18
18-AC125D1-1A-EN
Design Subcooling Value = __________º F
(from nameplate or Service Facts)
Subcooling Correction = __________º F
Final Subcooling Value = __________º F
STEP 2
- Determine the final subcooling value using total Line Length and Lift measured in STEP 1 and the charts below.
STEP 3
- Stabilize the system by operating for a
minimum of 20 minutes.
At startup, or whenever charge is removed or
added, the system must be operated for a mini-
mum of 20 minutes to stabilize before accurate
measurements can be made.
20 MIN.
2 Ton Units
50
1°
40
30
25
Use Design Subcooling
15
10
0
20 30 40 50 60 70 80 90 100 110 120 130 140 150
Add 1°
Add 1°
TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ]
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
Add 2°
RE
FR
IGE
RANT
LI
NE
LI
FT (FT)
4 Ton Units
50
1°
40
1°
30
25
Use Design Subcooling
15
10
0
20 30 40 50 60 70 80 90 100 110 120 130 140 150
RE
FR
IGE
RANT
LI
NE
LI
FT (FT)
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
Add 4°
TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ]
Add 2°
Add 1°
Add 1°
5 Ton Units
50
1°
40
1°
30
25
Use Design Subcooling
15
10
0
1°
20 30 40 50 60 70 80 90 100 110 120 130 140 150
Add 4°
Add 2°
Add 1°
Add 1°
RE
FR
IGE
RANT
LI
NE
LI
FT (FT)
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ]
3 Ton Units
50
4°
40
30
25
Use Design Subcooling
15
1°
10
0
20 30 40 50 60 70 80 90 100 110 120 130 140 150
Add 1°
Add 2°
RE
FR
IGE
RANT
LI
NE
LI
FT (FT)
SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE)
TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ]
Add 1°
Summary of Contents for 4TTX7
Page 25: ...18 AC125D1 1A EN 25 Section 17 Wiring Diagrams 2 3 Ton Units...
Page 26: ...26 18 AC125D1 1A EN PRINTED FROM D157615P04 REV A 2 3 Ton Units...
Page 27: ...18 AC125D1 1A EN 27 4 Ton Units...
Page 28: ...28 18 AC125D1 1A EN 4 Ton Units...
Page 29: ...18 AC125D1 1A EN 29 5 Ton Units...
