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Quest 185 Cool
Installation, Operation and Maintenance Instructions
15
www.QuestHydro.com
5.7 Charging the System
The condensing unit is pre-charged with 42 oz. of HFC-410A refrigerant. The installer will add HFC-410A refrig-
erant for the dehumidifier and line set.
1. Calculate the amount of HFC-410A required by determining the length of the line set and performing the
calculation below:
11oz + 2.2oz per every 10 feet of line set length = Total charge required
2. Connect a cylinder of HFC-410A refrigerant to the center port of the manifold gage set. Position the HF-
C410A refrigerant cylinder to deliver liquid only.
3. Open the valve on the HFC-410A cylinder.
4. Place the HFC-410A cylinder on a refrigerant scale and zero the scale.
5. Open the valve on the gas line stub valve core removal tool.
6. Open the low pressure side of the manifold gage set and weigh in the amount of HFC-410A calculated in step 1.
7. Close the valve on the HFC-410A cylinder and the low pressure side of the manifold gage set.
LOW
HIGH
VACUUM PUMP
MANIFOLD
GAUGE SET
MICRON
GAUGE
TO VAPOR
SERVICE VALVE
OUTDOOR
UNIT
RECOMMEND
MINIMUM 3/8” HOSE
500
TO LIQUID SERVICE VALVE
