Manitowoc Ice 11M ユーザーズマニュアル

1. Both the discharge and liquid remote condensing lines 

must be kept to a minimum distance for maximum 
performance. All Multiplex systems are capacity rated to 
100 ft (30.5 m) tubing distance between the compressor 
and condenser. If you have another brand condenser, 
please add additional charge for the condenser (example: 
up to three (3) pounds for a MAC condenser).

2. Any vertical rise 25 ft (7.62 m) or greater must have a 

manufactured or installed trap (bend), in the discharge 
refrigeration line from the compressor to the remote 
condenser. 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.

4. The trap(s) must be of minimum height of 3" (7.6 cm) and 

a width of 6" (15.2 cm) to minimize oil accumulation. The 
traps can also be bent out of the refrigeration tubing. 
Carefully bend the tubing down 12", and then sweep the 
tubing back up.

5. It is critical that the Multiplex remote condensing line size 

specifications for the specific model be maintained. The 
specifications are 1/2” discharge and 3/8” liquid lines.

The Multiplex remote condensing units have a 208-230 Volt, 
50/60 HZ, 1 PH fan motor that includes a permanent split 
capacitor and internal overload protection. The electrical wires 
from the refrigeration unit wire to the condenser. The electrical 
installation must be in accordance with local codes, National 
Electrical Code and regulations.

1. Determine a position for installation that will allow access 

for maintenance and is free from obstruction. Verify hot air 
discharge from other condensers does not interfere with 
the inlet of this condenser.

2. Install the four legs to the sides of the condenser using 

the mounting bolts provided.

3. The General Contractor or Owner must secure two 

treated lumber 4" x 4" x 36" (or longer). You may then 
mount the remote condenser to the treated lumber.

4. The General Contractor or Owner must install a 3" pitch 

pot in the roof. Then seal for weather protection.

5. Locate the pre-charged refrigeration lines shipped with 

the system. These lines must be a correct length for the 
building design. Avoiding any kinks, neatly route these 
lines from the remote condenser to the refrigeration unit. 
Excess refrigeration tubing must be handled in one of two 
ways. When coiling the excess tubing, make sure the 
inlet to the coil is at the top of the coil and the exit is the 
bottom of the coil. There can be no more than one turn to 
the coil. If you have more tubing, you must cut out the 
excess before connecting the ends. When cutting the 
tubing, you must first evacuate the refrigerant (line sets 
have a positive refrigerant holding charge of two to three 
ounces). After shortening and welding the tubing together 
again, you must vacuum the tubing to 250 microns. Then 
recharge the tubing with the appropriate refrigerant at 4 
ounces per length of tubing.

If you have a MAC Multi-Pass condenser please add
three (3) pounds additional charge.

Discharge Line 

Condenser Trap

To the 

Condenser

Discharge Line Trap Every 

25 Vertical ft. (7.62 m)

3 ft (.9 m) (minimum) of Discharge 

Line Trap at the Compressor

Compressor

3" (7.6 cm) x 6" (15.2 cm) 

Maximum Trap Area

Excess refrigeration tubing must be properly cared
for before being connected to either the remote
condenser or the refrigeration unit.

3" Pitch 

Roof