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12 - FACTORY OPTIONS AND ACCESSORIES
12.16 - Zoning of the air fl ow
This option allows the management of the air fl ow of the unit to
condition up to 4 diff erent zones with a minimum air fl ow of 35% (all
of them in same operating mode: heating or cooling). This function
allows to adapt the indoor air fl ow to the installation requirements.
Note: zoning is only possible with plug-fans.
Regulation gives the control signal to the dampers installed in
each zone (dampers and servomotors for those dampers not
supplied). The unit modifi es the air fl ow and capacity depending
on information coming from sensors in each zone and considering
active zones in each moment.
The option includes 4 zone terminals (one for each zone), the
additional control board supplied in an independent box to be
connected with the 4 terminals, the unit board and also to the
servomotors that control dampers in each zone (dampers and
servos not supplied).
The temperature information for each zone is coming from
temperature sensor integrated inside each zone terminal. It is not
needed to install any extra ambient sensor.
Note: There is a new option with constant supply pressure that
extends the possibilities for multi-zone management. Available
upon request.
Zone terminals
These terminals are the same as the user's terminal (optional).
The main screen shows the ambient
temperature, current operating mode of the
unit, time and day of the week.
The following screen shows the temperature
setpoint for this zone in the current operating
mode.
This screen can also show the zone that corresponds to the
terminal, the regulation band associated with the temperature
setpoint, the active alarms by means of codes and the delay set
for the opening/closing of the damper.
These terminals also allow the schedule programming.
With the air zoning, the graphic terminal it also provides information
on setpoints for each zone.
Zoning box connections
The control board of the air zoning is assembled in a separate
box from the 50FF/FC unit.
This board is connected in series on the Field-Bus of the main
board of the "50FC" control, placed on the electrical cabinet of
the unit.
Electrical
cabinet
zone 1
(addr.11)
zone 2
(addr.12)
zone 3
(addr.13)
zone 4
(addr.14)
The installer must carry out the following connections:
■ Connection of the zone terminals:
- Power supply (the same as the control board) at 230Vac
50/60Hz (L&N): 2 wires (section 0.5 at 1.5 mm
- Communication (RX+/TX+ & RX-/TX-): shielded cable type
AWG20 or AWG22 with 1 braided pair + drainwire + shielding
(e.g., model BELDEN 7703NH).
Zone terminals can be installed at a maximum distance of 100
metres from the zoning box.
These terminals are configured with their corresponding
address in the factory. In the unlikely event of a communications
failure the screen will display "Cn". Please make sure to check
connections and the fi rmware version.
■ Connection of the servomotors for the supply dampers:
- 5 wires (section 0.5 at 1.5 mm
■ Connection to the electrical cabinet of the 50FF/FC unit:
- Power supply: 230Vac ((L&N): 2 wires (section 0.5 at 1.5
mm
).
2
- Communication (RX+/TX+ & RX-/TX-): shielded cable type
AWG20 or AWG22 with 1 braided pair + drainwire + shielding
(e.g., model BELDEN 7703NH).
Note: Please refer to the wiring diagram provided with the unit
and the "50FC" control manual to get more detailed information
about the wiring.
Servo. zone 1
Servo. zone 2
Servo. zone 3
Servo. zone 4
).
2
), supply 24Vac.
2
65
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