Installation Manual). When static pressure is adjusted, connect S1 and S2 to CN8 and CN9 (see Fig. 21). On selected indoor units, the Up-Down Swing Louver function as well as the control to turn off the indoor unit display is available on the unit’s Wireless Remote controller. The Wi-Fi accessory and
9 —Wiring Diagram. IMPORTANT: All ground wiring must be installed according to the equipment installation manual. The indoor unit requires an updated control ...
ducted unit Installation Manual). When static pressure is adjusted, reconnect L1, L2, S and G wires to the terminal blocks. On selected indoor units, the Up-Down Swing Louver function as well as the control to turn off the indoor unit display (LED) is available on the unit’s Wireless Remote controller. The Wi-Fi
KSAIC0301230 24V Interface Kit for Ductless Systems and Hybrid Solutions Installation Instructions Read and become familiar with these instructions before beginning installation. SAFETY CONSIDERATIONS Read these instructions thoroughly and follow all warnings or cautions included in the literature and attached to the unit. Consult local building codes and National Electrical Code (NEC) for special requirements. Recognize safety information. This is the safety-alert symbol . When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury. Understand these signal words: DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation. WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. Before beginning any modification or installation of this kit, be sure the main electrical disconnect is in the OFF position. Ensure power is disconnected to the fan coil unit. On some systems both the fan coil and the outdoor unit may be on the same disconnect. Tag the disconnect switch with a suitable warning label. There may be more than one disconnect. TABLE OF CONTENTS PAGE SAFETY CONSIDERATIONS........................................................1 OVERVIEW .....................................................................................1 DIMENSIONS..................................................................................2 CLEARANCES ................................................................................2 INSTALLATION .............................................................................3 SYSTEM CONFIGURATION SCENARIOS .................................3 WIRING ...........................................................................................8 DIP SWITCHES CONFIGURATION .............................................11 WIRING DIAGRAM .......................................................................13 APPENDIX 1 - COMPATIBILITY CHART...................................14 APPENDIX 2 - PIPING ADAPTER BUSHINGS/REDUCERS.....15 APPENDIX 3 - FV4C TRANSFORMER........................................15 APPENDIX 4 - ADDITIONAL REFRIGERANT CHARGE FOR CONVENTIONAL FAN COILS .....................................................15 APPENDIX 5 - FV4C AIRFLOW DELIVERY ..............................16 OVERVIEW The 24V INTERFACE KIT is used to connect: A Single or Multi-zone Ductless System to a 3rd party single stage conventional thermostat. A Single Zone Ductless Condensing Unit 38MA*R with an approved Fan Coil. For other applications, consult your Ductless representative. CAUTION EQUIPMENT DAMAGE HAZARD Failure to follow this warning may result in equipment damage. Do not install the wired controller in an area subjected to excessive steam, oil or sulfide gas. Doing so may cause the controller to deform and/or fail. CAUTION INSTALLATION Entrust the distributor or authorized professionals to install the unit. Installation by unskilled persons may lead to improper installation, electric shock, or fire. Re-installation must be performed by authorized professionals. Non-compliance may lead to electric shock or fire. Fig. 1 --24V Interface NOTES: Images are for illustration purposes only. Actual models may be slightly different. Table 1 --Kit Contents: Confirm the following parts are included No. Description Qty Remarks 1 Control box 1 N/A 2 Installation Manual 1 N/A 3 Screws 3 M4X20 (for wall mounting) 4 Wall Anchors 3 For wall mounting Return Air Thermistor Assembly Required and installed near 7 (Hybrid Solutions) (RCD part 1 or on the unit and on the air number 11201007003448) inlet side 16ft. (5m) Return Air Thermistor 8 Assembly Extension Wires (RCD 1 part number 17401204010126) For a Return Air Temperature Sensor on Hybrid Solutions Table 2 -- Field Supplied Components: Prepare the following assemblies on site No. Description 1 Switch Box 2 Wiring Tube (insulating sleeve and tightening screw) Qty Type Remarks 1 N/A N/A 1 N/A N/A Specifications subject to change without notice. WARNING The wiring should adapt to the wire control current. Otherwise, electric leakage or overheating may occur and result in a fire. The specified cables shall be used in the wiring. No external force may be applied to the terminal. Otherwise, the wire may be damaged and heating may occur and result in a fire. CAUTION The shielded wire must be grounded. Sensor connecting cable should not be longer than 23ft. (7m). The control box operates on low voltage circuit loops. DO NOT connect a 220V or 380V cable to the circuit loop. DIMENSIONS 1.3" (32mm) 8.7" (220mm) 0.6" (15mm) 7.8" (200mm) 6.9" (176mm) CLEARANCES 11.1" (283mm) 2.5" (63mm) Fig. 2 --24V Interface Structure Size Table 3 -- 24V Interface Clearance Dimensions Clearances Unit Minimum Value In (mm) Sides 5.9 (150) Front 24 (610)* Top and Bottom 3 (76.2) >5.9 (150) >5.9 (150) Fig. 3 --Clearances 2 Specifications subject to change without notice. IM-KSAIC03-02 INSTALLATION Installation Location The 24V INTERFACE KIT is rated for outdoor and indoor mounting (depending on the application). It is recommended to install as close as possible to the indoor unit and thermostat. IMPORTANT: Follow the recommended clearances and install in an area above the ground away from locations where water could enter. Back plate Screws (M4×20) Right Fig. 4 --Installation Floor Mount View (right way) Wrong Fig. 7 --24V Interface Kit NOTE: Place the unit on a flat surface. Be careful not to distort the back plate of the 24V INTERFACE KIT by over tightening the screws. 3. WIRING - Based on the system used, wire the unit as shown in the System Configuration Scenarios section. 4. Cover the 24V INTERFACE KIT lid, and lock back in place using the six screws previously removed. Fig. 5 --Installation Floor Mount View (wrong way) CAUTION DO NOT install the 24V INTERFACE KIT near flammable liquids or gases such as gasoline or hydrogen sulfide. Doing so creates a fire hazard. 1. Remove the cover of the 24V INTERFACE KIT. Remove the six screws of the 24V INTERFACE KIT with a screwdriver or similar tool. Rotate the lid along the hem to disassemble. Fig. 8 --Cover the screw Fig. 6 --Remove the cover 2. Mount the 24V INTERFACE KIT horizontally (see Fig. 7), by fastening the back plate to the wall with 3 screws\ (M4x20) and anchors. CAUTION System Configuration NOTES: · Thermostat should be configured for use with a conventional system. · The wireless remote controller, wired controller and Wi-Fi cannot be used with this 24V interface Kit at the same time. Only the Swing and LED function may be accessed with the wireless remote. Table 4 -- Connection Wiring Specification Connection Wiring Size Outdoor L1, L2, S & G, S1, S2 Refer to the outdoor connecting wires size Indoor L1, L2, S & G, S1, S2 Refer to the indoor connecting wires size R,C 18AWG (minimum) Y/W/G/G1/ G2/G3/Dry 18AWG (minimum) SYSTEM CONFIGURATION SCENARIOS The 24V Interface kit cover has a directional arrow on the cover. In case of outdoors installation verify, during the mounting process, that this arrow will point UP upon installation. Failure to mount the kit correctly can cause water ingress into the box which may compromise the electrical component integrity. Follow the configuration scenarios for the right connections depending on the system: Scenario 1: Single Zone Ductless System with 38MPRA, 38MA*R, 38MHR Scenario 2: Single Zone Ductless System with 38MBR Scenario 3: Multi-zone Ductless System with 38MGR Scenario 4: Single Zone Fan Coils FMA/FMC/FMU with 38MA*R Scenario 5: Single Zone Fan Coils FV4C with 38MA*R IM-KSAIC03-02 Specifications subject to change without notice. 3 SYSTEM CONFIGURATION SCENARIOS Scenario No. 1: Match the following ductless indoor units with the corresponding compatible SINGLE ZONE outdoor units: · High Wall (sizes 9-36)[208-230V] · Cassette (sizes 9-24) · Ducted (sizes 9-24) (*refer to NOTE) · Console (sizes 18-24) Installation Steps: 1. Run the interconnecting piping from the indoor to the outdoor unit using the indoor piping size. 2. Run the interconnecting wiring from the outdoor unit to the 24V interface using terminal connections L1, L2, S and G. 3. Run the interconnecting wiring from the 24V interface to the indoor unit using terminal connections L1, L2, S and G. 4. Run the thermostat wiring from the thermostat to the 24V interface using connections R and C on CN15 and Y, W, G on CN19. 5. Configure the dip switches on the 24V interface accordingly. NOTES: Follow the Indoor and Outdoor unit's general installation instructions. *For the Ducted units, in order to initially setup the static pressure, the 24V interface must be bridged. Temporarily connect together the Communication wires L1, L2, S and G from indoor to outdoor unit until static pressure settings are complete (see ducted unit Installation Manual). When static pressure is adjusted, reconnect L1, L2, S and G wires to the terminal blocks. On selected indoor units, the Up-Down Swing Louver function as well as the control to turn off the indoor unit display (LED) is available on the unit's Wireless Remote controller. The Wi-Fi accessory and Wired Remote controller are not functional when using the 24V interface. For 115V Ductless applications the 24V transformer must be replaced in the field. This is available through RCD part number 11203103000393. CAUTION The indoor unit requires an updated control board for compatibility with the 24V interface. Refer to the Compatibility Charts on hvacpartners.com for proper matches and serial number compatibility. 70 Thermostat BUS BAR G G Do not connect to indoor sensor G *All ground wiring must be installed according to the equipment installation manual. *All ground wiring must be installed according to the equipment installation manual. G G Power supply from outdoor unit disconnect. Two wires are line voltage and the other is a ground wire. Fig. 9 --Wiring Diagram IMPORTANT: All ground wiring must be installed according to the equipment installation manual. 4 Specifications subject to change without notice. IM-KSAIC03-02 Scenario No. 2: Single Zone Outdoor units 38MBR with approved Ductless indoor units Cassettes, Ducted and Consoles (for proper combinations consult the compatibility chart). · Cassette (sizes 36-48) · Ducted (sizes 36-48) (*refer to NOTE) · Console (sizes 36-48) Installation Steps: 1. Run the interconnecting piping from the indoor to the outdoor using the indoor piping size. 2. Run the interconnecting wiring from the outdoor unit to the 24V interface using terminal connections L1, L2, and G. Connect the wiring for the S1 & S2 outdoor interface to CN8. 3. Run the interconnecting wiring from the 24V interface to the indoor unit using terminal connections L1, L2, and G. Connect the wiring for S1 & S2 outdoor interface to CN9. 4. Run the thermostat wiring from the thermostat to the 24V interface using connections R and C on CN15 and Y, W, G on CN19. 5. Configure the dip switches on the 24V interface accordingly. NOTES: Follow the Indoor and Outdoor unit's general installation instructions. *For Ducted units, in order to initially setup the static pressure, the 24V interface must be bridged. Temporarily connect together the Communication wires S1 and S2 from indoor to outdoor unit until static pressure settings are complete (see ducted unit Installation Manual). When static pressure is adjusted, connect S1 and S2 to CN8 and CN9 (see Fig. 21). On selected indoor units, the Up-Down Swing Louver function as well as the control to turn off the indoor unit display is available on the unit's Wireless Remote controller. The Wi-Fi accessory and Wired Remote controller is not functional when using the 24V interface. GROUND Do not install indoor sensor Power supply from outdoor unit disconnect Two wires are line voltage and the other is a ground wire. Fig. 10 --Wiring Diagram IM-KSAIC03-02 Specifications subject to change without notice. 5 Scenario No. 3: Multi-zone Outdoor units 38MGR with approved Ductless indoor units High Walls, Cassettes, Ducted and Consoles. (For proper combinations, consult the compatibility chart). · High Wall (Sizes 9-24) · Cassette (Sizes 9-24) · Ducted (Sizes 9-24) (*refer to NOTE) · Console (Sizes 9-24) Installation Steps: 1. Run interconnecting piping from Indoor to Outdoor using Indoor piping size. 2. Run interconnecting wiring from outdoor unit to 24V interface using terminal connections L1, L2, S, and G. 3. Run interconnecting wiring from 24V interface to indoor unit using terminal connections L1, L2, S and G. 4. Run thermostat wiring from thermostat to 24V interface using connection R and C on CN15 and Y, W, G on CN19. 5. Configure the dip switches on the 24V interface accordingly. NOTES: One 24V interface and one thermostat is required per indoor unit head. Follow the Indoor and Outdoor unit's general installation instructions. *For Ducted units, in order to initially setup the static pressure, the 24V interface must be bridged. Temporarily connect together the Communication wires L1, L2, S and G from indoor to outdoor unit until static pressure settings are complete (see ducted unit Installation Manual). When static pressure is adjusted, reconnect L1, L2, S and G wires to the terminal blocks. In the AUTO mode, the system automatically cools or heats the room according to the user-selected set point. mode, the system automatically cools or heats the room according to the userselected set point. AUTO mode is recommended for use on Single Zone applications only. Using AUTO changeover on multi-zone applications could set an indoor unit to STANDBY mode, indicated with two dashes (--) on the display, which will turn off the indoor unit until all the indoor units are in the same mode (COOLING or HEATING). HEATING is the system's priority mode. Simultaneous HEATING and COOLING is not allowed. On selected indoor units, the Up-Down Swing Louver function as well as the control to turn off the indoor unit display, is available on the unit's wireless remote control. The Wi-Fi accessory and wired remote control is not functional when using the 24V interface. 70 Thermostat GROUND Do not connect the indoor sensor Power supply from outdoor unit disconnect. Two wires are line voltage and the other is a ground wire. 6 Fig. 11 --Wiring Diagram Specifications subject to change without notice. IM-KSAIC03-02 Scenario No. 4: Single Zone outdoor unit 38MA*R with approved multi-family 24V fan coils FMA/FMC/FMU. (For proper combinations consult the compatibility chart in the "APPENDIX 1 - COMPATIBILITY CHART" on page 14). Installation Steps: 1. Remove TXV/Piston on the indoor unit. 2. Run interconnecting piping from outdoor to indoor using Outdoor piping size and brazing to the adapter for the mechanical fitting from which the TXV was removed (Part number 331831-701) (available through RCD). If required, use the Bushing / Reducers listed on "APPENDIX 2 - PIPING ADAPTER BUSHINGS/ REDUCERS" on page 15. 3. Suction and liquid refrigerant lines must be properly insulated and separated from each other to prevent condensation and energy loss. 4. Disconnect and remove the 24V transformer from the 24V interface kit. Run 2-conductor wire from 24 volt side of the Indoor Unit transformer to CN16 and CN17. 5. Run interconnecting wiring from outdoor unit to 24V interface using terminal connections L1, L2, S and G. 6. Run thermostat wiring from thermostat to 24V interface using connection R and C on CN15 and Y, W, G on CN19. 7. Run thermostat wiring from 24V interface to indoor unit using output connections G1 (Low), G1+G2 (Medium), G1+G2+G3 (High) on the 24V interface and connect according to the installation manual for these fan coils. 8. Install the T1 sensor on CN5 on the 24V interface and place on the return of the indoor unit. 9. Configure the dip switches on the 24V interface accordingly. NOTES: Follow the Indoor and Outdoor unit's general installation instructions. The T1 (Return air temperature) sensor should be near or on the unit and on the air inlet side. The thermistor should be installed pointing down into the duct between 2.5ft. (0.762m) and 4ft. (1.2m) from the return side of the fan coil. Use a 1/2" drill and insert the thermistor no less than 6 in. into the duct and seal air tight around cable. CAUTION When the outdoor unit is matched with a Multi-Family or Residential Fan Coil and due the need to braze the piping on the fan coil side it is REQUIRED to flow Nitrogen in the system while brazing the line set since a filter drier is not recommended to be used with these condensing units. 70 Thermostat 1 2 3 4 5 NGL C L1 L2 Transformer GROUND Power supply from indoor unit disconnect Power supply from outdoor unit disconnect. Two wires are line voltage and the other is a ground wire. Fig. 12 --Wiring Diagram for Conventional 24V Fan Coil indoor unit Red dash means disconnect IM-KSAIC03-02 Specifications subject to change without notice. 7 Scenario No. 4 (cont): WIRING All wires must be sized per NEC (National Electrical Code) or CEC (Canadian Electrical Code) and local codes. Use Electrical Data table MCA (minimum circuit amps) and MOCP (maximum over current protection) to correctly size the wires and the disconnect fuse or breakers respectively. Per the caution note, only stranded copper conductors with a 600 volt insulation rating wire must be used. Separate power supplies are required for the OUTDOOR UNIT and the INDOOR UNIT. The field supplied 14/3 stranded wire with ground and a 600 volt insulation rating, power/communication wiring from the OUTDOOR UNIT to 24V INTERFACE KIT consists of four (4) wires and provides the power for the 24V Interface. Two wires are line voltage AC power, one is communication wiring (S) and the other is a ground wire. Wiring between the OUTDOOR UNIT to 24V INTERFACE KIT is polarity sensitive. The use of B X wire is NOT recommended. Auxiliary Heating: To energize an Auxiliary Heater, connect W2 on the thermostat directly to the an electric heat relay(s) (field supplied) and complete the circuit to the heater element(s). The thermostat must be setup to use different heating priorities. Control Logic Table 5 -- Conventional Thermostat Connections Connector Purpose R/C 24VAC Output Y Cooling W Heating G Fan AUX/DRY Aux/Dry Mode Table 6 -- Mode Setting Y W G Aux/Dry Setting Mode X Cooling X X Heating XX X Fan only OFF XXX X OFF X X DRY Mode (on Ductless Systems) CAUTION The conventional thermostat must be configured for use with a single stage air conditioner (Y output ONLY) and a single stage heating (W) system. Key Considerations The following steps should be taken when using this device with a conventional central air conditioning unit: · Indoor coil metering device (TXV/Piston) must be removed · 24V transformer in the interface module must be disconnected · Refrigerant charge amount may need to be adjusted, depending on the pipe size and length, see the outdoor recharge instruction. · The maximum air flow should not exceed 400 CFM/Ton. When the indoor air handler or furnace has its own 24VAC transformer, you must disconnect all four wires of the 24V Interface kit transformer (see Fig. 13). FAN SPEED - Select Auto, Low Medium or High Airflow For Ductless Systems (Scenarios 1-3) the Fan Speed defaults to AUTO. For Hybrid Solutions, see "Scenario No. 4:" on page 7. The fan outputs are G1 (1st), G1+G2 (2nd), and G1+G2+G3 (3rd). For the single fan speed only, G1 has to be connected. Use the selection options provided to adjust the airflow supplied to meet the individual installation needs for such things as noise, comfort, and humidity removal. Table 7 -- Fan Speed Setting Unit ON/OFF G Setting Fan Speed X Auto Fan Speed Auto Fan Speed X X Fan OFF LEGEND ON X OFF ON or OFF CAUTION Only the approved combinations and model numbers of the fan coils listed on the Appendix shall be used to avoid any damages to the fan motor. The use of a fan coils with a PSC motor is not recommended or approved. Fig. 13 --Wiring 8 Specifications subject to change without notice. IM-KSAIC03-02 Scenario No. 5: Single Zone outdoor unit 38MA*R with approved residential 24V fan coils. (For proper combinations consult the compatibility chart in "APPENDIX 1" on page 14). Installation Steps: 1. Remove TXV on the indoor unit. 2. Run interconnecting piping from outdoor to indoor using Outdoor piping size and brazing to the mechanical fitting adapter that replaces the TXV (part number 331831-701) (available through RCD). If required, use the Bushing / Reducers listed on "APPENDIX 2 - PIPING ADAPTER BUSHINGS/REDUCERS" on page 15. 3. Suction and liquid refrigerant lines must be properly insulated and separated from each other to prevent condensation and energy loss 4. Disconnect and remove the 24 volt transformer from the 24 Volt Interface. Run 2-conductor 18 AWG cable from R and C of the indoor unit terminal board. Connect "R" to CN17 and "C" to CN16 on the 24 Volt Interface. Be sure to connect the primary (high voltage) wire to the correct terminal (tap) on the FV4C transformer (see Appendix 3). 5. Run interconnecting wiring (14-3 AWG stranded power cable with ground and 600 volt insulation rating) from outdoor unit to 24 Volt Interface using terminal connections L1, L2, S, and G. Connect ground wire G to the grounding connection in the case. 6. Run 18 AWG thermostat wiring from thermostat terminals to the 24 Volt Interface and connect to R and C on CN15. Also connect Y, W, and G on CN19. NOTE: Use an instrument size flat blade screwdriver with a maximum blade width of 1/8" for the screw terminals. 7. Run 18 AWG thermostat wiring from "G1" on CN18 of the 24 Volt Interface to "G" on the indoor unit terminal board. 8. Install the T1 sensor (included with 24 Volt Interface) on CN5 of the 24 Volt Interface and locate according to the NOTE, below. 9. Configure the dip switches on the 24 Volt Interface for proper operation: For Heat Pump all switches OFF except SW1-1 = ON For Cooling Only all switches OFF except SW1-1 = ON and SW2-1 = ON. 10. Configure the Fan Coil "Easy Select" Printed-Circuit Board following the instructions on the installation manual of the indoor unit. NOTES: Follow the Indoor and Outdoor unit's general installation instructions. The T1 (Return Air Temperature) sensor should be near or on the indoor unit on the air inlet side. The thermistor should be installed pointing down into the duct between 2.5 ft (0.75 m) and 4 ft (1.2 m) from the return side of the fan coil. Use a ½" drill and insert the thermistor no less than 6 in (15 cm) into the duct and seal air tight around the cable. CAUTION When the outdoor unit is matched with a Multi-Family or Residential Fan Coil and due the need to braze the piping on the fan coil side it is REQUIRED to flow Nitrogen in the system while brazing the line set since a filter drier is not recommended to be used with these condensing units. 70 Thermostat BUS BAR DH R W1 W2 Y1 YY1 G O C G FV4C Indoor Unit L1 24V L2 G Power supply from indoor unit disconnect G G Power supply from outdoor unit disconnect. Two wires are line voltage and the other is a ground wire. Fig. 14 --Wiring Diagram for FV4C Fan Coil Unit IM-KSAIC03-02 Specifications subject to change without notice. Dash line means disconnect 9 TXV Replacement Process for Piping Adapter For FV4CNF002L00 and FV4CN(B,F)003L (Refer to Fig. 15) 1. Gain access to the Built-in TXV inside the Fan Coil Cabinet. 2. Double-wrench the TXV mechanical connector and disassemble. 3. Cut the bleed line from the TXV to the suction line and braze closed the capillary tube. 4. Remove the tail bulb from the suction line by cutting the stainless steel band. d. Ensure the brass nut is properly positioned on the adapter before brazing. e. Flow Nitrogen for brazing. f. Braze the street elbow, tubing and coupling (see Figure 16) to complete the piping adapter. g. Refer to Appendix 2 for Bushing/Reducer sizing. 5. Assemble the line set to the Piping adapter kit (331831-701 obtain through RCD). h. Adapt (where needed) and braze the liquid line to the piping adapter. a. Use "3/8" copper sweat long radius street elbow and "3/8" copper sweat coupling (field supplied). b. Field fabricate "3/8" copper tubing by cutting "3 3/4" length. c. Temporarily remove the Teflon gasket from the tip of the piping adapter. i. Alternate for steps "A", "B", and "F": Use a tubing bender to bend the end of the "3/8" liquid line, cut the tip so that the bend length is "1 3/4" from the outer edge of the tubing (see Figure 17). 6. Place Teflon gasket on the brass tip of the Piping Adapter and insert into the aluminum distributor head. Thread piping adapter brass nut onto the distributor line and tighten - finger tight + 1/2 turn. Fig. 15 --Piping Adapter Replacement Fig. 16 -- Braze Street Elbow Fig. 17 -- Bend Liquid Line Basic Setup for the FV4C "EASY SELECT" Printed-Circuit Board BASIC FAN COIL CONFIGURATION The following basic configuration of the fan coil will provide AHRI rated performance of the heat pump: A. AUX HEAT KW/CFM - Select the heater range for the size electric heater installed. B. AC/HP SIZE - Select system size installed. For size 12K select 018 on the board For sizes 18 - 36 select the nominal connector on the board. C. SYSTEM TYPE Select system type D. AC/HP CFM ADJUST - Select NOM. E. ON/OFF DELAY - Select 0/90 profile. F. CONTINUOUS FAN - Select desired fan speed when thermostat is set to continuous fan. For size 12K select "MED" Fig. 18 -- Detail of FV4C Printed-Circuit Board 10 Specifications subject to change without notice. IM-KSAIC03-02 DIP SWITCHES CONFIGURATION The 24V INTERFACE KIT must be configured to operate properly with the system components with which it is installed. To successfully configure the system, move the Dip Switches to match the components and functions used. NOTE: Properly identify the DIP switch number marked on the board of the 24V interface as SW1 through SW4 before selecting the options. On each DIP switch block the numbers 1 and 2 would be marked. DIP Switch 2-1 Used for selection of the system: Cooling Only or Heat Pump. SW2-1 ON OFF Table 10 -- DIP Switch 2-1 Result Cooling Only Heat Pump Note Default DIP Switch 2-2 Used for freeze protection of the indoor coil (only available on Scenarios 1 through 3). Table 11 -- DIP Switch 2-2 SW2-2 Result Note ON Fan does not stop OFF Fan will stop if the indoor coil temperature is low Default NOTE: Applicable only to Ductless Style Indoor Heat Pump units in Heating Mode. Fig. 19 --DIP Switch Definitions DIP Switch 1-1 Used to turn ON or OFF the diagnostic code display LED on the control board of the 24V Interface (see Fig. 20). SW1-1 ON OFF Table 8 -- DIP Switch 1-1 Result Display on Display off Note Default DIP Switch 3-1 On Ductless Systems, Dry is used with thermostats with a Dry Function output. SW3-1 ON OFF Table 12 -- DIP Switch 3-1 Result Dry Mode Used on future applications Note Default DIP Switch 3-2 Used to increase the compressor frequency in case the set point has not been reached after 1 hour or 3 hours of operation. The unit will keep operating as Variable Speed on both cases. SW3-2 ON 1h OFF 3h Table 13 -- DIP Switch 3-2 Result Note Default Fig. 20 --LED DIP Switch 1-2 Used for selection of the indoor unit type. SW1-2 ON Table 9 -- DIP Switch 1-2 Result Sets - Both Ductless Indoor and Outdoor Units (For Scenarios 1-3) Outdoor only (Hybrid Solution) (For Scenario 4) OFF ----- Compatible with other 24V indoor units Fan Coil/Furnace/Cased Coil. Note Default (see NOTES* below) NOTES*: 1. Need to remove the indoor unit throttle (piston/TXV/ orifice); 2. Indoor fan will stop during defrost and will start again 30 seconds after the defrost cycle is complete on the outdoor unit. G1, G2 and G3 on the 24V interface will not provide any fan output signal to the Indoor Fan during the defrost cycle plus 30 seconds. DIP Switch 4-1 Not required. Used on future applications. Select the indoor unit's fan only mode. SW4-1 ON OFF Table 14 -- DIP Switch 4-1 Result The SW4-2 is available under fan only mode The SW1-2 is available Note Default DIP Switch 4-2 Not required. Used on future applications. Select the indoor unit's fan speed (when selecting DIP switch 4-1). Table 15 -- DIP Switch 4-2 SW4-2 ON OFF Result Medium fan speed High fan speed Note Default NOTE: If the SW4-1 is ON, the SW4-2 takes effect, otherwise the SW1-2 takes effect. NOTE: If this 24V interface is matched with Non-Ductless indoor unit, the DIP switch must be set to OFF. IM-KSAIC03-02 Specifications subject to change without notice. 11 ERROR CODES For ease of service, the 24V Interface is equipped with a diagnostic code display LED on the control board (ensure the 24V interface is installed with the directional arrow pointing up to successfully read the error code). Refer to the indoor or outdoor unit's service manual as listed in Table 16 for a troubleshooting breakdown. Display E0 E2 E3 E4 E5 EC F0 F1 F2 F3 F4 F5 F6 P0 P1 P2 P3 P4 -P6 IN 0U 00 01 02 03 04 05 Table 16 -- Error Codes Malfunction and Protection Indication Indoor EEPROM error Cross-zero detection error Indoor fan speed malfunction Indoor room temperature sensor error Evaporator coil temperature sensor error Refrigerant leak detection system malfunction Current overload protection Outdoor ambient temperature sensor (T4) malfunction Condenser coil temperature sensor (T3) malfunction Condenser coil temperature sensor (T5) malfunction Outdoor unit EEPROM parameter error Outdoor fan speed has been out of control T2b sensor error Inverter module (IPM) malfunction Over-voltage or under-voltage protection Compressor top high temperature protection (OLP) Low ambient temperature cut off in heating Compressor drive malfunction Mode conflict Compressor low-pressure protection 24V Interface and indoor unit communication malfunction 24V Interface (indoor unit) and outdoor unit communication malfunction 24V Interface successful power up and in standby System operating in cooling mode System operating in heating mode System operating in fan mode System operating in dehumidify mode (not a recommended application for FV4C units) System operating with Auxiliary heater active (not a recommended application) Service Manual Reference Indoor Service Manual Indoor or Outdoor Service Manual Indoor Service Manual Indoor Service Manual Indoor Service Manual Indoor or Outdoor Service Manual Outdoor Service Manual Outdoor Service Manual Outdoor Service Manual Outdoor Service Manual Outdoor Service Manual Outdoor Service Manual Indoor or Outdoor Service Manual Outdoor Service Manual Outdoor Service Manual Outdoor Service Manual Outdoor Service Manual Outdoor Service Manual Indoor Service Manual Outdoor Service Manual Indoor Service Manual (E1) Indoor Service Manual (E1) Operational Code Operational Code Operational Code Operational Code Operational Code Operational Code 12 Specifications subject to change without notice. IM-KSAIC03-02 WIRING DIAGRAM ON ON Dry Mode NOTE: If the SW4-1 is ON, the SW4-2 takes effect, otherwise the SW1-2 takes effect. Fan Low/Medium/High Fig. 21 --Wiring Diagram GLOSSARY: · Remote Control (CN14): This is a dry contact to control the indoor unit on and off remotely. · Alarm Output (CN7): This is a dry contact that opens and closes based on the alarm status of the system. This is a normally closed Dry contact. · Work Output (CN6): This contact is a dry contact that open and closes based on the system running or not running condition.When the compressor is active this contact closes. FAN OUTPUTS: · (G1) Low Fan Speed · (G1 + G2) Medium Fan Speed · (G1+ G2 + G3) High Fan Speed For single fan speed only, G1 has to be connected. IM-KSAIC03-02 Specifications subject to change without notice. 13 APPENDIX 1 - COMPATIBILITY CHART The 24V INTERFACE KIT is compatible with most thermostats matched with the Fan Coils listed in Tables 17, 18, and 19. Before installation, check the compatibility of your Outdoor and Indoor Fan Coil. Professional installation is recommended. Select Proper Blower Speed For the Fan Coil Before operating unit, ensure that the proper blower speed has been selected. Fan speeds are selected manually. Refer to the installation manual of the indoor unit for instructions on how to change the fan speed and select the taps (see Tables 17, 18, and 19) for the proper matches. 24V Interface Fan Speed Wiring (See Page 9 for Wiring Connections) G3 is the High Fan Speed terminal and should be connected to the High tap speed inputs at the fan coil. G2 is the Medium Fan Speed terminal and should be connected to the Medium tap speed inputs at the fan coil. Tap G1 is Low Fan Speed terminal and should be connected to the Low tap speed inputs at the fan coil. The 24V interface may be connected to a low Tap Speed, based on the installation instructions of the indoor unit. Table 17 -- Compatibility with FMA4 Fan Coils Indoor FMA4 Vertical Fan Coil VoltPh@60Hz 208/230-1 Kit Number Nominal System Size MBTUH 12 18 KSAIC0301230 24 30 36 Indoor Model Number FMA4X1800AL FMA4X1800AL FMA4X2400AL FMA4X3000AL FMA4X3000AL Outdoor Model Number 38MAQB12R--3 38MAQB18R--3 38MAQB24R--3 38MAQB30R--3 38MAQB36R--3 Recommended Maximum Indoor Fan Speed Tap Number Tap 1 Tap 2 Tap 5 Tap 2 Tap 4 Table 18 -- Compatibility with FMC4 Cased Horizontal Fan Coils Indoor VoltPh@60Hz Kit Number Nominal System Size MBTUH Indoor Model Number 12 FMC4 18 Cased Horizontal 208/230-1 KSAIC0301230 24 Fan Coil 30 36 FMC4Z1800AL1 FMC4Z1800AL1 FMC4Z2400AL1 FMC4Z3000AL1 FMC4Z3600AL1 Outdoor Model Number 38MAQB12R--3 38MAQB18R--3 38MAQB24R--3 38MAQB30R--3 38MAQB36R--3 Recommended Maximum Indoor Fan Speed Tap Number Low (Black) Medium low (Blue) Medium low (Blue) Medium high (White) Medium high (White) Table 19 -- Compatibility with FMU4 Uncased Horizontal Fan Coils Indoor VoltPh@60Hz Kit Number Nominal System Size MBTUH Indoor Model Number 12 FMU4 18 Uncased Horizontal 208/230-1 KSAIC0301230 24 Fan Coil 30 36 FMU4Z1800AL1 FMU4Z1800AL1 FMU4Z2400AL1 FMU4Z3000AL1 FMU4Z3600AL1 Outdoor Model Number 38MAQB12R--3 38MAQB18R--3 38MAQB24R--3 38MAQB30R--3 38MAQB36R--3 Recommended Maximum Indoor Fan Speed Tap Number Low (Black) Medium low (Blue) Medium low (Blue) Medium high (White) Medium high (White) Indoor FV4 Fan Coil VoltPh@60Hz 208/230-1 Table 20 -- Compatibility with FV4 Fan Coils Kit Number Nominal System Size MBTUH Indoor Model Number Outdoor Model Number 12 FV4CNF002L00 38MAQB12R--3 18 FV4CNF002L00 38MAQB18R--3 KSAIC0301230 24 FV4CNF002L00 38MAQB24R--3 30 FV4CN(B,F)003L 38MAQB30R--3 36 FV4CN(B,F)003L 38MAQB36R--3 Recommended Fan Speed Wiring and Configuration Connect G1 on the 24V interface to G on the fan coil. Under the configuration taps for AC/HP CFM ADJUST, the recommendation is to select NOM. Refer to Page 10 and Appendix 5 for setup. 14 Specifications subject to change without notice. IM-KSAIC03-02 APPENDIX 2 - PIPING ADAPTER BUSHINGS/REDUCERS Model FMA FMC FMU FV4 Size 12-18 24-36 12-18 24-36 Bushings/Reducers Required (Field Supplied) 3/4" - 1/2" Suction only 3/8" - 1/4" Liquid 3/4" - 5/8" Suction only 3/8" - 1/4" Liquid 3/8" - 1/4" Liquid and 3/4" - 1/2" Suction 3/4" - 5/8" Suction only A piping adapter kit 331831-701 (sold through RDC) is necessary when removing the factory supplied TXV on the indoor unit. APPENDIX 3 - FV4C TRANSFORMER This transformer is factory wired for 230V AC operation. For 208V AC applications, disconnect the black wire from the 230-v terminal on the transformer primary side and connect it to the 208V terminal (See Fig. 22). Fig. 22 --Transformer Connections on FV4C Fan Coils APPENDIX 4 - ADDITIONAL REFRIGERANT CHARGE FOR CONVENTIONAL FAN COILS When matching the FMA4 and FMC/FMU indoor units, the size 12 units require 12.4 oz. (350 g) more refrigerant due to the size of the indoor coil. No refrigerant addition is necessary for the FV4 (any size). All the outdoor units are shipped from the factory pre-charged for 25ft of piping length. See installation instructions of the outdoor unit for additional charge requirements on longer piping lengths. IM-KSAIC03-02 Specifications subject to change without notice. 15 APPENDIX 5 - FV4C AIRFLOW DELIVERY Table 21 -- FV4C Fan Coil Airflow Delivery (CFM) in Heat Pump Only Heating Mode OPERATING MODE UNIT SIZE OUTDOOR UNIT CAPACITY SINGLE SPEED APPLICATION HEAT PUMP EFFICIENCY FAN ONLY LO MED HIGH 012 002 018 024 525 350 380 470 525 350 380 470 700 350 505 630 003 030 036 875 1050 415 630 785 470 755 945 NOTES: 1. The above airflows result with the AC, HP CFM ADJUST select jumper set on NOM. 2. Air flow can be adjusted +15% or -10% by selecting HI or LO respectively for all modes except fan only. 3. Dry coil at 230 volts and with 10KW heater and filter installed. 4. Airflows shown are at standard air conditions. Copyright 2019 CAC/BDP D 3300 Riverwood Parkway Atlanta GA, 30339 Edition Date: 08/19 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. IM-KSAIC03-02 Replaces: IM-KSAIC03-01Acrobat Distiller 19.0 (Windows)