Viconics VT7300 Installation Manual (First Release 1000 Series) - Manual (Page 9)

9
Programming and status display instructions
Status display
The thermostat features a two-line, eight-character display. There is a low level back-light level that is always active and
can only be seen at night.
When left unattended, the thermostat has an auto scrolling display that shows the actual status of the system. There is
an option in the configuration menu to lockout the scrolling display and to only present the room temperature and
conditional outdoor temperature to the user. With this option enabled, no local status is given of mode, schedule and
relative humidity.
Each item is scrolled one by one with the back lighting off. Pressing any key will cause the back light to come on. When
left unattended for 10 seconds after changes are made, the display will resume automatic status display scrolling.
To turn on the back light, press any key on the front panel. The back lit display will turn off when the thermostat is left
unattended for 45 seconds
Sequence of auto-scroll status display:
Room & Humidity System mode Schedule status Outdoor temperature Alarms
x.x °C or °F Sys mode Occupied Outdoor Service
XX % RH Auto x.x °C or°F
If humidity display
enabled Sys mode
Cool Unoccup
Network value only
Filter
RoomTemp
x.x °C or °F Sys mode
heat Override
Window
If humidity display is not
enabled Sys mode
off
% RH display is conditional to:
(Humidity display is model and configuration dependent)
• Model with RH sensor built in
• Display function be enabled with RH display parameter. Displayed range is 10 to 90 % RH
Outdoor air temperature
• Display is only enabled when outdoor air temperature network variable is received.
Schedule Status
• Occupied, Unoccupied and Override status are displayed on the scrolling display.
Alarms
• If alarms are detected, they will automatically be displayed at the end of the status display scroll.
• During an alarm message display, the back lit screen will light up at the same time as the message and shut off
during the rest of the status display.
• Two alarms maximum can appear at any given time. The priority for the alarms is as follows:
Service Indicates that there is a service alarm as per one of the programmable binary input ( BI2 )
Filter Indicates that the filters are dirty as per one of the programmable binary input ( BI2 )
Window
Indicates that the outside window or door is opened and that the thermostat has cancelled any cooling or
heating action ( BI1 )
Three status LED’s on the thermostat cover are used to indicate the status of the fan ( any speed ), a call for heat, or a call for
cooling.
Fan coil models
• When any of the fan speeds are ON,
the FAN LED will illuminate.
• When heating & reheat is ON,
the HEAT LED will illuminate.
• When cooling is ON,
the COOL LED will illuminate.
Fig.11 – Hotel models °C/°F Fig. 12 Commercial models with Override