Vintage Cellars Platinum Split Fully Ducted 4000WC - Manual (Page 32)

PSWC 033114
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Charging
• Install a low pressure gauge on the access valve near the evaporator unit (fan coil unit).
• With the power off to the condensing unit, admit liquid refrigerant through the liquid line service valve until
the refrigerant stops flowing.
• Verify that the low pressure control is set to 20 PSI for high event and 15 PSI for the differential.
• Plug in the condensing unit to a dedicated 20 amp electrical outlet. The compressor should turn on if the
pressure in the suction line is above 20 psi.
• Add refrigerant as a vapor through the low side of the system.
• Observe the sight glass. If bubbles are present, add more refrigerant in vapor form to the low side.
• Once the sight glass is clear, check the superheat at the outlet of the evaporator unit (fan coil unit). Adjust the
TXV until the superheat is between 8-12 degrees.
• Adjust the head pressure control until the head pressure is 125 PSI. The head pressure control must be set to
maintain a head pressure no higher than 150 PSI.
Confirm the controller is displaying the correct temperature and that the controller is not displaying an alarm. If the
controller is displaying an alarm reference page 32 for corrective action. Confirm that the suction line is completely
insulated, from TXV to compressor. Confirm that the sight glass has no bubbles and the ambient temperature around
the condensing unit is not getting excessively hotter. Confirm that both king valves have been back seated and the
nuts have been installed back on the king service ports.
INSTALLING THE CONDENSING UNIT (continued)