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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 CWH120/302
Summarization of Contents
Introduction to the Controls
Heater Controls
Overview of the heater's operational switches and their functions for user interaction.
The Graphical User Interface (GUI)
Explanation of the display layout, navigation bar, status bar, and work area.
Navigate and Set Using the Control Knob
Detailed instructions on using the control knob for navigation and setting values.
Display Symbol Meanings
Interpretation of symbols found on the navigation and status bars.
End User Operation
The Home Page
Details on information displayed on the heater's main operational screen.
Setting the Time and Date
Step-by-step guide for configuring the heater's internal clock.
Setting DHW Heating Time Program
Instructions for programming the Domestic Hot Water (DHW) heating schedule.
Setting DHW Temperature
Guide on how to adjust the desired Domestic Hot Water (DHW) temperature.
Setting DHW Operating Mode
How to switch the Domestic Hot Water (DHW) operating mode between On and Standby.
Temporary DHW Operation Function
How to activate a one-time heating cycle for Domestic Hot Water (DHW).
Information Pages
How to access and view various status and information screens.
Error Messages
Understanding error indications and lockout conditions on the heater.
Maintenance Messages
How to interpret and respond to maintenance alerts from the heater.
Error Codes
A comprehensive list of error codes, their descriptions, and diagnostic notes.
Regional Settings
Adjusting settings such as time, date, daylight saving, and language.
Commissioning Operation
Logging Onto Commissioning Mode
Procedure for accessing the commissioning level of the heater's controls.
Input / Output Test
Performing diagnostic tests on the heater's input and output signals.
Communication
Accessing communication protocols like the Local Process Bus (LPB).
Source
Displaying live operational status and sensor data from the heater.
Consumer
Viewing the operational status of external components connected to the heater.
Versions
Checking the software and text version numbers of the operator unit.
Complete Parameter List
Accessing the comprehensive list of all configurable parameters.
Commissioning Wizard
Utilizing a guided wizard for setting up heater parameters.
Engineer Operation
Logging Into Engineer Mode
Procedure for accessing the engineer level with a password.
Error History
Reviewing the recorded history of errors and maintenance events.
Error History - Burner Control Phase
Understanding burner control phases and their relation to error logging.
Complete Parameter List
Accessing and adjusting all available parameters at the engineer level.
Complete Parameter List Table
A detailed table listing all configurable parameters, their defaults, and notes.
Refresh Operator Unit
The process for updating the operator unit after parameter modifications.
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