TECH - SPEC'S Technician's Pocket Guide - Hoshizaki America, Inc.

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 connections.
(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.
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12/01/02 12/20/03
2/20/03