7. Permanently stamp the unit nameplate with the total system charge, which is defined as
follows: total system charge = base charge (as shipped) + charge adder for matched indoor
unit + charge adder for actual lineset charge adjustments to match the charging
chart.
System capacity
Table 5: System capacity - single piece and modular air handlers
Air handler
Cooling
Heating
Net MBH
Net MBH
COP
Unit model
Model
Width
Coil
model Rated
Total Sens.
SEER EER
47°F
OD
17°F
OD
HSPF
HSPF
region
V
47°F
OD
17°F
OD
HMH72B241S AE36CX21 21.0
-
850
22.2
17.0
17.50 10.00 22.0
14.7
9.00
7.60
3.36
2.54
HMH72B361S AE36CX21 21.0
-
1200 36.0
26.5
18.00 10.00 36.8
25.4
10.50 8.75
3.40
2.74
HMH72B481S AE60DX21 24.5
-
1500 48.0
34.3
18.00 10.50 46.0
32.8
9.50
8.00
3.34
2.72
HMH72B601S AE60DX21 24.5
-
1700 58.5
20.7
17.00 8.50
56.5
40.0
10.00 8.45
3.24
2.74
Note:
• Rated in accordance with DOE test procedures (Federal Register 12-27-79 and 3-18-88)
and ANSI/AHRI Standard 210/240.
• Cooling MBH is based on 80°F entering air temperature, 50% RH (relative humidity), and
rated airflow.
EER (energy efficiency ratio) is the total cooling output in BTUs at 95°F outdoor ambient
divided by the total electric power in watt-hours at those conditions.
SEER (seasonal energy efficiency ratio) is the total cooling output in Btu during a normal
annual usage period for cooling divided by the total electric power input in watt-hours
during the same period.
• Heating MBH is based on AHRI standards of 70°F DB (dry bulb) entering indoor air,
72% RH (relative humidity) outdoor air with 25 ft of interconnecting piping and no
supplemental electric heat operation.
HSPF (heating seasonal performance factor) is the total heating output during a normal
annual usage period for heating divided by the total electric power input during the same
period.
COP (coefficient of performance) equals heating MBH output divided by (total kW input x
3.412).
Applications and accessories
Table 6: Minimum and maximum operating limit conditions
Outdoor coil °F (°C)
Ambient temperature limits
DB cool
DB heat
Minimum
35 (2)
-5 (-21)
Maximum
122 (50)
75 (24)
Note:
The maximum lineset equivalent length is 200 ft.
The following accessories are compatible with H Series heat pumps:
11
YORK Technical Guide: HMH7 Series - 17 SEER Horizontal Discharge Modulating Heat Pump
Johnson Controls Ducted Systems
