Through Walls or Floors
Refrigeration lines run through walls or floors must
be properly insulated. Avoid running lines through
the refrigeration cases. When this is done the lines
must be adequately insulated—Armaflex or equiva-
lent.
From Machinery to Solid Object
When mounting lines from machinery to a solid
object allow line freedom for vibration to prevent
metal fatigue.
P-Trap Construction
A P-Trap must be installed at the bottom of all
suction risers to return oil to the compressors.
Reduced Riser
When a reduced riser is necessary, place the
reduction coupling downstream of the P-Trap.
Factory Supplied Stubs
Stub sizes provided from the Manifolds do not
automatically correspond to the line sizes neces-
sary. It is the installer’s responsibility to supply
reduction couplings.
Protecting Valves and Clamps
When brazing near factory installed clamps or
valves, be sure to protect them with a wet rag to
avoid overheating.
HUSSM ANN CORPORATION • BRIDGETON, M O 63044-2483 • Printed in USA
COMPONENT PIPING
September 1, 1997
3 - 2
Figure 3-2 — Insulating a Riser
Floor
Riser
Insulation
Insulation 2nd Layer
Clamp Here
Factory Clamp
10
x
Pipe
Diameter
Riser
Keep this distance as
short as possible
Riser
Using P-Trap
Using Elbows
Reduced
Riser
Figure 3-4 — Trap Construction
Figure 3-5 — Reduced Riser
Figure 3-3 — Vibration Allowance
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