44
VENTING
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
#BAY-41-MV R.1 July 2021
7.8 #700-2 Series Direct Vent
Termination Kit(s)
WARNING: #700-2 Series is for top vent applications ONLY. Do not
install off the rear of the appliance.
IMPORTANT: The flex pipe is permanently attached to the exterior plate.
DO NOT ATTACH either #745-2 or #718-2 termination kit to fireplace (or
extension kit) until it has passed through the wall. Install termination
plates to the outside wall exterior.
IMPORTANT: The minimum bend radius to center is 6” (152mm)
required for installation of the flexible vent pipe. Care should be taken
when installing to avoid a tight bend that may cause abrasion or
damage to the flexible pipe.
•
If terminating against vinyl siding, a vinyl siding protector must
be used (included with the #745-2 and #718-2 direct vent kits).
Follow instructions included.
•
Each #746-2 extension kit contains enough 4” & 7” flexible
aluminum pipe to extend chimney an additional 6’ (1.83m).
7.8.1 #700-WPT Installation Instructions
IMPORTANT: The heat shield within the wall thimble must overlap
a minimum of 1-1/2” (38mm). An extension will be needed if going
through a thicker wall than 6-1/2” (165mm). Refer to BDM vent
manufacturer if wall extension is necessary.
1. Hand bend the (2) tabs on the top of the wall pass through at the
1” (25mm) top required clearance. Hand bend the (6) tabs on the
sides and bottom of the wall pass through. Repeat for the other
section.
2. From the interior, install one section of the wall pass through.
Secure with (4) screws (not provided).
3. From the exterior, install the other section of the wall pass
through, overlapping the heat shields as necessary to
accommodate wall thickness. The sections must overlap a
minimum of 1-1/2” (38mm). Secure to exterior wall with (4)
screws (not provided).
4. Follow vent manufacturer installation instructions for vent
installation.
7.8.2 Assembly and Installation
5. Attach vinyl siding protector (G) (not shown).
6. Mount the required wall thimble (H) with 1” (25mm) top
clearance and 1” (25mm) side clearance to the exterior wall, and
seal.
(OPTIONAL) insulate the wall thimble with any unfaced
A
B
E
F
H
STAND-OFF
BRACKETS
#700-WPT
STAND-OFF
HEAT SHIELDS
TOP VENT INSTALLATION ONLY
Figure 7.4, #700-WPT
insulation products listed as non-combustible per ASTM E 136.
7. Apply a liberal bead of exterior sealant around outer edge of
termination box (A). Place assembly through the wall-pass
through in exterior wall, and secure with (4) screws through the
four holes (B).
8. Form the 4” & 7” flexible aluminum pipes on termination kit
(#745-2 or #718-2), and if applicable, on each extension kit.
9. Gently pull 4” & 7” pipes down to the top of the fireplace, or if
applicable, the extension kit.
IMPORTANT: DO NOT stretch extension kit beyond 6’. (1.83m);
DO NOT stretch beyond what is required. It is very difficult to
decompress flex pipes once stretched.
10. Place a bead of sealant outside 4” flex pipe collar (C) (end with
EXTERNAL LIP) and sliding the collar into 4” pipe on extension kit
or top of fireplace (D). Secure with 3 evenly spaced screws.
11. Place a bead of sealant inside 7” flex pipe collar (E) (end with the
INTERNAL lip), sliding the collar over 7” pipe on top of fireplace
(F). Secure with 3 evenly spaced screws.
12. If additional extension kits are required, repeat Steps 4 and 5,
placing 4” & 7” pipes onto previous extension kit.
Figure 7.5, Installation and Assembly of #700-2 Series
3”
2”
1”
Hand bend tabs
Screw holes (4) total
DIAG.8
#700-2 Assembly and Installation
(A)
Termination box
(B)
Holes in exterior wall plate (only 3
shown)
(C)
4” flex pipe collar (not shown)
(D)
4” pipe on fireplace or extension kit
(not shown)
(E)
7” flex pipe collar
(F)
7” pipe on fireplace or extension kit
(G)
Vinyl siding protector (not shown)
(H)
Wall Thimble with 1” (25mm) top
clearance
