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Covers fire/explosion risks, gas leak response, and general precautions.
Emphasizes that installation and service must be performed by qualified personnel.
Details safe operating practices, hot water scald risks, and electrical safety.
Outlines maintenance requirements and manufacturer liability for improper installation.
Covers national and local codes for boiler installation.
Specific state requirements including CO detectors and signage.
Explains warning, caution, and notice symbols for understanding the manual.
Details the meaning of the model number designation (VSL-160-B/C).
Illustrates the hydraulic system for both 160-B and 160-C models.
Explains the boiler's purpose, functions, and efficiency optimization.
General guidelines, warnings, and cautions for selecting the boiler's location.
Details minimum clearances and safe procedures for transporting the boiler.
Step-by-step instructions for securely mounting the boiler using the wall bracket.
Provides necessary dimensions and clearance information for installation.
Introduces water connections and lists supplied fittings.
Detailed instructions and cautions for connecting water supply and return lines.
Requirements for expansion tanks, heating pumps, and system sizing.
Instructions for connecting to an indirect water heater for DHW production.
Procedures for connecting and managing the condensate disposal system.
General safety warnings and requirements for electrical installation.
Instructions for connecting power, pumps, thermostats, and outdoor sensors.
Procedures for linking the boiler to an indirect water heater for DHW.
Steps to open the instrument panel and configure settings.
Guidelines on venting safety, air quality, piping, and length limitations.
Lists approved materials and components for PVC/CPVC, stainless steel, and polypropylene vent systems.
Procedures for single pipe venting and sidewall terminations for two-pipe and concentric systems.
Instructions for vertical terminations and multi-boiler venting configurations.
Instructions for gas piping, sizing, pressure checks, and safety.
Procedures for converting fuel types and operating at high altitudes.
Steps for initial boiler startup, filling the condensate trap and heating system.
Verifying gas supply, performing combustion analysis, and adjusting CO2 levels.
Setting heating capacity, DHW flow, and understanding cold start mode.
Overview of the control panel and how to check heating system pressure.
Instructions for Summer/Winter modes and adjusting water temperatures.
Configuring heating system types and optimizing efficiency with outdoor reset.
Explains boiler switch functions and protective actions like freeze protection.
Details operational delays, alarms, lock-outs, error codes, and diagnostic procedures.
Outlines maintenance schedules, safety precautions, and routine inspections.
Procedures for removing the boiler casing and cleaning internal components.
Checks for ignition, flame detection, sensors, condensate trap, and valve removal.
Steps for draining the boiler and verifying sensor resistance.
Explains functional and multiwire wiring diagrams for diagnostics.
Guide on using the flow chart to navigate menus and adjust parameters.
General