Takagi AT-KJr3U-IN Installation Manual And Owner's Manual page 10

1. 4" Backflow preventer and Female-female adaptor
9007996005
9008146004
9007996005 (4" Backflow preventer and F-F adaptor): Must be installed in the vertical position.
9008146005 (4" Universal Appliance Adaptor, F-F adaptor, backflow preventer, condensate drain trap): Must be installed in the
vertical position on the heater's flue collar.
2. Pipe cover: 9007670005 (TK-PC01)
The pipe cover protects
the plumbing pipes to
the water heater. It is
fixed to the bottom of
the water heater, so it
hides the plumbing and
improves the appearance
of the installation.
4. Sidewall vent terminator (Hood) and Wall thimble:
Terminator Hood
The terminator hood and wall thimble can be used to vent through a wall. These terminations are special stainless steel
vents for gas appliances and are listed as Category II, III and IV. For different wall thicknesses, there are two ranges of lengths
available. (Refer to the NovaVent brochure for details.) Install these vent terminations in accordance with their installation
instructions and any applicable local codes.
Sidewall vent termination (Round) and Wall thimble:
Covering wall thicknesses
Termination
Wall Thimble
Termination + Thimble
Refer to p. 21 regarding the DIP switch settings for the termination.
5. Direct-vent concentric termination:
3 in. intake and a 4 in. exhaust. This concentric termination provides the convenience
of only having to make one penetration through a sidewall instead of two separate
penetrations for the intake and exhaust piping. The termination includes a bird
screen, restricting small animals, pests, and foreign objects from entering into the
vent system. This sidewall termination is available in two different sizes to cover a
wide range of wall thicknesses. For different wall thicknesses,there are two ranges
of lengths available. (Refer to the venting manufacturer's specifications for details.)
It prevents the backflow of air through the exhaust vent. This
helps prevent harmful exhaust gases from entering the home, as
well as helping to prevent the unit from freezing in areas where
cold air can be blown or drawn into the exhaust system.
Install this adaptor in accordance with the installation instructions
that are packaged with the adaptor and any applicable codes.
3. Recess box:
the recess box, which hides and protects the whole water heater and plumbing.
The recess box will fit between most wall studs.
Outdoor recess box
for retrofic applications-
no flange
100266729
Wall Thimble
Part#
9008899005
9008898005
9008900005
Covering wall thicknesses
5.0 – 10.0 in.
12.0 – 18.0 in.
This component is used to terminate direct-vent (sealed
combustion) systems with indoor models that require a
10
It allows for "clean" installations. The water heater fits inside
100266730
Covering wall thicknesses
Terminator Hood
Wall Thimble 4 - 7 in.
Wall Thimble 5 - 10 in.
Termination + Thimble 4 - 7 in.
Termination + Thimble 5 - 10 in.
9008899005
(Termination)
9008900005 (Termination + Thimble)
Part#
9008147005
9008148005
Page
Installation Manual
Installation
Outdoor recess box
for new construction
applications-with flange
Part#
9007999005
9008345005
9008346005
9008004005
9008005005
9008898005
(Wall Thimble)
6. Remote controller:
9009069005 (TM-RE42)