Commands And Visualisation; Control Logic - AERMEC VMF-E19 Manuel D'utilisation Et D'installation

COMMANDS AND VISUALISATION

The interfaces that can be associated with the VMF-E19 thermostat are as follows:
VMF-E2 USER INTERFACE
(A) Speed selector
(B) Temperature selector
(C) Operating mode indicator light
(D) Ventilation request indicator light
VMF-E3 USER INTERFACE
(A) Operating mode selector
(B) BLUE/RED led
(C) WHITE/GREEN led
(D) Setpoint temperature selector
VMF-E4X USER INTERFACE
(A) ON/OFF key
(B) Ventilation speed change key
(C) Temperature change key
(D) LCD

CONTROL LOGIC

The VMF-E19 thermostat can equip the fan coils with multi-speed asynchronous motors and brushless motors.
ADJUSTMENT LOGIC
There are two options for the thermostat operating logic.
3-LEVEL THERMOSTAT
The figure below shows the fan operating in Automatic mode (selector on AUTO) on the basis of the proportional error.
In Manual mode (selector on position V1, V2 or V3), the fan follows On-Off cycles at the selected speed, whereas in Auto it follows
On-Off cycles according to the thresholds of speed V1. If the fan coil is equipped with an electric heater, each single activation of
the heater will require a pre-ventilation phase of about 20" at speed V1. Once the request for ventilation with heater enabled has
been fulfilled, there will be a 60" post-ventilation phase at speed V1.
The paragraph "Enabling ventilation" explains the fan enabling/disabling logic in relation to the temperature of the water in the
heat exchanger, whereas "Electric heater" explains how ventilation with an active heater works.
The dead band shown in the figure may be equal to 2°C or 5°C, depending on the setting of dip 7.
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AVMFE19LJ 2201 - 5779300_06
V3
V2
V1
Heating setting
SET CALDO
(C)
(B)
(A)
(A)
(B)
Dead band
Zona morta
Zona morta Dead band
Cooling setting
SET FREDDO
(B)
(D)
(A)
(C)
(D)
(D)
(C)
V3
V2
V1
t °C