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Figure 2, DDWDC Major Component Location
Oil Sump,
Pump, Heaters
Rigging
Eyes
Condenser
Dual Relief
Valves
Common Oil
Cooler Water
Connections
Note: 1. Chilled water and condenser connection location can vary. Check markings on unit
or consult unit certified drawings for connection locations on specific units. 2. DWCC
two-circuit units have separate evaporator and condenser relief valves on each circuit.
Location and Mounting
The unit must be mounted on a level concrete or steel base and must be located to provide service
clearance at one end of the unit for possible removal of evaporator tubes and/or condenser tubes.
Evaporator and condenser tubes are rolled into the tube sheets to permit replacement if necessary. The
length of the vessel should be allowed at one end. Doors or removable wall sections can be utilized for
tube clearance. Minimum clearance at all other points, including the top, is 3 feet (1 meter). The
National Electric Code (NEC) can require four feet or more clearance in and around electrical
components and must be checked.
Operating/Standby Limits
Equipment room temperature, standby
•
Water in vessels and oil cooler: 32°F to 122°F (0°C to 50°C)
•
Without water in vessels and oil cooler: 0°F to 140°F (-18°C to 60°C)
•
WMC without water in vessels: 0°F to 130°F (-18°C to 54.4 °C)
Equipment room temperature, operating: 32°F to 104°F (0°C to 40°C)
10
Lubrication &
Compressor
Control Boxes
Centrifugal Chillers
Motor
Terminal Box
Condenser
D-EIMWC00804-14EN
Rigging
Eyes
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