Vemer Iride, User Manual

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Iride Chronothermostat User Manual
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
Iride has got two types of regulation:
On/off regulation
During on/off regulation the chronothermostat 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+DIFF SET
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.
Proportional regulation (only in heating)
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:
• the band, which represents the temperature values with whom to perform the
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 (if setpoint-band > environment temperature) or always off (if se
band < measured temperature).
English