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Fig. 21 - Wiring Layout DEHUM Option for Heat Pump Unit
BLOWER
MODEL & SIZE
SPEED
Tap 5
Tap 4
FZ4A 024
Tap 3
Tap 2
Tap 1
Tap 5
Tap 4
FZ4A 036
Tap 3
Tap 2
Tap 1
Tap 5
Tap 4
FZ4A 048
Tap 3
Tap 2
Tap 1
Tap 5
Tap 4
FZ4A 060
Tap 3
Tap 2
Tap 1
Tap 5
Tap 4
FZ4A 061
Tap 3
Tap 2
Tap 1
NOTES:
1. Airflow based upon dry coil at 230v with factory- approved filter and electric heater (2 element heater sizes 024 through 036, 3 element
heater sizes 048 through 061). For FZ4A models, airflow at 208 volts is approximately the same as 230 volts because the multi- tap ECM
motor is a constant torque motor. The torque doesn't drop off at the speeds the motor operates.
2. To avoid potential for condensate blowing out of drain pan prior to making drain trap:
Return static pressure must be less than 0.40 in. wc.
Horizontal applications of 048 - 061 sizes must have supply static greater than 0.20 in. wc.
3. Airflow above 400 cfm/ton on 048- 061 size could result in condensate blowing off coil or splashing out of drain pan.
A160013
Table 2 – FZ4A Airflow Performance (CFM)
0.10
0.20
969
936
826
795
755
736
573
541
573
541
1301
1276
1227
1191
1209
1190
792
753
547
485
1743
1712
1669
1634
1496
1454
1112
1066
822
764
1897
1867
1817
1785
1878
1848
1445
1403
1086
1026
2030
1995
1811
1775
1671
1666
1350
1332
1188
1063
START- UP PROCEDURES
Refer to outdoor unit Installation Instructions for system start- up
instructions and refrigerant charging method details.
CAUTION
!
UNIT COMPONENT HAZARD
Failure to follow this caution may result in product damage.
Never operate unit without a filter. Damage to blower motor
or coil may result. Factory authorized filter kits must be used
when locating the filter inside the unit. For those applications
where access to an internal filter is impractical, a
field- supplied filter must be installed in the return duct
system.
CARE AND MAINTENANCE
To continue high performance and minimize possible equipment
failure, it is essential that periodic maintenance be performed on
this equipment. Consult your local dealer as to the proper
frequency of maintenance contract.
The ability to properly perform maintenance on this equipment
requires certain mechanical skills and tools. If you do not possess
these, contact your dealer for maintenance. The only consumer
service recommended or required is filter replacement or cleaning
on a monthly basis.
0.30
0.40
892
835
766
743
711
679
507
471
507
471
1245
1218
1169
1143
1166
1136
710
665
429
380
1679
1642
1599
1564
1415
1378
1021
978
702
634
1836
1808
1757
1724
1816
1782
1360
1316
963
895
1961
1927
1740
1703
1654
1634
1309
1280
949
846
9
0.50
0.60
763
676
706
660
639
593
434
394
434
394
1176
1121
1105
1074
1100
1059
616
564
337
302
1610
1574
1531
1499
1344
1312
937
897
562
485
1774
1736
1693
1655
1747
1711
1271
1225
822
746
1888
1842
1664
1613
1607
1573
1245
1206
753
670
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