.

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 sheet metal screws for each side (Figure 5.27, on the next page).

22 Heat & Glo • Paloma • 7031-220 Rev. P • 10/08