UNIVERSAL FLOOR/CEILING INSTALLATION MANUAL Models: FLRO9HP230V1AF FLR12HP230V1AF FLR18HP230V1AF FLR24HP230V1AF
Thank you for choosing a Multi21 Universal Floor/Ceiling Ductless Heat Pump System for your customer. Please read this installation manual carefully before installing and starting up the Floor/Ceiling Ductless System. Take a moment to fill out the product and installation form on the back cover. Retain both the manual and installation record for future reference. Table of Contents Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Nomenclature . .
SAFETY PRECAUTIONS Please read the following before installation. This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death. WARNING This mark indicates procedures which, if improperly performed, might lead to the death or serious injury of the user.
NOMENCLATURE Example: FLR18HP230V1AF FLR 18 HP 230V 1 A F Product Type S - System O - Outdoor units H - Indoor High Wall D - Indoor Duct C - Indoor Cassette F - Indoor Floor/Ceiling Series Designation FLR - Floor/Ceiling Cooling Capacity 9 - 9,000 BTUH 12 - 12,000 BTUH 18 - 18,000 BTUH 24 - 24,000 BTUH Revision Level Style/Color Designation Model Type AC - Cooling Only HP - Heat Pump HC - Heat/Cool Electrical Rating 230V - 208/230V 60Hz 1PH 115V - 115V 60Hz 1PH SYSTEM REQUIREMENTS PIPE SIZE in (
SUGGESTED TOOLS • Standard Wrench • Adjustable/Crescent Wrench • Torque Wrench • Hex Keys or Allen Wrenches • Drill & Drill Bits • Hole Saw • Pipe Cutter • Screw drivers (Phillips & Flat blade) • Manifold and Gauges • Level • R410A Flaring Tool • Clamp on Amp Meter • Vacuum Pump • Safety Glasses • Work Gloves • Refrigerant Scale • Micron Gauge 4
SYSTEM PARTS Indoor Unit Air Outlet Air inlet Part Name 1. Front Cabinet 2. Air Inlet 3. XK-19 Wired Controller (Optional) 4. Remote Controller 5. Drain Pipe 6. Gas Pipe 7. Liquid Pipe 8. Service Cover 9. Front Panel Power Supply 2 1 3 4 Air inlet Outdoor Unit Air outlet 9 8 7 6 5 CAUTION The refrigerant pipe, drain pipe and electrical wiring for this unit should be installed by a qualified HVAC professional only.
INSTALLATION SITE INSTRUCTIONS Indoor Unit WARNING The unit must be installed in a location which can withstand four times the weight of the unit. Inadequate support may result in serious property damage and injuries. Select a site that allows for the following: • Ensure the installation complies with the installation minimum dimensions and meets the minimum and maximum connecting piping length and maximum change in elevation.
INDOOR UNIT INSTALLATION Indoor Unit Dimensions INDOOR UNIT DIMENSIONS Inches (mm) Model A B C D H FLR09HP230V1AF 48/1220 8.9/225 45.6/1158 11/280 27.6/700 FLR12HP230V1AF 48/1220 8.9/225 45.6/1158 11/280 27.6/700 FLR18HP230V1AF 48/1220 8.9/225 45.6/1158 11/280 27.6/700 FLR24HP230V1AF 48/1220 8.9/225 45.6/1158 11/280 27.6/700 Preparing Indoor Unit for Installation Begin the indoor unit installation by removing the air inlet grille and both side panels from unit as follows: 1.
INDOOR UNIT INSTALLATION Laying Out Indoor Location Pa p e The Universal Floor/Ceiling units allow for wall or ceiling mounting. Follow the instructions for the desire type of installation. r Tem plate Wall Mounting Installation 1. Determine the mounting location on the wall for the indoor unit. Follow the selection criteria in the previous section. 2. Locate the factory supplied installation template included in carton and attach to the wall. 3.
INDOOR UNIT INSTALLATION late mp Te er p Pa Ceiling Mounting Installation 1. Determine the mounting location on the ceiling for the indoor unit. Follow the selection criteria in the previous section. 2. Locate the factory supplied installation template included in carton and attach to the ceiling. 3. Mark and drill the 4 mounting holes for the indoor unit. 4. Depending on the type of ceiling, attach the threaded hanger bolts securely to the support stud.
PIPING INSTALLATION Refrigerant Piping Drill Hole in Wall 1. Locate and mark proper location for the wall hole. Outdoor Indoor Wall Hole Sleeve 2. Cut the wall hole with a 5° to 10° downward slant to the outdoors. See Wall Hole Size table. Seal Hole 3. Insert a wall sleeve (field supplied) into hole to to prevent damage to refrigerant pipes, insulation, condensate drain hose and wiring. Hole Size Wall Hole Diagram 4.
PIPING INSTALLATION Indoor Unit Pipe Connections 1. Feed refrigerant pipes, drain hose and communication cable assembly through wall hole from outdoor to the Floor/Ceiling indoor unit. 2. Pull the piping assembly to the indoor unit. Carefully bend refrigerant pipes to meet indoor unit connection ports. Use proper tools to avoid kinks. Oil applied Copper 3. Add a small amount of refrigerant oil to (to reduce friction piping with the flare nut) both ends of the flare fittings. 4.
PIPING INSTALLATION Outdoor Unit Pipe Connections Carefully bend and adjust length of refrigerant pipes to meet outdoor unit port connections. See installation instructions shipped with the outdoor unit for further instructions.. Indoor Condensate Drain Piping WARNING Observe all local sanitary codes when installing condensate drains. The drain piping should be as short as possible with a constant downward slope.
PIPING INSTALLATION Indoor Condensate Drain Piping (con’t) Completing Condensate Drainage Piping • Include the exterior section of condensate hose in the pipe/wire bundle. • Fasten the refrigerant and condensate pipe assembly to the exterior wall for support. • The drain pipe should terminate 6 inches above grade. Test the Condensate Drainage Piping • Find the drainage port with the air inlet grille and right side panel removed. • Slowly add 20 to 24 oz. of water to the drain pan as shown below.
POWER AND WIRING INSTALLATION WARNING 1. Before obtaining access to wire terminals, all electrical supply circuits must be disconnected, locked out and tagged. 2. Always use an independent (dedicated) circuit and provide an independent (dedicated) circuit breaker to supply power to the system. 3. Use a circuit breaker with adequate capacity to meet the requirements of the total system. 4.
POWER AND WIRING INSTALLATION Electric Wiring Between Indoor Unit and Outdoor Unit N (1) Typical Wiring Diagram 2 3 White Black Red Green Floor/Ceiling N (1) Cassette Unit Unit 2 CN9 Wired Tether Controller XK-19 CN1 3 G Power: Outdoor Electrical Wiring For Outdoor Unit wire connections, see installation instructions shipped with the outdoor unit.
POWER AND WIRING INSTALLATION Indoor Disconnect Switch (Optional) Local codes may require a disconnect switch within sight of the indoor unit. Use a DFS Disconnect Switch Accessory Kit (Part No: DFS-SWITCH-A) to break interconnecting wires going to the N(1), 2, 3, terminals on the indoor unit, as shown in the wiring diagram below: Indoor Unit White Disconnect Switch Black Indoor Unit Outdoor Unit Outdoor Unit Red Green Wires Installing Wired Tether Controller to Floor/Ceiling Unit 1.
CONTROLLER INSTALLATION AND SETUP (Optional) The following is a brief overview of the Wired Tether Controller installation. See Tether Controller Owner's Manual for more detailed instructions for setup and operation. Preparation for Installation Select a proper location on the wall for mounting the Tether Controller. Install switch box, if required by code. The maximum wire length between indoor and Tether Controller is 26 ft (8m).
TESTING AND INSPECTION Overview of Display Panel 1. Power Indicator: Power indicator will be on after electrical power is turned on, while it will be off after disconnecting power. 2. COOL Indicator: COOL indicator will be on after COOLmode is activated while it will be off after COOL mode is turned off. 1 2 3 3. Heat Indicator: HEAT indicator will be on after HEAT mode is activated, while it will be off after HEAT mode is turned off. 4. Indoor setpoint and temperature display.
TROUBLESHOOTING PROBLEM CAUSE/SOLUTION System does not restart. Cause: The system has a built-in three-minute delay to prevent short and/or rapid cycling of the compressor. Indoor unit emits unpleasant odor when started Cause: Typically unpleasant odors are the result of mold or mildew forming on the coil surfaces or the air filter. Solution: Wait three minutes for the protection delay to expire. Solution: Wash indoor air filter in warm water with mild cleaner.
DIAGNOSTIC CODES Troubleshooting The unit has onboard diagnostics. The outdoor unit will provide status indicators. The indoor wall unit and remote controller will display error codes.
DIAGNOSTIC CODES Malfunction Name Indoor Unit Display Outdoor Unit Indicators Yellow Red Possible Causes High Temperature Resistant Protection E8 Cold Air Protection E9 EEPROM Memory Malfunction EE Module Phase Current Protection Frequency Decrease/Limit Mode En Module Temperature Protection Frequency Decrease/Limit Mode EU 11 flashes and 1 sec Off 1) IPM module over heating or malfunctioning 2) Improper voltage at IPM Module Refrigerant Leakage Protection F0 9 flashes and 1 sec Off 1)
DIAGNOSTIC CODES Malfunction Name Indoor Unit Display Outdoor Unit Indicators Yellow Red Possible Causes Indoor Coil Freeze Protection Frequency Decrease/Limit Mode FH Pump Down or Gathering Refrigerant Status Fo High Indoor Coil Temperature in Heating- Frequency Decrease/Limit Mode H0 1) Incorrect refrigerant charge 2) Metering device malfunction 3) Compressor malfunction Defrost Mode in Heating H1 Operation status Compressor Overload Protection H3 8 flashes and 1 sec Off 1) Wiring term
DIAGNOSTIC CODES Malfunction Name Incompatible Indoor and Outdoor Units Defrosting Status Indoor Unit Display Outdoor Unit Indicators Yellow LP 16 flashes and 1 sec Off note 1 16 flashes and 1 sec Off Possible Causes Red Indoor and outdoor units are not compatible Compressor Phase Current Protection P5 1) IPM module malfunction 2) Outdoor control board malfunction 3) Compressor malfunction Module Temperature Sensor Malfunction P7 Outdoor control board malfunction Module Temperature Protecti
GREE ELECTRIC APPLIANCES INC. OF ZHUHAI www.greecomfort.com PRODUCT & INSTALLATION RECORD For your convenience, please record the model and serial numbers of your new equipment in the spaces provided. This information, along with the installation data and dealer contact information, will be helpful should your system require maintenance or service. UNIT INFORMATION Outdoor Unit: Model No. Serial No. Indoor Unit: Model No. Serial No.
