Installation, Operation and Maintenance Manual
C13-Series
10
Subject to change without notice.
10.20-IM (0818)
INFORMATION
Two circuit units have 2 groups of couplings�
It’s a good idea to label or mark the various
connections on both the evaporator
and condensing sections BEFORE
DISCONNECTING THE COUPLINGS to
eliminate the possibility of intermixing the
circuits when the interconnecting tubing
is installed� The suction and discharge
lines in the evaporator section will now
be dangling, be careful not to damage the
tubing connections� Do not disconnect the
male half of the self-sealing couplings,
which are still attached to the bulkhead of
the condensing section�
3�
Remove the unit top tie piece*, removing only those
screws which attach the top piece to the two top
panels� (*If unit is already shipped split, these are not
included�)
4�
Remove control box access panels from the evaporator
section and the condensing section by removing the
screws at the top and bottom of each access panel�
5�
Disconnect and discard the wires which run between
the two internal control boxes� Single circuit units will
have two low voltage wires to be disconnected, dual
units will have 3 low voltage wires� See Wiring Diagram
on the inside of the evaporator control box access
panels for disconnecting power wiring�
6�
Remove the two unit tie rails attached to the unit
mounting rails on each side of the unit�
7�
Carefully pull the evaporator section away from the
condensing section�
8�
Verify that the self-sealing couplings are completely
disengaged and not leaking refrigerant�
The sections may now be moved to their individual locations
for installation (either floor-mounted or hung).
Interconnecting Refrigerant Tubing
After the separated sections have been installed, the field
supplied interconnecting tubing can be run, using the self-
sealing couplings supplied in the optional interconnecting
tubing kit� For dual circuit units, two kits are supplied� It is
recommended that some refrigerant oil be placed on the
coupling threads (Item
(10)
, Figure 5), to facilitate threading�
The following instructions apply:
1�
Hand thread the female halves of the self-sealing
couplings (supplied with the interconnect tubing kit)
onto the male couplings (fastened to the unit, Item
(5)
, Figures 4 and 5)� Turn union nut (Item
(11)
, Figure
5), approximately 1 to 1-1/2 turns� This is to make
sure that the interconnecting tubing will be routed and
brazed with the self-sealing couplings in their final
proper location, so that there will be no difficulty when
the final coupling assembly is made.
2�
If there is a hot gas bypass option, connect that
coupling the same way�
3�
Run the interconnecting tubing required�
5
4
5
13 10
15
4
11
14
13
12
Figure 4: Disconnect/Connect Self-Sealing Coupling
Figure 5: Install/Service Self-Sealing Coupling
Coupling Threads
Union Nut
Rubber
Seal
Metal
Seal
Summary of Contents for C13-Series
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