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1 Important Safety Information

Please read all of the instructions thoroughly before the installation and operation of the water

heater. Please keep this manual for future reference.

Under no circumstance will A.O.SMITH Company be held liable for any damage that

caused by failure to comply with the installation and operation instructions outlined in this

manual. Only qualified persons authorized by the manufacturer can perform the

installation, the service and the maintenance of the water heater.

Keep necessary space for water heater installation. Failure to comply with the

requirements of installation can affect the performance of the water heater.

Please perform inspection and necessary maintenance regularly after the installation and

operation of the water heater. If you find the water heater operateing abnormally, stop the

operation of the unit immediately, and call service phone to service the unit at once to

ensure the normal, safe and reliable operation of the water heater.

Do not insert fingers or other stuff into the fan guard to avoid hurt or damage. Do not

touch the fan motor surface to avoid high temperature hurt.

Please inspect and replace the anode regularly because it is a consumable part. It is

recommended that the replacement change interval be 2 to 3 years. You can call service

phone to reserve buying and replacing a new anode, which will extend the life of the

water heater.

The water heater has the risk of causing severe scalds. Please mix hot water with cold

water before bathing or showering.

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 should be fully

filled with water. If it is subjected to dry fire, please disconnect the power supply, shut off

the water supply and stop the operation of the unit immediately, and call service phone to

contact a qualified person to inspect and service the unit.

If any component of the water heater has been immersed in water, it should be inspected

or serviced by a qualified person before being employed.

For the water heater provided with a power cord, the power cord replacement should be

performed by a service department or a person qualified by the manufacturer if it is

damaged. Electrical insulation and thermal insulation have been provided for the

important components of the water heater.

The water heater is provided with a temperature and pressure relief valve, whose

installation location should not be changed privately and whose outlet should not be

blocked for the security of utilization. The temperature and pressure relief valve should

be connected to an adequate discharge line, which is continuously downward without

any knot, and the discharge line should be terminated at a floor drain directly.

The outlet water (including the hot water with high temperature) of the water heater

should not be provided as potable water.

The water heater should be connected to a separate branch circuit. Please check the

electricity meter, the circuit breaker and the wire size to make sure that they comply with

the rated current of the water heater. Call a qualified electrician to check them in case of

Содержание CAHP-120 Series

Страница 1: ...R...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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

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

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

Страница 46: ...R...

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