AMX ViewStat - Manual (Page 49)

Set Up and Configuration
43 ViewStat Communicating Thermostat
Balance Point Set-Up
Balance points limit heat pump operation when the outdoor temperature is too high or too low. It requires an
optional support module with an outdoor temperature sensor. Consult a qualified HVAC service technician
before changing any of the values in this Sub-Menu (Sub-Menu not shown).
These values are adjustable, but are only used by the thermostat when it has been configured to operate as a
heat pump, and when a remote outdoor temperature sensor (with address #1) is wired to the thermostat (see the
Heat Pump Applications section on page 37 for details).
Display Set-Up
Here the temperature scale can be changed to °C or °F, and the temperature settings can be setup to always
display or only when being changed (FIG. 38). The message display, when not being used for Thermostat Set-
Up will, by default, scroll through three messages showing the status of the mode, fan, and equipment output.
A fourth, date and time, can also be displayed in the scroll list.
FIG. 37 Backlighting set-up
Balance Point Options
LOW BALANCE POINT the outdoor temperature below which compressor terminals will not be energized.
HIGH BALANCE POINT the outdoor temperature above which the auxiliary heat terminal will not be ener-
gized in the HEAT mode (does not effect Emergency Heat operation).
Display Set-Up Options
TEMPERATURE SCALE all temperatures displayed including room temperatures and set points can be
°F or °C.
SHOW TEMPERATURE SET
POINTS ALWAYS keeps the temperature settings visible on the display at all times.
SHOW TEMPERATURE SET
POINTS ONLY IF CHANGED displays the temperature settings (heat and/or cool) only when the user
changes them. The first press of either the up or down adjust buttons will dis-
play the settings.
SHOW DATE AND TIME the message display will, by default, scroll three messages showing the status
of the mode, fan and equipment outputs. A fourth, date and time, can also be
displayed in the scroll list.
On Only When
More
Backlight
Set Up More
On With Every
Change Next
EXIT
Back
Set, 1=lighter
2-darker
Needed
Disable
More
toggle between 1 and 2
using the Up and Down
buttons