Galletti EVO Manual De Instalacion Y Uso página 36

EVO
ADJUSTMENT LOGIC
COOLING/HEATING SWITCHING
There are 4 different and alternative logics to select the
thermostat operating modes, according to the controller
configuration setting:
Local: chosen by the user pressing the MODE key
Distance: based on the status of digital input DI1
depending on the water temperature
Estate
.
In case of a water probe alarm, the mode
control returns temporarily to Local mode.
depending on the air temperature
Inverno
Set - ZN/2
Where:
Set is the temperature set with the arrows
NZ is the neutral zone
The operating mode of the thermostat is indicated on the
display by the symbols COOLING and HEATING.
VENTILATION
GENERAL ASPECTS
The control can manage two types of ventilation:
step ventilation with a set number of selectable speeds
(3 or 4);
modulating ventilation with variable speed between 0%
and 100%
The use of one or the other type of control depends on the
type of ventilator (step or modulating) installed on-board
the machine. Step adjustment itself can follow two different
logics based on the type of valve/s (ON/OFF or modulating).
FC66003554
Rev 00
Controller for units
Inverno
t. a
.
Estate
t. aria
Set + ZN/2
IT IS strictly forbidden to reproduce this manual, even partially
While, with modulating ventilation, in order to
achieve correct adjustment, the controller also
takes into account the number of speeds that
are implicitly identified by the value assigned
to the configuration parameter for the type of
unit. Even though it may seem contradictory
to associate "speed number" with modulating
ventilation, this information is essential to
letting the control system know if the unit can
operate on natural thermal convection (in
other words: 2x1 unit, therefore 4 speeds) or
not. Based on this information, modulating
a ventilation adjustment follows different logics.
In brief, the automatic adjustment logics managed by the
controller (and described in detail here below) are as follows:
step ventilation with 0N/OFF valve (or not installed) and 3
speeds, in cooling and heating mode;
step ventilation with 0N/OFF valve (or not installed) and 4
speeds, in summer and winter mode;
step ventilation with modulating valve and 3 speeds, in
summer and winter mode;
step ventilation with modulating valve and 4 speeds, in
summer and winter mode;
modulating ventilation adjustment with ON/OFF valve, in
summer and winter mode;
modulating ventilation adjustment with modulating valve.
STEP VENTILATION
Use the UP/DOWN keys to choose from the following
speeds:
Automatic SPD.:depending on set temperature and
room air temperature;
Extra-low spd: can only be selected if the unit is 2X1
(4 speeds)
Low SPEED
Medium SPD.
High SPD.
USER MANUAL EN
10