12
FORM CIM 0203
voltage wires to be disconnected, dual and triple
units will have 3 low voltage wires. See Wiring
Diagram on the inside of the evaporator control
box access panels (Item , Figure 5) for discon-
necting power wiring.
6. Remove the two side cross-member angles (Item
, Figures 5 and 7; and Item , Figure 6).
7. Carefully pull the evaporator section away from
the condensing section. Double check that the self-
sealing couplings are completely disengaged.
The sections may now be moved to their individual
locations, either floor-mounted or hung.
INTERCONNECTING REFRIGERANT
TUBING
After the separated sections have been installed, the
interconnecting tubing can be run, using the self-sealing
couplings supplied in the interconnect tubing kit (See
Figure 14). For dual circuits, 2 kits are supplied; for
triple circuits, 3 kits are supplied. It is recommended
that some refrigerant oil be placed on the coupling
threads (Item , Figure 13), to facilitate threading. The
following instructions apply:
1. Hand thread the female halves (Item , Figures
12 and 13) of the self-sealing couplings (supplied
with the interconnect tubing kit, Figure 14) onto
the male couplings (still fastened to the condens-
ing unit, Item , Figures 12 and 13). Turn union
nut (Item , Figure 13), approximately 1 to
1-1/2 turns. This is to make sure that the inter-
connecting tubing will be routed and brazed
with the self-sealing couplings in their final
proper location, so that there will be no diffi-
culty when the final coupling assembly is made.
2. Attach the male couplings (same as Item , sup-
plied with the interconnecting tubing kit) to the
outside of the back panel of the evaporator sec-
tion at the location vacated by the original cou-
plings, using the flanges (Item ) and screws
(Item ) provided in the kits (See Figures 13
and 14). The panel has holes to accept the
screws (Item ) to be utilized. Mount male cou-
pling halves, same as Item , by sliding the
flanges (Item , from interconnect kit) over end
of couplings
before brazing tubing
and attach
with screws (Item ) to outer back panel of
evaporator section. Do not connect female half
of couplings (Item , still dangling inside
evaporator section) until brazing is complete.
If there is a hot gas bypass option, connect that
coupling the same way.
3. Run the interconnecting tubing required.
NOTE: Installations of units of 2 Tons or
more may be made with up to 100 feet
equivalent lengths by installing the recom-
mended tube sizes (See Figure 15) and add-
FIGURE 15:
Recommended Tubing Sizes for Interconnect
*
...
Piping over 100' and up to 150' requires a receiver tank in each liquid line.
*
For units under 2 Ton, the interconnecting tubing should have a 3/8" diameter liquid line and 5/8" diameter suction line.
SUCTION LINE
LIQUID LINE
Evap. Lower than
Evap. Higher than
Cond. Unit
or on same level
Max. Lift 40'
as Cond. Unit
Up to 100'
Over 100'
...
Up to 100'
Over 100'
...
Up to 100'
Over 100
...
2 Ton
3/4
3/4
3/4
7/8
3/8
3/8
3 Ton
3/4
7/8
7/8
1-1/8
3/8
3/8
4 Ton
7/8
7/8
1-1/8
1-1/8
3/8
1/2
4 Ton Dual
(2) 3/4
(2) 3/4
(2) 3/4
(2) 7/8
(2) 3/8
(2) 3/8
5 Ton
7/8
1-1/8
1-1/8
1-3/8
1/2
5/8
5 Ton Dual
(2) 3/4
(2) 7/8
(2) 7/8
(2) 1-1/8
(2) 3/8
(2) 3/8
6 Ton
(2) 3/4
(2) 7/8
(2) 7/8
(2) 1-1/8
(2) 3/8
(2) 3/8
8 Ton
(2) 7/8
(2) 7/8
(2) 1-1/8
(2) 1-1/8
(2) 3/8
(2) 1/2
10 Ton Dual
(2) 7/8
(2) 1-1/8
(2) 1-1/8
(2) 1-3/8
(2) 1/2
(2) 5/8
12 Ton Triple
(3) 7/8
(3) 7/8
(3) 1-1/8
(3) 1-1/8
(3) 3/8
(3) 1/2
15 Ton Triple
(3) 7/8
(3) 1-1/8
(3) 1-1/8
(3) 1-3/8
(3) 1/2
(3) 5/8
Summary of Contents for 4CA1901
Page 2: ...2 FORM CIM 0203 ...
