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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.
DS 1.002
DRT
Controllers
DS 2.201 - CZU
DS 2.801/2.951 - IAC
02/99
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Summary of Contents for Satchwell DRT Series
- Page 1 DS 1.002 02/99 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.
- Page 2 DS 1.002 2 - 4 02/99 SPECIFICATION Adjustable Scale Number of Switch Type Switch Position Switch Function Positions 10 to 35°C • DRT 3801 • DRT 3851 MEDIUM HIGH Sensor Control Range: 10 to 35 ° Sensing Element: Negative temperature coefficient thermistor. Sensor Characteristics: Non-linear.
- Page 3 02/99 3 - 4 DS 1.002 CONNECTION DIAGRAMS DRT SWITCH WIRING DRT SENSOR CONNECTIONS Fan Off Indication Common SUPPLY Remote Set Value Fig.1 Remote Set Value + Room Temperature Fig.3 HIGH MEDIUM SUPPLY Fan Off Indication Fig.2 INSTALLATION 1. Select location for sensor which is representative of the space to be controlled and where it will be readily affected by changes in the general space temperature (See Fig.4).
- Page 4 Design and performance of Satchwell equipment are subject to continual improvement and therefore liable to alteration without notice. Slough • Information is given for guidance only and Satchwell do not accept Berkshire SL1 4UH responsibility for the selection or installation of its products unless United Kingdom information has been given by the Company in writing relating to a specific application.