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Table 2:
Airflow data (CFM)
Blower
Models
motor speed
0.1
0.2
High (5)
975
925
Medium high (4)
900
850
B18B
Medium (3)
825
775
Medium low (2)
650
600
Low (1)
450
-
High (5)
1150
1125
Medium high (4)
1000
950
B24C
Medium (3)
775
725
Medium low (2)
675
600
Low (1)
525
450
High (5)
1150
1125
Medium high (4)
1000
950
B30D
Medium (3)
775
725
Medium low (2)
650
600
Low (1)
575
525
High (5)
1500
1475
Medium high (4)
1325
1300
B36D
Medium (3)
975
950
Medium low (2)
925
875
Low (1)
650
600
High (5)
1600
1575
Medium high (4)
1400
1375
C36D
Medium (3)
1100
1050
Medium low (2)
950
900
Low (1)
725
650
High (5)
1525
1500
Medium high (4)
1375
1325
C42F
Medium (3)
1050
1000
Medium low (2)
925
875
Low (1)
700
625
High (5)
1925
1900
Medium high (4)
1750
1700
C48G
Medium (3)
1400
1350
Medium low (2)
1200
1150
Low (1)
925
875
High (5)
2050
2000
Medium high (4)
1850
1800
D48G
Medium (3)
1625
1600
Medium low (2)
1275
1200
Low (1)
1000
925
High (5)
1925
1900
Medium high (4)
1750
1725
C60H
Medium (3)
1375
1350
Medium low (2)
1200
1150
Low (1)
950
900
High (5)
1925
1900
Medium high (4)
1775
1750
D60H
Medium (3)
1450
1400
Medium low (2)
1225
1175
Low (1)
975
900
Continued on next page
External static pressure (in. W.C.)
0.3
0.4
0.5
0.6
0.7
0.8
0.9
875
825
800
750
700
650
600
800
775
725
675
625
575
525
725
700
650
600
550
500
450
550
500
425
-
-
-
-
-
-
-
-
-
1100
1050
1025
975
950
900
875
925
875
825
775
750
700
650
675
625
575
525
450
400
550
500
425
-
-
-
-
-
-
-
-
-
1075
1050
1025
975
950
925
875
900
875
825
800
750
700
675
700
650
600
550
500
450
400
550
500
450
400
-
-
475
400
-
-
-
-
1450
1425
1425
1400
1375
1350
1325
1275
1250
1225
1200
1175
1150
1125
900
875
825
800
750
700
675
825
800
750
700
675
625
575
550
500
450
400
-
-
1525
1500
1450
1425
1400
1350
1325
1325
1275
1225
1200
1150
1100
1075
1000
950
900
850
800
725
675
825
775
725
650
600
550
475
575
525
450
375
-
-
1450
1425
1375
1350
1300
1275
1225
1300
1250
1200
1150
1125
1075
1025
950
900
850
775
725
675
625
800
750
700
625
575
525
450
575
500
425
-
-
-
1875
1850
1800
1775
1750
1725
1700
1675
1650
1600
1575
1550
1500
1475
1300
1275
1225
1175
1125
1075
1050
1100
1050
1000
925
875
825
775
800
750
700
625
575
500
450
1975
1950
1900
1875
1850
1800
1775
1775
1725
1700
1650
1625
1575
1550
1550
1500
1450
1425
1375
1325
1275
1150
1100
1050
975
925
875
825
875
800
750
675
600
550
475
1875
1850
1825
1775
1750
1725
1700
1675
1650
1625
1575
1550
1525
1475
1300
1250
1225
1175
1125
1100
1050
1100
1050
1000
950
900
850
800
825
775
725
650
600
550
475
1875
1825
1800
1775
1750
1700
1675
1725
1675
1650
1600
1575
1525
1500
1325
1275
1225
1175
1125
1075
1025
1125
1050
1000
950
875
825
775
850
775
700
625
550
475
425
Table 2:
Airflow data (CFM) (continued)
Models
1.0
550
500
D60J
400
-
-
-
-
Notes:
850
1.
No electric heat installed
600
2.
Air handler units are tested to UL60335-2-40 standards up to 0.6 in. W.C. external static pressure.
-
-
3.
Dry coil conditions only; tested without filters
-
-
4.
For optimal performance, external static pressures of 0.2 in. W.C. to 0.5 in. W.C. are recommended. Heating applications are tested at 0.5 in. W.C. external static pressure.
5.
Airflow data shown is from testing performed at 230 V. JHET units use a standard ECM constant torque 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.
850
Clearances
625
-
It is essential to provide the following clearances:
-
-
1. Refrigerant piping and connections - minimum 12 in.
-
-
2. Maintenance and servicing access - minimum 36 in. from the front of
-
the unit for blower motor or coil replacement
3. Condensate drain lines routed to clear filter and panel access
1100
4. Filter removal - minimum 36 in.
625
5. The supply air ductwork connected to this unit is designed for 1 in.
550
clearance for the first 18 in. of combustible materials if an electric heat
-
-
kit accessory is installed.
1275
6. A combustible floor base accessory is available for downflow applica-
1025
tions of this unit, if required by local code.
625
External duct static
425
-
-
Measure the supply air static pressure. Record this positive number.
Measure the return air static pressure. Record this negative number.
1200
Treat the negative number as a positive and add the two numbers
975
together to determine the total external system static pressure. If a filter
575
rack is installed on the return air end of the air handler or indoor coil
400
section, make sure to measure the return air duct static between the filter
-
-
and the indoor coil.
1675
1450
Table 3:
Electrical heat - minimum fan speed
1000
725
Nominal
Heater kit
375
1,2
models
at 240 V
1750
1500
8HK(0,1)6500206
1250
750
8HK(0,1)6500506
400
8HK(0,1)6500806
1675
1450
8HK(0,1)6501006
1000
8HK06501025
750
8HK(1,2)6501506
425
8HK06501525
1650
8HK(1,2)6502006
8HK16502025
1450
8HK(1,2)6502506
975
8HK16502525
700
-
1. (0,1) - 0 = no service disconnect or 1 = with service disconnect
2. (1,2) - 1 = with service disconnect, no breaker jumper bar or 2 = with service disconnect and breaker jumper bar
External static pressure (in. W.C.)
Blower
motor speed
0.1
0.2
0.3
0.4
High (5)
2100
2075
2050
2025
Medium high (4)
1925
1900
1875
1825
Medium (3)
1750
1725
1675
1650
Medium low (2)
1350
1275
1225
1175
Low (1)
1200
1150
1100
1025
Figure 2:
Air handler models
kW
B18B
B24C
B30D
B36D
C36D
Medium
Medium
Medium
Medium
Medium
2.4
Low (2)
(3)
High (4)
(3)
(3)
Medium
Medium
Medium
Medium
Medium
4.8
(3)
(3)
High (4)
(3)
(3)
Medium
Medium
Medium
Medium
Medium
7.7
High (4)
High (4)
High (4)
High (4)
High (4)
Medium
Medium
Medium
Medium
Medium
9.6
High (4)
High (4)
High (4)
High (4)
High (4)
Medium
Medium
Medium
14.4
-
High (5)
High (4)
High (4)
High (4)
Medium
19.2
-
-
High (5)
High (5)
High (4)
24
-
-
-
-
-
0.5
0.6
0.7
0.8
0.9
1.0
2000
1975
1925
1900
1875
1850
1800
1775
1725
1700
1675
1650
1600
1575
1525
1500
1450
1425
1125
1075
1025
975
925
875
975
925
850
800
750
675
Take measurements here if using
a filter rack.
Return air static must be taken
between the filter and indoor coil.
A1704-001
Duct static measurements
C42F
C48G
D48G
C60H
D60H
D60J
Medium
Medium
Medium
Medium
Medium
Medium
(3)
Low (2)
Low (2)
Low (2)
Low (2)
Low (2)
Medium
Medium
Medium
Medium
Medium
Medium
(3)
Low (2)
Low (2)
Low (2)
Low (2)
Low (2)
Medium
Medium
Medium
Medium
Medium
Medium
High (4)
(3)
(3)
(3)
(3)
Low (2)
Medium
Medium
Medium
Medium
Medium
Medium
High (4)
(3)
(3)
High (4)
(3)
Low (2)
Medium
Medium
Medium
Medium
Medium
Medium
High (4)
(3)
(3)
High (4)
High (4)
(3)
Medium
Medium
Medium
Medium
Medium
High (5)
High (4)
(3)
High (4)
High (4)
(3)
Medium
Medium
-
-
-
-
High (4)
(3)
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