1-877-420-1330
Quest 185 Cool
Installation, Operation and Maintenance Instructions
18
www.QuestHydro.com
Charging the System
The condensing unit is pre-charged with 42 oz. of HFC-410A refrigerant. The installer will add HFC-410A refrigerant 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 HFC410A 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.
8. Close the valve on the gas line stub valve core removal tool.
9. Remove the high and low pressure sides of the manifold gage set from the valve core removal tools.
10. Install the valve core in the gas line stub port using the no-loss valve core removal tool
11. Remove the no-loss valve core removal tools from the service ports on the liquid and gas line stubs.
12. Install the caps on the service ports of the liquid and gas line stubs finger tight, then tighten
an additional 1/6 turn. Check the service port caps for leakage – reinstall if necessary.
OUTDOOR
UNIT
TO VAPOR
SERVICE
VALVE
MANIFOLD
GAUGE SET
RECOMMEND
MINIMUM 3/8” HOSE
LOW
HIGH
HFC-410A
12 1
11
10
9
8
7
6
5
4
3
2
12 1
11
10
9
8
7
6
5
4
3
2
1/6 turn
1/12 turn
LINE SET INSTALLATION
