Technical information

12/01/02

LINE SET INSTALLATION

A universal line set adapter kit, part number OS-QUICK, is

available if you need to field engineer your line set. Both

lines should be insulated separately the entire length of run.

The refrigerant charge for a new unit is distributed between

the unit head and the URC condenser. The line set has a

minimal holding charge of 15 to 30 psig refrigerant vapor.

If you need to field engineer your line set or shorten/

lengthen a precharged line set you can do so by following

these steps:

1. Using the OS-QUICK kit, braze the line set connec-

tions. (If you shorten or lengthen a precharged line

set, recover the holding charge, cut or lengthen and

braze the connections.)

2. Pressurize the lines and leak check all braze joints.

3. Evacuate the lines through the service ports on the

Aeroquip quick connect fittings.

4. Charge both lines with 15 to 30 psig R-404A vapor.

To make Aeroquip connection to the unit head and

condenser:

1. Lubricate the threads and O-ring with clean

refrigerant oil.

2. Tighten the female connector until it bottoms out.

Note: Always use a back up wrench when tightening

these fittings.

3. Then turn an additional 1/4 turn to assure a good

brass to brass seal. Leak check the joints with soap

bubbles or an electronic leak detector.

12/20/03

2/20/03