Seresco CWT Series Operation And Maintenance Manual page 19

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Cooling (AC) coils (31) (where heat from glycol mixture is rejected to the ambient air) is mounted onto metal
frame, upstream (before) the fans (32), that pulls the air through the coils to absorb the heat.
Normally, fluid cooler would have multiple coils and fans. Cooler NG-V-12 (Fig.1), comprised of two
o
coils, mounted on the angle to each other, and two fans, presents a single block. Depending on the
capacity, cooler could be comprised of up to six such single blocks, stacked side by side on the same
frame and manifolded together – NG-V-32 is comprised of three such blocks.

Cooler piping connections (33) are identified respectively (IN – OUT);
In some cases, fluid cooler piping connection(s) may be located within pump package box (37), if fluid
o
cooler is provided with one.
Piping connection location may vary – refer to particular cooler labels, stickers, submittal and other
o
documentation.

Electric power is normally to be brought to disconnect (35) (if cooler is equipped with such), which feeds it to
the electrical box (36), that contains cooler power and control apparatuses.
Depending on fluid cooler specifics, location of electrical box may slightly differ; in some cases,
o
electrical box may be incorporated into pump package or located on the opposite side of the fluid
cooler.
Fluid Coolers Pump Package.
Fluid Coolers, if equipped with such option, would have a pump package box. Pic.D.6 below shows general layout
of pump packages, used for NG-V model fluid coolers. Note, that the package could be mounted onto the fluid
cooler directly (standard) or provided separately.

Pump (38) establishes glycol mixture circulation through
the fluid cooler and dehumidifier;

Expansion tank (39) compensates for temperature-
based glycol volume fluctuation;

The pump package electrical sub-panel (40) contains the
pump package electrical power and control apparatuses.

The pump package manifolds are usually equipped with
pressure gauges, automatic air venting valve, draining
and other valves.
January 2022
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39
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Pic. D.6
Seresco CWT Series OMM