Outdoor Air Fluid Coolers Layout And Components - Seresco CWT Series Operation And Maintenance Manual

SA temperature sensor of dehumidifier, equipped with gas heater, would be composed of four
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regular temperature sensors, installed in different points at supply duct connection, averaging
temperature reading.
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If the dehumidifier is equipped with the pool heating option, the Pool Water Temperature sensors (Pool In
(25) and Pool Out (26)) measure the entering and leaving pool water temperature. The sensors are located at
respective manifolds.
As an option, the pool water heat exchanger piping/manifold may have water flow switch also.
o

The compressor's discharge line (high pressure side) is equipped with Temperature and Pressure sensors set -
Discharge Temperature Sensor, High Pressure Transducer and High Pressure Switch (27) - to protect the
compressor and control its operation. A similar function is performed by Suction Temperature Sensor, Low
Pressure Transducer and Low Pressure Switch (28) located at compressor's suction line (low pressure side).
High and low pressure transducers are only installed on the lead compressor module.
o

If dehumidifier is equipped with Heat Recovery option, it could also have Exhaust Air (EA) Temperature
Sensor (29), installed downstream of exhaust-side located heat recovery glycol coil.

Reheat pressure transducer (30) for measuring air pressure upstream of reheat coil.
Main Electric Panel, apart from devices listed above (control board, OP, etc.) also contains Voltage Monitor; some
optional control sensors and devices such as an air pressure differential sensor, current sensor(s). It may also be
located in main electrical panel or in the dehumidifier in general.

Outdoor Air Fluid Coolers Layout and Components

The general layout of AC options (air-and water-cooled) is shown on Pic.D.5 below with the outdoor fluid cooler
NG-V-12, equipped with additional pump package (Fig.1) and NG-V-32 (Fig.2) as an example. While layout and
main components are similar for all applicable AC options, there are some deviations (number of fans,
composition, etc.). Refer to AC Options Basic View (Basic Information chapter) for additional information.
31
33
Seresco CWT Series OMM
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32
35
37
31
18
33
36
Pic. D.5
January 2022