Frigor Tstat Series, Manual

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Tstat Series
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Code Description (Range, Default)
Hdb
Cdb Heating & Cooling Deadbands (1-200, 10)
If there is one setpoint, the heating setpoint follows the cooling setpoint and is calculated by:
Heating Setpoint = Setpoint - Heating Deadband.
Cooling Setpoint = Se Cooling Deadband
If there are two setpoints, heating and cooling are separately adjusted. The setpoints are calculated as follows:
Heating Setpoint = Max( Cooling Se Cooling Deadband , Heating Setpoint )
Cooling Setpoint = Min( Cooling Setpoint, Heating Setpoint - Cooling Deadband)
The min value for Cdb is 1.0° (C or F) to ensure that simultaneous heating and cooling is never allowed. The maximum value is arbitrarily
set to 20.0°. The deadband values are in increments of 0.1° (i.e. 20 means 2.0°) and are in the same units (C or F) as the tstat.
UNITS Degrees C/Degrees F (0-1, - )
The display can be switched to show Degrees C or Degrees F. 0 = C, 1 = F.
FAn Number of Fan Speeds to show on the display (0-3, 3)
The number of fan speeds allowed. Fan = 3, user will see “Off, -1-, -2-, -3-, Aut” Fan = 2, user will see “Off, -1-, -2-, Aut” Fan = 1, user will
see “Off, -1- , Aut” , Fan = 0, user will see “Off, On”
nHd Night Heating Deadband (0-35, 10) for deg C, (0-95, 10) for deg F
nCd Night Cooling Deadband (0-99, 10) for deg C and F
When the tstat is in unoccupied mode, and APP is set to 0, the heating setpoint is adjusted downwards by the amount of the nHd. The
cooling setpoint is adjusted upwareds by the amount of nCd. The night deadband values are in increments of 1° (i.e. 10 means 10°) and
are in the same units (C or F) as the tstat.
Note: The night heating setpoint is prevented through an internal software interlock from being set below 5°C, regardless of the user heat-
ing setpoint and the value stored in NHS.
nSp
APP Application (0-1, 0)
0 - OFFICE applications mode
The night time setpoints are speci
fi ed value
Night Heating Setpoint = nHS value.
Night Cooling Setpoint = nCS value.
1 - HOTEL or RESIDENTIAL applications mode
The night time setpoints are a speci
fi ed deadband in relation with the day time setpoints
Night Heating Setpoint = Cooling Setpoint - nHd value.
Night Cooling Setpoint = Cooling Se nCd value.
POS Power on setpoint (0-255, 20) for deg C, (0-255, 68) for deg F
Certain applications require the thermostat to power up with a known setpoint that is stored through a power outage. This feature is useful
in some of the transducer modes where the central DDC controller can cycle the power to the thermostats to reset the room setpoints to a
known value every day. The power on setpoint value is in increments of 1° (i.e. 20 means 20°) and is in the same units (C or F) as the tstat.
POn Power on Mode (0-3, 3)
This setting allows the thermostat to power up in one of three modes: 0 = power off, 1 = power up in on mode, 2 = last value (default), 3 =
auto mode. The on and off settings are self explanatory and are useful in certain DDC applications where the central controller can cycle
the power to each thermostat to sweep them off each evening for example. The default value is “last value” and will cause the thermostat
to power up in whatever state it was in before the power outage.