Carrier 4 2 gw Installation Manual

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Contents

Carrier 4 2 gw Installation Manual Manual pdf 39 page image

3742 GWEnglishHDB ControlPower supply connection ÀJ• Make earth connection prior to any other electrical connections.• Disconnect the power supply to all circuits prior to handling anyelectrical components.• Before proceeding with the unit connection to the mains supply locatelive L and neutral N, then make connections as shown in the figure 40(ref. 25, 20).• The unit can be equipped with a “CRC” wire control or an I.R. controlwhich are supplied as accessories. If the "CRC" control is usedconnected to the terminal block ref. 33 fig. 40, disconnect the I.R.receiver cable of connector J5 (remote) ref. D.• Connect the “CRC” cable ref. “E” in the box to connector J5 (remote) ref.“D”.Window (1WS) and presence (1ECO) controlÀJFThe window and presence contacts must be connected to the terminalblock ref. 33 fig. 40 according to the diagram.Fault Code Description Resettable2 Air temperature sensor Yes3 Changeover sensor Yes4 Cold Draft thermistor Yes5 Condensate pump error No6 Electric heater configuration error Yes7 EEprom error Yes8 Chilled Beam configuration error YesValve connection ÀJGThe valves must be connected to the terminal block ref. 33 fig. 40according to the diagram.Grouping connection (fig. 40a)The communication card must be inserted into the special connector“communication J8” provided on the card.For more information refer to the manual provided with the groupingkit.Grouping configuration of several units (fig. 40b)Connect the units in daisy chain configuration (white and blue cables inparallel) for grouping. Refer to the figure below.Fault codes:In the case of failure and with the unit ON, the red LED on the boardstarts flashing according to the fault code: 0.5 seconds ON and 0.5seconds OFF followed by 5 seconds OFF.The fault code table is shown below:Low Energy Consumption Fan MotorLow Energy Consumption Fan Motor version42GW…units can ensure a 0% - 100% constant air flow modulation (andtherefore the thermal and refrigerating capacity) thanks to the Invertertechnology combined with the last generation of high energy-efficientelectric motors (EC brushless). This enables a constant control on thepower supplied according to the room that need to be conditioned.The result is 50% electric energy saving compared to traditional3-speed asynchronous motors and a considerable reduction of acousticemissions.The table below shows the electrical characteristics of the four types ofmotors.NOTE:• The values showed on table are reported only at the Low EnergyConsumption Fan Motor to they are necessary add the controlinput power which correspond about 5W, 9W for the pump and3W or 6W for the valves (4 pipes).The fan coil units of the series 42GW are submitted by Carrier to the NTCcontrol (see attached additional manual) for best regulation of roomtemperature.No further electrical connections are necessary (beside power supplyand communication bus) for this unit.(fIg. 39)All connections between electric components and motor are factorymade.209 309 409 509 609 709LO W 7 7 13 7 9 11A 0.08 0.08 0.12 0.08 0.1 0.12Hi W 23 33 57 25 46 115A 0.19 0.27 0.46 0.23 0.4 0.89