1088917-YIM-B-1014
Johnson Controls Unitary Products 57
Charging The Unit
Figure 26: ZF180 (15 Ton) Charging Chart
Figure 27: ZF210 (17.5 Ton) Charging Chart
Figure 28: ZF240 (20 Ton) Charging Chart
Figure 29: ZF300 (25 Ton) Charging Chart
250
300
350
400
450
500
550
125 130 135 140 145 150 155 160
Suction Pressure (psi)
115º
105º
95º
85º
75º
Outdoor Temp (ºF)
Make sure that two condenser fans are running when charging. One fan may switch off at
lower ambient temperatures (about 65 degrees).
65º
15 Ton Charging Chart
Discharge Pressure (psi)
1.
2.
This chart is applicable to unit with the TXV’s left to the factory setting. If the TXV’s have been
adjusted in the field, the charging chart may no longer apply.
17.5 Ton Charging Chart
250
300
350
400
450
500
550
125130135140145150155160
Suction Pressure (psi)
Discharge Pressure (psi)
115º
105º
95º
85º
75º
Outdoor Temp (ºF)
65º
Make sure that two condenser fans are running when charging. One fan may switch
off at lower ambient temperatures (about 65 degrees).
1.
2.
This chart is applicable to unit with the TXV’s left to the factory setting. If the TXV’s
have been adjusted in the field, the charging chart may no longer apply.
250
300
350
400
450
500
550
600
125 130 135 140 145 150 155 160
Discharge Pressure (psi)
Suction Pressure (psi)
Outdoor Tem
ºF
1. Make sure that two condenser fans are running when charging. One fan may
switch off at lower ambient temperatures (about 65 degees)
2. This chart is applicable to unit with the TXV's left to the factory setting. If the
TXV's have been adjusted in the field, The charging chart may no longer apply.
65º
25 Ton Charging Chart
250
300
350
400
450
500
550
600
125 130 135 140 145 150 155 160
Suction Pressure (psi)
Discharge Pressure (psi)
115º
105º
95º
85º
75º
Outdoor Temp (ºF)
65º
Make sure that two condenser fans are running when charging. One fan may switch
off at lower ambient temperatures (about 65 degrees).
1.
2.
This chart is applicable to unit with the TXV’s left to the factory setting. If the TXV’s
have been adjusted in the field, the charging chart may no longer apply.
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