46
TC5-8SDA rev.03
ALARM SETTINGS
The controller sets off an alarm in the case of a power failure, a fault
in the supply circuit or a high or low temperature. Temperature
alarms are defined according to the set point as shown in the diagram
below.
Room
Temperature
Set Point
High Alarm Offset
Time
High Temperature Alarm
Low Alarm Offset
The situation changes for high temperature alarms, however, when
the outside temperature is greater than the set point. In this case, the
set point is replaced by the outside temperature as the reference
point. This means an alarm is set off when the indoor temperature
reaches Outside Tempe High Alarm Offset. Internal switch #
6 must be set to ON to use this feature. A third parameter, called the
critical high temperature, is defined to continue monitoring the indoor
temperature for high temperatures. When the indoor temperature
reaches the critical high temperature (defined as an absolute value),
an alarm is set off.
Adjusting the Alarm Settings
The high and low alarm offsets range from 0.5
o
F to 40
o
F. The critical
temperature ranges from -40.0°F to 99.9°F (-40.0°C to 37.7°C).
Set the selection knob to
ALARM — OFFSETS / CRITI-
CAL
. The current low alarm
offset flashes on the display,
alternating with the word
"
LO
".
