A.O. Smith CAHP-MC-38, Инструкции по установке, эксплуатации и обслуживанию

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4 - Features and Functions
1.1. Heating Capacity
Heat pump water heaters remove heat from surrounding air and use that heat to heat water. So the
heating capacity is closely linked with the ambient, inlet water, outlet water temperatures. The heating
capacity will decrease if the ambient temperature becoming lower. The variation of the inlet water
temperature and the water temperature setting will also have influence on the heat pump heating
capacity.
1.2. Power off memory
The central controller stores the status of the units automatically when the heat pump units or the
central controller is powered off. The central controller will send the command to the system to
operate as the status before the power off when the power supply recovers. This will allow the system
operate as per the previous setting during abnormal power off.
1.3. Auxiliary heaters
The heat pump heating capacity will decrease when the ambient temperature decreases. Auxiliary
heaters should be equipped to improve the heating capacity and ensure the hot water supply if the
minimum ambient temperature is lower than 10 Celsius. Either electric heater or gas heater could be
used as auxiliary heater.
The central controller supplied by A.O. Smith provides control signal to the auxiliary heater to optimize
the system operation efficiency. For example, if a gas heater is selected as auxiliary heater, the central
controller will control the heat pump units and the gas storage heater based on the actual ambient
temperature, water temperature and the database stored in the CCB to achieve the most economic
operation cost, as well as the most reliable operation.
Please read the installation and operation manual of the gas storage heaters if an A.O. Smith gas
storage gas heater is selected as auxiliary heater.