TCY-T0121 Intelligent Compact Controller
Version: 2004-07
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Display and Operation
The TCY controller is designed with a modular casing structure. The user has the choice of a variety of designs and
materials. See separate brochure for details regarding different styles, colors and materials of operation terminals.
The operation terminal uses an LCD display and four operation buttons.
Legend:
1. 4-digit display of current value, time, control parameter or setpoint
2. Unit of displayed value, °C, °F, % or none
3. Graphical display of output or input value with a resolution of 10%
4. 4-digit display of current value, time, control parameter or setpoint
5. Operation modes:
Comfort mode,
Standby mode, Energy Hold Off
6. Symbols:
Heating Active
Cooling Active
Schedule Set
Direct Acting
Active
Reverse Acting
Active
Cascade
Override
7. Buttons for operating the controller
POWER button: Pressing the button less than 2 sec toggles standby and comfort mode. Pressing
the button for more than 2 seconds switches the unit off.
UP and DOWN buttons: change setpoints and parameters
OPTION button: used for accessing different control modes and advanced setup. Acts as Enter in
parameter changing menu.
Operation Modes
•
Comfort: The unit is in full operation mode. All the control functions are operating according to their
setpoints. The unit displays occupied mode.
•
Standby: The setpoints are shifted according to parameters UP-08. The heating parameter is shifted down
and cooling parameter up. The unit displays unoccupied mode. Outputs are limited to UP-09 standby
maximum. For two stages heating or cooling the second stage will not operate while in standby mode.
Standby operation may be disabled with UP-07.
•
Energy Hold Off (EHO): The unit is switched off. All outputs are off. The temperature will still be monitored
in order to activate the unit in case of frost. (If frost protection is enabled). Off is displayed.
Activation of operation modes
•
Via operation terminal
•
Clock: (Deluxe version only) Operation modes may automatically be switched according to daytime and
weekday. The clock symbol will be indicated if time programs are activated.
Note:
UP-00 defines if local override is allowed.
UP-04 controls access to time programs.
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