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FOGATTI Manuals
Water Heater
FDG420IN
Manual
FOGATTI FDG420IN Manual
Tankless gas hot water heater
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Installation Manual
Specification
Introduction
Safety Guide
Security Definition
General
Installation Instructions
General
Installation Space
Installation Warning
Typical Installation
Exhaust Pipe Specifications
Venting Instructions
General
Vent Termination Clearances
Combustion Air Supply
General
Gas Connection
Water Connection
Pressure Reducing Valve
Maintenance
Electrical Connections
Initial Test Run
Owner'sguide
Operational Safety
Operational Instructions
Built-In Controller
Controller Thermometer
Troubleshooting
Maintenance
Antifreeze System
Gas Pressure Test Position
Component Diagram
Wiring Diagram
Packing List
Warranty Notice
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Installation Manual
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Specification
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Exhaust Pipe Specifications
4
Venting Instructions
5
Troubleshooting
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TANKLESS GAS HOT WATER HEATER
MODEL
FEATURING
• ENDLESS HOT WATER
FDG370IN
• ON-DEMAND USAGE
FDG420IN
• COMPACT, SPACE SAVING
• ENERGY CONSERVATION
• COMPUTERIZED SAFETY
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Summarization of Contents
Specification
Introduction
Safety Guide
Safety Definition and Hazard Levels
Explains hazard indicators (DANGER, WARNING, CAUTION, NOTICE) for user safety.
General Installation Safety Rules
Outlines general safety precautions for installing the water heater.
Installation Instructions
General Installation Guidelines
Provides overall instructions and requirements for installing the unit.
Installation Space Requirements
Specifies minimum clearances around the water heater for safe operation.
Installation Warnings and Restrictions
Covers critical safety warnings and prohibited installation locations.
Typical Installation Procedure
Details the step-by-step process for typical water heater installation.
Exhaust Pipe Specifications
Outlines the requirements and specifications for the exhaust vent pipe.
Venting Instructions and Clearances
Provides guidelines for proper ventilation and vent termination clearances.
Combustion Air Supply
Gas And Gas Pipe Specifications
Gas Connection
Water Connection
Pressure Reducing Valve
Maintenance of Pressure Reducing Valve
Details the procedures for checking and maintaining the pressure reducing valve.
Electrical Connections
Initial Test Run
Operational Safety
Operating Instructions
Step-by-step guide for safe operation of the water heater.
Turn Off Gas to Appliance Procedure
Describes the correct procedure for safely shutting off the gas supply.
Operation Instructions
Built-in Controller Operation
Explains how to use the unit's built-in controller for settings.
Controller Thermometer and Settings
Details temperature settings and readings displayed on the controller.
Using the Mixing Valve
Instructions on how to properly mix hot and cold water for desired temperature.
Troubleshooting
Error Codes and Fault Handling
Lists common error codes and their corresponding causes and solutions.
Non-Malfunctions Identification
Phenomena That Are Not Malfunctions
Identifies normal operational behaviors that may be mistaken for faults.
Maintenance Procedures
Antifreeze System
Gas Pressure Test Position
Component Diagram and Parts
Packing List
Warranty Notice
Table of Contents
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