6 L-3571 ENGLISH
SEAWATER SYSTEM
Condensing units that are using the water-cooled option must be installed with the necessary seawater system. The seawater
system consists of a through-hull fitting, seacock, strainer, seawater pump, seawater hose and overboard discharge. If more
than one condensing unit is supplied by a single pump, or the air conditioning system pump is being shared for the refrigeration,
a pump relay is required.
REFRIGERATOR/FREEZER BOXES
The Dometic Applications Department can assist in box design. Box design is very important to the proper operation of a
system. A poorly designed and/or built refrigerator/freezer box will result in poor operation of the overall system. Care must be
taken to address type of insulation, thickness of insulation, air circulation and drains.
Insulation thickness is important to the performance of the system. More insulation offers better performance. If the box has a
drain, a drain plug must be used. In addition, a gasket sealing the box lid is important to prevent moisture and heat-gain from
entering the box.
SYSTEM INSTALLATION
This section covers installation procedures for your refrigeration system. Please read the manual completely before attempting
to install any equipment.
This system is designed for certain capabilities and to operate under certain conditions. Any change in design conditions may
result in lower capacities. Installer must understand: a) design requirements for the system; and b) conditions under which
operation is expected and for which the system was designed. See “Tools Required” on page 6 for tools and accessories
needed for the installation.
UNPACKING AND INSPECTION
Units are securely packed in shipping containers approved by the International Safe Transit Association.
Upon arrival, carefully check all items against the packing list to ensure all cartons were received. Move units to the normal “up”
orientation as indicated by the arrows on each carton.
Check the cartons for external damage, removing the units from the cartons if necessary. If damage is found, file a request in
writing for inspection by the carrier agent immediately. The carrier is responsible for making prompt inspection of damage and
for a thorough investigation of each claim. The distributor or manufacturer will not accept claims from dealers for transportation
damage. If no damage is found, carefully remove all shipping material and properly dispose of it.
After unpacking, keep the units upright. Laying a unit on its side or top could cause equipment damage.
IMPORTANT SAFETY CONSIDERATIONS
ELECTRICAL SHOCK HAZARD
TOOLS REQUIRED
Before starting, make sure you have all of the following tools:
WARNING
Electrical shock hazard. Disconnect voltage at main panel or power source before opening any cover. Failure to
comply may result in injury or death.
To minimize the hazard of electrical shock and personal injury, this component must be effectively grounded. Refer to
the installation guidelines for further information.
• Standard tool box • Drill/hole saw
• Flaring tool (if flares are required) • Jig saw
• Refrigerant gauge manifold (rated for R-404A only) • Insulated tape
• Refrigerant tank (rated for R-404A only) • Duct tape
• Nitrogen tank • Electrical tape
• Vacuum pump • Threaded-seal tape
• Scale • Bedding compound to seal thru-hull fittings
• Micron gauge • Hardware to secure unit, pump, strainer, grilles, and
• Electronic leak detector (rated for R-404A) control panel
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