Dwyer CDW2 Manual de usuario descargar pdf (Pagina 2)

IRING

he CDW2 series has two basic configurations. The first provides three active outputs

(

relative humidity, temperature, CO

)

and an independent thermistor. The other

onfiguration provides only the CO

utputs and an independent thermistor. The

power requirements and wiring for the two configurations are identical. The

recommended wire gauge is 18 to 22 AWG (1.0 to 0.75 metric).

CCESSORIES

odel 1508 Duct Mount Enclosure – The CDW2 series can be installed in a model

508 duct mount enclosure.

odel 1552 Outside Air Enclosure – This NEMA-3R weatherproof enclosure

includes thermostat and allows installation of the sensor in environments with

temperatures down to -40°F (-40°C).

Calibration

he Series CDW2 is factory set with the proprietary logic function activated. The logic

unction allows the sensor to continuously recalibrate itself when the indoor

oncentrations drop to levels similar to outside air conditions when the building is

unoccupied. The building must be unoccupied for a minimum of 4 hours or more for

this self calibration to be effective. The logic allows the sensor to maintain its

calibration over the life of the sensor. If the building is occupied 24 hours a day or

there is significant sources of CO

while the building is unoccupied, the logic function

should be turned off.

MAINTENANCE/REPAIR

Upon final installation of the Series CDW2, no routine maintenance is required. The

Series CDW2 is not field serviceable and should be returned if repair is needed. Field

repair should not be attempted and may void warranty.

WARRANTY/RETURN

Refer to “Terms and Conditions of Sales” in our catalog and on our website. Contact

customer service to receive a Return Goods Authorization number before shipping the

product back for repair. Be sure to include a brief description of the problem plus any

additional application notes.

WIRING DIAGRAMS

Figure 8: Duct mount enclosure (left), outside air enclosure (right)

Figure 3: Power block terminal connection. For use on all models.

(See Power Supply Requirements)

igure 4: 3-wire configuration for use with models CDW2-2W4XX

igure 5: 4-wire configuration for use with models CDW2-2W4XX

Figure 6: 3-wire configuration for use with models CDW2-2W4XX-LCD

Figure 7: 4-wire configuration for use with models CDW2-2W4XX-LCD

DWYER INSTRUMENTS, INC.

Phone: 219/879-8000 www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: info@dwyer-inst.com

1 2

DWYER INSTRUMENTS, INC 1

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