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DS 1.002

02/99

DRT

Controllers
DS 2.201 - CZU
DS 2.801/2.951 - IAC

ROOM TEMPERATURE SENSOR
with fan speed control switches

Specification No. 337-X-XXX*

The DRT Room Temperature Sensor incorporating fan speed control
switches is used in conjunction with the CZU temperature controller.

This system is used for the control of temperature zones of buildings,
such as hotel bedrooms or individual offices, which are air conditioned
by means of fan coil units. The room occupant is provided with local
adjustment of room temperature and also fan speed (ON/OFF or OFF,
1, 2 and 3), for optimum comfort settings.

The instrument can, alternatively, be applied as a remote temperature
setting unit, in conjunction with a DDU temperature sensor located in
the fan coil unit return air space, for example.

Alternative models are available to suit units with either single-speed
or 3-speed fans.

* For the full specification number replace the 4Xs with the appropriate figures

from the TYPE column in the table overleaf.

Summary of Contents for DRT Series

Page 1: ...s which are air conditioned by means of fan coil units The room occupant is provided with local adjustment of room temperature and also fan speed ON OFF or OFF 1 2 and 3 for optimum comfort settings The instrument can alternatively be applied as a remote temperature setting unit in conjunction with a DDU temperature sensor located in the fan coil unit return air space for example Alternative model...

Page 2: ...witch Terminals Screw type to accept one 2 5mm2 wires Housing Tough fire resistant plastic case and backplate Protection class IP20 Ambient Temperature Limits 10 to 55 C Associated Controller CZU temperature controller Refer to DS2 201 for details IAC controller Refer to DS2 951 or DS2 801 for details A look up table module should be used to offset the control module RPW input by 10 C if terminals...

Page 3: ...ace relays or contactors for fan circuits as required 6 Slide the mains cover over the mains terminals and tighten the fixing screw 7 CZU Controllers Only i Connect sensor wires to non polarised terminals A C of sensor when used as temperature sensor See Fig 3 Connect to terminals A B when used as remote setting unit See Fig 3 IAC Controllers Only i When connecting terminals A and C A is the commo...

Page 4: ...iring precautions See DS 2 201 2 801 or 2 951 Do not short circuit sensor terminals for test purposes Observe maximum ambient temperature Interference with those parts under sealed covers renders the guarantee void Design and performance of Satchwell equipment are subject to continual improvement and therefore liable to alteration without notice Information is given for guidance only and Satchwell...

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