Operating Principle - Novatherm AERMEC GLLI10N Manual De Instrucciones

CASSETTE LOCAL NETWORK
The VMF-FCL thermostat has been de-
signed to communicate with all thermo-
stats of the VMF family through a dedicat-
ed serial based on standard TTL logic and
low throughput. This serial communication
is essential for the exchange of information
within small fan coil networks. This is in fact
a network comprising no more than 6 ther-
mostats with a maximum length of about
30 meters. It was designed, in fact, for small
areas where the fan coils (more than one)
need to be controlled from a single con-
trol point. More specifically, this network
always contains a Master (to which a user
interface VMF-E4 is connected) that con-
trols the operation of the Slaves connected
to it, according to the settings made on its
user interface.

OPERATING PRINCIPLE

The fan coil master, or rather the one with
the VMF-E4 user interface connected,
cyclically transmits the following infor-
mation subsequently setting them on
the slave units.
- Regulation Setpoint
- Operating mode (OFF, AUTO, V1, V2,
V3, AUX) (on the On/Off machines)
- Operating season
Therefore the slave fan coils can not oper-
ate (except in particular cases) according
to settings different from those dictated
by the master.
AMBIENT PROBE: the ambient control
probe is not needed on slave fan coils be-
cause these can use the control probe of
the master. However, if you want to avoid
having micro-climates, it can be installed
on the slaves that will then adjust with the
respective probe. In particular cases where
the ambient probe on the master is faulty,
the slave without probe will operate in
emergency mode (similar to the master),
while the slaves with ambient probe will
continue to operate normally.
WATER PROBE: the water temperature
probe can be installed or not on the vari-
ous fan coils of the TTL network. The fan
coils with probe will use this for foreseen
minimum and maximum values control,
while the ventilation will always be ena-
bled on the fan coils without water probe.
40
FCLI
SLAVE
EXTERNAL CONTACT INPUT: this digital
input is inhibited on all slave fan coils while
it is enabled on the master only. If the mas-
ter input is closed, all the slave fan coils of
the zone are switched off.
PRESENCE SENSOR INPUT: the presence
sensor digital input is only active on the
master fan coil
ANTI-FREEZE FUNCTION: the anti-freeze
mode is the only case in which a slave that
is in this status can operate according to
settings are not provided by the master.
LUNGHEZZA MAX.30 (m)
FCLI
FCLI
SLAVE
MASTER
VMF-E4