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13 - FACTORY OPTIONS AND ACCESSORIES
13.6 Zoning of the airfl ow
This option allows the management of the airfl ow of the unit to
condition up to 4 diff erent zones with a minimum airfl ow of 35%
(all of them in the same operating mode: heating or cooling). This
function adapts the indoor airfl ow to the installation requirements.
Zone terminals
These terminals are the same as the user terminal.
The main screen shows the ambient
temperature, the 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 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 50NC 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.
Regulation gives the control signal to the dampers installed
in each zone (dampers and servomotors for those dampers
not supplied). The unit modifies the airflow and capacity
depending on information coming from sensors in each zone
and considering active zones at 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
comes from a temperature sensor integrated inside each zone
terminal. It is not needed to install any extra ambient sensor.
13.7 Constant supply pressure
Using a diff erential pressure sensor, the airfl ow is controlled to
maintain constant pressure in the supply duct.
This type of management eliminates the restriction of the
number of zones, which facilitates a greater adaptation to the
characteristics of the installation, although the customer must
carry out the control of dampers in each zone.
Note: Please refer to the "50FC" control manual to get more
detailed information about this option.
Note: Please refer to the "50FC" control manual to get more
detailed information about this option.
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
2
).
- Communication (RX+/TX+ & RX-/TX-): shielded cable
type AWG20 or AWG22 with 1 braided pair + drain wire +
shielding (e.g., model BELDEN 7703NH).
Zone terminals can be installed at a maximum distance of 100
meters from the zoning box.
These terminals are confi gured 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
the connections and the fi rmware version.
● Connection of the servomotors for the supply dampers:
- 5 wires (section 0.5 at 1.5 mm
2
), supply 24Vac.
● Connection to the electrical cabinet of the 50NC unit:
- Power supply: 230Vac ((L&N): 2
wires
(section 0.5 at 1.5
mm
2
).
Electrical
cabinet
zone 1
(addr.11)
Servo. zone 1
Servo. zone 2
Servo. zone 3
Servo. zone 4
zone 2
(addr.12)
zone 3
(addr.13)
zone 4
(addr.14)
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