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TXV/ORIFICE USAGE
Use this table for C33, C35, CH23, CH33, CH35 and CR33
Field Installed TXV/Orifice Match-Ups.
Model
Refrigerant Metering Orifice
(RFC)
Order No.
018
10W94
024
10W97
030
11W00
036
11W01
N/A
041
11W06
042
N/A
047
11W07
048
059
N/A
060
11W14
CX34, CX35 upflow coils and all Lennox air handlers are shipped with a factory
installed TXV. In most cases, no change out of the valve is needed.
If a change out is required it will be listed in the "TXV SUBSTITUTIONS" table.
The correct TXV must be ordered separately and field installed.
C33, C35, CH33 and CH35 coils - Use the orifice shipped with the outdoor unit
or replace the factory installed orifice with the expansion valve listed.
CR33 and CH23 coils - Use the orifice shipped with the outdoor unit or use the
expansion valve listed.
MOST POPULAR MATCHES
Outdoor Unit
Model
018
024
030
036
041
042
047
048
059
060
AHRI STANDARD 210/240
Cooling or heating capacities are net values, including
the effects of blower motor heat, and do not include
supplementary heat. Power input is the total power input
to the compressor(s) and fan(s), plus any controls and
other items required as part of the system for normal
operation.
ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 10
Thermal
Expansion
Valve (TXV)
Orifice Size
0.052
12J18
0.060
12J18
0.067
12J18
0.071
12J19
12J20
N/A
12J20
0.081
12J20
N/A
12J20
0.083
N/A
12J20
0.096
12J20
Indoor Unit
Model No
CX34-25
CX34-25
CX34-31
CX34-38
CX34-49
CX34-49
CX34-62C
CX34-62C
CX34-62C
CX34-62C
*TXV SUBSTITUTIONS
Use this table to determine if the factory installed TXV in
the indoor unit needs to be replaced.
Indoor Coil or Air
Model
Handler
030
CX35-48
030
CX34-42
030
CX34-43
030
CX35-48
041
CX34-38
041
CX35-36
* CX34 coils and all air handlers - The factory installed expansion valve must
be replaced with the expansion valve listed (ordered separately).
If the combination is not listed above, the factory installed TXV is used.
Units which do not have an indoor air-circulating blower
furnished as part of the model, i.e., split system with
indoor coil only, is established by subtracting from the
total cooling capacity 1250 Btu/h per 1,000 cfm, and by
adding the same amount to the heating capacity. Total
power input for both heating and cooling is increased by
365 W per 1,000 cfm of indoor air circulated.
Factory
Replacement
TXV
TXV
12J20
12J18
12J20
12J18
12J20
12J18
12J20
12J18
12J19
12J20
12J19
12J20
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