Installing The Condensing Unit; Installation Of Interconnecting Refrigerant Lines (Suction And Liquid) - Wine Guardian PRO Series Installation, Operation And Maintenance Manual

Installing the Condensing Unit

• Condensing units are factory assembled with a sheet metal outdoor hood for protection
from the elements.
• A minimum of 12 inches is required around the perimeter of the condensing unit for
proper airflow across the coil, and to provide an adequate discharge airflow path through
the louver section. Any obstructions to this airflow will result in a decrease in
performance, and possibly premature failure due to a buildup of high pressure within the
system.
• The condensing unit is designed to operate in ambient temperatures ranging from 20
degrees F to 115 degrees F, as it is supplied with many standard features to assist full
operation in this wide range.
• Mount the condensing unit above normal snowfall levels, so as to allow uninhibited winter
operation. A build up of snow or any obstruction to airflow will result in a decrease in
performance and possible premature failure due to an increasingly high pressure within
the system.

Installation of Interconnecting Refrigerant Lines (Suction and Liquid)

NOTE: The interconnecting copper refrigerant lines shall be supplied by the installer.
The larger suction line must be fully insulated along its complete length from
condensing unit to fan coil unit. There is a factory-installed liquid line filter-drier inside
the condensing unit; therefore no additional drier is needed for proper operation. A
liquid line moisture/sight glass is factory installed in the condensing unit to assist in
monitoring the refrigerant charge, and the state of the refrigerant in the system.
• Keep horizontal and vertical distances between the indoor and outdoor section as close as
possible to minimize refrigerant charge required. This will reduce system issues related to
oil management that can impair performance and jeopardize the compressor's lubrication.
• Provide a one-inch pitch in suction and liquid line toward the evaporator for every 10 feet
of run to prevent any refrigerant that condenses in the suction line from flowing to the
compressor when the unit is off. These two lines can be routed together and wrapped
together, as long as the suction line is fully insulated as previously directed.
• Suction line riser traps are not required if the riser is properly sized to maintain refrigerant
velocity. Adding a trap will only increase pressure drop.
• Prevent dips, sags, or other low spots that will trap refrigerant oil, which is an issue
especially with long horizontal runs. Use hard refrigerant copper for longer horizontal runs
to prevent potential oil return problems. (see sample piping chart on page 34)
• When sweat connections are made in the connecting lines, be sure that the inside of the
• that compressor suction and discharge valves should be open to atmosphere no longer than
15 minutes. Compressors with POE (polyolester) oil will quickly become contaminated
when opened to atmosphere. On any installation, the use of a suction line filter, liquid line
filter drier and moisture indicator is recommended. If the suction line is larger than one-
quarter inch, a vibration eliminator should be installed close to the motor compressor in a
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