Carrier 30HXC Series Installation, Operation And Maintenance Instructions

Also see for 30GX Series: Installation, operation and maintenance instructions Installation, operation and maintenance instructions

Carrier 30HXC Series Installation, Operation And Maintenance Instructions Manual pdf 17 page image

175 x D mini5 x D mini9.10 - Flow controllers9.10.1 - Cooler flow switch and chilled water pump inter-lockIMPORTANTIt is mandatory to install cooler flow switch and also toconnect chilled water pump interlock on 30HXC and 30GX.Failure to this instruction will void Carrier guarantee.The cooler flow switch controller is factory supplied and wiredon 30HXC and 30GX units.Follow the manufacturer instruction for installation.The flow switch may be mounted in a horizontal pipe or avertical pipe with upward liquid flow. It should not be usedwhen liquid flow is downwards.Mount in a section of pipe where there is a straight run of atleast five pipe diameters on each side of the flow switch. Donot locate adjacent to valves, elbows or orifices. The paddlemust never touch the pipe or any restriction in the pipe. Screwthe flow switch in position so the flat part of the paddle is atright angles to the flow. The arrows on the cover and in thebottom, inside the case, must point in the direction of the flow.The switch should be mounted so that the terminals areaccessible for easy wiring.Terminals 34 and 35 are provided for field installation of achilled water pump interlock (auxiliary contact of chilled waterpump contactor).(Pipe connection: 1" NPT)10 - INSTALLATION10.1 - Check equipment received• Inspect the unit for damage or missing parts. If damage isdetected, or if shipment is incomplete, immediately file aclaim with the shipping company.• Confirm that the unit received is the one ordered.Compare the nameplate data with the order.• Confirm that all accessories ordered for on-site installationhave been delivered, and are complete and undamaged.• Do not store units in an area exposed to weather because ofsensitive control mechanism and electronic devices.10.2 - Moving and siting the unit10.2.1 - MovingDo not remove skids, pallets or protective packaging until theunit is in its final position. Move the chiller using tubes orrollers, or lift it, using slings of the correct capacity.CAUTION (30HXC)Only use slings at the designated lifting points which aremarked on the unit, on the top of the cooler heat exchanger.Rigging from the bottom of the heat exchanger will cause theunit to be lifted unsafely. Personal injury or damage to theunit may occur. Follow the rigging instruction given on thecertified dimensional drawing supplied with the unit.10.2.2 - SitingAlways refer to the chapter "Dimensions and clearances" toconfirm that there is adequate space for all connections andservice operation. For the center of gravity coordinates, theposition of the unit mounting holes, and the weight distributionpoints, refer to the certified dimensional drawing supplied withthe unit.We recommend that these chillers be installed either in abasement or at ground level. If one is to be installed aboveground level, first check that the permissible floor loading isadequate and that the floor is strong enough and level. Ifnecessary, strengthen and level the floor.With the chiller in its final location remove the skids, and otherdevices used to aid in moving it. Level the unit using a spiritlevel, and bolt the unit to the floor or plinth. Operation of theseunits may be impaired if they are not level and not securelyfixed to their mountings. If required use isolation pads underthe unit to aid in vibration isolation.9.10.2 - Condenser flow switch (30HXC)The condenser flow switch is a field-installed device.5 x D MIN.5 x D MIN.FLOWFLOWFLOW