3. Add additional charge for the amount of interconnecting refrigeration piping greater than 15
ft at the rate specified in Table 2.
4. For installations requiring additional charge, weigh in refrigerant for the specific matching
indoor unit and actual refrigeration piping length.
5. After weighing in the charge adders for the matched indoor unit and refrigeration piping,
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 in the Service Data
Application Guide on www.simplygettingthejobdone.com. Follow the subcool or superheat
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. Permanently stamp the unit nameplate with the total system charge defined as follows: total
system charge = base charge (as shipped) + charge adder for matched indoor unit + charge
adder for actual refrigeration piping length + charge adjustments to match the charging
chart.
Air handler capacity
Table 5: Air handler capacity
Outdoor unit model Air handler model Air handler
width (in.)
Indoor coil
model
Rated CFM Net cool
(MBH)
Sens cool
(MBH)
SEER2 EER2
RAC13418B21S JHVTB18BBAC2N1 17.5 — 725 18.00 13.80 15.00 12.50
RAC13418B21S JMET08BS2N1 17.5 XAFB18A 725 18.00 13.70 15.00 12.50
RAC13418B21S JMET08BS2N1 17.5 XAFB24B 725 18.00 13.80 15.00 12.50
RAC13418B21S JMET08BS2N1 17.5 XAHB24B 700 18.00 13.70 15.00 12.50
RAC13418B21S JMET12BS2N1 17.5 XAHB24B 650 18.00 13.30 15.00 12.50
RAC13418B21S RFCB18BBAEMP2N1 17.5 — 650 18.00 13.30 15.00 12.50
RAC13424B21S JHVTB18BBAC2N1 17.5 — 775 24.00 17.20 14.75 12.25
RAC13424B21S JHVTB24CBAC2N1 17.5 — 800 24.00 17.70 15.00 12.50
RAC13424B21S JMET08BS2N1 17.5 XAFB30C 725 24.00 17.10 15.00 12.50
RAC13424B21S JMET08BS2N1 17.5 XAHB24B 700 24.00 16.70 14.50 12.25
RAC13424B21S JMET08BS2N1 17.5 XAHB30C 700 24.00 17.00 15.00 12.50
RAC13424B21S JMET08BS2N1 17.5 XAUB30C 725 24.00 17.10 15.00 12.50
RAC13424B21S JMET12BS2N1 17.5 XAFB24B 775 24.00 17.20 14.75 12.25
RAC13424B21S JMET12BS2N1 17.5 XAFB30C 800 24.00 17.60 15.00 12.50
RAC13424B21S JMET12BS2N1 17.5 XAHB24B 775 24.00 17.20 14.50 12.25
RAC13424B21S JMET12BS2N1 17.5 XAHB30C 775 24.00 17.50 15.00 12.50
RAC13424B21S JMET12BS2N1 17.5 XAUB30C 800 24.00 17.60 15.00 12.50
RAC13424B21S JMET12CS2N1 21.0 XAFC30C 950 24.00 18.70 15.00 12.50
RAC13424B21S JMET12CS2N1 21.0 XAHC30C 925 24.00 18.50 14.75 12.25
RAC13424B21S JMET16CS2N1 21.0 XAHC30C 925 24.00 18.50 15.00 12.50
RAC13424B21S RFCB18BBAEMP2N1 17.5 — 725 24.00 16.90 14.75 12.25
RAC13424B21S RFCB24CBAEMP2N1 17.5 — 750 24.00 17.30 15.00 12.50
RAC13430B21S JHVTB36DBAC2N1 17.5 — 850 28.60 20.00 14.50 12.00
RAC13430B21S JHVTC36DBAC2N1 21.0 — 1050 29.80 22.20 14.75 12.25
RAC13430B21S JMET12BS2N1 17.5 XAFB30C 800 28.60 20.00 14.75 12.25
RAC13430B21S JMET12BS2N1 17.5 XAFB36D 1175 29.80 23.00 14.25 12.00
RAC13430B21S JMET12BS2N1 17.5 XAHB30C 1150 29.60 23.40 14.00 11.75
RAC13430B21S JMET12BS2N1 17.5 XAUB30C 800 28.60 20.00 14.75 12.25
RAC13430B21S JMET12BS2N1 17.5 XAUB36D 1175 29.80 23.00 14.25 12.00
RAC13430B21S JMET12CS2N1 21.0 XAFC30C 950 29.40 21.60 14.75 12.25
RAC13430B21S JMET12CS2N1 21.0 XAHC30C 925 29.20 21.40 14.50 12.00
RAC13430B21S JMET12CS2N1 21.0 XAHC36D 925 29.20 21.00 14.75 12.25
RAC13430B21S JMET16CS2N1 21.0 XAFC30C 950 29.40 21.60 14.75 12.25
RAC13430B21S JMET16CS2N1 21.0 XAHC30C 925 29.20 21.40 14.75 12.25
RAC13430B21S JMET16CS2N1 21.0 XAHC36D 900 29.20 20.80 14.75 12.25
RAC13430B21S RFCB30DBAEMP2N1 17.5 — 950 29.40 21.40 14.50 12.00
RAC13430B21S RFCB36DBAEMP2N1 17.5 — 1200 29.80 23.20 14.00 11.75
RAC13430B21S RFCC36DBAEMP2N1 21.0 — 800 28.60 19.70 14.75 12.25
RAC13436B21S JHVTB36DBCC2N1 17.5 — 1000 35.40 25.00 14.25 12.00
13Technical Guide: RAC Series RAC134 Models - 13.4 SEER2 Split-System Air Conditioner - Single-Phase
Johnson Controls Ducted Systems
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