13 - UNITS WITH FANS WITH AVAILABLE PRESSURE FOR INDOOR
INSTALLATION XTRAFAN
This option applies to TD units installed inside the building in a
plant room. For this type of installation the cold air leaving the
air-cooled evaporators is discharged by the fans to the outside
of the building, using a duct system.
The installation of a duct system at the air evaporator discharge
line causes a pressure drop due to the resistance caused by the
air flow.
Therefore more powerful fan motors than those used for the
standard units are installed in the units with this option. For each
installation of a unit installed inside a plant room the duct pressure
drops differ, depending on the duct length, duct section and
direction changes.
TD units equipped with fans with available pressure are designed
to operate with air discharge ducts with maximum pressure drops
of 100 Pa.
13.1 - Fan discharge connection
A square flange is supplied mounted on the unit. An available
standard round flange can easily be installed at the fan discharge,
if the installer prefers the use of a round connection duct.
The unit is supplied with a grille on the discharge side. This grille
has to be removed before connection to the duct system.
It is advisable to make the connection to the duct system with a
flexible sleeve. If this recommendation is not observed, a lot of
vibration and noise may be transmitted to the building structure.
13.2 - Applicable rules for units
incorporated into an air duct system
Ensure that the suction or discharge inlets are not accidentally
obstructed by the panel positioning (e.g. low return or open doors
etc.).
13.3 - Electrical data for TD units with XtraFan
TD - unit with XtraFan
100
120
150
200
300
Power circuit
Nominal power supply
V-ph-Hz
400-3-50
Voltage range
V
360-440
Control circuit supply
24 V, via internal transformer
Maximum start-up current (Un)
(1)
Standard unit
A
132
174
205
161
246
Unit with electronic starter option
A
71
94
105
102
149
Unit power factor at maximum capacity
(2)
0,83
0,87
0,87
0,83
0,87
Maximum unit power input
(2)
kW
16
20
24
33
49
Nominal unit current draw
(3)
A
22
25
30
44
59
Maximum unit current draw (Un)
(4)
A
29
34
40
57
81
Maximum unit current draw (Un-10%)
(5)
A
31
37
44
62
87
Customer-side unit power reserve
Customer reserve at the 24 V control power circuit
Short-circuit stability and protection
See table on page 18
(1) Maximum instantaneous start-up current (maximum operating current of the comp fan c locked rotor current of the compressor).
(2) Power input, compressor and fan, at the unit operating limits (saturated suction temperature 10°C, saturated condensing temperature 65°C) and nominal voltage
of 400 V (data given on the unit nameplate).
(3) Standardised Eurovent conditions: condenser entering/leaving water temperature = 40°C/45°C, outside air temperature db/wb = 7°C/6°C.
(4) Maximum unit operating current at maximum unit power input and 400 V (values given on the unit nameplate).
(5) Maximum unit operating current at maximum unit power input and 360 V.
AQUACIAT
CALÉO™
TD
EN-34
