Carrier 09PE, Инструкции по установке, эксплуатации и обслуживанию

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20 - OPTION FOR CONTROL CABINET CONTROLLED BY THE CHILLER
(AUX1)
Function
■ Protects and controls the motors. The electronic board is used to communicate with certain chillers with integrated boards to control
the unit according to the temperature or pressure.
Power supply
■ See connection sheet or wiring diagram supplied with the cabinet.
Limits of use
■ Ambient air:
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Storage temperature: -40/+60°C
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Operating temperature: -25/+55°C
Components
■ Packing boxes are provided for the installer on the base of the cabinet.
■ A lockable isolator switch is used as an emergency stop.
■ Protection against short circuit provided by 1 or 2 three-pole circuit breakers (ICC = 10 KA)
■ Protection against overload: thermal cut-out wiring on electronic board.
■ 1 x 230-V switch per stage except for variable-speed fans (EC) which do not have a switch.
■ 1 Electronic board.
■ Temperature sensor (drycooler): fitted on the outlet pipe (control sensor).
Electrical connection
■ Before making any connection, check that the machine's disconnect switch is open.
■ The cabinet is connected to the motors and mounted on the front of the unit, on the inlet manifold side.
■ For electrical connection, refer to the connection sheet or wiring diagram supplied with the cabinet.
■ The cables to use for the power connection must be made from copper. If cables made from other materials, such as aluminium,
are used, bimetallic terminals and connectors or intermediate terminals must be used.
■ The electrical connections are to be made as follows:
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Connection of the protective conductor to the earth terminal.
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Check that the power supply cable is not powered on before connecting the power circuit on the disconnect switch.
■ Outdoor temperature sensor: 25-m cable
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The machine must be installed to enable the outdoor temperature sensor to be positioned on the nearest north façade of the
building. Failing this, the sensor must be positioned on the north face of the unit, away from any air flows (e.g. fan). If none of
these criteria can be met, the customer must put a met mast in place. (Not supplied)
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The sensor cable must be protected from any harmful external elements.
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Make sure the outdoor sensor is not exposed to direct sunlight.
Electronic board functions.
■ See chiller manual.
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Options
■ 400/230 V transformer for the control circuit, for 400 V 3-phase supplies without neutral.
■ Water loop temperature sensor (drycooler) to be fitted with free-cooling upstream of the valve: 25-m cable, G 1/2" pocket.
Ventilation
■ Louvres with filters are fitted on the sides of the cabinet. As an option, a fan may be added for use from 45 to 55°C.
Heating
■ As an option, a heater connected to a temperature sensor may be added for use from -20 to -40°C.
Humidity
■ As an option, a heater connected to a humidity sensor may be added for use above 60% humidity.
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