T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS
63-7147—05 40
Table 4. T775L replacement for S684 or S984.
Component/Function S684 or S984 T775L Replacement
Sensor Series 60, Series
90, T915, T991,
T921, W902, etc.
controller
Sensor A - Standard 1097 Ohm temperature sensor.
Sensor B - Standard 1097 Ohm temperature sensor; (required only if reset
control is used; i.e. a T991B or W902A controller was used.)
See “Temperature Sensors” on page 3.
NOTE: If you are implementing two-sensor reset control, Sensor A must always
be the controlled temperature and Sensor B must always be the
controlling temperature. For example, in a reset control based on outside
temperature, Sensor A must be the inside sensor and Sensor B must be
the outside sensor.
Delay Timer S400A Use the On Delay and Off Delay programmable parameters of the T775L.
Throttling Range n/a Set the programmable Throttling Range parameter to match the application.
Reset T991B or W902A
(if used)
Reset programming in the T775L provides the reset curve.
Loads 1 - 5 n/a Program the 5 relays into a single loop.
Auxiliary Pot. S964J only The T775L Controller with two T775S Expansion modules allows for up to 12 relay
outputs.
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