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

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The A.O. Smith central controller provides intelligent control on the entire hot water system. The
dimension of the central controller is 400X500X141mm (WXLXD). Please refer to picture 5.8 for the
layout of the central controller.
Picture 5.8 (to be updated with the new label)
The central controller should be installed in the area with ambient temperature from -10~50 Celsius
and it might not operate abnormally if the ambient temperature is out of this range. It could be
installed indoor or outdoor. If it is installed outdoor, please select the location where there is no direct
sunshine and rain. Please also consider the anti-freezing protection under low ambient temperature.
It’s recommended to install the central controller in the control room of the building.
(5) Power control cabinet requirement
To ensure the entire hot water system reliable operation, a power control cabinet is required to provide
power to all the heat pump units, central controller, circulation pump, auxiliary heater, auxiliary heater
pump, hot water return pump, etc. Please refer to table 5.8 for the power supply requirement of these
equipment.
Equipment Power Supply Requirement Remarks
Heat pump unit 380V/3N~/50Hz
Central controller 220V/~/50Hz
Circulation pump 220V/~/50Hz or 380V/3N~/50Hz Refer to the actual pump
specifications
Auxiliary heater (gas storage
heater)
220V/~/50Hz
Refer to the actual
heater specifications
Auxiliary heater (Electric) 380V/3N~/50Hz
Auxiliary heater pump 220V/~/50Hz or 380V/3N~/50Hz Refer to the actual pump
specifications
Hot water return pump 220V/~/50Hz or 380V/3N~/50Hz
Table 5.8 Power Supply Requirement of the Equipment in the Hot Water System
1.17. Series Number Setting
If there are multiple heat pump units are installed in one system and to be controlled by one central
controller. Please set the series number for each heat pump unit before the trial operation.
To set the series number, please open the heat pump unit control box to find the 4-digit dial switch
(please see picture 5.9) and do the setting as per table 5.9.
It’s recommended to paste a label of the series number on the control box door for easy distinguishes.
4-digit dial switch