Specifications

Multiplex Company, Inc.
Component Parts Workbook
27
00218011 Revision B (KAK) 31 July, 2000
EI216524
Equipment Installation Instructions for
Multiplex Remote Condenser and Pre-charged
Refrigeration Lines
Pre-installation requirements
Multiplex Remote Condenser Requirements
1. Installation and maintenance are to be per-
formed only by qualified personnel who are
familiar with local codes and regulations, and
are experienced with this type of equipment.
2. Equipment of this type is intended for instal-
lation by qualified refrigeration mechanics.
As a condition of the warranty, the check test
and start-up procedure must be performed by
qualified personnel. Because of possible ship-
ping damage, both the Condensing Unit and
Refrigeration Unit(s) must be checked for re-
frigerant leaks.
3. Check to insure that the Remote Condensing
Unit, the Refrigeration Unit, and the Charged
Refrigerant Lines are marked with the same
refrigerant.
Multiplex Pre-charged Refrigeration Lines
Requirements
1. Both the Discharge and Liquid Remote Con-
densing lines should be kept to a minimum
distance for maximum performance. All Mul-
tiplex systems are capacity rated to 100 ft
(30.5 m) distance between the Compressor and
Condenser. Systems with distances greater
than this will experience some efficiency loss
in proportion to the distance. This should be
a minor capacity loss, less than one drink per
minute up to 300 ft (90 m).
2. Any vertical rise greater than 25 ft (7.62 m)
must have a manufactured or installed trap
(bend), in at least the Discharge Remote Con-
denser Refrigeration Line. A trap is necessary
for every additional 25 ft (7.62 m) vertical rise.
When excessive vertical rise exists, this trap
allows oil to reach the Condenser and return
to the Compressor.
3. The easiest method to create a trap, is to bend
the tubing (smoothly, no kinks) into the trap
form (refer to figure 3).
4. This trap(s) should be of minimum height of
3" (7.6 cm) and a width of 6" (15.2cm) to mini-
mize oil accumulation.
5. It is critical that the Multiplex Remote Con-
densing line size specifications for the spe-
cific model, be maintained. The specifications
are normally
1
/2" discharge and
3
/8" ID liquid
lines.
Installing the multiplex remote
condenser
The Multiplex Remote Condensing Units have
either a 230 Volt, 50/60 Hz, 1 PH Fan Motor or
a 120 Volt, 50/60 Hz, 1 PH Fan Motor that
includes a permanent split capacitor and
internal inherent overload protection. Motors
are factory wired to an external disconnect
switch located on the end of the unit.
Refrigeration unit has an electrical nipple
extending out of the back left side with the
electrical wires from the refrigeration contactor
extending through. The electrician must install
an electrical box at this location. Connect the
conduit to this box and the Remote Condenser.
The electrical installation should be in
accordance with local codes, National Electrical
Code and regulations. Proper fuse protections
should be provided for the Fan Motor.
1. Determine a position for installation that will
allow access for maintenance and is free from
obstruction.
2. Install the four (4) legs to the sides of the con-
denser using the mounting bolts provided.
3. Secure two (2) treated 4" x 4" to the roof or
mounting surface. Mount to the Remote Con-
denser (refer to figure 1).
4. Install a 3" Pitch Pot in the roof (refer to fig-
ure 2). Seal for weather protection.
5. Locate the Pre-charged Refrigeration Lines
shipped with the system. These lines should
be a correct length for the building design.
Neatly avoiding any kinks, route these lines
from the Remote Condenser to the Refrigera-
tion Unit.
Caution: Excess refrigeration line should be coiled
and placed in a horizontal (flat) position. When
stored in a vertical position, the loops act as an
oil trap and will effectively reduce the perfor-
mance of our equipment as well as increase the
risk of compressor failure.
Figure 1
Remote Condenser
Wolmanized 4 x 4
(not included)