661693-UIM-E-1212
12
Johnson Controls Unitary Products
SECTION IX: MAINTENANCE
Filters must be cleaned or replaced when they become dirty. Inspect at
least once per month. The frequency of cleaning depends upon the
hours of operation and the local atmospheric conditions. Clean filters
keep unit efficiency high.
COIL CLEANING
If the coil needs to be cleaned, it should be wash with a evaportor coil
cleaner. Follow directions from coil cleaner.
LUBRICATION
The bearings of the blower motor are permanently lubricated.
CONDENSATE DRAINS
During the cooling season check the condensate drain lines to be sure
that condensate is flowing from the primary drain but not from the sec-
ondary drain. If condensate ever flows from the secondary drain the unit
should be promptly shut off and the condensate pan and drains cleaned
to insure a free flowing primary drain.
Models
Blower
Motor Speed
External Static Pressure (in. wc.)
0.10
0.20
0.30
0.40
0.50
0.60
0.70
AHR48D3XH21
High
1890
1830
1755
1650
1565
1450
1285
Medium
1515
1480
1450
1380
1295
1115
985
Low
1170
1165
1140
1100
965
860
745
AHR60D3XH21
High
1911
1841
1757
1668
1564
1439
1233
Medium
1556
1507
1450
1388
1266
1246
989
Low
1211
1181
1151
1062
992
911
827
230 Volt
AHR18B3XH21
High
1145
1100
1055
1005
930
845
725
Medium
755
750
725
665
605
485
435
Low
680
655
625
585
540
395
300
AHR24B3XH21
High
1305
1285
1225
1175
920
915
835
Medium
930
920
890
845
705
760
505
Low
735
730
700
670
545
470
NA
AHR30B3XH21
High
1450
1380
1300
1215
1130
1030
910
Medium
1330
1280
1205
1135
1050
975
780
Low
1160
1120
1065
1005
930
825
635
AHR36B3XH21
High
1470
1390
1325
1245
1155
1045
880
Medium
1325
1265
1205
1125
1025
965
840
Low
1115
1075
1025
950
NA
NA
NA
AHR42C3XH21
High
1750
1670
1570
1477
1260
1125
935
Medium
1590
1520
1435
1277
1150
1010
870
Low
1330
1280
1200
1083
980
850
NA
AHR48D3XH21
High
2005
1940
1850
1755
1650
1530
1405
Medium
1705
1665
1605
1510
1425
1340
1185
Low
1355
1330
1300
1245
1170
990
980
AHR60D3XH21
High
2034
1955
1858
1753
1640
1522
1296
Medium
1733
1672
1609
1527
1431
1272
1220
Low
1388
1359
1313
1255
1133
1004
912
1. Air handler units have been tested to UL 1995 / CSA 22.2 standards up to 0.30" wc. external static pressure.
Dry coil conditions only, tested without filters.
For optimal performance, external static pressures of 0.2" to 0.5" are recommended. Applications above 0.6" are not recommended.
Airflow data shown is from testing performed at 230V. AHE units use a X13 motor, and there is minimal variation of airflow at other distribution voltage values. The
above data can be used for airflow at other distribution voltages.
TABLE 10:
AIR FLOW DATA (CFM)
1
Summary of Contents for 41HP AHR18B
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