Bosch 520-HN -L Manuals

Manuals and User Guides for Bosch 520-HN -L. We have 1 Bosch 520-HN -L manual available for free PDF download: Manual

Bosch 520-HN -L Manual (36 pages)

Brand: Bosch | Category: Boiler | Size: 2.88 MB

Table Of Contents2................................................................................................................................................................

Key To Symbols And Safety Instructions3................................................................................................................................................................

Key To Symbols3................................................................................................................................................................

General Safety Instructions3................................................................................................................................................................

Warning6................................................................................................................................................................

Appliance Details7................................................................................................................................................................

520 Hn Specifications (technical Data)7................................................................................................................................................................

Unpacking The 520 Hn Heater8................................................................................................................................................................

General Rules To Follow For Safe Operation8................................................................................................................................................................

Dimensions And Installation Clearances10................................................................................................................................................................

Installation Instructions11................................................................................................................................................................

Introduction11................................................................................................................................................................

Proper Location For Installing Your Heater11................................................................................................................................................................

Mounting Heater11................................................................................................................................................................

Combustion Air Requirements13................................................................................................................................................................

Venting13................................................................................................................................................................

1horizontal Venting14................................................................................................................................................................

2vertical Venting14................................................................................................................................................................

Gas Piping & Connections16................................................................................................................................................................

Measuring Gas Pressure20................................................................................................................................................................

Water Connections20................................................................................................................................................................

Recirculation Application21................................................................................................................................................................

Operation Instructions21................................................................................................................................................................

For Your Safety Read Before Operating21................................................................................................................................................................

Your Water Heater21................................................................................................................................................................

Lighting Instructions21................................................................................................................................................................

To Turn Off Appliance22................................................................................................................................................................

Adjusting The Water Temperature22................................................................................................................................................................

Power Adjustment Knob23................................................................................................................................................................

Draining The Appliance23................................................................................................................................................................

Maintenance And Service24................................................................................................................................................................

Maintenance Intervals24................................................................................................................................................................

Water Valve24................................................................................................................................................................

Pilot25................................................................................................................................................................

Main Burners25................................................................................................................................................................

Vent Assembly / Heat Exchanger25................................................................................................................................................................

Mineral Scale Build-up25................................................................................................................................................................

1descaling Heat Exchanger25................................................................................................................................................................

Troubleshooting26................................................................................................................................................................

No Spark At Pilot With Water Flow26................................................................................................................................................................

Spark Appears When Hot Water Is Turned On, But Pilot And Burners Will Not Ignite26................................................................................................................................................................

Pilot Lights, But Burners Will Not Come On27................................................................................................................................................................

Main Burners Go Out During Hot Water Use28................................................................................................................................................................

Hot Water Temperature Fluctuates At Tap28................................................................................................................................................................

Water Is Too Hot29................................................................................................................................................................

Water Is Not Hot Enough29................................................................................................................................................................

Burners Ignite Without Hot Water Flow29................................................................................................................................................................

7.10 Low Hot Water Pressure29................................................................................................................................................................

7.11 Noise When Heater Is Running30................................................................................................................................................................

Burners Do Not Operate Cleanly; Yellow Flames When Operating30................................................................................................................................................................

Protecting The Environment30................................................................................................................................................................

Interior Components And Diagram Parts List31................................................................................................................................................................

Interior Components31................................................................................................................................................................

Components Diagram32................................................................................................................................................................

Parts List33................................................................................................................................................................

Lifetime Limited Warranty For Bosch Tankless Water Heaters34................................................................................................................................................................

Installation35................................................................................................................................................................