Air innovations 99H0360-10, Installation, Operation And Maintenance Manual, Page: 51 / 85

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Examples of adjustments:
(Less than 25’/7.62 meters): If a WGS40 system that is only 15’/4.57 meters (10’/3.05 meters less
than factory charge baseline from table above) in total length. At .50oz/foot & .0465kg/meter
adjustment, that equals a decrease in total system charge from factory baseline of 5oz /.142kg.
Now a total system charge of 53oz/1.498kg. You then can subtract the initial factory charge of
16oz/.453kg from this new total, and that is the amount you ADD to the system upon start-up.
In this example = 37oz/1.045kg ADDED
(Greater than 25’/7.62 meters): If a WGS40 system that is 35’/10.67 meters (10’/3.05 meters
greater than factory charge baseline from table above) in total length. At .50oz/foot &
.0465kg/meter adjustment, that equals an increase in total system charge from factory baseline of
5oz /.142kg. Now a total system charge of 63oz/1.78kg. You then can subtract the initial factory
charge of 16oz/.453kg from this new total, and that is the amount you ADD to the system upon
start-up.
In this example = 47oz/1.327kg ADDED
Additional Charge for Xtreme Low Ambient Systems (XLA Option)
For systems that have Wine Guardian’s XLA option installed. Add the following additional charge to the system.
SS018, DS025, DS050 4.0 oz
WGS25, WGS40, WGS75 4.0 oz
DS088, DS200 6.0 oz
WGS100, WGS175 6.0 oz
Once the system has been charged compare the high side system pressure to the “discharge line pressure” found
on the “Split System Operations Chart” on page 50 for proper operation. If actual discharge pressures do not
match the chart then compare subcooling values as additional charge may be needed.
Split System Operations Chart
***
Operation data is based on typical wine cellar conditions of 57
°
F (14 Deg C)DB/49
°
FWB (55%RH)
DS025
OD Ambient (F) Suction (psig) Discharge (psig) Suction
Superheat (F)
Sub-cooling (F)
10 ºF / -12 ºC 21 100 7 ºF / -14 ºC 23 ºF / -5 ºC
40 ºF / 4 ºC 24 104 13 ºF / -10 ºC 24 ºF / -4 ºC
60 ºF / 15 ºC 24 107 22 ºF / -5 ºC 20 ºF / -6 ºC
70 ºF / 21 ºC 24 108 25 ºF / -4 ºC 18 ºF / -7 ºC
80 ºF / 26 ºC 24 108 31 ºF / -1 ºC 16 ºF / -8 ºC
100 ºF / 37 ºC 27 150 38 ºF / 3 ºC 19 ºF / -7 ºC
115 ºF / 46 ºC 30 190 40 ºF / 4 ºC 21 ºF / -6 ºC
DS050