Carrier 48LC 04 Controls, Start-up, Operation And Troubleshooting

Also see for 48LC 05: Controls, Start-Up, Operation and Troubleshooting Service and maintenance instructions Service and maintenance instructions

Carrier 48LC 04 Controls, Start-up, Operation And Troubleshooting Manual pdf 4 page image

4Accessory Navigator DisplayThe accessory hand-held Navigator display can be used with the48/50LC units. (See Fig. 2.) The Navigator display operates thesame way as the Scrolling Marquee device. The Navigator displayis plugged into the LEN (local equipment network) port on eitherCIB or the J3 port on the ECB (economizer control board).Run StatusService TestTemperaturesPressuresSetpointsInputsOutputsConfigurationTime ClockOperating ModesAlarmsE N T E RE S CM O D EAlarm StatusTIMEEWTLWTSETP1 2 . 5 85 4 . 6 ° F4 4 . 1 ° F4 4 . 0 ° FN A V I G A T O RC o m f o r t L i n kC06321Fig. 2 -- Accessory Navigator DisplayOperationAll units are shipped from the factory with the Scrolling Marqueedisplay, which is located in the main control box. (See Fig. 1.) Inaddition, the ComfortLink control also supports the use of thehandheld Navigator display.Both displays provide the user with an interface to theComfortLink control system. The displays have up and downarrow keys, an ESCAPE key and an ENTER key. These keys areused to navigate through the different levels of the displaystructure. The Navigator display and the Scrolling Marquee operatein the same manner, except that the Navigator display has multiplelines of display and the Scrolling Marquee has a single line. Allfurther discussions and examples in this document will be based onthe Scrolling Marquee display. See Table 2 for the menu structure.The four keys are used to navigate through the display structure,which is organized in a tiered mode structure. If the buttons havenot been used for a period, the display will default to the AUTOVIEW display category as shown under the RUN STATUScategory. To show the top-level display, press the ESCAPE keyuntil a blank display is shown. Then use the up and down arrowkeys to scroll through the top-level categories. These are listed inAppendix A and will be indicated on the Scrolling Marquee by theLED next to each mode listed on the face of the display.When a specific mode or sub-mode is located, push the ENTERkey to enter the mode. Depending on the mode, there may beadditional tiers. Continue to use the up and down keys and theENTER keys until the desired display item is found. At any time,the user can move back a mode level by pressing the ESCAPE key.Once an item has been selected the display will flash showing theitem, followed by the item value and then followed by the itemunits (if any).Items in the Configuration and Service Test modes are passwordprotected. The display will flash PASS and WORD when required.Use the ENTER and arrow keys to enter the four digits of thepassword. The default password is 1111.Pressing the ESCAPE and ENTER keys simultaneously will scrollan expanded text description across the display indicating the fullmeaning of each display point. Pressing the ESCAPE and ENTERkeys when the display is blank (MODE LED level) will return thedisplay to its default menu of rotating AUTO VIEW display items.In addition, the password will need to be entered again beforechanges can be made.Changing item values or testing outputs is accomplished in thesame manner. Locate and display the desired item. If the display isin rotating auto-view, press the ENTER key to stop the display atthe desired item. Press the ENTER key again so that the item valueflashes. Use the arrow keys to change the value of state of an itemand press the ENTER key to accept it. Press the ESCAPE key andthe item, value or units display will resume. Repeat the process asrequired for other items.There are some points that can be forced from the ScrollingMarquee or the Navigator. If the user needs to force a variable,follow the same process as when editing a configuration parameter.A forced variable, regardless where the force has come from willbe displayed with a blinking “.” on a Scrolling Marquee and ablinking “f” on a Navigator following its value. For example, ifeconomizer commanded position (EC.CP) is forced, the Navigatordisplay shows “80f”, where the “f” is blinking to signify a force onthe point. The Scrolling Marquee display shows “80.” Where the“.” is blinking to signify a force on the point. Remove the force byselecting the point that is forced with the key ENTER and thenpressing the up and down arrow keys simultaneously.Depending on the unit model, factory-installed options andfield-installed accessories, some of the items in the various Modecategories may not apply.System Pilott and Touch Pilot DevicesThe System Pilot device (33PILOT-01) and Touch Pilot device(33CNTPILOT) can be used as CCN communicationuser--interfaces. These devices can be put on the CCN bus andaddressed to communicate with any other device on the network.Unlike the Scrolling Marquee and Navigator, these pilots read theunit’s CCN tables and its CCN points can be monitored, forced, orconfigured. The Pilot devices can be used to install andcommission a 3V zoning system, linkage compatible air source,universal controller, and all other devices operating on the Carriercommunicating network.Additionally, the System Pilot device can serve as a wall-mountedtemperature 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 forunauthorized 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 tablesby using the Service tool or other CCN programs/devices. Thevariable names used for the CCN tables and the Scrolling Marqueemenus may be different and more items may be displayed in theCCN tables. Details on the CCN tables are included with the localdisplay menus in Appendix A. Appendix A is structured towardsthe organization of the local display (Scrolling Marquee) menus.Because of the variety of CCN programs and devices, the CCNtables, sub--tables, and points are referenced within thatorganization.48/50LC