2-8
Installation Instructions
Section 2
Guidelines for Routing Pre-Charged Line Sets
First cut a circular hole in the wall or roof for tubing
routing. It is recommended that the line set end with
the service valves be connected to the ice machine.
The straight end will connect to the condensing unit
manifold.
Follow these guidelines when routing the refrigerant
lines. This will help insure proper performance and
service accessibility.
1.
When installing horizontal runs refrigerant oil
must be free to return to the condensing unit.
Pitch all suction lines in the direction of
refrigerant flow (toward condensing unit),
allowing a minimum of ½” drop per 10’ of
horizontal run.
2.
Route excess tubing in a supported downward
horizontal spiral as shown below. Do not coil
tubing vertically.
3.
Insulate all suction lines, suction line shut-off
valves and components, to prevent condensation
and sweating.
4.
Keep outdoor refrigerant line runs as short as
possible.
CAUTION
If a line set has a rise followed by a drop, another
rise cannot be made. Likewise, if a line set has a
drop followed by a rise, another drop cannot be
made.
LENGTHENING OR REDUCING
LINE SET LENGTHS
In most cases, by routing the line set properly,
shortening will not be necessary. When shortening
or lengthening is required, do so before connecting
the line set to the ice machine or condensing unit.
This prevents the loss of refrigerant.
The quick connect fittings on the line sets are
equipped with Schraeder valves. Use these valves to
recover any vapor charge from the line set. When
lengthening or shortening lines, follow good
refrigeration practices and insulate new tubing. Do
not change the tube sizes. Evacuate the lines and
place about 5-oz (142g) of vapor refrigerant charge
in each line.
SUPPORT EXCESS TUBING
IN A DOWNWARD
HORIZONTAL SPIRAL
SV1204A
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