CVS-21HA.rev.03 29
The alarm pilot light turns on when the alarm is activated.
HIGH ALARM
The controller activates the alarm when the room temperature rises above
the value “set point+ high offset ”.
To adjust alarm high offset:
Set selection knob to ALARM OFFSET — LOW. The current low
offset appears flashing on the display.
Using adjustment knob, adjust the offset to the desired value.
The low offset can be adjusted between 0.5
o
and 40.0
o
F (0.3° and
22.0°C).
LOW ALARM
The controller activates the alarm when the ambient temperature falls below
the value “set point - low offset ”.
To adjust alarm low offset:
Set selection knob to ALARM
OFFSET — HIGH. The current
high offset appears flashing on
the display.
Using adjustment knob, adjust the
offset to the desired value.
The high offset can be adjusted
between 0.5° and 40.0°F (0.3° and
22.0°C).
ALARMS
POWER FAILURE OR FAULT IN THE SUPPLY CIRCUIT
The controller activates the alarm in the event of a power failure or a fault
in the supply circuit.
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