46
GB
6795773_01
If the VMF system manages a boiler or one or more heat recovery
units, a VMF-CRP module must be installed to manage them; this
parameter specifi es whether a VMF-CRP expansion board for the
boiler and recovery units is foreseen in the system (for further
information on the type and specifi c settings of each expansion
module, see the VMF-CRP accessory documentation); to set this
value it is necessary to:
(1) Enter modifi cation mode by pressing the
C
key; after
this key has been pressed, the current band value will be
highlighted.
(2) Press the
A
or
B
key to modify the value; the settings of
this function can be:
• ON (presence of VMF-CRP module for boiler and recovery
unit);
• OFF (no VMF-CRP module for boiler and recovery unit).
(3) Press the
C
key to confi rm the value entered; once this
key has been pressed, the current setting will be highlighted
normally, thus indicating that the modifi cation procedure has
concluded.
After the data has been entered, it will be possible to:
- Pass on to the following window by pressing the
B
key.
- Go back to the previous window by pressing the
A
key.
- Press the
D
key to return to the selection of the menus.
• Set the presence of the VMF-CRP recovery unit/ boiler module
The system in the example has a heat
recovery unit installed managed by a
VOC probe; therefore a specifi c VMF-
CRP expansion board has been foreseen;
the correct setting of this parameter in the
example must be at ON.
A
B
C
D
Module boiler/U.R.C.
ESC
ON
In VMF systems, the chiller is activated when there is a heat
output demand by at least one of the thermostats connected
to the fan coils; the chiller can be deactivated when all the
thermostats have fulfi lled their demand; nonetheless the unit can
be switched off with a certain delay respect to the conclusion
of the demand by the thermostats, making it possible to avoid
switching the chiller on and off unnecessarily (the value of this
interval must be from 0 to 120 minutes); to set this value it is
necessary to:
(1) Enter modifi cation mode by pressing the
C
key; after
this key has been pressed, the current interval value will be
highlighted.
(2) Press the
A
or
B
key to modify the delay time to be
applied to switch the chiller off.
(3) Press the
C
key to confi rm the value entered; once this
key has been pressed, the current setting will be highlighted
normally, thus indicating that the modifi cation procedure has
concluded.
After the data has been entered, it will be possible to:
- Pass on to the following window by pressing the
B
key.
- Go back to the previous window by pressing the
A
key.
- Press the
D
key to return to the selection of the menus.
• Set the chiller switch off delay after conclusion of system demand
The proposed example hypothesises that
the chiller remains active for 10 minutes
after all thermostats have been satisfi ed.
A
B
C
D
Delay syandby chiller
ESC
010 min
by fancoil
