20
Table 3 –
604D Cooling & Heating Dry Coil ECM Airflow
Small Cabinet
UNIT
SIZE
CFM ADJUST PIN
SELECT
LO PIN
NOM PIN
HI PIN
EXTERNAL STATIC
PRESSURE RANGE
(in. wc)
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 4 –
604D Cooling & Heating Dry Coil ECM Airflow
Large Cabinet
UNIT SIZE
CFM ADJUST PIN SELECT
LO PIN
NOM PIN
HI PIN
EXTERNAL STATIC
PRESSURE RANGE (in. wc)
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 5 –
ECM Wet coil Pressure Drop (in. wc)
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
again turn off for an additional 30 sec and the outdoor fan for 40
sec. When the Quiet Shift is in OFF position, only a brief 30 sec.
cycle will be observed.
If it is desirable to observe a complete defrost in warmer weather,
the defrost thermostat must be closed as follows.
1. Turn off power to outdoor unit.
2. Disconnect outdoor fan motor lead from OF2 on control
board. (See Fig. 26) Tape to prevent grounding.
3. Restart unit in Heating mode, allowing frost to accumulate
on outdoor coil.
4. After a few minutes in Heating mode, liquid line
temperature should drop below closing point of defrost
thermostat (approximately 30
_
F) (--1
_
C).
NOTE
: Unit will remain in defrost until defrost thermostat
reopens at approximately 80
_
F (27
_
C) coil temperature at liquid
line or remainder of defrost cycle time.
5. Turn off power to outdoor and reconnect fan motor lead to
OF2 on control board after above forced defrost cycle.
MAINTENANCE
To ensure continuing high performance, and to minimize the
possibility of premature equipment failure, periodic maintenance
must be performed on this equipment. This heat pump unit
should be inspected at least once each year by a qualified service
person. To troubleshoot unit, refer to Table 8.
NOTE
: TO EQUIPMENT OWNER: Consult your local dealer
about the availability of a maintenance contract.
PERSONAL INJURY AND UNIT DAMAGE HAZARD
Failure to follow this warning could result in personal injury
or death and unit component damage.
The ability to properly perform maintenance on this
equipment requires certain expertise, mechanical skills, tools
and equipment. If you do not possess these, do not attempt to
perform any maintenance on this equipment, other than those
procedures recommended in the Owner’s Manual.
!
WARNING
604D