MODELS URH/CA-09WDC URH/CA-12WDC URH/CA-18WDC URH/CA-24WDC URH/CA-36WDC

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Heat Pump MODELS URH/CA-09WDC URH/CA-12WDC URH/CA-18WDC URH/CA-24WDC URH/CA-36WDC

Table of Contents SAFETY CONSIDERATIONS...iv Part1 Specifications... 1 1. Specifications...2 1.1 Parameter... 2 1.2 Nameplate...4 Part2 Exploded views and material code...8 1. Exploded views and material code...9 1.1 Exploded View (indoor unit)vrha-18/24/36/48an1dc/inb... 9 1.2 Material Code(indoor unit)vrha-18/24/36/48an1dc/inb...10 1.3 Exploded View (indoor unit)vrha-18/24/36an1dc/inb... 11 1.4 Material Code(indoor unit)vrha-18/24/36an1dc/inb... 12 1.5 Exploded View (indoor unit)vrha-48/60an1dc/inb... 13 1.6 Material Code(indoor unit)vrha-48an1dc/inb... 14 Part 3 Printed Circuit Board Connector Wiring Diagram... 15 1. Indoor unit... 16 1.1 VRHA-18/24/36/48AN1DC/INB... 16 2. Outdoor unit... 19 2.1 VRHA-18AN1DC/INB...19 2.2 VRHA-24/36AN1DC/INB... 25 2.3 VRHA-48AN1DC/INB...31 Part 4 Common Wearing Parts... 40 1. Common wearing parts (indoor unit)... 41 1.1 Sensor... 41 1.2 Linear Transformer... 42 1.3 Pump... 43 1.4 Wired remote control...45 2. Common wearing parts (outdoor unit)...46 2.1 Sensor... 46 2.2 Fan Motor...47 2.3 Filter Capacitor...50 2.4 Fan motor capacitor... 51 ii

Table of Contents Part 5 Comparison Table... 53 1. Wired Controller... 54 1.1 Function...54 1.2 Operating Instructions...55 1.3 Error Codes and Analysis...57 2.Pressure Refrigerant Loop Temperature Control Table... 58 2.1 R410 Table...58 3. Sensors Resistance Table...59 3.1 Compressor Exhaust Temperature Sensor Resistance... 59 3.2 Ambient/Indoor/Outdoor Pipe Sensor Resistance...60 Part 6 Appendix...61 1. Piping Diagrams...62 1.1 Indoor Units... 62 1.2 Outdoor Units... 63 2. Wiring Diagrams... 64 2.1 Indoor Units... 64 2.2 Outdoor Units...65 iii

Safety Considerations 1. SAFETY CONSIDERATIONS Read these SAFETY CONSIDERATIONS carefully before performing any repair work. Comply with these safety symbols without fail. Meanings of DANGER, WARNING, CAUTION, and NOTE Symbols: DANGER...Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING...Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. CAUTION...Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices. NOTE...Indicates situations that may result in equipment or property-damage accidents only. 1.1 Safety Considerations for Repair DANGER If refrigerant gas leaks during repair or service, ventilate the area immediately. Refrigerant gas may produce toxic gas if it comes into contact with flames. Refrigerant gas is heavier than air and replaces oxygen. In the event of an accident, a massive leak could lead to oxygen depletion, especially in basements, and an asphyxiation hazard could occur leading to serious injury or death. Do not start or stop the air conditioner operation by plugging or unplugging the power cable plug if a plug is used. Plugging or unplugging the power cable plug to operate the equipment may cause an electrical shock or fire. Use parts listed in the service parts list and appropriate tools to conduct repair work. The use of inappropriate parts or tools may cause an electrical shock or fire. Disconnect power before disassembling the equipment for repairs. Working on the equipment that is connected to the power supply may cause an electric shock. If it is necessary to supply power to the equipment to conduct repairs or to inspect the circuits, do not touch any electrically charged sections of the equipment. The step-up capacitor supplies high-voltage electricity to the electrical components of the outdoor unit. Discharge the capacitor completely before conducting repair work. A charged capacitor may cause an electrical shock. If refrigerant gas is discharged during repair work, do not touch the discharged refrigerant gas. The refrigerant gas may cause frostbite. Use only pipes, flare nuts, tools, and other materials designed specifically for R410A refrigerant systems. Never use tools or materials designed for R22 refrigerant systems on an R410A refrigerant system. Doing so can cause a serious accident or an equipment failure. Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections may cause excessive heat generation, fire, or electrical shock. WARNING Prior to disconnecting the suction or discharge pipe from the compressor at the welded section,pump-down the refrigerant gas completely in a well-ventilated place first. If there is refrigerant gas or oil remaining inside the compressor, the refrigerant gas or oil can discharge when the pipe is being disconnected and it may cause an injury. Wear a safety helmet, gloves, and a safety belt when working at an elevated height of more than 6.5 ft (2 m). Insufficient safety measures may cause a fall resulting in injury. Do not mix air or gas other than the specified refrigerant R410A to the refrigerant system. If air enters the refrigerant systems, it can cause an excessive high pressure resulting in equipment damage and injury. When relocating the equipment, check if the new installation site has sufficient strength to withstand the weight of the equipment. If the installation site does not have sufficient strength and the equipment is not properly secured, the equipment may fall and cause injury. Securely fasten the outside unit terminal cover (panel). If the terminal cover/panel is not fastened properly, dust or water may enter the outside unit causing fire or electric shock. When relocating the system, keep the refrigerant circuit free from substances other than the specified refrigerant (R-410A) such as air. Any presence of air or other foreign substance in the refrigerant circuit can cause an abnormal pressure rise or rupture, resulting in injury. If refrigerant gas leaks, locate the leaking point and repair it before charging refrigerant. After charging refrigerant, check for refrigerant leaks. If the leaking point cannot be located and the repair work must be stopped, perform a pump-down and close the service valve to prevent the refrigerant gas from leaking into the room. The refrigerant gas itself is harmless, but it may generate toxic gases if it comes into contact with flames. CAUTION Do not repair the electrical components with wet hands. Working on the equipment with wet hands may cause an electrical shock. Do not clean the air conditioner by splashing water on it. Washing the unit with water may cause an electrical shock. iv

Safety Considerations Ground the unit when repairing equipment in a humid or wet place to avoid electrical shocks. Turn off the power when cleaning the equipment to prevent internal fans that rotate at high speed from starting suddenly as they can cause injury. Let the refrigerant lines cool down before performing any repair work. Working on the unit when the refrigerant lines are hot may cause burns. All welding and cutting operations must be done in a well-ventilated place to prevent the accumulation of toxic fumes or possibly oxygen deficiency to occur. Check the grounding and repair it if the equipment is not properly grounded. Improper grounding may cause an electrical shock. Measure the insulation resistance after the repair. The resistance must be 1M or higher. Faulty insulation may cause an electrical shock. NOTE Check the drainage of the indoor unit after finishing repair work. Faulty drainage may cause water to enter the room resulting in wet floors and furniture. Do not tilt the unit when removing it. The water inside the unit may spill resulting in wet floors and furniture. Dismantling of the unit, disposal of the refrigerant, oil, and additional parts, should be done in accordance with the relevant local, state, and national regulations. Check the unit foundation for damage on a continual basis, especially if it has been in use for a long time. If left in a damaged condition, the unit may fall and cause injury. If the installation platform or frame has corroded, have it replaced. A corroded platform or frame may cause the unit to fall resulting in injury. If the unit has a power cable plug and it is dirty, clean the plug before securely inserting it into a power outlet. If the plug has a loose connection, tighten it or it may cause electrical shock or fire. CAUTION After replacing the battery in the remote controller, dispose of the old battery to prevent children from swallowing it. If a child swallows the battery, see a doctor immediately. Never remove the fan guard of the unit. A fan rotating at high speed without the fan guard is very dangerous. Before cleaning the unit, stop the operation of the unit by turning the power off or by pulling the power cable plug out from its receptacle. Otherwise an electrical shock or injury may result. Do not wipe the controller operation panel with benzene, thinner, chemical dust cloth, etc. The panel may get discolored or the coating can peel off. If it is extremely dirty, soak a cloth in a water-diluted neutral detergent, squeeze it well, and wipe the panel clean. Then wipe it with another dry cloth. 1.2 Safety Considerations for Users DANGER Never attempt to modify the equipment. Doing so can cause electrical shock, excessive heat generation, or fire. If the power cable and lead wires have scratches or have become deteriorated, have them replaced. Damaged cable and wires may cause an electrical shock or fire. Do not use a joined power cable or an extension cord, or share the same power outlet with other electrical appliances as it may cause an electrical shock or fire. Use an exclusive power circuit for the equipment. Insufficient circuit amperage capacity may cause an electrical shock or fire. WARNING Do not damage or modify the power cable. Damaged or modified power cables may cause an electrical shock or fire. Placing heavy items on the power cable or pulling the power cable may damage the cable. v

Specifications Part1 Specifications 1. Specifications...2 1.1 Parameter... 2 1.2 Nameplate...4 1

Specifications 1.Specifications 1.1 Parameter Model VRHA-18AN1DC/INB VRHA-24AN1DC/INB VRHA-36AN1DC/INB Power supply Ph-V-Hz 1,230V,60HZ Capacity BTU 15690(7840-19100) 21830(11600-26610) 28310(16030-31730) Cooling Heating Input W 1620(600-2250) 2243(800-2550) 2875(1250-3650) Rated current A 7.0(2,65~10.05) 9.78(3.52~11.68) 12.58(5.45-15.98) EER BTU/W 9.79 9.78 9.82 Capacity BTU 17050(8180-21150) 23540(129600-29340) 30707(17050-37530) Input W 1219(600-2080) 1703(800-2400) 2267(1250-3400) Heating water GAL/h 25 34 44 Rated current A 5.31(2.65~10.05) 7.44(3.52-11.01) 9.88(5.45-14.88) COP BTU/W 13.98 13.81 13.54 First hour water production GAL/h 70 75 100 water pump Tank unit Input (L/M/H) W 55/70/100 55/70/100 135/190/245 Rated current A 0.25/0.35/0.45 0.25/0.35/0.45 0.60/0.85/1.10 Dimension (D*H) Inch φ21.8x58.7 φ23.4x60.8 φ27.3x61.6 Packing (W*H*D) Inch 24.6X24.6X61.2 26.1X26.1X63.6 30.4X30.4X66.3 Net/Gross weight Ibs 96.8/105.8 105.8/114.8 131.6/140.4 Dimension (W*H*D) Inch 29 18.5 9.2 29 18.5 9.2 29 18.5 9.2 Indoor unit Packing (W*H*D) Inch 31 22.8 11.3 31 22.8 11.3 31 22.8 11.3 Net/Gross weight Ibs 67.5/69.7 72.0/74.5 76.5/78.7 Dimension (W*H*D) Inch 33X23.7X11.1 32.3X27.7X12.1 34.3X31.2X14 Outdoor unit Packing (W*H*D) Inch 38.2X25X15.6 37.8X29.1X16 40X32.8X17.7 Net/Gross weight Ibs 90/94.4 104.6/108.8 128.2/132.5 Noise level Indoor db(a) 30-40 30-40 34-46 Outdoor db(a) 52 54 55 Outdoor air flow cfm 1058 1352 1647 Design pressure Psi 600 600 600 MAX.Pipe Length Ft 32.81 49.21 49.21 MAX.Height Difference Ft 26.25 32.81 32.81 Pipe Size Liquid/Gas Inch 1/4-1/2 3/4-5/8 3/4-5/8 Refrigerant R410a R410a R410a Cooling water range 42-88 42-88 42-88 Heating water range 68-140 68-140 68-140 Ambient temp -13-116 -13-116 -13-116 Water tank volume GAL 66 80 106 Rated cooling test conditions:outdoor dry bulb temperature/wet bulb temperature95.0 \75.0 Influent temperature:54.0 Effluent temperature: Rated heating test conditions:outdoor dry bulb temperature/wet bulb temperature47.0 \43.0 Influent temperature:86.0 The difference between the fixed-frequency and frequency of:: Effluent temperature: Fixed-frequency machine: the outdoor unit operating ambient temperature range is relatively narrow (19-109 ) and can not adjust the size of the cooling / heating capacity of the indoor temperature changes, the machine open between stops, the indoor temperature fluctuations, feels suddenly cold suddenly hot. Frequency Machine: the outdoor unit operating ambient temperature range is wide (-13-126 ) and can change depending on the temperature and adjust the size of the room cooling / heating capacity, the indoor temperature a smooth transition, the temperature fluctuation is small, automatic climate control, power consumption energy-saving effect is remarkable. 2

Specifications Model VRHA-48AN1DC/INB VRHA-60AN1DC/INB VRHA-86AN1DC/INB Power supply Ph-V-Hz 1,230V,60HZ 3,380~415V,60HZ 3,380~415V,60HZ Capacity BTU 37180(23880-45720) 51860(27970-54590) 85290(45030-89050) Cooling Input W 3818(1650-4950) 5352(2100-5900) 8834(4380-10850) Rated current A 16.98(7.19-21.89) 23.32(9.18-25.88) 13.43(6.66-15.98) EER BTU/W 9.75 9.68 9.62 Capacity BTU 40940(26610-49130) 56970(30020-59700) 88020(47080-99620) Input W 3037(1650-4650) 4417(2100-5700) 7411(4380-10100) Heating Heating water GAL/h 55 78 120 Rated current A 13.2(7.19-20.84) 19.28(9.18-24.98) 11.26(6.66-15.35) COP BTU/W 13.47 12.89 11.87 First hour water production GAL/h 150 205 315 water pump Input (L/M/H) W 135/190/245 135/190/245 245/308/380 Rated current A 0.60/0.85/1.10 0.60/0.85/1.10 1.10/1.34/1.66 Dimension (D*H) Inch φ29.6x71.7 φ33.5x79.6 φ33.5x83.1 Tank unit Packing (W*H*D) Inch 33.2X33.2X75.7 Net/Gross weight Ibs 145.6/155.3 176.6/180 208.1/215.6 Dimension (W*H*D) Inch 29 18.5 9.2 29 18.5 9.2 29 18.5 9.2 Indoor unit Packing (W*H*D) Inch 31 22.8 11.3 31 22.8 11.3 31 22.8 11.3 Net/Gross weight Ibs 81.0/83.2 90.0/92.2 108.0/112.2 Dimension (W*H*D) Inch 49.1X32.4X12.1 49.5X36.3X15.2 56.5X23.8X54.6 Outdoor unit Packing (W*H*D) Inch 49.5X37.8X16 50X41.7X19.1 61.6X25X58.5 Net/Gross weight Ibs 211.5/231.7 229.5/249.7 409.0/434.2 Noise level Indoor db(a) 34-46 34-46 38-52 Outdoor db(a) 58 60 64 Outdoor air flow cfm 2117 3294 4823 Design pressure Psi 600 600 600 MAX.Pipe Length Ft 65.62 82.02 98.43 MAX.Height Difference Ft 49.21 49.21 82.02 Pipe Size Liquid/Gas Inch 1/2-3/4 1/2-3/4 1/2-7/8 Refrigerant R410a R410a R410a Cooling water range 42-88 42-88 42-88 Heating water range 68-140 68-140 68-140 Ambient temp -13-116 -13-116 -13-116 Water tank volume GAL 160 212 333 Rated cooling test conditions:outdoor dry bulb temperature/wet bulb temperature95.0 \75.0 Influent temperature:54.0 Effluent temperature: Rated heating test conditions:outdoor dry bulb temperature/wet bulb temperature47.0 \43.0 Influent temperature:86.0 Effluent temperature: The difference between the fixed-frequency and frequency of:: Fixed-frequency machine: the outdoor unit operating ambient temperature range is relatively narrow (19-109 ) and can not adjust the size of the cooling / heating capacity of the indoor temperature changes, the machine open between stops, the indoor temperature fluctuations, feels suddenly cold suddenly hot. Frequency Machine: the outdoor unit operating ambient temperature range is wide (-13-126 ) and can change depending on the temperature and adjust the size of the room cooling / heating capacity, the indoor temperature a smooth transition, the temperature fluctuation is small, automatic climate control, power consumption energy-saving effect is remarkable. 3

Specifications 1.2 Nameplate VRHA-18AN1DC/INB 4

Specifications VRHA-24AN1DC/INB 5

Specifications VRHA-36AN1DC/INB 6

Specifications VRHA-48AN1DC/INB 7

Exploded Views And Material Code Part2 Exploded views and material code 1. Exploded views and material code...9 1.1 Exploded View (indoor unit)vrha-18/24/36/48an1dc/inb... 9 1.2 Material Code(indoor unit)vrha-18/24/36/48an1dc/inb...10 1.3 Exploded View (indoor unit)vrha-18/24/36an1dc/inb... 11 1.4 Material Code(indoor unit)vrha-18/24/36an1dc/inb... 12 1.5 Exploded View (indoor unit)vrha-48/60an1dc/inb... 13 1.6 Material Code(indoor unit)vrha-48an1dc/inb... 14 8

Exploded Views And Material Code 1. Exploded views and material code 1.1 Exploded View (indoor unit)vrha-18/24/36/48an1dc/inb 9

Exploded Views And Material Code 1.2 Material Code(indoor unit)vrha-18/24/36/48an1dc/inb NO. NAME Q'TY 1 Exhaust Pipe 1 2 Inlet pipe 1 3 Outlet pipe 1 4 Electrical box 1 5 Main Board 1 6 Terminal 1 7 Control panel 1 8 Clasp hands 2 9 Cable Glands 3 10 Gas valve 1 11 Liquid valve 1 12 Outlet water connection 1 13 Inlet Pipe connection 1 14 Nylon goblet 4 15 Water Pump 1 16 Plate in bracket 1 17 Panel 1 18 Plate heat exchanger 1 19 Box tank 1 20 Electrical cover 1 21 Fixing piece 1 22 Press clip 1 23 Locks 1 24 Linear transformer 1 10

Exploded Views And Material Code 1.3 Exploded View (indoor unit)vrha-18/24/36an1dc/inb 11

Exploded Views And Material Code 1.4 Material Code(indoor unit)vrha-18/24/36an1dc/inb NO. NAME Q'TY VRHA-18AN1DC/INB VRHA-24AN1DC/INB VRHA-36AN1DC/INB 1 Top panel 1 13.A.008-13008002 13.A.008-13008003 13.A.008-13008004 2 Back grill 1 13.A.009-13009002 13.A.009-13009003 13.A.009-13009004 3 Axial fan 1 16.B.001-16001011 16.B.001-16001012 16.B.001-16001013 4 Condenser 1 19.B.001-19001010 19.B.001-19001014 19.B.001-19001017 5 Handle 1 16.A.005-16005001 16.A.005-16005009 16.A.005-16005009 6 Front grill 1 16.A.005-16005006 16.A.005-16005048 16.A.005-16005008 7 Front panel 1 13.A.007-13007003 13.A.007-13007004 13.A.007-13007005 8 Bottom plate 1 13.A.001-13001013 13.A.001-13001018 13.A.001-13001022 9 Compressor Capacitor 1 10 Compressor 1 13.A.003-13003010 13.A.003-13003015 13.A.003-13003020 11 Reactance 1 27.J.002-27002002 27.J.003-27003001 27.J.003-27003001 12 Motor bracket 1 16.F.008-16008002 16.F.008-16008007 16.F.008-16008004 13 Outdoor motor 1 18.A.001-18001003 18.A.001-18001014 18.A.001-18001014 14 Outdoor fan 1 24.D.001-24001006 24.D.001-24001008 24.D.001-24001010 15 Four-way valve 1 12.C.006-12006004 12.C.006-12006003 12.C.006-12006002 16 Front panel 1 13.A.002-13002004 17 Gas valve 1 21.A.001-21001001 21.A.001-21001005 21.A.001-21001007 18 Liquid valve 1 21.A.002-21002001 21.A.002-21002006 21.A.002-21002007 19 Modules 1 12.C.007-12007002 12.C.007-12007003 12.C.007-12007004 20 Solenoid coil 1 27.J.001-27001003 27.J.001-27001005 27.J.001-27001006 21 Right side panel 1 13.A.006-13006003 13.A.006-13006005 13.A.006-13006006 22 Electrical Inductance 1 16.A.005-16005004 16.A.005-16005004 16.A.005-16005007 23 Capacitance clip 1 13.A.014-13014001 24 Film Capacitor 1 25 Retaining clip 1 16.A.005-16005050 16.A.005-16005050 16.A.005-16005050 26 Electrical box 1 13.A.011-13011002 13.A.011-13011004 13.A.011-13011004 27 Fan start capacitor 1 30.B.001-30001002 30.B.001-30001003 30.B.001-30001006 28 Control PCB 1 26.B.003-26003004 26.B.003-26003005 26.B.003-26003006 29 Modules 1 26.B.001-26001003 26.B.001-26001001 26.B.001-26001001 30 Heatsink 1 26.B.001-26001003 26.B.001-26001001 26.B.001-26001001 31 Motor bracket 1 13.A.004-13004009 13.A.004-13004013 13.A.004-13004018 32 Electronic expansion valve 1 12.C.007-12007002 12.C.007-12007003 12.C.007-12007004 33 Pressure protection 2 12

Exploded Views And Material Code 1.5 Exploded View (indoor unit)vrha-48/60an1dc/inb 13

Exploded Views And Material Code 1.6 Material Code(indoor unit)vrha-48an1dc/inb NO. NAME Q'TY VRHA-48AN1DC/INB 1 Modules 1 26.B.001-26001006 2 Control board 1 26.B.003-26003008 3 Power Plate 1 26.B.003-26003001 4 PFC inductor 1 27.J.003-27003001 5 Terminal Block 1 27.A.001-27001009 6 Left Fence 1 13.A.009-13009006 7 Partition plate 1 13.A.003-13003022 8 After fencing 1 13.A.009-13009005 9 Four-way valve 1 10 Buckle 1 16.A.008-16008094 11 Right side plate 1 13.A.006-13006007 12 Back to the trachea 1 22.A.003-22003040 13 Exhaust pipe 1 22.A.002-22002040 14 Gas valve 1 21.A.001-21001007 15 Liquid valve 1 21.A.002-21002007 16 Electronic expansion valve 1 20.B.001-202001004 17 Reservoir 1 18 rubber pad 1 18.B.001-18001039 19 Compressor 1 18.A.001-18001012 20 Chassis 1 13.A.001-13001024 21 Motor bracket 1 13.A.004-13004021 22 Motor 1 24.D.001-24001007 23 Blade 1 16.B.001-16001012 24 Pumping hands 1 16.A.005-16005009 25 Net 1 16.A.005-16005048 26 Cover 1 13.A.008-13008005 27 Electric lid 1 13.A.012-13012006 28 Electrical box 1 13.A.011-13011006 29 Condenser 1 19.B.001-19001020 14

Printed Circuit Board Connector Wiring Diagram Part 3 Printed Circuit Board Connector Wiring Diagram 1. Indoor unit...16 1.1 VRHA-18/24/36/48AN1DC/INB... 16 2. Outdoor unit... 19 2.1 VRHA-18AN1DC/INB...19 2.2 VRHA-24/36AN1DC/INB... 25 2.3 VRHA-48AN1DC/INB...31 15

Printed Circuit Board Connector Wiring Diagram 1. Indoor unit 1.1 VRHA-18/24/36/48AN1DC/INB Connectors PCB(1) (Control PCB) (indoor unit) CN1) CN2) CN4) CN5) CN5) CN9) CN11) CN12) Connect the AC positive Connect the transformer input Connect the AC negative Connect wired remote control Connect the transformer output Connect water flow protection Connect indoor and outdoor communication Connect the tank sensor Note: Other designations PCB(1) (Control PCB) (indoor unit) SW1) FUSE1) Forced operation ON / OFF switch Fuse(3.15A) 16

Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB (indoor unit) 17

Printed Circuit Board Connector Wiring Diagram PCB Photo PCB(1): Control PCB (indoor unit) 18

Printed Circuit Board Connector Wiring Diagram 2. Outdoor unit 2.1 VRHA-18AN1DC/INB Connectors PCB(1) Control PCB (outdoor unit) CN1) CN4) CN5) CN6) CN8) CN10) CN11) CN14) CN15) CN16) CN17) CN21) CN23) CN24) CN27) CN39) CN2 CN9) Connect filtering capacitor Connect the AC positive Connect electronic expansion valve Connect the AC negative Connect to ground Connect bridge heap negative Connect parts negative Connect the fan motor Connect the sensor Connect compressed mechanical and electrical heating Connect indoor and outdoor communication Connect the four-way valve coil Connect low pressure protection Connect high pressure protection Connect the IPM module communication Connect the trouble light Connect the IPM module Note: Other designations PCB(1) Control PCB (outdoor unit) C3 C7) Varistor F1) Fuse(3.15A) 19

Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1) Control PCB (outdoor unit) 20

Printed Circuit Board Connector Wiring Diagram PCB Photo PCB(1) Control PCB (outdoor unit) 21

Printed Circuit Board Connector Wiring Diagram Connectors PCB(1) Inverter module(ipm) PCB CN614) CN500 CN504) CN501 CN502 CN503) Connect electric controller communication (outdoor) Connect electronic control unit (outdoor) Connect the compresso 22

Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1) Inverter module(ipm) PCB 23

Printed Circuit Board Connector Wiring Diagram PCB Photo PCB(1) Inverter module(ipm) PCB 24

Printed Circuit Board Connector Wiring Diagram 2.2 VRHA-24/36AN1DC/INB Connectors PCB(1) Control PCB (outdoor unit) CN1 CN10) CN4) CN5) CN6) CN8) CN11) CN14) CN15) CN16) CN17) CN21) CN23) CN24) CN27) CN39) CN2 CN9) Connect PFC board Connect the AC positive Connect electronic expansion valve Connect the AC negative Connect to ground Connect parts negative Connect the fan motor Connect the sensor Connect compressed mechanical and electrical heating Connect indoor and outdoor communication Connect the four-way valve coil Connect low pressure protection Connect high pressure protection Connect the IPM module communication Connect the trouble light Connect the IPM module Note: Other designations PCB(1) Control PCB (outdoor unit) C3 C7) Varistor F1) Fuse(3.15A) 25

Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1) Control PCB (outdoor unit) 26

Printed Circuit Board Connector Wiring Diagram PCB Photo PCB(1) Control PCB (outdoor unit) 27

Printed Circuit Board Connector Wiring Diagram Connectors PCB(1) Inverter module(ipm) PCB CN614) CN500 CN504) CN501 CN502 CN503) Connect electric controller communication (outdoor) Connect electronic control unit (outdoor) Connect the compressor PCB(2) PFC board P1) Connect bridge pile positive P5) Connect bridge heap negative P2 P4) Connect electronic control unit (outdoor) P6 P3) Connect the inductor 28

Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1) Inverter module(ipm) PCB PCB(2) PFC board 29

Printed Circuit Board Connector Wiring Diagram PCB Photo PCB(1) Inverter module(ipm) PCB PCB(2) PFC board 30

Printed Circuit Board Connector Wiring Diagram 2.3 VRHA-48AN1DC/INB Connectors PCB(1) Control PCB (outdoor unit) CN4) CN5) CN6) CN8 CN35) CN14) CN15) CN17) CN18) CN21) CN23) CN24) CN27) Connect the AC positive Connect electronic expansion valve Connect the AC negative Connect the power supply PCB Connect the fan motor Connect the sensor Connect indoor and outdoor communication Connect PFC board Connect the four-way valve coil Connect low pressure protection Connect high pressure protection Connect the IPM module communication Note: Other designations PCB(1) Control PCB (outdoor unit) F1) Fuse(3.15A 31

Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1) Inverter module(ipm) PCB 32

Printed Circuit Board Connector Wiring Diagram PCB Photo PCB(1) Control PCB (outdoor unit) 33

Printed Circuit Board Connector Wiring Diagram Connectors PCB(1) Power PCB (outdoor unit) CN2 CN8) CN3 CN9) CN4) CN5) CN6) CN7) L(AC) Connect PFC board Connect IPM module Connect the AC positive Connect the AC negative Connect bridge pile AC Connect ground Connect bridge pile AC 34

Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1) Power PCB (outdoor unit) 35

Printed Circuit Board Connector Wiring Diagram PCB Photo PCB(1) Power PCB (outdoor unit) 36

Printed Circuit Board Connector Wiring Diagram Connectors PCB(1) Inverter module(ipm) PCB CN614) CN500 CN504) CN501 CN502 CN503) Connect electric controller communication (outdoor) Connect Power PCB (outdoor unit) Connect the compressor PCB(2) PFC board CN2) CN3 CN4) CN5) CN6) CN7) Connect electric controller communication (outdoor) Connect Power PCB (outdoor unit) Connect DC rectifier bridge positive and inductors Connect the inductor Connect bridge DC negative 37

Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1) Inverter module(ipm) PCB PCB(2) PFC board 38

Printed Circuit Board Connector Wiring Diagram PCB Photo PCB(1) Inverter module(ipm) PCB PCB(2) PFC board 39

Common Wearing Parts Part 4 Common Wearing Parts 1. Common wearing parts (indoor unit)...41 1.1 Sensor... 41 1.2 Pump...42 1.3 Wired remote control...44 2. Common wearing parts (outdoor unit)... 45 2.1 Sensor... 45 2.2 Fan Motor...46 2.3 Filter Capacitor...49 2.4 Fan motor capacitor... 50 40

Common Wearing Parts 1. Common wearing parts (indoor unit) 1.1 Sensor VHRA-18/24/36/48AN1DC/INB Photo 41

Common Wearing Parts 1.2 Linear Transformer VRHA-12/18/24AN1DCT Photo 42

Common Wearing Parts 1.3 Pump VHRA-18/24AN1DC/INB Photo The system pressure, maximum 1 mpa Diameter is 20/25 model can provide: brass/bronze pump body Rotated speed P1(W) In(A) 3 100 0.45 2 70 0.35 1 55 0.25 Technical date Models Size(mm) weight(kg) volume (M 3) H H1 L G B net weight rough weight GPD20-6S 130 105 130 1"turn3/4" 130 2.7 2.9 0.004 GPD25-6S 130 105 130/180 11/2"turn1" 130 2.7 2.9 0.004 GPD32-6S 130 105 180 2"turn11/4" 130 2.7 2.9 0.004 43

Common Wearing Parts VHRA-36AN1DC/INB Photo The system pressure, maximum 1 mpa Diameter of 25 models can provide: brass, bronze pump body Diameter is 32 models can provide: stainless copper pump body Technical date Rotated speed P1(W) In(A) 3 245 1.1 2 190 0.85 1 135 0.60 Models Size(mm) Weight(kg) volume (m 3 ) H H1 L G B net weight rough weight GPD25-8S 160 130 180 11/2"turn1" 150 4.2 4.5 0.008 GPD32-8S 160 130 180 2"turn11/4or" 1/2" 150 4.2 4.5 0.008 44

Common Wearing Parts 1.4 Wired remote control VHRA-18/24/36/48AN1DC/INB Photo 45

Common Wearing Parts 2. Common wearing parts (outdoor unit) 2.1 Sensor VHRA-18/24/36/48AN1DC/INB Photo 46

Common Wearing Parts 2.2 Fan Motor VHRA-18/48AN1DC/INB Photo 47

Common Wearing Parts VHRA-24AN1DC/INB Photo 48

Common Wearing Parts VHRA-36AN1DC/INB Photo 49

Common Wearing Parts 2.3 Filter Capacitor VHRA-18AN1DC/INB Photo 50

Common Wearing Parts 2.4 Fan motor capacitor VHRA-18/48AN1DC/INB Photo VHRA-24AN1DC/INB Photo 51

Common Wearing Parts VHRA-36AN1DC/INB Photo 52

Comparison Table Part 5 Comparison Table 1. Wired Controller... 53 1.1 Function...53 1.2 Operating Instructions...54 1.3 Error Codes and Analysis...56 2.Pressure Refrigerant Loop Temperature Control Table... 57 2.1 R410 Table... 57 3. Sensors Resistance Table...58 3.1 Compressor Exhaust Temperature Sensor Resistance...58 3.2 Ambient/Indoor/Outdoor Pipe Sensor Resistance...59 53

Comparison Table 1. Wired Controller 1.1 Function FUNCTION SETTING COOLING COMPRESSOR STATUS HEATING LOCK OUTDOOR UNIT FAN MOTOR STATUS ELECTRIC HEATING ELEMENT STATUS WATER TANK TIMER ON CLOCK/TIMER/HOUR-MINUTES TIMER OFF TEMPERATURE/FUNCTIONAL DATA WATER TANK HEATING Centigrade/Fahrenheit 54

Comparison Table 1.2 Operating Instructions 1: OPERATION: When displayed on panel, you could press ON/OFF button to unlock. 1.1: MODE button: 1.1.1 Press this button could select Cooling mode or Heating mode; 1.2: ON/OFF button: Press to turn on or turn off the unit; If press till beep sound, to lock the wire controller, beep sound, to unlock the wire controller. if press again till 1.3: CLOCK button: 1.3.1Clock setting: Press CLOCK button till flashing, Minutes digit flashing, using UP DOWN button to set minute; press CLOCK button again, Hour digit flashing, using UP CLOCK button again or leave it for about 10 seconds, setting is saved automatically; DOWN button to set hour; after setting, press 1.3.2TIMER ON/OFF: System could be set for TIMER ON and TIMER OFF within 24hrs,setting unit by 1 minute. A. TIMER ON SETTING:When the system under OFF status,press CLOCK button into TIME ON,use UP DOWN button to choose time you want,and use CLOCK button to shift between Hour and Minute on the display.after setting press CLOCK button again or wait for 5 seconds for confirmation,time ON on the panel is on.if you want to cancel setting,just press ON/OFF button again. B. TIMER OFF SETTING:When the system under ON/Operation status,press CLOCK button,use UP DOWN button to choose time you want,and use CLOCK button to shift between Hour and Minute on the display.after setting press CLOCK button again or wait for 5 seconds for confirmation,time OFF on the panel is on.if you want to cancel setting,just press ON/OFF button again. 1.4: SET button : 1.4.1 Press to set up or modify system parameters,shift between P01 P12, then using UP DOWN button to set-up or change data; after setting,press SET button again for saving: Press UP DOWN buttons together till beep sound,the whole system be recovered to the factory default setting. 1.5: UP DOWN buttons 1.5.1Press UP DOWN buttons together till beep sound,the whole system be recovered to the factory default setting. 1.5.2Press UP DOWN buttons to select or adjust all kinds of data. 55

Comparison Table Code Setting mode Setting Data Range P01 Hot water temperature 68-140, Default:113 P02 Cold water temperature 41-95, Default:50 P03 P04 Water temperature difference for compressor start between water tank temp. & Hot water temp. 38 ~59, Default: 41 ON/OFF Mode or Constant Water Temperature(CWT) Mode 0: ON/OFF; 1: CWT; Default: 0 P05 P06 P07 P08 P09 P10 P11 P12 P13 Water temperature difference for compressor start under CWT Mode Delay time for Auxiliary Electric Heating Element starting under heating mode Auxiliary Electric Heating Element starting temperature Outdoor Ambient temperature for whole system shut-down Defrosting mode selection Defrosting starting by fan coil temperature (both for auto mode and manual mode) Defrosting cycle interval time (only for manual mode) Defrosting time (only for manual mode) Defrosting quit by fan coil temperature (both for auto mode and manual mode) 32 ~46, Default: 37 3-180min,Default:90min 68 ~131, Default: 122-22 ~30, Default:-22 0: auto mode; 1: manual setting mode 5 ~35, Default:24 25~70min,Default:40 min 2~20 min,default:8 min 47 ~68, Default:53 P14 Water Pump on-off selection 0: on mode; 1: off mode 56

Comparison Table 1.3 Error Codes and Analysis ERROR CODE ERROR CODE INDICATION E01 Eeprom error(idu PCB/Wire controller) E02 The wster tank temperature sensor failure E05 Outdoor unit condenser temperature sensor failure E06 Outdoor unit ambient temperature sensor failure E07 Outdoor unit gas discharge temperature sensor failure E08 E09 E10 Signal communication between wire controller and indoor unit main PCB failure Signal communication between ouidoor onit main PCB and inverter modular modular board failure Boot failure (compressor protection disconnect;compressor top high temperature protection) E11 Outdoor unit overcurrent failure(current protection of outdoor unit) E12 Inverter modular board failure E13 Discharge gas temperature or compressor temperature overheat protection E15 Over current or low current protection E21 Water tank temperature is too low to protect 57

Comparison Table 2.Pressure Refrigerant Loop Temperature Control Table 2.1 R410 Table R410A REFRIGERANT PRESSURE TEMPERATURE TABLE Temperature(C ) Absolute Temperature(C ) Absolute Temperature(C ) Absolute -65 0.052-22 0.375 21 1.47-64 0.054-21 0.391 22 1.52-63 0.057-20 0.404 23 1.56-62 0.061-19 0.424 24 1.6-61 0.064-18 0.435 25 1.64-60 0.068-17 0.453 26 1.68-59 0.072-16 0.468 27 1.73-58 0.076-15 0.483 28 1.78-57 0.08-14 0.504 29 1.82-56 0.084-13 0.52 30 1.88-55 0.089-12 0.538 31 1.91-54 0.093-11 0.556 32 1.96-53 0.098-10 0.579 33 2.03-52 0.103-9 0.598 34 2.08-51 0.108-8 0.618 35 2.13-50 0.113-7 0.639 36 2.18-49 0.119-6 0.66 37 2.24-48 0.125-5 0.682 38 2.29-47 0.131-4 0.705 39 2.35-46 0.138-3 0.728 40 2.41-45 0.144-2 0.752 41 2.46-44 0.151-1 0.777 42 2.51-43 0.157 0 0.803 43 2.58-42 0.165 1 0.823 44 2.65-41 0.172 2 0.851 45 2.71-40 0.181 3 0.879 46 2.77-39 0.188 4 0.903 47 2.84-38 0.196 5 0.937 48 2.91-37 0.206 6 0.962 49 2.98-36 0.215 7 0.994 50 3.05-35 0.224 8 1.02 51 3.1-34 0.235 9 1.05 52 3.18-33 0.243 10 1.09 53 3.25-32 0.255 11 1.11 54 3.32-31 0.264 12 1.15 55 3.4-30 0.275 13 1.18 56 3.48-29 0.286 14 1.22 57 3.54-28 0.298 15 1.25 58 3.63-27 0.311 16 1.28 59 3.72-26 0.324 17 1.32 60 3.78-25 0.334 18 1.35 61 3.9-24 0.348 19 1.4 62 3.97-23 0.363 20 1.44 Note: The conversion between absolute pressure and gauge pressure : the absolute pressure (MPa)-0.1MPa ( atmospheric pressure ) = gauge pressure (MPa). 58

Comparison Table 3. Sensors Resistance Table 3.1 Compressor Exhaust Temperature Sensor Resistance Unit: --KΩ (Compressor discharge temperature)55k t R(KΩ) AD t R(KΩ) AD t R(KΩ) AD t R(KΩ) AD -20 542.7 3 20 68.66 26 60 13.59 95 100 3.702 175-19 511.9 3 21 65.62 28 61 13.11 97 101 3.595 177-18 483 4 22 62.73 29 62 12.65 99 102 3.492 178-17 455.9 4 23 59.98 30 63 12.21 101 103 3.392 180-16 430.5 4 24 57.37 31 64 11.79 103 104 3.296 181-15 406.7 4 25 54.89 32 65 11.38 106 105 3.203 183-14 384.3 5 26 52.53 34 66 10.99 108 106 3.113 184-13 363.3 5 27 50.28 35 67 10.61 110 107 3.025 186-12 343.6 5 28 48.14 36 68 10.25 112 108 2.941 187-11 325.1 6 29 46.11 38 69 9.902 114 109 2.86 188-10 307.7 6 30 44.17 39 70 9.569 117 110 2.781 190-9 291.3 6 31 42.33 40 71 9.248 119 111 2.704 191-8 275.9 7 32 40.57 42 72 8.94 121 112 2.63 193-7 261.4 7 33 38.89 43 73 8.643 123 113 2.559 194-6 247.8 8 34 37.3 45 74 8.358 125 114 2.489 195-5 234.9 8 35 35.78 47 75 8.084 127 115 2.422 196-4 222.8 8 36 34.32 48 76 7.82 129 116 2.357 198-3 211.4 9 37 32.94 50 77 7.566 132 117 2.294 199-2 200.7 9 38 31.62 52 78 7.321 134 118 2.233 200-1 190.5 10 39 30.36 53 79 7.086 136 119 2.174 201 0 180.9 10 40 29.15 55 80 6.859 138 120 2.117 202 1 171.9 11 41 28 57 81 6.641 140 121 2.061 203 2 163.3 12 42 26.9 59 82 6.43 142 122 2.007 204 3 155.2 12 43 25.86 60 83 6.228 144 123 1.955 206 4 147.6 13 44 24.85 62 84 6.033 146 124 1.905 207 5 140.4 13 45 23.89 64 85 5.844 148 125 1.856 208 6 133.5 14 46 22.89 66 86 5.663 150 126 1.808 209 7 127.1 15 47 22.1 68 87 5.488 152 127 1.762 210 8 121 15 48 21.26 70 88 5.32 154 128 1.717 211 9 115.2 16 49 20.46 72 89 5.157 156 129 1.674 211 10 109.8 17 50 19.69 74 90 5 157 130 1.632 212 11 104.6 18 51 18.96 76 91 4.849 159 256 12 99.69 19 52 18.26 78 92 4.703 161 256 13 95.05 20 53 17.58 80 93 4.562 163 256 14 90.66 20 54 16.94 82 94 4.426 165 256 15 86.49 21 55 16.32 84 95 4.294 167 256 16 82.54 22 56 15.73 86 96 4.167 168 B(25/50)=3950K+- 256 17 78.79 23 57 15.16 88 97 4.045 170 3%R(90 )=5KΩ+- 256 18 75.24 24 58 14.62 90 98 3.927 172 3% 256 19 71.86 25 59 14.09 93 99 3.812 173 256 59

Comparison Table 3.2 Ambient/Indoor/Outdoor Pipe Sensor Resistance Unit: --KΩ(Ambient/Indoor/Outdoor Pipe Sensor Resistance)10K t R(KΩ) AD t R(KΩ) AD t R(KΩ) AD t R(KΩ) AD -30 204.168 18 4 28.364 91 38 5.633 188 72 1.519 232-29 192.180 19 5 26.896 95 39 5.400 190 73 1.466 233-28 180.887 20 6 25.513 98 40 5.179 192 74 1.416 234-27 170.253 21 7 24.210 101 41 4.967 194 75 1.367 234-26 160.245 23 8 22.982 104 42 4.766 196 76 1.321 235-25 150.830 24 9 21.824 107 43 4.573 198 77 1.276 236-24 141.974 25 10 20.731 111 44 4.390 200 78 1.233 236-23 133.648 27 11 19.700 114 45 4.215 201 79 1.191 237-22 125.822 28 12 18.727 117 46 4.048 203 80 1.151 237-21 118.467 30 13 17.808 120 47 3.888 205 81 1.113 238-20 111.557 31 14 16.940 123 48 3.736 206 82 1.076 238-19 105.065 33 15 16.120 127 49 3.590 208 83 1.041 239-18 98.967 35 16 15.345 130 50 3.451 209 84 1.007 239-17 93.241 37 17 14.612 133 51 3.318 211 85 0.974 240-16 87.863 39 18 13.920 136 52 3.191 212 86 0.942 240-15 82.812 41 19 13.264 139 53 3.069 213 87 0.912 241-14 78.069 43 20 12.644 142 54 2.952 215 88 0.883 241-13 73.616 45 21 12.056 145 55 2.841 216 89 0.855 242-12 69.433 47 22 11.500 148 56 2.734 217 90 0.828 242-11 65.505 50 23 10.973 151 57 2.632 218 91 0.802 242-10 61.816 52 24 10.474 154 58 2.534 220 92 0.777 243-9 58.351 54 25 10.000 156 59 2.440 221 93 0.753 243-8 55.096 57 26 9.551 159 60 2.350 222 94 0.730 243-7 52.038 59 27 9.125 162 61 2.264 223 95 0.708 244-6 49.165 62 28 8.721 165 62 2.181 224 96 0.686 244-5 46.465 65 29 8.337 167 63 2.102 225 97 0.666 244-4 43.927 68 30 7.972 170 64 2.026 226 98 0.646 245-3 41.541 70 31 7.626 172 65 1.953 227 99 0.627 245-2 39.297 73 32 7.297 175 66 1.883 228 100 0.609 245-1 37.187 76 33 6.984 177 67 1.816 229 101 0.591 245 0 35.202 79 34 6.686 179 68 1.752 229 102 0.574 246 1 33.334 82 35 6.403 182 69 1.690 230 103 0.558 246 2 31.577 85 36 6.134 184 70 1.631 231 104 0.542 246 3 29.922 88 37 5.877 186 71 1.574 232 105 0.527 246 60

Appendix Part 6 Appendix 1. Piping Diagrams... 61 1.1 Indoor Units...61 1.2 Outdoor Units...62 2. Wiring Diagrams...63 2.1 Indoor Units...63 2.2 Outdoor Units...64 61

Appendix 1. Piping Diagrams 1.1 Indoor Units REFRIGERANT FLOW COOLING HEATING 62

Appendix 1.2 Outdoor Units REFRIGERANT FLOW COOLING HEATING 63

Appendix 2. Wiring Diagrams 2.1 Indoor Units VRHA-18/24/36/48AN1DC/INB 64

Appendix 2.2 Outdoor Units VRHA-18AN1DC/INB 65

Appendix VRHA-24/36AN1DC/INB 66

Appendix VRHA-48AN1DC/INB 67