Trane Oxbox J4HP4018A1 Installation Instructions Manual page 20

NOTE: Since the manufacturer has a policy of continuous product and product data improvement, if
the system combination you are looking for is not listed, check for the latest version of this
document at www.OXBOXHVAC.com.
Table 3 . Optional TXV kit part numbers. Some combinations may require a TXV. See AHRI
for system combination ratings.
Table 4.Superheat Charging Chart
Charge the system by superheat when using a piston. Reference the outdoor unit installation guide
to charge the system by subcooling when using a TXV.
Outdoor
95/79
Temp(°F)
115 23
110 24
105 26
100 27
95 29
90 30
85 32
80 34
75 35
70 37
65 38
60 40
55 41
Indoor Temperature(°F) Dry Bulb/wet Bulb
90/75 85/71
Superheat (°F)
16 7
17 9
19 11
21 13
23 14
25 18
26 20
28 22
30 24
32 26
34 29
36 31
37 34
19
80/67 75/63
6 5
6 5
6 5
7 6
9 6
12 7
15 9
17 11
19 13
21 16
24 19
27 22
30 26
70/58
5
5
5
5
5
5
6
6
7
10
13
17
21
BX-SVN-J4AH4E-1A-EN