Carrier 42KY Instructions D'installation, De Fonctionnement Et D'entretien page 28

42KY offers a choice between two types of motor technology:
Asynchronous and Brushless (low consumption).
- The asynchronous motor:
To optimise the unit's performance and depending on the type of control used. The unit has five speeds numbered V1 to V5
connected to the terminal block in the electrical box (V1= low speed and V5= high speed).
The customer must select and wire the required speeds for his thermostat on the fan terminal block (from V1 to V5).
To open a connection point and change the cabling (Fig. 14):
- Place the end of a flat-blade screwdriver in the hole located just below the cable to be removed.
- Release the cable and move it to the marker for the desired speed.
- Place the screwdriver again in the hole just below the desired speed, insert the cable and remove the screwdriver; this ensures
a secure contact.
Repeat the procedure for the remaining customer speeds.
IMPORTANT: the wires coming from the motor and connected to terminals V1 to V5 must never be interconnected.
IMPORTANT: it is essential to refit the electrical box casing once all the cabling and adjustment operations are complete.
- The brushless motor (EC):
This has a motor speed electronic.
- Controller providing a 0-10 V control signal:
• The 0-10V setpoint voltage information is issued by the controller itself. Refer to the operating and configuration instructions
supplied by the manufacturer.
Caution: If electric heaters are used, the lowest speed setting should never be below 400 rpm.
To prevent any risk of damage, never connect several asynchronous or brushless motors for different units in parallel on the
same thermostat.
IMPORTANT NOTE: Brushless motor (EC)
The electrical connection for our cassette Units must be made in compliance with international standard IEC 60364 (Electrical
Installations for Buildings).
The leakage current on all our cassette Units conforms to the requirements of IEC 60335-2-40 (Safety of household and similar
electrical appliances):
- Complete cassette unit (with electrical heaters) equipped with a multi-speed motor: maximum leakage current = 2 mA
- Complete cassette unit (with electrical heaters) equipped with an EC motor (brushless technology): maximum leakage current
= 4.5 mA.
Electromagnetic compatibility in accordance with Emission Standard 61000-6-3 (EN55014-1, Tool class) and Immunity
61000-6-1 (Residential, commercial and light industry class).
Important: The unit's compliance with the above standards does not guarantee the compliance of the installation as a
whole (several other factors not relating to the unit may be involved). As a result, the installer must observe the applicable
recommendations in order to guarantee compliance.
Electrical safety
To ensure user safety, earthing is compulsory.
The installation must be equipped with a device to protect against earth faults.
A disconnect device must be built into the installation between the supply and the 230 VAC power network, and must be easy
to access. The disconnect device must simultaneously disconnect the two poles (phase and neutral), and have a distance of at
least 3 mm between the contacts, in compliance with the installation instructions.
The mains power cable must have 3 conductors (blue, brown, green/yellow) and its cross section and type must comply with
the specifications set out by the applicable EN or IEC standard. Refer to the selection sheet or the name plate to determine the
maximum input current. The cable must be fed into the box via the circular hole fitted with a protective grommet and secured in
the dedicated strain relief. Its maximum diameter must be 12 mm. It must be clamped at low speed with a torque not exceeding
0.8 Nm.
Connections
Connect the electrical connections to the connectors as per the wiring diagram, and lock the wires using the special cable
grommets.
10
28
120
10 100
Power cable
Max Ø 12