![background image](http://html.mh-extra.com/html/carrier/38apd115/38apd115_manual_2560531045.webp)
45
90
100
110
120
130
50
40
E
A
T
LIQ
UID
VA
LVE
(DEG
C)
E
A
T
LIQ
UID
VA
LVE
(DEG
F)
ADD CHARGE IF ABOVE CURVE
50 SST
30 SST
40 SST
60
70
80
90
100
110
120
130
200
250
300
350
400
450
500
550
600
LIQUID PRESSURE AT LIQUID VALVE (PSIG)
Single Circuit
1500
2000
2500
3000
3500
4000
LIQUID PRESSURE AT LIQUID VALVE (kPag)
50
40
30
20
LIQ
UID
T
E
M
P
ERA
T
URE A
T
LIQ
UID
VA
LVE
(DEG
C)
LIQ
UID
T
E
M
P
ERA
T
URE A
T
LIQ
UID
VA
LVE
(DEG
F)
ADD CHARGE IF ABOVE CURVE
REDUCE CHARGE IF BELOW CURVE
50 SST
30 SST
40 SST
Fig. 55 — Charging Chart — 38APS030, 50/60 Hz
NOTE: Charging procedures for MCHX units require very accurate measurement techniques. Charge should be added in small increments. Using cooling
charging charts provided, add or remove refrigerant until conditions of the chart are met. As conditions get close to the point on the chart, add or remove charge in
1/4 lb (0.11 kg) increments until complete. Ensure that all fans are on and all compressors are running when using charging charts.
LEGEND
SST —
Saturated Suction Temperature
a38-7174
90
100
110
120
130
50
40
E
A
T
LIQUID
VA
LVE
(D
EG
C)
E
A
T
LIQUID
VA
LVE
(D
EG
F)
ADD CHARGE IF ABOVE CURVE
50 SST
40 SST
30 SST
60
70
80
90
100
110
120
130
200
250
300
350
400
450
500
550
600
LIQUID PRESSURE AT LIQUID VALVE (PSIG)
Circuit A
1500
2000
2500
3000
3500
4000
LIQUID PRESSURE AT LIQUID VALVE (kPag)
50
40
30
20
LIQUID
TEMPERA
TURE A
T
LIQUID
VA
LVE
(DEG
C)
LIQUID TEM
PERA
TURE
A
T
LIQUID
VA
LVE
(D
EG
F)
ADD CHARGE IF ABOVE CURVE
REDUCE CHARGE IF BELOW CURVE
50 SST
40 SST
30 SST
Fig. 56 — Charging Chart — 38APD040 — Circuit A, 50/60 Hz
NOTE: Charging procedures for MCHX units require very accurate measurement techniques. Charge should be added in small increments. Using cooling
charging charts provided, add or remove refrigerant until conditions of the chart are met. As conditions get close to the point on the chart, add or remove charge in
1/4 lb (0.11 kg) increments until complete. Ensure that all fans are on and all compressors are running when using charging charts.
LEGEND
SST —
Saturated Suction Temperature
a38-7175