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heater. Remove any protective tape from the
end of the 4-inch stainless steel flexible pipe
and fasten the flexible pipe to the Katydid™
wood stove heater, using a minimum of three
self-tapping screws per joint.
!
8. From the rooftop, pull the excess 4-inch
stainless steel flexible pipe from the top of the
masonry fireplace chimney, leaving sufficient
length to fit into the chimney cap. Use a
hacksaw or other cutting device to cut the
stainless steel flexible pipe. Wear gloves, to
prevent cuts from sharp metal edges. Secure
to the chimney cap with a minimum of three
self-tapping screws.
!
9. When connected, use 3M™ Fireblock sealant
(or equivalent) and concrete screws to secure
the chimney cap in place.
!
10. Install fiberglass insulation around the damper
area inside the fireplace to prevent unwanted
drafts from entering the house through the
chimney.
!
11. Caution: Never utilize make-shift compromises
during installation. Never install any wood
stove or chimney systems outside of the
provisions outlined in the NFPA-211 safety
standards.
!
RELINING A MASONRY CHIMNEY
!
1. See Diagram #9.
!
2. The Katydid™ wood stove heater is certified to
use 18 gauge, 4-inch (10.16 cm) double-wall
all-fuel stainless steel rigid pipe as a connector
from the flue outlet on the stove to the opening
of the masonry chimney. We recommend TYPE
PL All Fuel Vent by Simpson DuraVent,
available at most wood stove shops. In
addition, the penetration through the wall of the
masonry chimney must include approved wall
thimble, using 6-inch (15.24 cm) Type 103HT
(U.S.), ULC629 (Canada) Class-A as a conduit
in accordance with UL-Listed wood stove
installations, and must meet all county and
state requirements for such installations. The
masonry chimney itself must be lined with 4-
inch (10.16 cm) single wall stainless steel
flexible pipe from the top of the masonry
chimney down to opening in the masonry
chimney which accommodates the approved
wall thimble. All joints must be secured with at
least 3 self-tapping screws per joint.
!
!
K a t y d i d ™ W o o d S t o v e
3. Using gloves to protect your hands, unroll 4-
inch stainless steel flexible pipe, on the ground
outside of house, and straighten it as much as
possible to make it easier to insert it through
the masonry chimney.
!
4. Climb onto the roof and remove the cap from
the top of the masonry chimney and check for
any obstacles in masonry flue.
!
5. Begin sliding the 4-inch stainless steel flexible
pipe into the masonry chimney.
small 4-inch diameter of the stainless steel
flexible pipe, little resistance should be felt as it
passes through the masonry chimney. It may
be helpful to have an installation partner down
below, to assist with sliding the flexible pipe
through the chimney to the opening in the
sidewall of the masonry chimney.
!
6. At the opening in the sidewall of the masonry
chimney, the 4-inch stainless steel pipe must
pass through a Type 103HT (U.S.), ULC629
(Canada) Class-A UL-Listed factory built wall
thimble and chimney pipe, as previously
mentioned. Carefully follow all manufacturer's
installation instructions. Caution: Never install
any wood stove or chimney systems outside of
the provisions outlined in the NFPA-211 safety
standards.
!
7. From the rooftop, pull the excess 4-inch
stainless steel flexible pipe from the masonry
fireplace chimney, leaving sufficient length to fit
into the chimney cap. Use a hacksaw or other
cutting device to cut the stainless steel flexible
pipe. Wear gloves, to prevent cuts from sharp
metal edges. Secure to the chimney cap with a
minimum of three self-tapping screws.
!
8. When connected, using 3M™ Fireblock sealant
(or equivalent) and concrete screws to secure
the chimney cap in place.
!
9. Caution: Never utilize make-shift compromises
during installation. Never install any wood
stove or chimney systems outside of the
provisions outlined in the NFPA-211 safety
standards.
!
STARTING & MAINTAINING A FIRE
!
1. When your installation is complete and it is
time to lay a fire in your Katydid™ wood stove
heater, we urge you to "think small". Because
the flue temperature will be cold, it is important
to start with a small fire to warm the flue and
establish a good draft in the vent pipe, before
! 8
Due to the
w w w. U n f o r g e t t a b l e F i r e L L C . c o m
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