Viconics VT7200 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
RoomTemp Sys mode Occupied Outdoor Service
x.x °C or °F Auto x.x °C or°F
Sys mode
Cool Unoccup
Network value only
Filter
Sys mode
heat Override
Window
Sys mode
off
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 )
Two status LED’s on the thermostat cover are used to indicate a call for heat or a call for cooling.
Zoning models
• When heating & reheat is ON,
the HEAT LED will illuminate.
• When cooling is ON,
the COOL LED will illuminate.
Fig.11 – Zoning models