Access To The Electrical Panel And User Board - MAXA i-290 0106 Installer Manual

Before starting any operation, make sure that the power supply is disconnected.
The electrical panel is positioned below the cover. Respect the minimum clearances reported in Chapter 5.4 to perform
wiring.
The installer is responsible to provide an isolating system (e.g. magnetothermal differential circuit breaker) upstream of the
unit's electrical connections.
The supply voltage must not vary by more than ±10% of the nominal value. Please contact the electricity supply company
if this tolerance is not respected. The power supply must comply with the limits mentioned, otherwise the warranty shall
expire immediately.
If the supply cable is damaged, it must be replaced by qualified personnel, (IEC 60335-2-40 Annex HH), in order to prevent
any risk.
Any devices placed nearby can cause / suffer electromagnetic disturbances to / from the unit. Be aware of this risk at the
installation site. It is recommended to electrically power the unit with an adequate line and protections and use an indepen-
dent cable duct.
The flowmeter (FM element in the hydraulic diagram above and factory installed) must ALWAYS be connected as shown in
the circuit diagram. Never jumper the flowmeter connections on the board in the terminal box. The guarantee will no longer
be valid if the flowmeter connections have been altered or incorrectly connected.
CAUTION: The remote control panel is connected to the chiller by 4 cables with a cross-section of 1.5 mm2. The power cables
must be separate from the remote control cables. Maximum distance 50 metres.
The remote control panel must not be installed in an area with strong vibrations, corrosive gases, excessive dirty or high
moisture. Leave the area near the chiller clear.
All electrical components have been designed to work in an environment where R290 gas is present. Any damage, tampering
or alteration can cause a fire hazard.
Do not tamper with the cable fixing. Do not disconnect the electrical panel connectors.
5.12.1 Access to the electrical panel and user board
The following is the procedure to remove the cover of the electrical panel and of the user board case. The images show sizes 0106 / 0109 (single
fan) and sizes 0112 / 0115 / 0118 (twin fan).
To access the electrical panel follow the instruction below:
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i-290
Inverter air/water heat pumps with axial fans