Vinotemp WINE-MATE VINO1500SS Installation, Operation & Care Manual page 10

4. Piping, Evacuating, Charging and Starting
CAUTION:
• ALWAYS USE THE SUPERHEAT AND SUBCOOLING, PRESSURE
READINGS TO CHARGE REFRIGERANT PROPERLY, THE LISTED
CHARGES ARE FOR REFERENCE ONLY.
• CHARGE 15% MORE REFRIGERANT IN THE SUMMER IF THE UNIT IS
EQUIPPED WITH A LOW AMBIENT CONDITION KIT.
NOTES:
• THE LINE CONNECTION SIZES OF LIQUID FILTER & INDICATOR, THE
VALVE CONNECTION SIZES OF CONDENSING UNIT AND THE LINE
CONNECTION SIZES OF EVAPORATOR UNIT ARE NOT NECESSARY
THE SAME AS THE ABOVE SPECIFIED LINE SIZES.
• IF THE CONDENSING UNIT IS INSTALLED ABOVE THE EVAPORATOR
UNIT, USE THE SUCTION LINE ONE LISTED SIZE SMALLER.
• EXPANSION VALVE AND SOLENOID VALVE ARE INSTALLED ON
LIQUID LINE.
1) The installation order starts from condensing unit (including receiver and
discharge valve), liquid line filter-drier, moisture-liquid indicator/sight glass,
liquid line, to evaporator unit (including liquid line connection, solenoid
valve, expansion valve, and suction line connection), returning to insulated
suction line, suction valve and then back to condensing unit.
2) Use inverted siphons to prevent liquid from flooding back to the
compressor and aid oil returning to the compressor.
3) Both discharge and suction valves must be in the middle positions during
evacuating and charging.
4) Charge the system after pipe brazing, leak testing and evacuating. Liquid
must always be charged into the hide side.
5) The subcooling at the condensing unit shall be around 10
may be complete when there are no more bubbles forming in the liquid
indicator.
6) Head pressure range: 125 ~ 150 psig at 70 ~ 90
ambient temperature.
7) The evaporator superheat is set around 8 ~ 10
8) Suction pressure: 30 ~ 35 psig.
9) The temperature split crossing the evaporator shall be 8 ~ 10
wine room temperature.
10) Both discharge and suction valves must be in the back positions before
disconnecting evacuating and pressure gauges.
The line sizes and refrigerant charges are listed as follows.
REFRIGERATION
MODEL
VINO-1500SS <= 50 FT
VINO-1900SS <=50 FT
LIQUID
LINES LINE
1/4" OD
1/4" OD
- 9 -
°
°
F condensing unit
°
F at factory.
SUCTION DRAIN
LINE LINE
3/8" OD 1/2" OD
3/8" OD 3/8" OD
F. The charge
° °
F at 55 F
CHARGE
R134a/15 OZ
R134a/15 OZ