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TWIN MG 092223
INSTALLING THE CONDENSING UNIT, CONTINUED
TXV ADJUSTMENT
The TXV is shipped from the factory preset for 50 Feet. A TXV adjustment may be necessary based on the ambient temperatures in
the cellar and at the condensing unit.
Danfoss TXV Adjustment
Most units are equipped with a Danfoss adjustable TXV.
• Adjust the TXV until the total superheat measured at the suction (vapor/low pressure) line service valve is 10°F to 25°F.
With the power o to the condensing unit, admit liquid refrigerant through the liquid line service valve.
To adjust the TXV use a 5/32” hex key to remove the cap from the TXV superheat adjustment port. (Figure 1)
Finalizing the Installation
• Conrm the entire suction line from the evaporator unit to the condensing unit is insulated using cellular insulation or
equivalent. Seal all seams with Armaex 520 Foam Insulation Adhesive or equivalent.
• Conrm that the control is displaying the correct temperature and that no alarms are present.
1. With the cap removed, insert the hex key into the super-
heat adjustment port.
2. Increase superheat by turning clockwise.
3. Decrease superheat by turning counter-clockwise.
FIGURE 1
APPROXIMATE OPERATING PRESSURES
CELLAR TEMPERATURE 55°F
Temp. Charge Total Charge Total
60°F 30-35 PSIG 82-87 PSIG
75°F 32-37 PSIG 110-115 PSIG
85°F 33-38 PSIG 130-135 PSIG
95°F 34-39 PSIG 156-161 PSIG
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