Daikin FWEC2 Manual De Instalación Y Funcionamiento página 23

VALVE
The controller can manage 2 or 3-way On/OFF type valves,
with 230V voltage.
OPENING
The valve opening is controlled according to 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 confi gurations with 3-way
valves and electrical heater.
In such confi gurations 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 nec-
essary to prevent excessively cold water from passing
through the unit.
■ 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.
DISPLAY
The active valve indication on the display will be shown by
the symbol
ELECTRICAL HEATER
The electrical heater is a device used where necessary in the
heating mode.
SELECTION
If provided for in the confi guration, the electrical heater can be
selected in the heating mode by pressing the Sel
ACTIVATION
FWEC2
Advanced electronic controller
FC66002764
All manuals and user guides at all-guides.com
If the electrical heater is selected by the user, it will be ac-
tivated on a call from the thermostat based on the room
temperature
N.B.: switching it on will force the fan on as well
WATER CONTROL
Enabling of the electrical heater is tied to the water tempera-
ture. The related enabling logic is described below
The enabling signal will not be given if the water sensor is
either not present or disconnected
Air temp.
DISPLAY
Air temp.
The display will show the following information
■ electrical heater selected by the user:
■ active electrical heater:
ECONOMY
The Economy function corrects the setpoint by 2.5°C and
forces the fan to run at the minimum available speed to reduce
unit operation.
■ Cooling: setpoint + 2.5°C
■ Heating: setpoint -2.5°C
ACTIVATION
This function can be activated by pressing the key
DISPLAY
The Economy function is shown
on the display by the symbol
Water temp.
MINIMUM TEMPERATURE CONTROL
This logic makes it possible to keep the room temperature from
falling too far when the thermostat is off by forcing the unit into
the heating mode if necessary and for the time required.
If the electrical heater is present, it will be used only if it was
previously selected as a resource in the heating mode.
SELECTION
When the thermostat is off, you can select the minimum
temperature control by pressing at the same time the keys
The same key combination disables this function.
ACTIVATION
key
If this control is selected, the unit will switch on when the room
temperature falls below 9°C.
Air temp.
HEATING
ON
OFF
fl ashing symbol
.
Water temp.
steadily symbol
Air temp.
Installation and operation manual
7