Control; Ahu With Control; Ahu Without Control - CIAT Climaciat Instruction Manual

ƒ Condensate draining connection:
- Refer to your dimensional drawing for the diameters of the connections and their positions,
- Outlet on front frame: for Ø 32 mm tube,
- Fitting the siphon (see § 7.1 "Condensate drainage siphons").
ƒ Electrical connection:
- For machines supplied without a control unit:
- When selecting the cables, take into account the routing, the ambient operating temperature and the current of the
connected motor(s). (see table below)
- The selection, securing and mechanical and electrical protection of cables must conform to the regulations and laws at the
installation site. Follow the recommendations in the regulations section when selecting components and cables.
ƒ Cables recommended for connection:
- Fixed speed motor:
- 4G1.5 supply
Lowest
voltage
U2 V2 W2
DELTA
U1 V1 W1
L1 L2 L3
To prevent the risk of freezing and ice in the heat exchanger, fit pressure or temperature sensors.
For units supplied with integrated control, the power cable and the inverter control cable (option) must be fed into the upper
raceway through the upper panel.
Inside the block, make sure that the cables are correctly secured so that they never come into contact with the moving wheel.

8 - CONTROL

8.1 AHU with control

ƒ If the control is supplied by the manufacturer, refer to the manual provided with it.

8.2 AHU without control

ƒ If the control is not supplied by the manufacturer, the manufacturer accepts no responsibility for any damage that may occur
to the various control components. Special precautions must be taken, in particular:
- The temperature in the air handling unit must not exceed the limits (upper or lower) for which it has been designed,
- Low air flow protection must be integrated in the fan control,
- If an electric heater or gas burner is used, safety thermostats must be installed to shut them down in the event of a problem,
- Pressure sensors must monitor the filter fouling level in order to prevent breakage of the filters due to clogging,
- The adjustment values must not exceed the maximum permissible pressure difference on the filters,
- A device should protect the motors if the fans jam,
- The flow rate and pressure in the duct must be monitored to prevent them from exceeding the limit values.
- A device should detect when the fans are jammed.
- Make sure the isolation dampers are open before authorising the ventilation,
- Ensure a fan delay when the electric heaters or GGS are stopped,
- Fit a minimum air flow detecting device if there is an electric heater or GGS
- Protect the ventilation motors and turbines against overspeed,
- Comply with the required insulation and pollution classes for the electrical components and cables to ensure compliance
with the low voltage directive or the regulations in force at the installation site. Take the altitude into account.
Highest
voltage
U2 V2 W2
STAR
U1 V1 W1
L1 L2 L3
EN - 22
- Variable speed motor:
- 3G1.5 supply
- 4x1 control
(Max 2 A/250 V AC)
L N 13 14 15
1 x 230 V Alarm
relay
T T U
4 5 1
Thermal 3-phase motor
contact
A1 A2 3 9 10 11 12
w br
+ -
S
Manual 0 - 10 V Rotation Reset
speed sensor
V W
2 3
M