Install Instructions

Table 3 . Optional TXV kit part numbers. Some combinations may require a TXV. See AHRI
for system combination ratings.
Table 4.Superheat Charging Chart
95/79 90/75 85/71 80/67 75/63 70/58
115 23 16 7 6 5 5
110 24 17 9 6 5 5
105 26 19 11 6 5 5
100 27 21 13 7 6 5
95 29 23 14 9 6 5
90 30 25 18 12 7 5
85 32 26 20 15 9 6
80 34 28 22 17 11 6
75 35 30 24 19 13 7
70 37 32 26 21 16 10
65 38 34 29 24 19 13
60 40 36 31 27 22 17
55 41 37 34 30 26 21
Superheat (°F)
Indoor Temperature(°F) Dry Bulb/wet Bulb
Outdoor
Temp(°F)
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.
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.
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