Important Safety Information - A.O. Smith CAHP-MC-38 Installation, Operation And Maintenance Instructions

Thank you for using A.O.Smith heat pump water heater. Please read all of the instructions
thoroughly before the installation and operation of the water heater. Please keep this manual for
future reference.
Heat pump water heater is different from the common water heaters. Only qualified persons
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authorized by the manufacturer can perform the installation, service and maintenance of the
water heater.
Keep the necessary space for water heater installation. Failure to comply with the
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requirements of installation can affect the performance of the water heater.
The piping and wiring connections should comply with the requirements of the instruction
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manual.
Every heat pump unit is installed with one air breaker, which could be used to cut off the
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power supply during the maintenance. One leakage protector is requested to be installed
between the junction box and the heat pump.
Please perform through inspection on the whole system before power on the system.
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Please consider lightning stroke when select the location for the heat pump units and the tank.
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Necessary protection solution is requested to protect the system from suffering lightning
stroke.
Please operate the heat pump units based on the instructions illustrated in this manual.
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Do not insert fingers or other stuff into the fan guard to avoid hurt or damage. Do not touch
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the fan motor surface to avoid high temperature hurt.
Please perform inspection and necessary maintenance regularly after the installation and
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operation of the water heater. If you find the water heater operate abnormally, stop the
operation of the entire system immediately, and call service phone to service the units
immediately to ensure the normal, safe and reliable operation of the water heaters. Please do
not try to fix the issues by yourselves.
If the heat pump water heaters are not be operated in the winter time, please supply power
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to all the units all the time to let the unit operate the anti-freezing function automatically. If
the heat pumps water heaters will not be operated for a long time, please drain the water
from the system by opening the drain valve to avoid freezing.
Please insulate all the external piping properly if the system is installed in circumstance which
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has the minimum ambient temperature lower than 0 Celsius.
In order to reduce the operation cost, the hot water outlet and return lines should be properly
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insulated.
Disconnect the power supply before performing any maintenance or service. Only qualified
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persons authorized by the manufacturer can perform the maintenance and service.

1 - Important Safety Information