Carrier 48HC 04-28 Controls, Start-up, Operation And Troubleshooting

Also see for /50HC 04-28: Manual

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Carrier 48HC 04-28 Controls, Start-up, Operation And Troubleshooting Manual pdf 6 page image

6required. Use the ENTER and arrow keys to enter the four dig-its of the password. The default password is 1111.Pressing the ESCAPE and ENTER keys simultaneously willscroll an expanded text description across the display indicatingthe full meaning of each display point. Pressing the ESCAPEand ENTER keys when the display is blank (MODE LED level)will return the display to its default menu of rotating AUTOVIEW display items. In addition, the password will need to beentered again before changes can be made.Changing item values or testing outputs is accomplished in thesame manner. Locate and display the desired item. If the dis-play is in rotating auto-view, press the ENTER key to stop thedisplay at the desired item. Press the ENTER key again so thatthe item value flashes. Use the arrow keys to change the valueof state of an item and press the ENTER key to accept it. Pressthe ESCAPE key and the item, value or units display will re-sume. Repeat the process as required for other items.There are some points that can be forced from the scrollingmarquee or the Navigator display. If the user needs to force avariable, follow the same process as when editing a configura-tion parameter. A forced variable, regardless where the forcehas come from will be displayed with a blinking “.” on a scroll-ing marquee and a blinking “f” on a Navigator display follow-ing its value. For example, if economizer commanded position(EC.CP) is forced, the Navigator display shows “80f”, wherethe “f” is blinking to signify a force on the point. The scrollingmarquee display shows “80.” Where the “.” is blinking to sig-nify a force on the point. Remove the force by selecting thepoint that is forced with the key ENTER and then pressing theup and down arrow keys simultaneously. Depending on theunit model, factory-installed options and field-installed acces-sories, some of the items in the various Mode categories maynot apply.System Pilot™ and Touch Pilot™ DevicesThe System Pilot device (33PILOT-01) and Touch Pilot device(33CNTPILOT) can be used as CCN communication user-in-terfaces. These devices can be put on the CCN bus and ad-dressed to communicate with any other device on the network.Unlike the scrolling marquee and Navigator display, these pi-lots read the unit’s CCN tables and its CCN points can be mon-itored, forced, or configured. The Pilot devices can be used toinstall and commission a 3V zoning system, linkage compati-ble air source, universal controller, and all other devices oper-ating on the Carrier communicating network.Additionally, the System Pilot device can serve as a wall-mount-ed temperature sensor for space temperature measurement. Theoccupant can use the System Pilot device to change set points. Asecurity feature is provided to limit access of features for unau-thorized users. See Fig. 3 for System Pilot device details.CCN Tables and DisplayIn addition to the unit-mounted scrolling marquee display, theuser can also access the same information through the CCN ta-bles by using the Service tool or other CCN programs/devices.The variable names used for the CCN tables and the scrollingmarquee menus may be different and more items may be dis-played in the CCN tables. Details on the CCN tables are in-cluded with the local display menus in Appendix A. AppendixA is structured towards the organization of the local display(scrolling marquee) menus. Because of the variety of CCNprograms and devices, the CCN tables, sub-tables, and pointsare referenced within that organization.Fig. 3 — System Pilot User InterfaceForce HierarchyThere is a hierarchy in CCN with regards to forcing a point.Programs and devices write a force at different priority levels.A higher level (smaller number, 1 being the highest) will over-ride a lower level force. The scrolling marquee uses a ControlForce at level 7. The Navigator writes a Service Force which islevel 3. System Pilot and Touch Pilot devices write SupervisorForces at level 4. Network programs can be set to write differ-ent level priority forces.Generic Status Display TableThe GENERIC points table allows the service/installer theability to create a custom table in which up to 20 points fromthe 5 CCN categories (Points, Config, Service-Config, SetPoint, and Maintenance) may be collected and displayed.In the Service-Config table section, there is a table named“GENERICS.” This table contains placeholders for up to 20CCN point names and allows the user to decide which pointsare displayed in the GENERIC points sub-table under the sta-tus display table. Each one of these placeholders allows the in-put of an 8-character ASCII string. Using a CCN interface, en-ter the Edit mode for the Service-Config table “GENERICS”and enter the CCN name for each point to be displayed in thecustom points table in the order they will be displayed. Whendone entering point names, download the table to the rooftopunit control.IMPORTANT: The computer system software (Comfort-VIEW, Service Tool, etc.) that is used to interact with CCNcontrols, always saves a template of items it considers asstatic (e.g., limits, units, forcibility, 24-character textstrings, and point names) after the software uploads thetables from a control. Thereafter, the software is only con-cerned with run time data like value and hardware/force sta-tus. With this in mind, it is important that anytime a changeis made to the Service-Config table “GENERICS” (whichin turn changes the points contained in the GENERIC pointtable), that a complete new upload be performed.SCROLL +-NAVIGATE/EXITMODIFY/SELECTPAGE