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When installing the vent system, all applicable
national and local codes must be followed. If
you install thimbles, fire stops or other
protective devices and they penetrate any
combustible or noncombustible construction,
be sure to follow all applicable national and
local codes.
When the horizontal vent run exceeds 5 ft., the
following criteria must be observed:
•
Support the vent run at 3 ft intervals with
overhead hangers.
•
Slope the vent run downwards toward the
vent terminal at a rate of ¼” per foot.
Vent Termination
A sidewall vent terminator must be used when
the appliance is vented through a sidewall.
Takagi recommends the use of its part No.TK-
TV01 or the TK-TV05 with the TK-TV07 when
using the direct vent option. The vent
terminator provides a means of installing vent
pipe through the building wall and must be
located in accordance with ANSI Z223.1/NFPA
54, or in Canada with CAN/CSA-B149.1 and
local applicable codes.
Locate the vent terminator so that it cannot be
blocked by snow. Most codes require that the
terminator be at least 12 inches above grade,
but the installer may determine if it should be
higher depending on the job site condition and
applicable codes.
WARNING:
Improper installation can cause
nausea or asphyxiation, severe injury or death
from carbon monoxide and flue gases
poisoning. Improper installation will void
product warranty. For high altitude installation
above 4,500 feet, contact Takagi on how to
handle this situation.
General rules for venting the T-H1 appliance
are:
1. Place the appliance as close as possible
to the vent terminator;
2. The vent collar of the appliance must be
fastened directly to an unobstructed vent
pipe.
3. Do not weld the vent pipe to the appliance
collar.
4. The weight of the vent stack must not rest
on the appliance.
5. The vent must be easily removable from
the top of the appliance for normal service
and inspection of the unit.
6. The appliance vent must not be connected
to any other gas appliance or vent stack.
7. Avoid locating the appliance vent
terminator near any air intake devices or
air-conditioning units. These fans can pick
up the exhaust flue products from the
appliance and return them to the building.
This can create a health hazard.
8. Avoid using an oversized vent pipe or
using extremely long runs of the pipe.
Rain cap
Roof
Flashing
Condensation drain
(Install according to
local code)
TK-TV03 (Back flow
prevention)
z
Regarding the clearance from the
terminator to the air inlet or opening,
refer to the next page.
z
Install a condensation drain in the
venting.
z
Follow the vent system to vent
manufacture’s instruction and local
code.
z
Do not common vent or connect any
vent of appliance to the vent.
z
Use the 4” category III Vent pipe
approved, single wall stainless steel
vent pipe.
The exhaust
goes to the roof
