Carrier 30RBM 160 Installation, Operation And Maintenance Instructions

Also see for 30RBM 160: Installation, operation and maintenance instructions

Contents

Carrier 30RBM 160 Installation, Operation And Maintenance Instructions Manual pdf 22 page image

226.4 - Power cable entryThe power cables for devices are routed into the electrical boxfrom underneath the unit,A removable aluminium plate on the base of the electricalcabinet provides access for the power cables.It is important to check that the power cable bend radius iscompatible with the connection space available inside theelectrical cabinet.Refer to the certified dimensional drawing for the unit.Connection expansion boxThis accessory is used to strip the power cable before it is routedinside the unit's electrical cabinet, and must be used when thecable bend radius is not compatible with the space availableinside the electrical cabinet. The "connection expansion box"accessory provides mechanical protection for the stripped cablebefore it is routed inside the electrical cabinet.It is recommended to use this accessory in the following cases:• Unit placed on the ground and the use of steel wiredarmoured (SWA) cables.• Unit placed on the ground and use of rigid power cableswith a section > 250 mm 26.5 - Field control wiringIMPORTANT:Connecting the interface circuits on-site creates certain safetyrisks; any modification to the electrical box must ensure theequipment remains compliant with local regulations. Inparticular, precautions must be taken to prevent accidentalelectrical contact between the circuits supplied by differentsources:• The choice of routing and/or insulation characteristicsof the conductors ensures double electrical insulation.• The conductors should be fixed together inside theelectrical box to prevent contact between the end of theconductor and a live part in case of accidentaldisconnection.See the control manual and the certified electric wiringdiagram supplied with the unit for the field control wiring ofthe following devices:• Device automatic operation control,• Setpoint 1/Setpoint 2 switching,• Power limitation,• Operational fault reporting• Locking switch (safety chain),• Customer pump switch control (on/off),• Setpoint adjustable by 4-20 mA signal,• Power limitation adjustable by 4-20 mA signal,• Second power limitation level,• End of storage cycle signal,• User fault reporting• Time schedule override,• Partial heat recovery activation control,• Power indication on analogue output (0-10V),• Unit shutdown general fault reporting,• Minor alert signalling,• Partial heat recovery pump On/Off control,• Free cooling drycooler management.6.6 - Electric power reserve for the userControl circuit power reserve:After all possible options have been connected, the CTtransformer ensures the availability of 1 A of power for thecontrol cabling on-site on 24 V, 50 Hz.With the electrical plug option, this CT transformer providesa 230V, 50Hz circuit to power laptop battery chargers only,maximum current of 0.8 A at 230 VIMPORTANT:Only connect class I and II equipment to this power socket.6.7 - Power connection/disconnect switchThe power connection of the unit is carried out at a singlepoint upstream of the unit’s disconnect switch.