Galletti LED 503 Manual Del Usuario página 19

LED 503
VALVE
The controller can manage 2- or 3-way ON/OFF valves with actuator power of
230 V.
OPENING
Valve opening is controlled depending on the operating setpoint and air
temperature setpoint
COOLING
HEATING
WATER CONTROL
The checking of water temperature to enable valve opening is a function that
concerns only configurations with 3-way valves and electrical heater. In such
configurations the water temperature will be checked in the following cases:
> Heating with electrical heater: operation of the electrical heater will force
the fan to switch on; it is therefore necessary to prevent excessively cold
water from passing through the terminal.
> Post-ventilation due to switching off of the electrical heater: this function
will be maintained until the set time has elapsed, even if the operating
mode is changed. During post-ventilation the water temperature enabling
signal will coincide with the one seen for fan operation.
È severamente vietata la riproduzione anche parziale di questo manuale / All copying, even partial, of this manual is strictly forbidden
ELECTRICAL HEATER
The electrical heater is a device used when necessary in the heating phase.
SELECTION
If provided for in the configuration, the electrical heater can be selected in the
heating mode by pressing the FAN
ACTIVATION
If the electrical heater is selected by the user, it will be activated on a call from
the thermostat based on the room temperature.
Air temp
Air temp
NB: switching it on will force the fan on as well
WATER CONTROL
Enabling of the electrical heater is linked to the water temperature. The related
enabling logic is described below
HEATING
This enabling signal will not be given if the water probe is not present or
disconnected.
Water temp
19
and MODE keys.
ON
OFF
FC66002953 - rev. 02
G B
Air temp
Water temp