Low Batteries - Beretta HRT-177WS Manual De Instalacion Y Uso

Other factory set values are:
• Comfort temperature: 21°C
• Economy temperature: 16°C
• Frost protection temperature: 5°C
• Hysteresis OFF: 0,4°C (boiler switch OFF at 0,4°C above
the target)
• Hysteresis ON: 0,2°C (boiler switch ON at 0,2°C below
the target)

LOW BATTERIES

The two supplied batteries will last for approximately 1 year
under a normal usage. When the batteries are low, the re-
lative icon will appear on the display. It is better to change
the batteries on time in order avoid any lack of heating sup-
ply during the day.
Follow the correct positioning of the batteries according to
the internal thermostat battery box indications.
Every time the batteries are removed the thermostat loses
only the time. The programmed times and the set temper-
atures are maintained memorized.
In the case of completely empty batteries, at the moment of
the fi nal switching OFF, the relay position (and therefore the
heat request) remains as it was in that moment
TECHNICAL MENU AND SPECIAL FUNCTIONS
(ONLY FOR EXPERTISE)
The weekly thermostat incorporates a technical parameter-
ized menu accessible only with a password and the use of
this is recommended for expert personnel only.
The parameter settings change the working mode of the
thermostat, therefore the modifi cations are allowed only if
required by the particular installation.
The technical menu is accessible by the main menu under
the PL icon (see encoder paragraph for the access proced-
ure). The password to be selected is the number 53.
Inside the PL menu are present 4 parameters that can be
adjusted as described below:
PAR. DESCRIPTION
CALIBRATION: It is possible to calibrate the
temperature sensor by entering the 01 para-
meter. On the display will appear only the tem-
perature. Use the encoder to increase or de-
crease the temperature. Press the encoder to
enter the new value. From now the thermostat
uses the new value as current room temperat-
01
ure. Please note that for the calibration it is ne-
cessary to have a second thermometer that will
be used as master. This operation is suggested
only if the thermostat is fi xed in a non-appropri-
ate position, therefore it is necessary to modify
the value on the display to be according the real
room temperature.
15
EN