5331838-YTG-A-0317
4
Johnson Controls Unitary Products
CHARGING PROCEDURES:
1. Determine outdoor unit factory charge from Tabular Data Sheet.
2. Determine indoor coil adjustment (if any) from Tabular Data Sheet.
3. Calculate the additional charge for refrigerant piping using this Tabular Data Sheet if line length is greater than 15 feet (4.6 m).
4. Total system charge = item 1 + item 2 + item 3.
5. The manifold gauge set is already installed on the unit for evacuation and charging. Use these gauges to initially charge the system using system pressures and
subcooling. You will find the charging information printed on the bottom of the unit data tag. More charging information is available in the “Service Data Applica-
tion Guide”, available online. For subsequent annual maintenance visits the charge verification display can be used to quickly check overall system condition and
the system charge without attaching a separate manifold gauge set or temperature sensors.
6. Permanently mark the unit data plate with the total amount of refrigerant in the system.
SYSTEM CHARGE FOR VARIOUS MATCHED SYSTEMS
Outdoor Unit
YXV24B21S
YXV36B21S
YXV48B21S
YXV60B21S
Indoor Unit
1
Additional Charge, oz
AVV25B
0
–
–
–
AVV37B
–
0
–
–
AVV37C
–
0
–
–
AVV49C
–
–
0
–
AVV49D
–
–
0
–
AVV61C
–
–
–
0
AVV61D
–
–
–
0
CM25B
0
–
–
–
CM37B
–
0
–
–
CM37C
–
0
–
–
CM49C
–
–
0
–
CM49D
–
–
0
–
CM61C
–
–
–
0
CM61D
–
–
–
0
All of the combinations shown in the above System Charge table require Advanced Main Air Circulating Fan indoor product. "Coil Only" matches
are not available for these systems.
FOOTNOTES:
1. Charge adders shown above do not indicate that coils are rated for every application. Refer to Performance Data Tables for actual performance for specified
system matches. Obtain certified system ratings from
www.ahridirectory.org
.
IMPORTANT
It is recommended before starting the system to connect the thermostat to Wi-Fi using a local network or portable hot-spot so the
thermostat and system receive the latest software updates to optimize system performance.
