18-BC105D1-1D-EN
23
Subcool Charging Correction Charts
Important:
VARIABLE SPEED OUTDOOR UNITS REQUIRE THE INDOOR
UNIT BE CONFIGURED FOR 400 CFM/TON IN clii MODE
ONLY.
Note:
System will auto configure airflow in Link mode.
Figure 3. Subcool Charging Corrections — 2.0 Ton
2.0 TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
TOTAL REFRIGERANT LINE LENGTH (FEET)
Add 1°
Add 1°
Use Design Subcooling
Add 2°
70
80
90
100
110
120
130
140
150
60
50
40
30
20
50
40
30
25
15
10
0
R
E
F
R
IG
E
R
A
N
T
L
IN
E
L
IF
T
(
F
E
E
T
)
Figure 4. Subcool Charging Corrections — 3.0 Ton
3.0 TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
TOTAL REFRIGERANT LINE LENGTH (FEET)
Add 1°
Add 1°
Use Design Subcooling
Add 2°
70
80
90
100
110
120
130
140
150
60
50
40
30
20
50
40
30
25
15
10
0
R
E
F
R
IG
E
R
A
N
T
LI
N
E
L
IF
T
(
F
E
E
T
)
Figure 5. Subcool Charging Corrections — 4.0 Ton
4.0 TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
TOTAL REFRIGERANT LINE LENGTH (FEET)
Add 1°
1°
1°
1°
Add 1°
Use Design Subcooling
Add 2°
70
80
90
100
110
120
130
140
150
60
50
40
30
20
50
40
30
25
15
10
0
R
E
F
R
IG
E
R
A
N
T
LI
N
E
L
IF
T
(
F
E
E
T
)
Figure 6.
Subcool Charging Corrections —5.0 Ton
5.0 TON SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
NOTE: 150 ft. length is approved ONLY with 7/8” vapor lines.
1°
1°
TOTAL REFRIGERANT LINE LENGTH (FEET)
Add 1°
Add 1°
Add 1°
Use Design Subcooling
Add
2°
Add 4°
70
80
90
100
110
120
130
140
150
60
50
40
30
20
50
40
30
25
15
10
0
R
E
F
R
IG
E
R
A
N
T
L
IN
E
L
IF
T
(F
E
E
T
)
AC: 1-1/8” Vapor Line Limit