Charging Procedure - York HMH7 Series Technical Manual

Table 4: System charge table
Outdoor unit
AVC42C
AVC48(C,D)
AVC49(C)
AVC60(C)
AVC60(D)
CF/CM/CU18(A,B)
CF/CM/CU24(B,C)
CF/CM/CU30(A,B,C)
CF/CM/CU36(B,C,D)
CF/CM/CU42(B,C,D)
CF/CM/CU48(C,D)
CF/CM/CU60(C,D)
CF/CM64D
Note:
• For applications requiring a TXV, use the S1-1TVM*** series kit.
• It is necessary to use a TXV kit with these indoor units to obtain system performance.
• Systems matched with furnaces or air handlers not equipped with blower-off delays may
require blower Time Delay Kit S1-2FD06700224.
• It is not possible to use CF and CU coils in horizontal applications.
• Charge adders shown above do not indicate that coils are rated for every application. See
Physical and electrical data
certified system ratings from www.ahridirectory.org.

Charging procedure

1. Check the unit factory charge listed on the unit nameplate to verify the refrigerant charge for
the outdoor unit, the smallest matched indoor unit, and 15 ft of interconnecting line tubing.
2. Verify the TXV and additional charge required for the specific matched indoor unit in the
system using System
3. Add additional charge for the amount of interconnecting line tubing greater than 15 ft at the
rate specified in Physical and electrical
4. For indoor matches requiring additional charge, weigh in the refrigerant for the specific
matched indoor unit and the actual lineset length.
5. After weighing in the charge adders for the matched indoor unit and lineset, verify the
system operation against the temperatures and pressures in the charging chart for the
outdoor unit. Locate the charging charts on the outdoor unit and also in the Service Data
Application Guide on www.simplygettingthejobdone.com. Follow the charging procedure in
the Installation Manual according to the type of indoor metering device in the system, and
allow 10 min after each charge adjustment for the system operation to stabilize. Record the
charge adjustment made to match the charging chart.
6. For downflow installations and horizontal right installations, some indoor units require
additional charging adjustments to ensure correct equipment operation. Refer to the
Installation Manual for the outdoor unit.
10 YORK Technical Guide: HMH7 Series - 17 SEER Horizontal Discharge Modulating Heat Pump
HMH72B241S HMH72B361S
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-
-
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2
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for actual performance for specified system matches. Obtain
charge.
data.
Johnson Controls Ducted Systems
HMH72B481S
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- 7
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9 -
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- 7
HMH72B601S
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8
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8