SYSTEM CHARGE ADJUSTMENT
16
charging
:
weigh
-
In
Method
weigh
-
In
Method
can
be
used
for
the
Initial
installation
,
or
anytime
a
system
charge
is
being
replaced
.
weigh
-
In
Method
can
also
be
used
when
power
is
not
available
to
the
equipment
site
or
operating
conditions
(
indoor
/
Outdoor
tempera
-
tures
)
are
not
In
range
to
verify
with
the
subcooling
charging
method
.
Note
:
The
only
mode
aperoved
for
setting
validating
system
charge
Is
using
Charging
Mode
-
cooling
.
Outdoor
Temperature
must
be
between
55
O
F
and
120
O
F
with
Indoor
Temperature
kept
between
70
O
F
and
80
O
F
.
C
A
Model
charge
multiplier
for
interconnecting
refrigerant
tube
length
0
.
6
oz
/
ft
Factory
(
The
data
on
nameplate
)
Charge
B
Table
19
.
New
Installations
—
calculating
charge
using
the
weigh
-
In
method
1
.
Measure
in
feet
the
distance
between
the
outdoor
unit
and
the
indoor
unit
and
record
on
(
Line
1
).
Include
the
entire
length
of
the
line
from
the
servIce
valve
to
the
IDU
.
2
.
Enter
the
charge
multiplier
from
column
C
.
3
.
Muitply
the
total
length
of
refrigerant
tubing
(
Line
1
)
tImes
the
value
on
step
2
.
Record
the
resulting
value
.
4
.
This
Is
the
amount
of
refrigerant
to
weigh
-
in
prior
to
opening
the
service
valves
.
New
Installation
weigh
-
In
Method
woriksheeto
1
.
Line
Length
(
ft
)
2
.
value
from
Column
C
x
3
.
Refrigerant
((
Step1
-
15
)
x
Step2
) =
Table
20
.
Sealed
-
System
Repairs
—
calculating
charge
using
the
weigh
-
In
method
.
1
.
Measure
in
feet
the
distance
between
the
outdoor
unit
and
the
indoor
unit
and
record
on
(
Line
1
).
Include
the
entire
length
of
the
line
from
the
service
valve
to
the
IDU
.
2
.
Enter
the
charge
multiplIer
from
cotumn
C
.
3
.
MultIply
the
total
length
of
refhgerant
tubing
(
Line
1
)
times
the
value
on
(
Line
2
).
Record
the
result
on
(
Line
3
)
of
the
worksheet
.
4
.
Record
the
value
in
column
B
to
Line
4
of
the
worksheet
.
5
.
Add
the
values
from
step
3
,
step
4
,
and
record
the
resulting
value
on
Line
5
.
ThIs
is
the
amount
of
refrigerant
to
weigh
-
in
.
New
Installation
weigh
-
In
Method
worksheet
1
.
Line
Length
(
ft
)
2
.
value
from
Column
C
x
3
. (
Step1
-
15
)
x
step
2
=
4
.
Factory
charge
(
column
B
) +
5
.
RefrIgerant
(
steps
3
+
4
) =
All
models
Note
:
The
factory
charge
in
the
outdoor
unit
is
sufficient
for
15
feet
of
standard
size
interconnecting
liquid
line
.
Note
:
If
line
length
is
Less
than
15
feet
,
Refrigerant
=
0
,
don
’
t
charge
.
Note
:
If
line
length
is
Less
than
15
feet
,
Refrigerant
=
factory
charge
Summary of Contents for 18S-EHVC24WD2V
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