Install Instructions

J4AH6E61A1C00A TXV factory installed
J4HP6061A1000AA
J4AC6061A1000AA
4AYTXVH3A6061A
Table 2 . Piston size for system combination.
Table1. Factory installed piston size for each model. Additional piston sizes are provided in the
ship-with literature bag as necessary.
Model 50 52 56 58 63 65 68 70 73 75 80 83 90
X*
X
X X X X X
X*
X
XX
J4AH6E60B1C00AA
X*
This coil comes with a factory installed piston metering device. See Table 1 for factory installed piston
size. Some system combinations will require a different sized piston to be field installed.
Contact your local parts center to order the appropriate MAYORIACHP piston kit for your system
combination.
Use Table 3 for TXV kit part numbers.
A TXV may be required to achieve minimum efficiency ratings or for long refrigerant line set
applications. Reference AHRI for system combination ratings.
Reference Table 4 to charge the system by superheat when using a piston. Reference the outdoor unit
installation guide to change the system by subcooling when using a TXV.
Outdoor Unit Model
Indoor Unit Model
Piston Size(R410a)
J4HP4018A1 0.052
J4AC4018A1 0.052
J4AC4024A1 0.058
J4HP4024A1 0.058
J4AC4024A1 0.058
J4HP4030A1 0.065
J4AC4030A1 0.065
J4AC4036A1 0.073
J4AC6018A1 0.052
J4AC6024A1 0.058
J4AC6030A1 0.065
J4HP6018A1 0.052
J4HP6024A1 0.058
J4HP6030A1 4AYTXVH3G2436A
J4HP4036A1 0.073
J4AC4036A1 0.073
J4HP4042A1 0.075
J4AC4042A1 0.075
J4HP4048A1 0.083
J4HP4060A1 0.090
J4AC6036A1 0.073
J4AC6042A1 0.075
J4AC6048A1 0.080
J4AC6060A1 4AYTXVH3G6000A
J4HP6036A1 0.070
J4HP604
2A1 4AYTXVH3G4248A
J4HP6048A1 4AYTXVH3G4248A
J4AH4E24A1A00A
052 factory installed
J4AH4E36A1B00A
073 factory installed
J4AH6E60B1C00A 090 factory installed
* means that this piston is pre-installed
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