DC Voltage, Belt Driven Model MARINER

PRODUCT DESCRIPTION
Recently revised, the Mariner series of holdover refrigeration systems is available from 1/4 HP to 1 HP capacities, for use with 12, 24 or 32 volt DC power supplies, and has been proven to be the ideal system for seafaring vessels with or without on-board AC power. Its unique design allows for automatic operation when either the alternator or the battery charger is energized. An electrical interlock prevents accidental battery drain

These units come standard with a cupronickel sea water condenser for improved efficiency and lower operating pressure. The extensive Mariner series can efficiently cool a number of different box sizes and configurations. For maximum versatility, add an optional air cooled condenser to provide uninterrupted service when the vessel is hauled or unattended

Condensing units can be installed in any convenient location and are unaffected by vibration or moisture

The Mariner series units meet or exceed applicable ABYC and U.S. Coast Guard regulations, CE Directives, and general Air Conditioning and Refrigeration Industry (ARI) standard

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FEATURES ---------------
Modular Concept
  • Unique compact base fits any application.
  • Water cooled and air/water cooled units available.
High Quality Components
  • Rebuildable compressor, including valve lates and shaft seals for extended life.
  • Replaceable brushes on all DC motors.
  • Zinc chromate primer protection against corrosion- for all chassis components.
  • Continuous duty cycle rating on DC motors.
Remote Electrical Box
  • Completely enclosed box protects all components.
  • On board low voltage (DC) circuit provides safe operation of controls.
Environmental Considerations
  • Utilizes "ozone friendly" refrigerant R-409A.
  • All units have base valves with service ports for evacuation, leak checking and refrigerant containment.
Quality Assurance
  • Each unit is hermetically sealed using nitrogen to ensure a contaminate-free circuit.
  • Every unit is leak checked, test run and shipped pre-charged with refrigerant.
  • Charge Guard© protection provides sealed process ports to ensure system integrity during handling and installation.

SPECIFICATIONS
Model
DC425BD
DC450BD
DC475BD
DC4100BD
Refrigerant
R-409A
R-409A
R-409A
R-409A
Charge (oz/g)
55/1559
55/1559
55/1559
55/1559
Oil
Ester
Ester
Ester
Ester
Charge (oz/g)
12/342.8
18/514.2
18/514.2
18/514.2
Capacity (BTU/H)
26*F (-3*C)
1800
3400
5000
6500
0*F (-18*C)
1600
2800
4200
5500
-9*F (-23*C)
1500
2200
3600
4500
-18*F (-28*C)
1250
1800
3200
3900
Electrical Data
Motor Voltage (DC)
12
12/24
12/24
12/24
Amperage
21
39/20
58/29
80/39
Max. Circuit Breaker
30
50/30
70/40
90/50
Physical Data
Dimensions (in/cm)
A
20.00/50.80
20.00/50.80
20.00/50.80
20.00/50.80
B
12.50/31.75
13.25/33.65
13.25/33.65
13.25/33.65
C
14.00/35.56
18.00/45.72
18.00/45.72
18.00/45.72
D
10.25/26.00
10.25/26.00
10.25/26.00
10.25/26.00
E
4.70/11.94
4.70/11.94
4.70/11.94
4.70/11.94
F
10.50/26.67
10.50/26.67
10.50/26.67
10.50/26.67
Weight (lb/g)
Net
90/40.82
115/52.16
117/53.07
122/53.34
Ship
100/45.36
125/56.70
127/57.61
132/59.87
*BTU ratings are the average of heat extraction from either 26*F, -9*F or -18*F solution holdover plates, and are not the capacity of the compressor or condensing unit. These figures are to be used to determine run times required to maintain box design temperature
**32 volt DC available upon request
***For wire size, ampacity, etc., refer to ABYC Standards, Section E-9 (DC Voltage
Installation Guidelines for DC Voltage, Belt Driven Model MARINER

When choosing the proper model Mariner condensing unit, primary consideration should be give to calculated BTU loads and available power supply. Any special requirements (number of boxes and/or controls, refrigerant line lengths, wiring sizes, etc.) should be determined prior to installation.

The location of the unit should be dry and accessible for service. It is not recommended to locate the unit in an area that exceeds a continuous maximum temperature of 104*F. The location of the unit should provide for proper air flow through the air cooled condenser, if added, to avoid overheating the system.

The unit should be installed with the fasteners provided, and secured to a horizontal surface sufficient to support the weight and torsion load from the vessel's movement. Fasten the remote electrical box using the mounting hardware provided.

The sea water system must be installed below the water line and routed on a continuous incline from a dedicated thru-hull intake to the pump inlet, up to the condensing unit to prevent air locks in the sea water pump. Reinforced marine grade hose should be used for the sea water circuit, and all fittings should be double-clamped.

The refrigeration lines connecting the holding plate(s) to the condensing unit must be constructed from refrigeration grade, dehydrated copper and must be properly insulated (suction line only or both lines insulated together).

All fittings are designed to use flare connections, and these connections are to be made using proper flaring tools and techniques during

installation. A non-leak compound may be used on flare connections, if desired, to prevent refrigerant leaks due to vibration or loosening of suction side connections because of frost. This compound should be applied sparingly to the male threads of the fitting, and great care must be used to prevent contact with the flare seat.

Flare connections must be adequately tightened, usually as tightly as possible, with the exception of 1/4" lines which can be crushed if the flare is over tightened. All associated mechanical components (solenoid valves, check valves and expansion valves) must be located and secured properly.

Thermostats are to be located and properly secured in the box(es) or on bulkheads with sensing bulbs properly secured into the sensing wells located on the holding plates. Circuit breakers and wire gauges must be sized according to marine design standards. Only stranded tinned copper should be used. All equipment must be properly grounded.

Refrigerant line sets ad holding plates must be thoroughly evacuated (recommended to 200 microns) and leak checked prior to releasing refrigerant from the condensing unit into the system and start up of the equipment. The refrigerant charge may require adjustment once the entire system is operational. Follow proper procedures and current regulations when adding or removing refrigerant to the system.

In keeping with regulations sent forth by the EPA, only certified technicians should perform service on, or make adjustments to the refrigerant circuit.

In the interest of product improvement, Marine Air Systems' specifications and design as outlined herein are subject to change without prior notice.


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