andrews CWH120/300 - User Manual

Working towards
a c le ane r fu tu re
MAXXflo
In s ta lla tion g u id e , op e ra tion
a n d m a in te n a n c e m a n u a l
High Efficiency Condensing
S ta inless S teel S tora ge
W a ter Hea ters for
N a tu ra l G a s a nd P rop a ne
N a tu ra l G a s Mod e ls
CW H3 0 /1 0 0 , CW H3 0 /2 0 0 , CW H3 0 /3 0 0
CW H6 0 /2 0 0 , CW H6 0 /3 0 0
CW H9 0 /2 0 0 , CW H9 0 /3 0 0
CW H1 2 0 /2 0 0 , CW H1 2 0 /3 0 0
P rop a n e Mod e ls
L CW H3 0 /1 0 0 , L CW H3 0 /2 0 0 , L CW H3 0 /3 0 0
L CW H6 0 /2 0 0 , L CW H6 0 /3 0 0
L CW H9 0 /2 0 0 , L CW H9 0 /3 0 0
L CW H1 2 0 /2 0 0 , L CW H1 2 0 /3 0 0
This manual must be kept with the appliance J a n 2 0 0 9
P a rt N o. E2 8 1
MAXXflo_Manual_Dec08_QX2 12/1/09 1:13 pm Page 2

Summary

General and Safety Information

Health and Safety Regulations 1993

Manufacturer's duties and user safety precautions.

Technical Details

Model Specifications

Detailed technical specifications for MAXXflo models.

Heater Dimensions - CWH30;100

Diagrams and measurements for the CWH30/100 model.

Heater Dimensions - CWH30;200 & CWH60;200

Heater Dimensions - CWH90;200 & CWH120;200

Heater Dimensions - 300 Litre Models

Installation

Location Requirements

Typical Installation Diagrams

Gas Supply Requirements

Installation guidelines for Natural Gas and Propane supply.

Electrical Supply and Connection

Wiring Diagram

Detailed wiring diagram for the control system.

Flue Systems Overview

Flue Terminal Positioning Guidelines

Air Supply for Concentric Flue Systems

Air Supply for Conventional Flue Systems

Instructions for Commissioning

Temperature Setting and Temporary Changes

Commissioning Process and CO2 Adjustment

Initial checks, start-up, and CO2 measurement.

Control and Adjustment at Full Load

Measuring and setting CO2 at full load.

Control and Adjustment at Low Load

Measuring and setting CO2 at low load.

Decommissioning Procedure

Fault Codes

Fault Code Interpretation

Understanding fault codes and lockout/blocking faults.

Master Board Fault Codes

Blocking fault codes for the master control board.

Slave Board Fault Codes

Lockout and blocking fault codes for slave boards.

Maintenance

Annual Maintenance Checks

Key checks to perform annually for optimal performance.

andrews CWH120/300 Specifications

General

Brand	andrews
Model	CWH120/300
Category	Water Heater
Language	English