To select the wall module parameters and input points for a CHC controller.
Configure the functionality of the controller inputs.
Configuration can be performed with the wizard Off-line or On-line.
| Name | Definition |
| Controller/Wall module | Configures the functionality of the connected wall module. Be careful that the features configured here are the same as the features available on the wall module device to be connected. |
Specify whether or not the controller is to be used with a space temperature sensor connected to its input. Normally, a space temperature sensor is used, but in cases where the space temperature is supplied from another device via the network, the local space temperature sensor input is not used. Yes The local space temperature sensor input is used. Ensure that a space temperature sensor is actually connected otherwise the controller measures incorrect values. No The local space temperature sensor is not used. This option must be selected when a sensor is not connected.
This configuration defines whether a Wall Module with LED or a Wall Module with LCD Display is connected. For the LED, either the Override Status or the Effective Occupancy Status is displayed. The LCD Display show the both – the Effective and the Override Status and an additional Off Condition. The Override Status results from the Scheduler, the Network Override, the Override Button and the Occupancy Sensor. The Off Condition results from the Fanspeed Switch, the Window Contact and the Medium from nviApplicMode. LED Override The LED shows the Override from the Override Button or from the Network. On indiactes Override Bypass, 1 Flash per Second indiactes Override Unoccupied, 2 Flashes per Second indiactes Override Standby or Occupied. 4 Flashes indiactes the Controller answers of the Network Management Command Wink. LED Occupancy The LED shows the effective Occupancy mode. On indiactes effective Occupied or Bypass, 1 Flash per Second indiactes effective Standby, Off indiactes effective Unoccupied. 4 Flashes indiactes the Controller answers of the Network Management Command Wink. LCD Display This mode is used only for a Wall Module with LCD Display. The Display has following Symbols to show the Occupancy Modes: Sun indiactes effective Occupied or Bypass, Half Sun indiactes effective Standby, Moon indiactes effective Unoccupied. No Symbol and OFF in 7-Segment indiactes the Controller is Off. In the Off mode, a Snow Flag indicates whether Frost Protection is configured. Blinking Symbols are used to show the Override: Blinking Sun indiactes Override Occupied or Bypass, blinking Half Sun indiactes Override Standby, Blinking Moon indiactes override unoccupied. The Controller answers with the Network Management Command Wink with blinking Sun and Moon.
Define how the override button on the connected wall module is to be used. None The wall module button is not used for bypass function. ByPass Only The Bypass button, when pressed, has two different functions depending on the length of time the button is held down:
BYPASS The Bypass button, when pressed, has the following function: Normal
The setpoint knob is available in different types of scale, and with different setpoint meanings, based on the country of usage. The temperature engineering unit used ( Deg.C or Deg.F) is the setting made in the tool (example, LonMaker) when creating the new project. That setting is used for the total project. Note that the setpoint knob only affects the Occupied and Standby Setpoints. The Unoccupied setpoint is not affected by the setpoint knob. Note that Version C and D Chilled Ceiling controllers have an on-board setpoint. They cannot be used with an external T7770 setpoint device. No Knob The setpoint knob is ignored. Note that this must be chosen if there is no setpoint knob connected to the controller. This selection prevents the controller from reacting to incorrect setpoint values. Relative The setpoint knob is a relative knob, showing only a setpoint shift as (+) and (-) changes to the configured setpoint. Absolute Middle The setpoint knob is an absolute knob, showing the setpoint in absolute degrees. It is used as the space temperature setpoint midway between the heating and cooling zero energy band.
These two fields specify the allowed range of adjustment available from the wall module setpoint knob. This range is used by the building manager for energy management purposes, to balance allowed comfort conditions with energy usage. (SETPOINT KNOB = RELATIVE) When the setpoint knob has been chosen as relative, the setpoint limits define the range of adjustment of the setpoint knob from the zero point, in (DDC) for Deg.C installations and (DDF) for Deg.F installations. (SETPOINT KNOB = ABSOLUTE MIDDLE) When the setpoint knob has been chosen as absolute, the setpoint limits are limits on the absolute range of the setpoint knob in (Deg.C) for Deg.C installations and (Deg.F) for Deg.F installations. |
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| Input Points | Specifies usage of the controller digital and analog inputs.
Window Closed Indicates if a window is opened. An open window disables the controller operation. If the contact is closed, the window is closed. Window Open Indicates if a window is opened. An open window disables the controller operation. If the contact is closed, the window is closed. Occupied Sensor Indicates if the room is occupied. While unoccupied, the controller switches from the occupied operating setpoints to the standby operating setpoints. If the contact is closed, the space is occupied. UnOccupied Sensor Indicates if the room is occupied. While unoccupied, the controller switches from the occupied operating setpoints to the standby operating setpoints. If the contact is closed, the space is unoccupied. ChangeOver Cool This selection is for local heat/cool changeover operation for two-pipe units using a switch or local thermostat switch. When the contact closes, this input indicates that the system can operate in cooling mode. When the contact opens, this input indicates that the system can operate in heating mode. ChangeOver Heat This selection is for local heat/cool changeover operation for two-pipe units using a switch or local thermostat switch. When the contact closes, the input indicates that the system can operate in heating mode. When the contact opens, the input indicates that the system can operate in cooling mode. Condensation Indicates if there is condensation in the ceiling. When condensation is detected, the controller closes the cooling output. The cooling output is controlled again after 5 minutes if condensation is not detected anymore. When the contact closes, there is condensation. No Condensation Indicates if there is no condensation in the ceiling. As long as there is no condensation, the contact is closed. If the contact opens, the controller closes the cooling output. The cooling output is controlled again after 5 minutes if condensation is no longer detected. When the contact closes, there is no condensation. Movement This selection is used for movement detector configuration where a closed contact indicates movement. Movement detector is the same as occupancy sensor, but with an additional Hold Time of 15 minutes. This adds a delay to the occupancy signal such that the space is considered occupied until 15 minutes has elapsed since the last movement is detected. No Movement This selection is used for movement detector configuration where a closed contact indicates no movement. Movement detector is the same as occupancy sensor, but with an additional Hold Time of 15 minutes. This adds a delay to the occupancy signal such that the space is considered occupied until 15 minutes has elapsed since the last movement is detected. Cold Water The cold water temperature sensor input is used. Ensure that a cold water temperature sensor is actually connected otherwise the controller measures incorrect values. Not Used The cold water temperature sensor is not used. This option must be selected when a sensor is not connected and is shared via the network.
Window Closed Indicates if a window is opened. An open window disables the controller operation. If the contact is closed, the window is closed. Window Open Indicates if a window is opened. An open window disables the controller operation. If the contact is closed, the window is open. Occupied Sensor Indicates if the room is occupied. While unoccupied, the controller switches from the occupied operating setpoints to the standby operating setpoints. If the contact is closed, the space is occupied. UnOccupied Sensor Indicates if the room is occupied. While unoccupied, the controller switches from the occupied operating setpoints to the standby operating setpoints. If the contact is closed, the space is unoccupied. Changeover Cool This selection is for local heat/cool changeover operation for two-pipe units using a switch or local thermostat switch. When the contact closes, this input indicates that the system can operate in cooling mode. When the contact opens, this input indicates that the system can operate in heating mode. Changeover Heat This selection is for local heat/cool changeover operation for two-pipe units using a switch or local thermostat switch. When the contact closes, the input indicates that the system can operate in heating mode. When the contact opens, the input indicates that the system can operate in cooling mode. Condensation Indicates if there is condensation in the ceiling. When condensation is detected, the controller closes the cooling output. The cooling output is controlled again after 5 minutes if condensation is not detected anymore. When the contact closes, there is condensation. No Condensation Indicates if there is no condensation in the ceiling. As long as there is no condensation, the contact is closed. If the contact opens, the controller closes the cooling output. The cooling output is controlled again after 5 minutes if condensation is no longer detected. When the contact closes, there is no condensation. Movement This selection is used for movement detector configuration where a closed contact indicates movement. Movement detector is the same as occupancy sensor, but with an additional Hold Time of 15 minutes. This adds a delay to the occupancy signal such that the space is considered occupied until 15 minutes has elapsed since the last movement is detected. No Movement This selection is used for movement detector configuration where a closed contact indicates no movement. Movement detector is the same as occupancy sensor, but with an additional Hold Time of 15 minutes. This adds a delay to the occupancy signal such that the space is considered occupied until 15 minutes has elapsed since the last movement is detected. Cold Water The cold water temperature sensor input is used. Ensure that a cold water temperature sensor is actually connected otherwise the controller measures incorrect values. Not used The cold water temperature sensor is not used. This option must be selected when a sensor is not connected and is shared via the network. Note: You cannot configure the same for Analog Input1 and Analog Input2. For example, you cannot configure Analog Input1 as Window Contact and Analog Input2 as Window Contact. All digital inputs for Input2 are supported since controller version 1.0.4.
Specify whether or not the controller is to be used with a humidity sensor connected to its input. If the controller is configured for ceiling protection, as defined in the Outputs page, the humidity must be either connected or shared via the network. Humidity The humidity sensor input is used. Ensure that a humidity sensor is actually connected; otherwise, the controller measures incorrect values. Not Used |