Carrier FB Series Service And Maintenance Instructions

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Carrier FB Series Service And Maintenance Instructions Manual pdf 1 page image

Service and Maintenance InstructionsNOTE: Read the entire instruction manual before starting theinstallation.SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Fan Coil Description and Troubleshooting. . . . . . . . . . . . . . . . . . . . . 2FY5, FH4, PF4 (even sizes) and FF1E (even sizes) . . . . . . . . . . . 2FB4C, FJ4, FX4D, F54, PF4, FF1E, and FZ (odd sizes). . . . . . . . 4FV, FT4, FG4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6InteliSense™ Technology (FT4, FT5). . . . . . . . . . . . . . . . . . . . . 13FFM and FMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Electric Heater Function and Troubleshooting . . . . . . . . . . . . . . . . . 24FB4, FE4, FE5B, FF1E, FG5, FH4, FJ4, FJ5, FT4, FT5, FV4, FX4,FZ, PF4, PF5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Description of Electric Heater Components . . . . . . . . . . . . . . . . 24Troubleshooting KFC and KFD Series Electric Heaters . . . . . . . 24FFM, FMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Description of Electric Heater Components . . . . . . . . . . . . . . . . 25Leak Dissipation System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Operation (Models with R-454B Refrigerant) . . . . . . . . . . . . . . . 25System Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Care and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26FF1E, FFMA, FMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Refrigerant Flow-Control Devices. . . . . . . . . . . . . . . . . . . . . . . . 28Piston Body Cleaning and Replacement . . . . . . . . . . . . . . . . . . . 30Aluminum Coil Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Installation – A-Coil Units Only. . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Installation – Slope Coil Units Only. . . . . . . . . . . . . . . . . . . . . . . . . 32SAFETY 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.INTRODUCTIONThese fan coil units are designed for flexibility in a variety ofapplications that meet upflow, horizontal, or downflow requirements.Units are available in 1-1/2 through 5 ton nominal cooling capacities.Factory-authorized, field-installed electric heater packages are availablein 3 through 30 kilowatts.FMA family Fan Coils are designed with application flexibility in mindand are suitable for closet and flush mount installations. Units areavailable with field-installed electric heat with circuit breaker. Units areused indoors as the fan coil for split-system heat pumps or airconditioners. The FMA5L uses a refrigerant piston metering device anda 3 speed PSC Motor. FMA5X uses a TXV and a 5 speed multi-tap ECMMotor for efficiency. Units are available in 18,000 through 36,000 Btuhnominal cooling capacities.NOTE: Nuisance sweating may occur if the unit is installed in a humidlocation with low airflow.FB, FE, FF1E, FFM, FG, FH, FJ, FMA, FT, FV, FX, FY, FZ, F54, PFResidential Fan Coil UnitsWARNING!UNIT OPERATION AND SAFERTY HAZARDFailure to follow this warning could result in personal injury or death.R-454B systems operate at higher pressures than R-410A systems. Donot use R-410A service equipment or components on R-454Bequipment. Ensure service equipment is rated for R-454B.WARNING!PERSONAL INJURY AND PROPERTY DAMAGEHAZARDFailure to follow this warning could result in property damage, personalinjury, or death.For continued performance, reliability, and safety, the only approvedaccessories and replacement parts are those specified by the equipmentmanufacturer. The use of non-manufacturer approved parts andaccessories could invalidate the equipment limited warranty and resultin fire risk, equipment malfunction, and failure. Please reviewmanufacturer’s instructions and replacement part catalogs availablefrom your equipment supplier.CAUTION!HOT TUBE WARNINGFailure to follow this caution could result in personal injury and/orproperty damage.Refrigerant lines can reach or exceed 130 °F (54 °C). Avoid contactwith the vapor header or vapor line, especially in Heating Mode. Do notservice A2L refrigerant (ex; R-454B) fan coils while these componentsare hot to avoid risk of ignition source.