2.3. COMPATIBLE SENSORS
There are a large number of sensors that are compatible with the CSC.
It is not possible to mix old generation and ‘T’ type sensors on the CSC.
The compatible sensors are listed below along with their resistance type number’s.
The first time the CSC is powered up it will automatically configure itself to the
sensor type connected (“old generation” or “T Type”).
2.4. CHANGING SENSORS
If a CSC connected to old generation sensors is subsequently equipped with a set of
“T Type” sensors it is necessary to manually select the sensor type as 5 (T Type).
Remember that you cannot mix “T Type” and old generation sensors on the same
CSC. “T Type” sensors should be used on all new installations.
2.5. USING ADJUSTABLE SPACE TEMPERATURE SENSORS
Adjustable room sensors do not change the CSC controllers programmed set point,
they fool the controller into believing that the space temp is above or below the ideal
space temperature. The CSC is primarily a water temperature controller and the
space sensor only provides an influence over the flow temperature as a way to
modify the actual space temperature. Where these sensors are used the controller
may be forced into a Frost condition is adjustment is to great, e.g. asking for 30°C in
the space the controller may think its 10°C or less. For this reason it is
recommended that the low limit space setting is reduced to its minimum when using
adjustable sensors to avoid confusion. Non adjustable space sensors will allow
automatic frost protection to take place.
"T TYPE" SENSORS
Sensor Sensor Type Resistance Type Temperature
Range
DRT 3451, 3453 Room 5
–5 to +40°C
DWT 1701, 1702 Water 5
–10 to +120°C
DST 1601, 1603 Water (strap on) 5
+5 to +120°C
DOT 2301 Outside 5
–40 to +40°C
CSC USER GUIDE October, 03
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