Carrier 48JC04-06, Service And Maintenance Instructions

Page: 33 / 68

33
SYSTEMVU CONTROL SYSTEM
The SystemVu™ control is a comprehensive unit-management
system. The control system is easy to access, configure, diag -
nose and troubleshoot.
The SystemVu control system is fully communicating and
cable-ready for connection to the Carrier Comfort Network
®
(CCN), Carrier i-Vu
®
, and Third Party BACnet
1
building man -
agement systems. The control provides high-speed communi -
cations for remote monitoring via the Internet. Multiple units
can be linked together (and to other Direct Digital Control
(DDC) equipped units) using a 3-wire communication bus.
The SystemVu control system is easy to access through the use
of a integrated display module. A computer is not required for
start-up. Access to control menus is simplified by the ability to
quickly select from 7 main menu items. An expanded readout
provides detailed explanations of control information. Only six
buttons are required to maneuver through the entire controls
menu. The display readout is designed to be visible even in
bright sunlight. See Fig. 54.
SystemVu Interface
This integrated device is the keypad interface used to access
the control information, read sensor values, and test the unit.
The interface is located in the main control box.
Through the SystemVu interface, the user can access all of the
inputs and outputs to check on their values and status, config -
ure operating parameters, and evaluate the current decision sta -
tus for operating modes. The control also includes an alarm
history which can be accessed from the display. The user can
access a built-in test routine that can be used at start-up com -
missioning and troubleshooting.
Air Temperature Sensors
The SystemVu controller uses thermistors to sense tempera -
tures used to control operation of the unit. Air temperatures are
measured with 10k thermistors. This includes supply-air tem -
perature (SAT), outdoor-air temperature (OAT) and return-air
temperature (RAT) sensors. See Fig. 55 for location of these
sensors.
Additional SystemVu Installation and Trouble-
shooting
Additional installation, wiring and troubleshooting information
for the SystemVu Controller can be found in the following
manual: 48/50JC 04-06 Ultra High Efficiency Single Package
Rooftop Units with SystemVu™ Controls Version X.X Con -
trols, Start-up, Operation and Troubleshooting Instructions.
Fig. 54 — SystemVu Control
1. BACnet is a trademark of ASHRAE.
J1
J2
J3A J3B J3C J3D J3E J4 J5 J6 J7 J8 J9
J10
TB5
J11
J12
J13
J14
TB4 J15 J16 J17 J20 J18 TB3 TB2 TB1