Instruction manual
is a 3/8-in. OD stub tube approximately 3 in. long (See Fig. 40).
The defrost thermostat should be located on this stub tube. Note
that there is only 1 stub tube used with liquid header, and on most
units it is the bottom circuit.
XIV. DEFROST THERMOSTAT
Defrost thermostat signals heat pump that conditions are right for
defrost or that conditions have changed to terminate defrost. It is
a thermally actuated switch clamped to outdoor coil to sense its
temperature. Normal temperature range is closed at 30° +/- 3°F
and open at 80° +/- 5°F.
NOTE: The defrost thermostat must be located on the liquid side
of the outdoor coil on the bottom circuit and as close to the coil as
possible.
SUCTION LINE PRESSURE (KILOPASCALS)
SUCTION LINE PRESSURE (PSIG)
-7 -1 4 10 16 21 27
SUCTION LINE TEMPERATURE (°F)
SUCTION LINE TEMPERATURE (°C)
689
620
551
483
414
345
276
207
100
90
80
70
60
50
40
30
(042) 60HZ CHARGING CHART
20.0 30.0 40.0 50.0 60.0 70.0 80.0
OUTDOOR TEMP
° F ° C
115 46
125 52
45 7
55 13
65 18
75 24
95 35
105 41
85 29
50JS500091
C00030
Fig. 30—Cooling Charging Chart, 601A 042 Units
SUCTION LINE PRESSURE (KILOPASCALS)
SUCTION LINE PRESSURE (PSIG)
-7 -1 4 10 16 21 27
SUCTION LINE TEMPERATURE (°F)
SUCTION LINE TEMPERATURE (°C)
689
620
551
483
414
345
276
207
100
90
80
70
60
50
40
30
(060) 60HZ CHARGING CHART
20.0 30.0 40.0 50.0 60.0 70.0 80.0
OUTDOOR TEMP
° F ° C
115 46
125 52
45 7
55 13
65 18
75 24
95 35
105 41
85 29
50JS500093
C00032
Fig. 32—Cooling Charging Chart, 601A 060 Units
SUCTION LINE PRESSURE (KILOPASCALS)
SUCTION LINE PRESSURE (PSIG)
-7 -1 4 10 16 21 27
SUCTION LINE TEMPERATURE (°F)
SUCTION LINE TEMPERATURE (°C)
689
620
551
483
414
345
276
207
100
90
80
70
60
50
40
30
(048) 60HZ CHARGING CHART
20.0 30.0 40.0 50.0 60.0 70.0 80.0
OUTDOOR TEMP
° F ° C
115 46
125 52
45 7
55 13
65 18
75 24
95 35
105 41
85 29
50JS500092
C00031
Fig. 31—Cooling Charging Chart, 601A 048 Units
TABLE 9—FILTER PRESSURE DROP (IN. WG)
FILTER SIZE
CFM
500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300
20X20X1 0.05 0.07 0.08 0.10 0.12 0.13 0.14 0.15 ———————————
20X24X1 ————0.09 0.10 0.11 0.13 0.14 0.15 0.16 ————————
24X30X1 —————— —0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18
—24—