A.O. Smith CAHP-120 Series User Manual Download Page 1

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Summary of Contents for CAHP-120 Series

Page 1: ...R...

Page 2: ...fety Information 2 2 Physical and Technical Specifications 4 3 Installation Instructions 10 4 Electrical Connection Instructions 14 5 Operation Instructions 22 6 Maintenance Instructions 35 7 Trouble...

Page 3: ...ter before bathing or showering z If the water heater is subjected to dry fire it will produce steam or hot water with high temperature which is in risk of causing severe scalds The water heater shoul...

Page 4: ...turer or seller of the water heater will not be liable for any damage caused by unauthorized installation These damages include but not limited to leakage of coils dropping of the unit the abnormal op...

Page 5: ...m Relief Valve Angle Maximum Width H mm 1670 610 901 503 1457 1427 135 22 686 Table 2 2 Technical Specifications Model Number CAHP 80 6 CAHP 80 8 CAHP 80 10 CAHP 80 12 Model Type Outdoor Integrated He...

Page 6: ...50Hz L h 75 75 75 75 230V 1N 50Hz L h 75 75 75 75 Hot Water Delivering Rate High Demand 380V 3N 60Hz L h 218 153 5 261 175 304 196 5 347 218 220V 1N 60Hz L h 218 153 5 261 175 304 196 5 347 218 400V 3...

Page 7: ...ical Dimensions Total Height A mm Tank Diameter B mm Maximum Depth C mm Service Panel Width D mm Relief Valve and Water Outlet Height E mm Drain Valve and Water Inlet Height G mm Relief Valve Angle Ma...

Page 8: ...g 1000 60Hz g 1100 Electrical Heating Capacity kW 6 3 8 4 10 5 12 6 Tank Capacity L 455 Hot Water Delivering Rate Efficiency 380V 3N 60Hz L h 89 89 89 89 220V 1N 60Hz L h 89 89 89 89 400V 3N 50Hz L h...

Page 9: ...eration mode 3 Sound Pressure Level 1m 2 3 CAHP 120C Physical and Technical Specifications Figure 2 5 Figure 2 6 Table 2 5 Physical Dimensions Total Height A mm Tank Diameter B mm Maximum Depth C mm S...

Page 10: ...Noise 3 dB A 59 Air Outlet Noise 3 dB A 62 Dimensions L W H mm 1002 770 1770 Net Weight kg 264 Operation Weight kg 694 Anode Aluminum Rod Control Mode LCD Wire Display Standard 10m Optional Maximum 3...

Page 11: ...ound would have no influence on you and your neighbors CAUTION Put the water heater aside for at least 30 minutes after the unit is located and then connect it to the power supply CAUTION The water he...

Page 12: ...ON In order to reduce the operation cost the hot water outlet pipes should be properly insulated If the water heater is subjected to freezing temperature that is less than 0 the cold water inlet pipes...

Page 13: ...mum water pressure listed on the nameplate Install a mixing valve to mix the hot water delivered by the water heater to avoid possible hurt caused by high water temperature It s recommended to insulat...

Page 14: ...high water temperature water pump Grundfos Pumper UP15 14BT which has nominal water flow rate 0 3 cubic meters and lift 1m If other pump is used adjust the pump according to actual condition for prop...

Page 15: ...nsure the touch would not result in electric shock touchable double insulation cable could be used or add insulation to normal power cord 4 2Power Cord Connection 1 Select power cord for CAHP80 120 un...

Page 16: ...Cable Size mm 2 Plastic Insulation and Conduit Air Breaker Capacity A Current Leakage Protection Two Elements Working Mode One Element Working Mode Two Elements One Element Phase Wire Neutral Wire Gro...

Page 17: ...2 3 Run the main power cord through the cable connector with reference to figure 4 3 Figure 4 1 Figure 4 2 Figure 4 5 Cable Connector of Circulating Pump Cable Connector of Display Box Power Cord Con...

Page 18: ...ng Wire WARNING An air breaker and an appropriate current leakage protector must be installed outside the water heater as the requirement of power supply specification table for your security The wate...

Page 19: ...Protect the display box during installation process and keep it away from dust Do not touch electrical parts Otherwise the display box would be damaged z The display box is connected in low voltage c...

Page 20: ...13 Install the communication cable on the terminal block on the right of display board keep the label of wire corresponding to letters in terminal block as illustrated in figure 4 14 Keep the display...

Page 21: ...cover on the wall 4 Communication Cable Installation of Water Heater Keep the main control board accessible as illustrated in figure 4 18 before connecting the communication cable to the water heater...

Page 22: ...21 one connector in the main control board There are two connectors applicable for display board and select one for connection...

Page 23: ...clockwise to shut off the drain valve of the water heater 3 Open the nearest hot water faucet and purge the air from the system 4 Open cold water inlet valve fully and fill the water tank and pipes w...

Page 24: ...tton of OFF on the homepage to turn off the water heater The buttons will be locked automatically if there is no operation within three minutes When the water heater is connected to the power supply t...

Page 25: ...conservation In high demand mode the water will be heated as quickly as possible The factory default mode is efficiency Press the button of or to select the operation mode Press the button of OK to c...

Page 26: ...tting is the same as on time setting Figure 5 6 Press the button of or to select the sub menu of status below TIMER 1 on the sub menu interface of timer setting and press the button of MODIFY to chang...

Page 27: ...gure 5 10 Press the button of SET to enter the timer setting interface illustrated in figure 5 11 There are two options in sub menu interface of timer start and stop Press the button of or to select t...

Page 28: ...he button of SET to change pipe outside diameter value Press the button of or to select proper pipe outside diameter value and the button of OK to confirm the selection Other four sub menus could be o...

Page 29: ...n must be performed by a qualified person authorized by the manufacturer or the supplier For CAHP80 120 units perform as the following instructions Press the button of or to select the sub menu of SER...

Page 30: ...spect the software versions and check codes of main control board and display board illustrated in figure 5 24 Comparing with the released check codes can confirm if the software is disturbed or if it...

Page 31: ...lustrated in figure 5 29 if necessary Press the button of EXIT to return to the last menu interface Figure 5 28 Figure 5 29 Press the button of or to select the sub menu of FIN TEST 1 on the maintenan...

Page 32: ...e following instructions Press the button of or to select the sub menu of SERVICE on the main menu interface and then press the button of SET to enter the maintenance menu Press the button of or to se...

Page 33: ...120C unit can record ten faults as illustrated in figure 5 38 and figure 5 39 Figure 5 37 Figure 5 38 Figure 5 39 Press the button of or to select the sub menu of SW VER on the maintenance menu as ill...

Page 34: ...f or to select each number and the button of OK to confirm the number Figure 5 42 Figure 5 43 If the password is wrong it will show WRONG as illustrated in figure 5 44 Press the button of OK to input...

Page 35: ...IN TEST 2 and SET FREQ are the same with CAHP80 120 units Press the button of or to select the sub menu of CLR FAULTS on the maintenance menu as illustrated in figure 5 47 Press the button of OK to cl...

Page 36: ...the material or change the new one When the anode diameter is less than 1 cm change it for a new one Higher water temperature and softer water can accelerate the consumption of the anode so the anode...

Page 37: ...emoved to inspect regularly If there is scale remove all the heating elements for cleaning If there is precipitation on the bottom of the tank clean it The method of cleaning the lime scale is immersi...

Page 38: ...elements and determine the normal operation of the heating elements Install the covers of the heating elements and the service panels ADVICE When the hot water is too much it is recommended adjusting...

Page 39: ...he water heater 1 When there is precipitation or lime scale on the surface of the heating elements a hissing sound would occur during the operation of the water heater The noise is normal but the scal...

Page 40: ...service phone LOW PRESSURE Compressor is protected for low pressure If it cannot recover within one hour call the service phone HIGH DIS TEMP Compressor is protected for high discharge temperature If...

Page 41: ...ERR Lower tank temperature AD channel is error Call the service phone COIL SHORT Coil temperature sensor is short Call the service phone COIL OPEN Coil temperature sensor is open Call the service phon...

Page 42: ...41 8 APPENDIX 8 1 CAHP 80I 120I Wiring Diagram...

Page 43: ...42 8 2 CAHP 80T 120T Wiring Diagram...

Page 44: ...43 8 3 CAHP120C 3KW Wiring Diagram...

Page 45: ...44 8 4 CAHP120C 4KW 5KW 6KW Wiring Diagram...

Page 46: ...R...

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A.O. Smith CAHP-120 Series, User Manual

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