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CONTROLS OPERATING INSTRUCTION MANUAL
MAXXfl o EVO
High effi ciency condensing stainless steel storage water heater
CWH 30/201, CWH 30/301, CWH 60/201, CWH 60/301
CWH 90/302, CWH120/302
Please read and understand these instructions before commencing installation and leave this manual with the customer for future reference.
Andrews. Built to perform.
M8673
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Table of Contents
Related Manuals for andrews CWH 90/302
Summarization of Contents
Introduction to Controls
Heater Controls
Identifies the physical controls on the heater unit, including operation and reset switches.
The Graphical User Interface (GUI)
Explains the display screen layout, navigation bar, status bar, and work area.
Navigate and Set Using the Control Knob
Details how to use the control knob for navigation, selection, and value setting within the GUI.
Display Symbol Meanings
Defines the icons used in the navigation bar and status bar for system status and functions.
End User Operation
The Home Page
Describes the information displayed on the heater's main operational status screen.
Setting the Time and Date
Guides users through the process of setting the current time and date on the unit.
Setting DHW Heating Time Program
Explains how to configure the daily operating schedule for domestic hot water heating.
Setting DHW Temperature
Details how to adjust the desired domestic hot water set point temperature.
Setting DHW Operating Mode
Describes how to switch the DHW operation between ON and STANDBY modes using the operation switch.
Temporary DHW Operation Function
Explains how to manually activate a single DHW heating cycle outside the programmed times.
Information Pages
Guides users on how to view different information screens showing heater operational status.
Error Messages
Explains how the heater indicates errors and lockout conditions, and how to reset them.
Maintenance Messages
Describes maintenance alerts and the symbol indicating a required service inspection.
Error Codes
Provides a comprehensive list of error codes, their descriptions, diagnostic codes, and notes.
Regional Settings
Covers adjustments for time, date, daylight saving, and display language settings.
Commissioning Operation
Logging Onto Commissioning Mode
Details the procedure for accessing the Commissioning Engineer level of operation.
Input/Output Test
Explains how to perform tests on the heater's inputs and outputs to confirm functionality.
Communication
Describes access to the Local Process Bus and communication with the heater.
Source
Provides information on the live operational status of the heater and its internal sensors.
Consumer
Displays operational status of external items connected to the water heater.
Versions
Shows the software and text versions currently used by the heater's GUI.
Complete Parameter List
Guides users to the full list of configurable parameters available for the commissioning engineer.
Commissioning Wizard
Explains the use of the wizard for setting up heater parameters during the commissioning process.
Engineer Operation
Logging Into Engineer Mode
Details the procedure for accessing the Engineer level of operation, including password entry.
Error History
Explains how to view the last 20 recorded errors or maintenance messages with diagnostic details.
Error History - Burner Control Phase
Provides a detailed explanation of the different burner control phases and their associated error codes.
Complete Parameter List
Introduces the complete parameter list accessible at the Engineer level for viewing and adjustment.
Complete Parameter List Table
Lists all configurable parameters, their default values, and notes for engineer-level settings.
Refresh Operator Unit
Explains the 'Update operator unit' function and the timing for configuration changes to take effect.
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