Installation
12
│
Page
Improper
installation
can
cause
nausea
or
asphyxiation,
severe
injury
or
death
from
carbon
monoxide
and
flue
gases
poisoning.
Improper
installation
will
void
product
warranty.
•
Do
not
common
vent
this
appliance
with
any
other
vented
appliance
(Do
not
terminate
vent
into
a
chimney.
If
the
vent
must
go
through
the
chimney,
the
vent
must
run
all
the
way
through
the
chimney
with
Category
III
/
IV
approved
or
Special
BH
vent
pipe)
.
•
The
maximum
length
of
exhaust
vent
piping
must
not
exceed
50
ft.
(deducting
5
ft.
for
each
elbow
used
in
the
venting
system).
Do
not
use
more
than
5
elbows.
•
When
the
horizontal
vent
run
exceeds
5
ft.,
support
the
vent
run
at
3
ft.
intervals
with
overhead
hangars.
Diameter
Max.
No.
of
Elbow
Max.
Vertical
&
Horizontal
(Total)
Vent
Length
4”
5
50
ft.
*For
each
elbow
added,
deduct
5
ft.
from
max.
Vent
length.
No.
of
Elbows
Max.
Vertical
or
Horizontal
Length
0
50
ft.
1
45
ft.
2
40
ft.
5
25
ft.
‐
Vent
termination
‐
•
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.
•
A
proper
sidewall
direct
‐
vent
terminator
is
recommended
when
the
water
heater
is
vented
through
a
sidewall.
General
rules
for
venting
the
T
‐
H2
‐
DV
water
heater
are:
1.
Place
the
water
heater
as
close
as
possible
to
the
vent
terminator.
2.
The
vent
collar
of
the
water
heater
must
be
fastened
directly
to
an
unobstructed
vent
pipe
or
TH
‐
PA01
adaptor.
3.
Do
not
weld
the
vent
pipe
to
the
water
heater
collar.
4.
Do
not
cut
the
vent
collar
of
the
unit.
5.
The
weight
of
the
vent
stack
must
not
rest
on
the
water
heater.
6.
The
vent
must
be
easily
removable
from
the
top
of
the
water
heater
for
normal
service
and
inspection
of
the
unit.
7.
The
water
heater
vent
must
not
be
connected
to
any
other
gas
appliance
or
vent
stack.
8.
Avoid
locating
the
water
heater
vent
terminator
near
any
air
intake
devices
.
These
fans
can
pick
up
the
exhaust
flue
products
from
the
water
heater
and
return
them
to
the
building.
This
can
create
a
health
hazard.
9.
Avoid
using
an
oversized
vent
pipe
or
using
extremely
long
runs
of
the
pipe.
10.
Locate
the
vent
terminator
so
that
it
cannot
be
blocked
by
any
debris,
at
any
time.
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.
11.
For
rooftop
venting,
a
rain
cap
or
other
form
of
termination
that
prevents
rain
water
from
entering
into
the
water
heater
must
be
installed.
WARNING
