Installation guide
I
Installation
Instructions
Split
System
Condensers
Line
Valves
The
outdoor
condensing
unit
is
supplied
with
straight
sweat
brass service
valves
with
copper
stubs.
All
line
valves
are
positioned
to
seal
the
refrigerant
in
the
condensing
unit
with
gauge
ports
open
to
connecting
lines
when
the
Schraeder
valve
is
depressed.
Gauge
ports
have
Schraeder
installed
and
require
use
of
charging
hoses
with
depressors.
Brazing
Connections
Fire
Hazard
Refrigerant
and
oil
mixture
under
pressure
could
ignite
as
it
escapes
and
contacts
brazing
torch
resulting
in
Fire.
Make
sure
the
refrigerant
charge
is
properly
removed
from
both
the
high
and
low
sides
of
the
system
before
brazing
any
compo-
nent
or
lines.
FAILURE
TO
DO
SO
COULD
RESULT
IN
BODILY
INJURY
OR
DEATH.
Before
making
braze
connections,
be
sure
all
joints
are
clean.
Before
heat
is
applied
for
brazing,
nitrogen
should
be
flowing
through
the
tubing
to
prevent
oxidation and
scale
formation
on
the
inside
of
the
tubing.
Liquid
&
Suction
Lines
Fully
annealed
refrigeration
lines
should
be
used
when
installing
the
system.
The
following
is
the
recommended
method
for
making
braze
connections
at
the
refrigerant
line
connections:
1.
Clean
refrigerant
tube
end
with
emery
cloth
or
steel
brush.
2.
Use
a
suitable
brazing
alloy
for
copper
to
copper
joints.
3.
Insert
tubing
into
swage
fitting
connection.
4.
Apply
heat
absorbing
paste
or
heat
sink
product
to
pre-
vent
damage
to
the
service
valve.
CAUTION
Do
not
heat
valve
body
above
250
degrees
F.
5.
Braze
joint.
6.
Quench
the
joint
and
tubing
with
water
using
a
wet
rag.
Leave
rag
on
fitting
body
and
re-wet
with
water
to
help
cool
area.
Evacuating,
And
Charging
Instructions
NOTE
Intentional
release
of
CFC
or
HCFC
Refrigerant
to
the
Atmosphere
violates
Federal
Law.
It
may
also
violate
State
and
Local
Codes.
Check
all
Federal,
State
and
Local
Codes
before
proceeding.
These
instructions
are
intended
for
use
with
condensing
units
that
are
precharged
at
the
factory
with
adequate
re-
frigerant
to
handle
15
feet.
NOTE:
Do
not
use
any
portion
of
the
charge
for
purging
or
leak
testing.
It
is
mandatory
that
a
thorough
evacuation
of
the
refrigerant
in
the
piping
and
evaporator
be
performed.
The
liquid
line
and
suction
line
service
valves
have been
closed
after
final
testing
at
the
factory.
Do
not
disturb
these
valves
until
the
lines
have
been
leak
checked
and
evacuated
or
the
charge
in
the
unit
may
be
lost.
Recommended
Method
Of
Evacuating
A
System
1.
Connect
the
vacuum
pump
to
the
suction
and
liquid
line
gauge
ports.
2.
\f
the
evacuation
is
being
performed
on
a
new
system
installation,
the
valves
should
be
kept
in
the
"front
seated”
(closed)
position.
This
will
allow
the
mechanic
to
evacuate
the
refrigeration
lines
and
the
indoor
coil,
without
disturbing
the
factory
charge
in
the
outdoor
unit.
3.
Follow
the
vacuum
pump
manufacturer’s
instructions.
Allow
the
pump
to
operate
until
the
system
has
been
eva-
cuated
down
to
300
microns.
Allow
the
pump
to
continue
running
for
an
additional
15
minutes.
Turn
offthe
pump
and
leave
the
connections
secured
to
the
two
service
valves.
After
5
minutes,
if
the
system
fails
to
hold
500
microns
or
less,
check
all
connections
for
tight
fit
and
repeat
the
evac-
uation
procedure.
4.
lsolate
the
vacuum
pump
from
the
system
by
closing
the
shutoff
valves
on
the
gauge
bar.
Disconnect
the
vacuum
pump.
Valve
Actuation:
Service
Valves
Remove
the
service
valve
cap,
if
there
is
a
male
valve
stem
see
instructions
for
Ball
Valves.
For
the
standard
service
valve
there
are
two
variations,
but
both
have
internal
stems.
The
first
style
uses
an
internal
snap
ring
to
retain
the
valve
stem
and
the
second
has
a
rolled
top
and
also
has
finer
threads
on
the
valve
cap.
NOTE:
You
may
encounter
more
than
one
type
of
valve
on
a
unit.
For
service
valves
fully
insert
a
hex
wrench
into
the
stem.
A
back-up
wrench
is
required
on
the
valve
body
to
open
the
valve stem.
Backout
counterclockwise
until
the
valve
stem
stops
or
just
touches
the
retaining
ring.
NOTE:
THIS
IS
NOT
A
BACKSEATING
VALVE.
For
valves
with
retainer
rings
care
must
be
taken
to
prevent
dislodging
them
when
opening
valve.
The
service
valve
cap
is
a
primary
seal
for
the
valve
and
must
be
properly
tightened
to
preventleaks.
Make
sure
cap
is
clean
and apply
refrigerant
oil
to
threads
and
sealing
sur-
face
of
cap.
For
valves
with
retaining
rings:
Replace
service
valve
cap
and
torque
to;
8-11
ft.
lbs.
on
1/4”
and
3/8”
valves,
12-16
ft.
lbs.
on
§/8”
and
3/4”,
15-21
ft.
Ibs
on
7/8”
valves.
If
torque
wrench
is
not
available,
tighten
cap
finger
tight
and
then
tighten
one
(1)
additional
wrench
flat
or
1/6
of
a
turn.
For
valves
with
rolled
tops:
Replace
service
valve
cap
tighten
cap
finger
tight
and
then
tighten
one
(1)
additional
wrench
flat
or
1/6
of
a
turn
to
properly
seat
the
sealing
sur-
faces.
Subsequent
installations
will
seat
with
1/2
to
1
wrench
flat
of
turning.
Le