Carrier 42C Installation And Start-up Instructions Manual

Also see for 42C Series: Installation, Start-Up and Service Instructions Installation instructions Product data Product data Product data

Contents

Carrier 42C Installation And Start-up Instructions Manual Manual pdf 1 page image

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 201 Catalog No. 534-231 Printed in U.S.A. Form 42-1SI Pg 1 12-00 Replaces: NewBook 3Tab 7aInstallation and Start-Up InstructionsCONTENTSPageSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Optional Field-Supplied Hardware. . . . . . . . . . . . . . . . 2• WALL-MOUNTED SPACE TEMPERATURESENSOR• RELATIVE HUMIDITY SENSOR• INDOOR AIR QUALITY (CO 2) SENSOR• LINKAGE THERMOSTATControl Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Fan Coil Controller Inputs and Outputs . . . . . . . . . . 5Install Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5• RETURN AIR SENSOR INSTALLATION• WALL-MOUNTED SPACE TEMPERATURESENSOR INSTALLATION• SUPPLY AIR TEMPERATURE SENSORINSTALLATION• INDOOR AIR QUALITY SENSORINSTALLATION (Monitor Only)• HUMIDITY SENSOR (Wall-Mounted)INSTALLATIONConnect the Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Connect Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Connect the CCN Communication Bus . . . . . . . . . . 13• COMMUNICATION BUS WIRESPECIFICATIONS• CONNECTION TO THE COMMUNICATIONBUSSTART-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18,19Perform System Check-Out . . . . . . . . . . . . . . . . . . . . . 18Initial Operation and Test. . . . . . . . . . . . . . . . . . . . . . . . 18DDC Fan Coil Control Testing Procedure . . . . . . . . 18SAFETY CONSIDERATIONSGENERALThe DDC Fan Coil Controller is a factory-installed, CCN(Carrier Comfort Network) communication control for fan coilunits. The fan coil controller is a microprocessor-based directdigital control (DDC) controller for fan coil units. See Fig. 1.The fan coil controller can function as either a stand-alonecontrol or as part of the CCN. User interfaces include the CCNNetwork Service Tool, ComfortVIEW™, and Comfort-WORKS® software. When used as part of the CCN, other de-vices such as the CCN Data Transfer, Linkage Thermostat, orComfort Controller can read data from or write data to the fancoil controller.INSTALLATIONGeneral — The DDC fan coil controller can be connectedto a wall-mounted, field-supplied, space temperature sensor(SPT) in order to monitor zone temperature changes and satisfyzone demand. An optional factory-mounted return air sensor isalso available. See Fig. 2 and 3.The following control options are available:• heating only• cooling only• heating/cooling 2-pipe system with changeover• heating/cooling 4-pipe system (available with 2-positionor modulating water valves)• DX (direct expansion) cooling only• DX cooling only and electric heatOn all heating or cooling applications, the fan coil controllermust be connected to a factory-installed supply-air temperature(SAT) sensor to monitor the temperature of the air delivered bythe fan coil.The following factory-installed sensor options are available:• return-air sensor• return-air sensor with T56 sensor (set point adjustment)• return-air sensor with T57 fan coil thermostat (providesset point adjustment and fan speed adjustment)• changeover sensorCarrier’s Network Service Tool can be connected to the sys-tem at the SPT sensor if CCN communication wiring is run toan RJ-11 jack at the SPT sensor. The Network Service Tool canbe used to adjust set points, set operating parameters, and fullyconfigure the fan coil controller.SAFETY NOTEAir-handling equipment will provide safe and reliableservice when operated within design specifications. Theequipment should be operated and serviced only byauthorized personnel who have a thorough knowledgeof system operation, safety devices and emergencyprocedures.Good judgement should be used in applying any manu-facturer’s instructions to avoid injury to personnel or dam-age to equipment and property.Disconnect all power to the unit before performing mainte-nance or service. Unit may automatically start if power isnot disconnected. Electrical shock and personal injurycould result.If it is necessary to remove and dispose of mercury contac-tors in electric heat section, follow all local, state, and fed-eral laws regarding disposal of equipment containinghazardous materials.DDC Fan Coil Controller42C,D,S,V Units