32
ACCESSORIES
Valve management includes an
ON/OFF
control with valve shut signal when the set-point has been reached accor-
ding to the hysteresis cycles of the
heating/cooling
graphs. The valves required are the normally closed type with
endothermic actuators and opening/closing times of approx.
3 minutes
.
The fan is managed with the time settings described in the
VENTILATION CONTROL
section in order to keep the
ambient temperature constantly monitored.
THERMOSTAT MODE HYSTERESIS:
The hysteresis value is
1°C
for the controls on the machine and
0.6°C
for the wall-mounted controls.
Temp. acqua
Position of the water probe
2.3: ELECTRIC HEATING ELEMENTS
Electric heating elements can only be used with the upgraded thermostat in the configuration with 2 pipes. The elec-
tric heating elements can operate either
in substitution
or as
an integration
:
- HEATING ELEMENTS IN SUBSTITUTION:
Heating is only obtained with the heating elements. In this case, the
output of the 2nd valve is now used to pilot a bank of electric heating elements using a suitable relay. After the hea-
ting elements have been turned off, there is a post-ventilation phase lasting 90 seconds to allow them to cool down.
- INTEGRATED HEATING ELEMENTS:
The heating element and the valve operate together. Heating occurs with:
the heating elements
if the
H
2
O
temperature is less than
39°C
; with the water, if the temperature is
39.5°C
or more,
with a central hysteresis of
1°C (±0.5°C)
in relation to the
39°C
.
Heating
regulation with electric heating elements
Water temp.
Operating
hysteresis
Temperature
Heating elements in sobstitutions
Valve always off
Integrated heating in sobstitutions
SEE NOTE
Water at 39.5° C
Water at <39.5° C
Water at 41° C
Temperature
Operating
hysteresis
Heat mode operation
Cool mode operation
Summary of Contents for TOP FAN
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