6
Value
Series
Manual
Environment
Air
surrounding
the
water
heater,
ven ng,
and
vent
termina on(s)
is
used
for
combus on
and
must
be
free
of
any
compounds
that
cause
corrosion
of
internal
components.
These
include
corrosive
compounds
that
are
found
in
aerosol
sprays,
detergents,
bleaches,
cleaning
solvents,
oil
based
paints/
varnishes,
and
refrigerants.
The
air
in
beauty
shops,
dry
cleaning
stores,
photo
processing
labs,
and
storage
areas
for
pool
supplies
o en
contains
these
compounds.
Therefore
it
is
recommended
that
outdoor
models
be
used
for
these
loca ons
where
possible.
The
water
heater,
ven ng,
and
vent
termina on(s)
should
not
be
installed
in
any
areas
where
the
air
may
contain
these
corrosive
compounds.
If
it
is
necessary
for
a
water
heater
to
be
located
in
areas
which
may
contain
corrosive
compounds,
the
following
instruc ons
are
strongly
recommended.
IMPORTANT
CONSIDERATIONS
FOR:
Indoor/Internal
Water
Heaters
•
DO
NOT
Install
in
areas
where
air
for
combus on
can
be
contaminated
with
chemicals.
•
Before
installa on,
consider
where
air
has
the
ability
to
travel
within
the
building
to
the
water
heater.
•
Where
possible,
install
the
water
heater
in
a
sealed
closet
so
that
it
is
protected
from
the
poten al
of
contaminated
indoor
air.
•
Chemicals
that
are
corrosive
in
nature
should
not
be
stored
or
used
near
the
water
heater.
Outdoor/External
Water
Heaters
and
Vent
Termina ons
of
Indoor/Internal
Water
Heaters
•
Install
the
water
heater
as
far
away
as
possible
from
exhaust
vent
hoods.
•
Install
as
far
away
as
possible
from
air
inlet
vents.
Corrosive
fumes
may
be
released
through
these
vents
when
air
is
not
being
brought
in
through
them.
•
Chemicals
that
are
corrosive
in
nature
should
not
be
stored
or
used
near
the
water
heater
or
vent
termina on.
Damage
and
repair
due
to
corrosive
compounds
in
the
air
is
not
covered
by
warranty.
Considera on
of
care
for
your
water
heater
should
include
evalua on
of
water
quality.
Water
that
contains
chemicals
exceeding
the
levels
below
a
ff
ect
and
damage
the
heat
exchanger.
Replacement
of
the
heat
exchanger
due
to
water
quality
damage
is
not
covered
by
the
warranty.
Maximum
Level
Total
Hardness
Up
to
200
mg
/
L
Aluminum
*
Up
to
0.2
mg
/
L
Chlorides
*
Up
to
250
mg
/
L
Copper
*
Up
to
1.0
mg
/
L
Iron
*
Up
to
0.3
mg
/
L
Manganese
*
Up
to
0.05
mg
/
L
pH
*
6.5
to
8.5
TDS
(Total
Dissolved
Solids)
*
Up
to
500
mg
/
L
Zinc
*
Up
to
5
mg
/
L
Determine
Installa on
Loca on
Water
Quality
*
Source:
Part
143
Na onal
Secondary
Drinking
Water
Regula ons
If
you
install
this
water
heater
in
an
area
that
is
known
to
have
hard
water
or
that
causes
scale
build
‐
up
the
water
must
be
treated
and/or
the
heat
exchanger
fl
ushed
regularly.
When
scale
build
‐
up
in
the
heat
exchanger
begins
to
a
ff
ect
the
performance
of
the
water
heater,
a
diagnos c
code
“LC#”
will
display.
Flush
the
heat
exchanger
to
prevent
damage
to
it.
Scale
build
up
is
caused
by
hard
water
set
at
a
high
temperature.
Rinnai
provides
a
“Scale
Control
System”
that
o
ff
ers
superior
lime
scale
preven on
and
corrosion
control
by
feeding
a
blend
of
control
compounds
into
the
water
supply.
You
must
ensure
that
clearances
will
be
met
and
that
the
vent
length
will
be
within
required
limits.
Consider
the
installa on
environment,
water
quality,
and
need
for
freeze
protec on.
Requirements
for
the
gas
line,
water
lines,
electrical
connec on,
and
condensate
disposal
can
be
found
in
their
respec ve
installa on
sec ons
of
this
manual.
Summary of Contents for . REU-VC2025FFU-US
Page 27: ...Value Series Manual 27 Ladder Diagram ...
Page 77: ...Value Series Manual 77 ...
Page 78: ...78 Value Series Manual ...
Page 79: ...Value Series Manual 79 ...
