Carrier FB4CNF Installation Instructions Manual

Also see for FB4C 018: Installation instructions

Carrier FB4CNF Installation Instructions Manual Manual pdf 1 page image

Installation InstructionsNOTE: Read the entire instruction manual before starting the installation.SAFETY CONSIDERATIONSImproper installation, adjustment, alteration, service, maintenance, oruse can cause explosion, fire, electrical shock, or other conditions whichmay cause death, personal injury or property damage. Consult aqualified installer, service agency, or your distributor or branch forinformation or assistance. The qualified installer or agency must usefactory-authorized kits or accessories when modifying this product.Refer to the individual instructions packaged with kits or accessorieswhen installing.Follow all safety codes. Wear safety glasses, protective clothing andwork gloves. Have a fire extinguisher available. Read these instructionsthoroughly and follow all warnings or cautions included in literature andattached to the unit. Consult local building codes and the current editionsof the National Electrical Code (NEC) NFPA 70.In Canada, refer to the current editions of the Canadian Electrical CodeCSA C22.1.Recognize safety information. This is the safety-alert symbol . Whenyou see this symbol on the unit and in instruction manuals, be alert to thepotential for personal injury.Understand the signal words DANGER, WARNING, and CAUTION.These words are used with the safety-alert symbol. DANGER identifiesthe most serious hazards which will result in severe personal injury ordeath. WARNING signifies hazards which could result in personalinjury or death. CAUTION is used to identify unsafe practices whichmay result in minor personal injury or product and property damage.NOTE is used to highlight suggestions which will result in enhancedinstallation, reliability, or operation.INTRODUCTIONFB4C and FX4D models are R-410A Fan Coils designed for installationflexibility. These units leave the factory compliant with low leakrequirements of less than 2% cabinet leakage rate at 0.5 inches W.C. and1.4% cabinet leakage rate at 0.5 inches W.C. when tested in accordancewith ASHRAE 193 standard.FB4CNF(018-048) uses a refrigerant piston metering device. A TXV isused on FB4CNP and FX4D(018-061). All these fan coils use amulti-tap ECM motor for efficiency. The units have be designed forupflow, downflow (kit required), and horizontal orientations, includingmanufactured and mobile home applications.These units require a field supplied air filter, and are designedspecifically for R-410A refrigerant air conditioners and heat pumps asshipped. These units are available for systems of 18,000 through 60,000BTUh nominal cooling capacity. Factory- authorized, field - installedelectric heater packages are available in sizes 5 through 30kW. SeeProduct Data literature for all available accessory kits.HEATER PACKAGESThis unit may or may not be equipped with an electric heater package.For units not equipped with factory-installed heat, a factory-approved,field-installed, UL listed heater package is available from yourequipment supplier. See unit rating plate for a list of factory-approvedheaters. Heaters that are not factory approved could cause damage whichwould not be covered under the equipment warranty. If fan coil containsa factory-installed heater package, minimum circuit ampacity (MCA)and maximum fuse/breaker may be different than units with a same sizefield-installed accessory heater. The differences is not an error and is dueto calculation difference per UL guidelines.INSTALLATIONCHECK EQUIPMENTUnpack unit and move to final location. Remove carton taking care notto damage unit.NOTE: If the door gasket is damaged or missing, the unit may not meetthe ASHRAE 193 standard for cabinet air leakage. Contact your supplierand order kit #344994-751.Inspect equipment for damage prior to installation. File claim withshipping company if shipment is damaged or incomplete. Locate unitrating plate which contains proper installation information. Check ratingplate to be sure unit matches job specifications.MOUNT UNITUnit can stand or lie on floor, or hang from ceiling or wall. Allow spacefor wiring, piping, and servicing unit.IMPORTANT: When unit is installed over a finished ceiling and/orliving area, building codes may require a field-supplied secondarycondensate pan to be installed under the entire unit. Some localities mayallow as an alternative, the running of a separate, secondary condensateline. Consult local codes for additional restrictions or precautions.NOTE: Nuisance sweating may occur if the unit is installed in a highhumidity environment with low airflow.UPFLOW INSTALLATIONIf return air is to be ducted through a floor, set unit on floor over openingand use 1/8 to 1/4-in (3 to 6 mm) thick fireproof resilient gasket betweenduct, unit, and floor.Side return is a field option on slope coil models. Cut opening perdimensions. (See Fig. 1.) A field-supplied bottom closure is required.FB4CNF, FB4CNP, FX4DFAN COIL UNITSSIZES 018 TO 060WARNING!ELECTRICAL OPERATION HAZARDFailure to maintain proper clearances could result in personal injury ordeath.Before installing or servicing unit, always turn off all power to unit.There may be more than 1 disconnect switch. Turn off accessory heaterpower if applicable.CAUTION!CUT HAZARDFailure to follow this caution may result in personal injury.Sheet metal parts may have sharp edges or burrs. Use care and wearappropriate protective clothing, safety glasses and gloves whenhandling parts.