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speed 2 deactivates when the valve is at ≤ 40% (50% - 20% of 50) of its total aperture.
speed 3 deactivates when the valve is at ≤ 80% (100% - 20% of 100) of its total aperture.
N.B.: parameters
I29
to
I34
are not used in this application.
18. Manual speeds and ventilation maintenance with no control
The regulation speed type can be selected automatically or manually, at speeds 1, 2 and 3. To see how to select the type of
ventilation, see
“Fancoil operating mode” page 9
.
If the regulation speed is manual, it stays at the set speed once started throughout regulation.
When it reaches the setpoint, the fan stops if
I28
=0.
You can keep speed 1 active or the manual speed selected, regardless of the type of speed used in regulation, even if the
regulation itself does not require it. This maintains constant ventilation to keep the air circulating.
To keep speed 1 active in cooling without regulation, set
I28
=2.
To keep speed 1 active in heating without regulation, set
I28
=3.
To keep speed 1 active regardless of the season and without regulation, set
I28
=1.
To keep manual speed selected active in cooling without regulation, set
I28
=5.
To keep manual speed selected active in heating without regulation, set
I28
=6.
To keep manual speed selected active regardless of the season and without regulation, set
I28
=4.
To stop ventilation once the setpoint is reached, set
I28
=0.
19. Fan boost
The boost function eliminates the problem of incorrect motor starting at low speeds.
Set
I37
=1, this starts the motor at maximum speed for 1 second, after which it runs at the regulation speed.
If this option is not wanted, set
I37
=0.
When
I37
=0, the motor starts directly at the regulation speed.
20. Minimum thermostat
In all heating modes, when a digital input is set as minimum thermostat (
M03
=6 or
M05
=6) or remote sensor is configured as
minimum thermostat
M07
=2 or
M09
=2 or
M11
=2, ventilation does not start until the minimum thermostat is closed.
For digital contacts, the minimum thermostat is considered closed, in relation to the position of the contact and the digital
contact logic (see
“10. Digital and analogue input logic” page 20
).
For the analogue inputs, the logic is as follows:
Minimum
thermostat
open
Minimum
thermostat
closed
I17
-
2°C
I17
Temp.
water coil
On startup, if the temperature of the heating coil is between
I17
and
I17
- 2, the minimum thermostat is deemed to be open.
Icons , and
turn on in sequence when the minimum thermostat is open during heating mode without electric resist-
ance.
N.B.: if the electric resistance is present, the minimum thermostat function is not considered. The fan is activated immediately
when the electric resistance is activated even if the minimum thermostat is considered to be open.
If no regulation is present or in cooling mode, the minimum thermostat is not considered.
