Orbis CHRONOS - Page 61

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CHRONOS Programmable Thermostat User Manual
iii. the month (1…12)
iv. the hour
6. Once all parameters are set, to exit and to go back to the programming menu, press for
a short time the key
.
To exit and to go back to the normal operation press for a long time the key
or wait
for the time-out expiration (30 seconds about).
REGULATION TYPE
The Chronos has got two types of regulation:
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During on/off regulation the programmable thermostat measures once a minute the
environment temperature and it carries out the regulation on the basis of the following
logic:
relay ON
SET-DIFF SET
relay OFF
Temperature
increasing
relay ON
SET+DIFFSET
relay OFF
Temperature
increasing
heating mode cooling mode
where SET represents the setpoint and DIFF the hysteresis (useful to avoid continuous
switches on/switches off dangerous for the system in proximity to the reaching of the
setpoint).
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In heating mode, the on/off regulation is available and also the proportional regulation
which in some systems allows a more precise regulation to obtain a constant
temperature.
This regulation requires to specify two parameters:
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proportional regulation. The band is centered on the setpoint and it can have
values between 0.5°C and 5°C; outside these values the heating will be always on