Carrier 40WAU Series Installation And Maintenance Instructions Manual

40WAU012-048Under Ceiling/Floor Indoor Units forMini Variable Refrigerant Flow (VRF) SystemsInstallation and Maintenance InstructionsCONTENTSPageSAFETY CONSIDERATIONS ..................... 1,2GENERAL ...................................... 2-4INSTALLATION ................................. 4-9Step 1 -- Unpack and Inspect Units .............. 4• PROTECTING UNITS FROM DAMAGE• PREPARING JOBSITE FOR UNIT INSTALLATION• IDENTIFYING AND PREPARING UNITSStep 2 -- Position the Unit ....................... 5Step 3 -- Mount the Unit ......................... 5• INSTALLING HANGER BOLTS(UNDER CEILING MOUNT)• MOUNTING UNIT (UNDER CEILING MOUNT)• INSTALLING MOUNTING HOOKS ANDMOUNTING UNIT (FLOOR STANDING)Step 4- Connect Piping ......................... 7• CONDENSATE PIPING• REFRIGERANT PIPINGStep 5 -- Complete Electrical Connections ....... 7Step 6 -- Position and Connect Controller ....... 9• WIRELESS REMOTE CONTROLLER• WIRED REMOTE CONTROLLER(PROGRAMMABLE)• WIRED REMOTE CONTROLLER(NON-PROGRAMMABLE)• CENTRAL CONTROLLERSTART-UP ....................................... 10Pre-Start Check ................................. 10System Operation Check ....................... 10MAINTENANCE ................................. 10TROUBLESHOOTING ......................... 10-12Replacement Parts ............................. 12SAFETY CONSIDERATIONSImproper installation, adjustment, alteration, service, main-tenance, or use can cause explosion, fire, electrical shock, orother conditions which may cause death, personal injury orproperty damage. The qualified installer or agency must usefactory-authorized kits or accessories when modifying thisproduct.Follow all safety codes. Wear safety glasses, protectiveclothing, and work gloves. Use quenching cloth for brazing op-erations. Have fire extinguisher available. Read these instruc-tions thoroughly and follow all warnings or cautions includedin literature and attached to the unit. Consult local buildingcodes and the current editions of the National Electrical Code(NEC) ANSI!NFPA (American National Standards Institute/National Fire Protection Association) 70. In Canada, refer tothe current editions of the Canadian Electrical Code CSA (Ca-nadian Standards Association) C22.1.Understand the signal words -- DANGER. WARNING,and CAUTION. DANGER identifies the most serious hazardswhich will result in severe personal injury or death.WARNING signifies hazards that could result in personalinjury or death. CAUTION is used to identify unsafe practices,which would result in minor personal injury or product andproperty damage.Recognize safety information. This is the safety-alertsymbol (z_). When this symbol is displayed on the unit and ininstructions or manuals, be alert to the potential for personalinjury Installing, starting up, and servicing equipment can behazardous due to system pressure, electrical components, andequipment location.Electrical shock can cause personal injury and death. Shutoff all power to this equipment during installation. Theremay be more than one disconnect switch. Tag all discon-nect locations to alert others not to restore power until workis completed.When installing the equipment in a small space, provideadequate measures to avoid refrigerant concentrationexceeding safety limits due to refrigerant leak. In case ofrefrigerant leak during installation, ventilate the spaceilmnediately. Failure to follow this procedure may lead topersonal injury.DO NOT USE TORCH to remove any component. Systemcontains oil and refrigerant under pressure.To remove a component, wear protective gloves and gog-gles and proceed as follows:a. Shut off electrical power to unit.b. Recover refrigerant to relieve all pressure from sys-tem using both high-pressure and low pressure ports.c. Traces of vapor should be displaced with nitrogenand the work area should be well ventilated. Refrig-erant in contact with an open flame produces toxicgases.d. Cut component connection robing with tubing cutterand remove component from unit. Use a pan to catchany oil that may come out of the lines and as a gagefor how much oil to add to the system.e. Carefully unsweat remaining tubing stubs when nec-essary. Oil can ignite when exposed to torch flame.Failure to follow these procedures may result in personalinjury or death.Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 04-53400015-01 Printed in U.S.A. Form 40WAU-1SI Pg 1 6-15 Replaces: New