If defrost thermostat is closed, speedup pins (J1) must be shorted
by placing a flat head screw driver in between for 5 sec and
releasing, to observe a complete defrost cycle. When the Quiet
Shift switch is selected, compressor will be turned off for two 30
sec intervals during this complete defrost cycle, as explained
previously. When Quiet Shift switch is in factory default OFF
position, a normal and complete defrost cycle will be observed.
If defrost thermostat is in open position, and speedup pins are
shorted (with a flat head screw driver) for 5 sec and released,a
short defrost cycle will be observed (actual length is dependent
upon the selected Quiet Shift position). When Quiet Shift switch is
in ON position, the length of defrost is 1 minute (30 sec
compressor off period followed by 30 sec of defrost with com-
pressor operation). On return to heating operation, compressor will
Table 4A—50XZ Cooling & Heating Dry Coil ECM Airflow
Small Cabinet
UNIT
SIZE
CFM ADJUST
PIN SELECT
LO PIN NOM PIN HI PIN
EXTERNAL STATIC
PRESSURE RANGE
0.0–0.39 0.4–0.69 0.7–1.0 0.0–0.39 0.4–0.69 0.7–1.0 0.0–0.39 0.4–0.69 0.7–1.0
024
COOLING † 800 725 – 885 805 730 990 930 855
COOLING
DEHUMIDIFY
715 670 – 715 695 645 795 775 745
HEAT PUMP
COMFORT
720 660 – 790 745 685 890 850 785
030
COOLING † 1010 920 825 1105 1030 930 1255 1160 1050
COOLING
DEHUMIDIFY
890 845 795 890 865 825 1010 980 925
HEAT PUMP
COMFORT
945 850 765 1020 965 895 1140 1105 995
036
COOLING † 1110 1025 970 1235 1175 1115 1400 1355 1280
COOLING
DEHUMIDIFY
990 960 910 990 975 940 1125 1110 1085
HEAT PUMP
COMFORT
1035 975 910 1160 1080 1020 1305 1275 1220
†
Heat Pump Efficiency
and
Cooling
pin selections deliver equal airflow
Table 4B—50XZ Cooling & Heating Dry Coil ECM Airflow
Large Cabinet
UNIT
SIZE
CFM ADJUST
PIN SELECT
LO PIN NOM PIN HI PIN
EXTERNAL STATIC
PRESSURE RANGE
0.1–1.0 0.1–1.0 0.1–1.0
042
COOLING † 1100 1225 1410
COOLING
DEHUMIDIFY
980 980 1125
HEAT PUMP
COMFORT
990 1100 1265
048
COOLING † 1260 1400 1610
COOLING
DEHUMIDIFY
1120 1120 1290
HEAT PUMP
COMFORT
1135 1260 1450
060
COOLING † 1575 1750 2010
COOLING
DEHUMIDIFY
1400 1400 1610
HEAT PUMP
COMFORT
1415 1575 1810
†
Heat Pump Efficiency
and
Cooling
pin selections deliver equal airflow
Table 4C—ECM WET COIL PRESSURE DROP (in. wg)
UNIT
SIZE
STANDARD CFM (SCFM)
600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100
024 0.005 0.007 0.010 0.012 0.015 –––––––––––
030 – 0.007 0.010 0.012 0.015 0.018 0.021 0.024 ––––––––
036 – – – 0.019 0.023 0.027 0.032 0.037 0.042 0.047 ––––––
042 ––––0.014 0.017 0.020 0.024 0.027 0.031 0.035 0.039 0.043 – – –
048 ––––––0.027 0.032 0.036 0.041 0.046 0.052 0.057 0.063 0.068 –
060 –––––––––0.029 0.032 0.036 0.040 0.045 0.049 0.053
21
To Next Page
Loading...
