OVERVIEW
This section deals with the information necessary
for installing the refrigeration lines for a Scroll
Plus™ refrigeration system. The Scroll Plus™
components are piped as completely as practical
at the factory. Field piping requires only inter-
connection of the major components and to the
refrigerators.
REFRIGERATION LINE RUNS
Liquid lines and suction lines must be free to
expand and contract independently of each other.
Do not clamp or solder them together. Run sup-
ports must allow tubing to expand and contract
freely. Do not exceed 100 feet without a change
of direction or an offset. Plan proper pitching,
expansion allowance, and P-traps at the base of all
suction risers. Use long radius elbows to reduce
line resistance and breakage. Avoid completely
the use of 45Þ elbows. Install service valves at
several locations for ease of maintenance and
reduced service costs. These valves must be UL
approved for 450 psig minimum working pres-
sure.
HUSSM ANN CORPORATION • BRIDGETON, M O 63044-2483 • Printed in USA
September 1, 1997
P/N 401789
3 - 1
COMPONENT PIPING
Support Detail
Floor Run
Ceiling Run
Figure 3-1 Supporting Refrigeration Lines
Always use a Pressure Regulator
on nitrogen tanks.
Use only clean, dehydrated, sealed refrigeration
grade copper tubing. Use dry nitrogen in the
tubing during brazing to prevent the formation
of copper oxide. All joints should be made with
silver alloy brazing material; use 35% silver
solder for dissimilar metals.
WARNING
Figure 3-1 — Supporting Refrigeration Lines
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