Value
Series
Manual
11
Freeze
Protec on
Make
sure
that
in
case
of
freezing
weather
that
the
water
heater
and
its
water
lines
are
protected
to
prevent
freezing.
Damage
due
to
freezing
is
not
covered
by
the
warranty.
Loss
of
freeze
protec on
may
result
in
water
damage
from
a
burst
heat
exchanger
or
water
lines.
With
electrical
power
supplied,
the
water
heater
will
not
freeze
when
the
outside
air
temperature
is
as
cold
as
–22°F
(
‐
30°C)
for
indoor
models
or
is
as
cold
as
–4°F
(
‐
20°C)
for
outdoor
models,
when
protected
from
direct
wind
exposure.
Because
of
the
“wind
‐
chill”
e
ff
ect,
any
wind
or
circula on
of
the
air
on
the
unit
will
reduce
its
ability
to
freeze
protect.
The
unit
may
be
drained
manually.
However,
it
is
highly
recommended
that:
•
drain
down
solenoid
valves
are
installed
that
will
automa cally
drain
the
unit
if
power
is
lost.
These
are
available
in
a
kit,
104000059.
(The
condensate
trap
drain
plug
and
water
drain
plug
are
not
a
ff
ected
by
the
auto
drain
down
solenoid
valves
and
will
have
to
be
manually
opened.)
•
a
surge
protector
with
terminals
is
installed
which
allows
the
solenoid
valves
to
operate
if
the
unit
is
disabled
due
to
a
diagnos c
code.
This
is
available
as
104000057.
In
addi on,
the
solenoid
valves
should
be
connected
electrically
to
a
surge
protector
with
terminals.
This
allows
the
solenoid
valves
to
operate
if
the
water
heater
is
disabled
due
to
a
diagnos c
code.
The
freeze
protec on
features
will
not
prevent
the
external
piping
from
freezing.
It
is
recommended
that
hot
and
cold
water
pipes
are
insulated.
Pipe
cover
enclosures
may
be
packed
with
insula on
for
added
freeze
protec on.
In
the
event
of
a
power
failure
at
temperatures
below
freezing
the
water
heater
should
be
drained
of
all
water
to
prevent
freezing
damage.
In
addi on,
drain
the
condensate
trap
and
drain
line.
Maximum
vent
length
(indoor
models
only)
1.
Determine
the
number
of
90
degree
elbows
in
the
vent
system.
(Two
45
degree
elbows
count
as
one
90
degree
elbow.)
2.
Refer
to
the
table
to
fi
nd
the
maximum
vent
length
based
on
the
number
of
elbows.
3.
Adjust
switch
No.
1
in
the
SW1
DIP
switch
(tan
switches)
if
required
by
the
applicable
note.
1
If
the
length
is
greater
than
21
(6.4
m)
then
move
switch
No.
1
(SW1)
to
OFF.
2
If
the
length
is
greater
than
15
(4.6
m)
then
move
switch
No.
1
(SW1)
to
OFF.
3
If
the
length
is
greater
than
9
(2.7
m)
then
move
switch
No.
1
(SW1)
to
OFF.
4
Move
switch
No.
1
(SW1)
to
OFF.
Example:
If
you
have
one
elbow
then
your
maximum
vent
length
is
35
feet
(10.7
m).
If
your
actual
length
is
greater
than
15
(4.6
m)
then
move
switch
no.
1
(SW1)
to
OFF.
Number
of
90°
Elbows
Maximum
vent
length
0
41
(12.5
m)
1
1
35
(10.7
m)
2
2
29
(8.8
m)
3
3
23
(7.0
m)
4
4
17
(5.2
m)
4
5
11
(3.4
m)
4
6
5
(1.5
m)
4
If
you
have
a
longer
vent
length
(see
above),
switch
No.
1
is
required
to
be
in
the
OFF
posi on.
This
ensures
the
water
heater
will
run
properly.
Blocked
fl
ue
diagnos c
codes
and
shutdowns
may
result
if
switch
No.
1
is
not
in
the
correct
posi on.
NOTICE
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