Manitowoc Indigo NXT IDT0300A Installation, Operation And Maintenance Manual page 28

Installation
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Potential Personal Injury Situation
The ice machine head section contains
the refrigerant charge. Installation and
brazing of the line sets must be performed
by a properly trained and EPA certified
refrigeration technician aware of the
dangers of dealing with refrigerant charged
equipment.
Remote Condenser Installation
Step 1 Secure the Condenser.
Through-holes are provided to secure
the condenser to a curb, rack or wooden
timber.
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The ice machine head section contains
refrigerant charge. The ice machine head
section contains refrigeration valves
that must remain closed until proper
installation of the line sets is completed.
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Electrical power to the ice machine head
section, condensing unit or condenser
must be disconnected before proceeding.
Step 2 Route the Refrigeration Tubing.
Route the refrigeration tubing between
the ice machine head section and the
condenser.
• Maximum line set exposed on rooftop is
25% of total line set length.
• A qualified person must perform all roof
penetrations.
• Interconnecting wire must be routed
between the ice machine and condenser.
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Warning
Warning
Warning
Step 3 Connect the Line Set.
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 the remote
condenser. This prevents the loss of
refrigerant in the ice machine or condenser.
The quick connect fittings on the line sets
are equipped with access valves. Use these
valves to recover any vapor charge from the
line set.
Follow good refrigeration practices, purge
with nitrogen and insulate all tubing. Do
not change the tube sizes. Evacuate the
lines and place about 5 oz (145 grams) of
vapor refrigerant charge in each line.
1. Remove the dust caps from the line
set, condenser and ice machine.
2. Apply refrigeration oil to the threads
on the quick-disconnect couplers
before connecting them to the
condenser.
3. Carefully thread the female fitting to
the condenser or ice machine by hand,
then tighten the couplings with a
wrench until they bottom out.
4. Turn an additional quarter turn to
ensure proper brass-to-brass seating.
Torque to the following specifications:
Liquid Line
10 - 12 ft lbs
13.5-16.2 N•m
Part Number 000014141 Rev 11 12/23
Section 2
Discharge Line
35 - 45 ft lbs
47.5-61.0 N•m