Carrier 50FF Series Control Manual

Also see for 50FC Series: Installation, operation and maintenance instructions Controls, Start-Up, Operation and Troubleshooting User manual Service and maintenance instructions Installation, operation and maintenance instructions

Contents

Carrier 50FF Series Control Manual Manual pdf 4 page image

4Carel and ModbusOne RS485 serial card is connectedfor the supervisory network withboth Carel and Modbus protocol.1.7. BMS communicationThis control allows the connection to a centralised technicalmanagement system by using a specific BMS card (optional) forthe following communication protocols:Ethernet pCO WebThe Ethernet pCO Web card allowsthe network communication withthe protocols Modbus TCP/IP,BACnetTM Ethernet, TCP/IP, SNMPV1-2-3, FTP and HTTP.BACnetTM Ethernet: Configurationby the integrator.1.4. SensorsSensors included with the control:The standard sensors connected to the control board are:● Return air temperature probe (S1).● Outdoor air temperature probe (S2).Note: If the unit is integrated in a pLAN network, it can read thevalue of outdoor temperature measured by the master unit probe.● Supply air temperature probe (S3).● Mixing air temperature probe (S4).● Ambient air temperature probe, NTC type (S5a).Note: If the unit is integrated in a pLAN network, it can read thevalue of ambient temperature measured by the master unit probe.● Transducers of low pressure: circuit 1 (S6) and circuit 2 (S11).● Transducers of high pressure: circuit 1 (S7) and circuit 2 (S12).● Suction temperature probes: circuit 1 (S8) and circuit 2 (S9).Optional sensors connected on the control board:● Outdoor air relative humidity (S5h): this probe is used instead ofthe outdoor temperature probe and is necessary with the optionof enthalpic or thermoenthalpic free-cooling.When the unit needs the outdoor humidity probe (S5h), thisone is connected on the board in place of the NTC ambienttemperature probe (S5a). In this case, it’s necessary to use aRS485 ambient temperature probe connected on the Field-bus.Note: If the unit is integrated in a pLAN network, it can read thevalue of outdoor humidity measured by the master unit probe.● Air quality sensor to enable measuring CO 2 . This probe can beinstalled in the environment (S10a) or duct-mounted (S10c).A second probe can be connected on the pCOe expansion cardwith address 9 to improve the air quality control.Note: If the unit is integrated in a pLAN network, it can read thevalue of CO 2 measured by the master unit probe.1.5. pCOe expansion cards (optional)For the management of some optional elements, the control needsadditional inputs and outputs. This problem is solved by the useof pCOe expansion card connected in series on the Field-Bus.Card with address 8:This module is needed to manage the options:● “Very low outdoor temperature”.● Mechanical disconnection of stages.● Proportional humidifier or overpressure control with exhaustdamper.Card with address 9:This module is needed to manage the options:● Zoning into 2 zones with dampers.● Control of supply and return dampers (external to the unit).● Heat recovery wheel with variable speed.4-way valve(heat pump)Outdoor fanCompressorHigh press.pressostatS3Supply air probeOutdoor temperature probeS2S7 (*)High pressuretransducer S1Return air probeS4MixingprobeDischarge Tklixon switchFresh airAir extractionS5aAmbient air probeS10Air quality probe(opt.)Outdoor coilIndoor coilIndoor fanElectronicexpansionvalveS6 (*)Low pressuretransducerS8 (*)Suctiontemperatureprobe(*) Units with 2 circuits:• Low pressure transducer: S6 (circuit 1) and S11 (circuit 2)• High pressure transducer: S7 (circuit 1) and S12 (circuit 2)• Suction temperature probe: S8 (circuit 1) and S9 (circuit 2)Unit with 1 circuit1 - GENERAL DESCRIPTIONOptional sensors connected, in series, on the Field-bus:● RS485 ambient temperature probe (1 to 4 probes connected inseries):- When the unit needs the outdoor humidity probe (with enthalpicor thermoenthalpic free-cooling), this one is connected on theboard in place of the NTC ambient temperature probe (S5a).In this case, a RS485 ambient temperature probe is used.- An ambient temperature probe with RS485 communication isrequired for installation at distances up to 30 meters.Note: If the unit is integrated in a pLAN network, it can readthe value of ambient temperature measured by the masterunit probe(s).● RS485 ambient T + RH probe (1 to 4 probes connected in series):- This probe is necessary with enthalpic or thermoenthalpic free-cooling. In this case, the outdoor humidity probe is also added.Note: If the unit is integrated in a pLAN network, it can read thevalue of ambient T + RH measured by the master unit probe(s).● RS485 enthalpy probes on the mixing air and the supply air forcalculation of the cooling and heating capacities.1.6. SMALL boards (optional)For the management of some optional elements, the control needsa SMALL board connected in series on the Field-Bus.Board with address 4: The energy recovery circuit.Board with address 11: Zoning of the air flow up to 4 differentzones through dampers.