Product specifications

9
UNIT FEATURES:
UNIT FEATURES:
Design Pressure Test Pressure Design Pressure Test Pressure
(PSIG) (kPa) (PSIG) (kPa) (PSIG) (kPa) (PSIG) (kPa)
Water Cooler
CH 200 (1379) 300 (2068) 300 (2068) 375 (2586)
Shell & Tube
Heat Exchanger
Water Side
Refrigerant Side
All units have direct drive propeller fans and motors.
Close blade tip clearance with the fan venturi assure
smooth, quiet operation.
All air cooled condensers are formed of 3/8 inch
diameter copper tubes mechanically expanded into
aluminum fins for maximum efficiency of heat transfer
between the circulating refrigerant and air. The fins
have full self-spacing collars which completely cover
each tube. The staggered tube design improves the
thermal efficiency of the coil and eliminates bypassing
of air around the tubes. The return bends, headers
and nipples are all copper, sized for minimum pressure
drop, brazed with inert gas in the tubes and tested after
fabrication to 450 psig.
See the electrical data for information on motor
specifications on pages 38 & 39.
AIR COOLED CONDENSERS
A separate subcooling circuit is standard on all units to
maximize energy efficiency.
Condenser Fan Section
Partitions separate each fan section to eliminate possible
fan back spin and provide excellent head pressure
controls. Two different fans cover the entire line and
fan cycling control is supplied as standard. This lowers
the minimum ambient temperature at which the
packaged equipment will effectively start and operate.
For lower ambient requirements than standard, variable
speed options are available.
All cabinetry is heavy gauge galvanized steel
construction with aluminum tube sheets. Control
panels, fan decks, and header covers are coated with
special high grade outdoor quality coating system tested
to maintain integrity under the ASTM-B-117
specification.
Water Coolers
The water coolers employ the most advanced vessel
technology available today, including the patented
Inner-Fin construction of the CH coolers (Figure 4).
Larger vessels with microfin tubes are also designed and
constructed to meet the requirements of the ASME
Code, Section VIII, Division 1 for unfired pressure vessels
and are stamped accordingly.
Cooler heaters are provided to protect to –20°F (–28.9°C)
DX COOLERS
ambient which requires a separate 115 volt service.
The CH model coolers have copper tubes brazed into
tubesheets. The shells are constructed of steel and the
entire assembly is welded and brazed for the best cost
effectiveness possible. Vent and drain connections are
included on all vessels.
See Table 2 below for appropriate pressure ratings, Table
11 for connection sizes, pressure drop curves and
minimum/maximum flow rates.
TABLE 2
PATENTED INNER-FIN
CONSTRUCTION
SECTION A-A
VENT AND DRAIN
WATER FLOW PATH
FREEZE STAT
BULB WELL
BULB WELL
RETURN WATER
IN
REFRIGERANT
INTERNAL WATER BAFFLES
"SEE PHYSICAL SPEC'S
FOR CONNECTION SIZES"
SEE SECTION A-A
Figure 4