John Wood Takagi - 110-310-510 - Manual (Page 9)

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6. Recess box: TK-RB02
The Recess box will allow for “clean” installations. The water heater fits inside
the recess box, which hides and protects the whole water heater and plumb-
ing. The Recess box will fit in-between most wall studs.
7. T-Vent Wall Thimble with Termination: TK-KPWL4 and TK-KPWH4
Louver Termination
TK-KPWL4
Hood Termination
TK-KPWH4
These terminations are used when venting out through the wall and are com-
patible with the T-Vent pipe system. These terminations are special stainless
steel vents for gas appliances and are UL listed as Category II, III and IV.
There are two types of terminations: the Louver termination and the Hood
termination. For different wall thicknesses, there are two ranges of lengths
available (refer to the venting brochure for details). Install these vent termi-
nations in accordance with their installation instructions and any applicable
local codes.
8. Direct-Vent Concentric Termination: TK-KPCT43
Used when terminating direct-vent (sealed-combustion) systems, with direct-
vent models that require a 76mm (3 in.) intake and a 102mm (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 three different sizes, to
cover all ranges of wall thicknesses.
Direct-vent Concentric Termination
Part# Covering wall thickness
TK-KPCT43-1 99 - 180mm (3.9 – 7.1 in.)
TK-KPCT43-2 175 - 257mm (6.9 – 10.1 in.)
TK-KPCT43-3 249 - 330mm (9.8” – 13.0 in.)