Thermostats Crestron
CHV-TSTAT and CHV-THSTAT
Slot 6 – System Configuration (continued)
SIGNAL I/O
SIGNAL
TYPE
DEFINITION
Output
Analog
Reports the interstage differential in tenths of a degree. This is
the proportional temperature error to trigger the second
(Auxiliary) stage. The scale (Fahrenheit or Celsius) is based on
the current setting in the unit.
Values range from 0.5 to 8.0 (5°F to 30°F); or 0.25 to 4.5 (3° to
4.5°C).
HP_BalancePoint
AUX_BalancePoint
Output
Analog
Reports the heat pump balance point and auxiliary balance point
in tenths of a degree. The scale (Fahrenheit or Celsius) is based
on the current setting in the unit.
HP values range from 0 to 890 (0 to 89
˚
F); 0r –180 to +310
(-
18
˚
C to 31
˚
C).
The heat pump balance point is the outdoor temperature below
which heat pump operation is locked out, and auxiliary heat runs
in place of it.
The auxiliary balance point is the outdoor temperature above
which auxiliary heat is locked out. Aux values range from 0 to
900 (0
˚
to 90
˚
F); or –170 to +320 (-17
˚
C to 32
˚
C).
LCD_Contrast
Output
Analog
Reports the LCD screen contrast.
Values range from 1 (lightest) to 10 (darkest).
TempDispOffset
Output
Analog
Reports the temperature offset in tenths of a degree. The offset
is the number of degrees added or subtracted from the actual
sensed temperature. The scale (Fahrenheit or Celsius) is based
on the current setting in the unit.
Values are as follows:
Fahrenheit: -60 to +60 (-6
˚
to +6
˚
F)
Celsius: -30 to +30 (-3.0
˚
to +3.0
˚
C)
This temperature offset changes the actual regulated
temperature, not just the displayed temperature. The offset is set
to “0” as shipped from the factory.
AutoDeadband Output
Analog
Reports the auto mode deadband value in tenths of a degree.
The scale (Fahrenheit or Celsius) is based on the current setting
in the unit.
Values are as follows:
Fahrenheit: 20 to 60 (2
˚
to 6
˚
F)
Celsius: 10 to 30 (1
˚
to 3
˚
C)
Half degrees Celsius mode: 10 to 35 (1
˚
to 3.5
˚
C)
The deadband sets the minimum separation in auto mode
between the heat and cool setpoints, or the changeover band in
single point auto mode.
SlabRegulation
Output
Analog
Reports the slab temperature regulation value. Values range
from 1 to 6.
A lower number signifies more frequent cycles and faster
response (tighter regulation), while a higher number signifies less
frequent cycles and slower response (looser regulation).
InterstageDifferential
Example Programs
The example program for the thermostat is available from the Crestron FTP site
(ftp://ftp.crestron.com/Examples). Search for CHV-THSTAT_with_5-
2_Scheduler_Sample_Program.zip.
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Thermostats: CHV-TSTAT and CHV-THSTAT
Operations and Installation Guide – DOC. 8163C