Local Ufb_W Network - AERMEC UFB W Manuel D'utilisation Et D'installation

AMBIENT PROBE NOT FITTED (4 PIPES)
In this case the thermostat operates as follows:
OFF Mode - Aux
• The valves are open
• The fan is off
AUTO Mode, V1, V2, V3:
• The operating season is decided based on the
temperature selector's position, activating the
respective valve as shown in the figure:
Opening of cold water valve, ventilation
period proportional to the deviation from
the median position
• In this case, ventilation takes place according to
some ON-OFF cycles, increasing the ON phase
starting from the central position. This way it is
possible to request maximum ventilation with
the selector in the minimum position for the
cooling operating season, and similar ventilation
can be at a maximum with the selector in the
maximum position for the heating operating
season. The total duration of the ON-OFF cycle
is always 5'20". The following table shows some
examples of duration of the various ON and OFF
cycles base do the position of the temperature
selector:
CONDENSATE DISCHARGE CONTROL:
The thermostat monitors the "CONDENSATE
DISCHARGE" CONTACT, which derives from
the evacuation pump for the condensate that
forms in the tray of the cassette. In the event of
faults that can cause the water level to rise,by
means of the signal coming from the pump
43.

LOCAL UFB_W NETWORK

VMF E4
The UFC control card has been designed for
communication with all the thermostates of
the VMF family through a dedicated serial
network based on TTL logical standards and
low throughput. This serial communication is
indispensable for the exchange of information
Min. Val.
Val.Min.
SETPOINT
4-PIPE SYSTEM VENTILATION CYCLES, AMBIENT PROBE NOT FITTED
Min Val
20°C
Max Val
Max Val
float, the control tries to reduce the formation
of condensate by closing the valve, keeping the
ventilation active and signalling the fault (see the
coding of alarms from the LED card).
The control will restore normal cassette function
when the float in the tray returns to resting
position.
MAX. LENGTH 30 [m]
MODBUS TTL
UFB MASTER
within small air treatment unit networks. This
network consists of more than 6 thermostats
with a maximum length of about 30 meters.
It was designed, in fact, for small areas where
the air treatment units (more than one) need
to be controlled from a single control point.
Max. Val.
Val.Max.
Opening of cold water valve, ventilation
period proportional to the deviation from
the median position
5'20"
Null
5'20"
5'20"
UFB SLAVE #1
More specifically, this network always contains
a Master (to which a user interface VMF-E4 is
connected) which controls the operation of the
Slaves connected to it, according to the settings
made on its user interface.
IUFBTY 1601 - 5495900_01
Change the setpoint value.
Null
5'20"
Null
Null
UFB SLAVE #2
32