2
SAFETY
Important
-
This
document
contains
a
wiring
diagram
and
service
information
.
This
is
customer
property
and
is
to
remain
with
this
unit
.
Please
return
to
service
informa
-
tion
pack
upon
completion
of
work
.
Failure
to
follow
this
warning
could
result
in
property
damage
,
severe
personal
injury
,
or
death
.
Disconnect
all
electric
powe r
,
Including
remote
disconnects
before
servicing
.
Follow
proper
lockout
/
tagout
procedures
to
ensure
the
power
cannot
be
inadvertently
energized
.
HAZARDOUS
VO LTAGE!
Any
attempt
to
repair
a
central
air
conditioning
product
may
result
in
property
damage
,
severe
personal
injury
,
or
death
.
These
units
use
R-410 A
refrigerant
which
operates
at
50
to
7o%
higher
pressures
than
R-22
.
Use
only
R
-
410A
approved
service
equipment
.
Refrigerant
cylinders
are
painted
a
“
Rose
”
color
to
indicate
the
type
of
refrigerant
and
may
contain
a
“
dip
”
tube
to
allow
for
charging
of
liquid
refrigerant
into
the
system
.
All
R
-
410A
systems
with
variable
speed
compressors
use
a
PVE
oil
that
readily
absorbs
moisture
from
the
atmosphere
To
limit
this
“
hygroscopic
”
action
.
the
system
should
remain
sealed
whenever
possible
.
If
a
system
has
been
open
to
the
atmosphere
for
more
than
4
hours
,
the
compressor
oil
must
be
replaced
.
Never
break
a
vacuum
with
air
and
always
change
the
driers
when
opening
the
system
for
component
replacement
.
May
cause
minor
to
severe
burning
.
Failure
to
follow
this
Caution
could
result
in
property
damage
or
personal
injury
.
Do
not
touch
top
of
compressor
.
REFRIGERANT
OIL!
HOT
SUR FACE!
WARNING
CAUTION
This
information
is
intended
for
use
by
individuals
possessing
adequate
backgrounds
of
electrical
and
mechanical
experience
.
Any
attempt
to
repair
a
central
air
conditioning
product
may
result
in
personal
injury
and
/
or
property
damage
.
The
manufacturer
or
seller
cannot
be
responsible
for
the
interpretation
of
this
information
,
nor
can
it
assume
any
liability
in
connection
with
its
use
.
CAUTION
WARNING
Failure
to
follow
proper
procedures
can
result
in
personal
illness
or
injury
or
severe
equipment
damage
.
System
contains
oil
and
refrigerant
under
high
pressure
.
Recover
refrigerant
to
relieve
pressure
before
opening
system
.
CON TAINS
REFRIGERANT!
Failure
to
inspect
or
use
proper
service
tools
may
result
in
equipment
damage
or
personal
injury
.
Reconnect
all
grounding
devices
.
All
parts
of
this
product
that
are
capable
of
conducting
electrical
current
are
grounded
.
if
grounding
wires
,
screws
,
straps
,
clips
,
nuts
,
or
washers
used
to
complete
a
path
to
ground
are
removed
for
service
,
they
must
be
returned
to
their
original
position
and
properly
fastened
.
GROUNDING
REQUIRED!
Failure
to
follow
this
warning
will
result
in
abrupt
release
of
system
charge
and
may
result
in
personal
injury
and
/
or
property
damage
.
Extreme
caution
should
be
exercised
when
opening
the
Liquid
Line
Service
valve
.
Turn
valve
stem
counterclockwise
only
until
the
stem
contacts
the
rolled
edge
.
No
torque
is
required
.
SERVICE
VALVES
!
Failure
to
inspect
lines
or
use
proper
service
tools
may
result
in
equipment
damage
or
personal
injury
.
if
using
existing
refrigerant
lines
make
certain
that
all
joints
are
brazed
,
not
soldered
.
BRAZING
REQUIRED
!
Failure
to
follow
this
warning
could
result
in
property
damage
,
severe
personal
injury
,
or
death
.
Earth
connection
essential
before
connecting
electrical
supply
.
HIGH
LEAKAGE
CURRENT!
CAUTION
CAUTION
WARNING
WARNING
WARNING
Summary of Contents for 18S-EHVC24WD2V
Page 3: ...1 ...