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iO
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Y
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activated, the system will be warned to automatically keep the
temperature always above a value (Protection Temperature) selected
by parameter.
¾
Protection Temperature:
This parameter fixes the minimum
temperature the user will accept.
9
Protection Temperature is measured in ºCelsius.
9
There is no connection between the “Set Temperature”
and the “Protection Temperature”.
9
This is the real temperature to be applied as freezing
protection.
9
Thermostat will turn Off when temperature in the room
reaches “Protection Tempe 1ºC”
OVERHEATING PROTECTION
Æ
Regardless of the status the
thermostat may be (On/Off), when “Overheating Protection” is
activated, the system will be warned to automatically keep the
temperature always below a value (Protection Temperature) selected
by parameter.
¾
Protection Temperature:
This parameter fixes the maximum
temperature the user will accept.
9
Protection Temperature is measured in ºCelsius.
9
There is no connection between the “Set Temperature”
and the “Protection Temperature”.
9
This is the real temperature to be applied as
overheating protection.
9
Thermostat will turn Off when temperature in the room
reaches “Protection Temperature – 1ºC”
A small introduction to the Temperature Control methods used by the Z38i is
detailed below.
HYSTERESIS
Æ
This is one of the control methods the thermostat may use to control a room
temperature. Hysteresis can be used to filter signals so that the output reacts slowly by taking
recent history into account. The only factor to consider when applying this method is the
sensivity range; in this case, by setting this parameter we’ll be setting both the upper and lower
level of the sensivity range (hysteresis).
Next an example: a thermostat controlling a heater may turn the heater on when the temperature
drops below A degrees, but not turn it off until the temperature rises above B degrees. Thus the
On /Off output of the thermostat to the heater when the temperature is between A and B
depends on the history of the temperature. This prevents rapid switching On and Off as the
temperature drifts around a set point.
