Viessmann Burner Gaskets Installation Instructions

Important Information

This document provides installation instructions for burner gaskets used in various Viessmann boilers. It is intended exclusively for use by licensed professional heating contractors. Improper installation can lead to flue gas leakage and severe personal injury or property damage.

Safety and Installation Requirements

Before starting any service work, ensure the following safety measures are taken:

• Ensure the main power to the equipment being serviced is off.
• Ensure the main fuel supply valve to the boiler is closed.
• Take precautions to avoid accidental activation of power or fuel during service work.
• Do not perform service work on any component part without ensuring safe operation of the heating system.
• Use only original Viessmann or Viessmann-approved replacement parts.

Installation of Gaskets

When installing burner gaskets, ensure correct orientation. Improperly installed gaskets can lead to flue gas leakage. Always use a torque wrench to tighten components to the specific torque values provided in the tables below.

Gasket Specifications

The following table lists the part numbers and required torque specifications for burner gaskets:

• 7817185: 40 lb.in (4.5 Nm)
• 7817692: 40 lb.in (4.5 Nm)
• 7818117: 35 lb.in (4.0 Nm)
• 7835164: 31 lb.in (3.5 Nm)
• 7836177: 31 lb.in (3.5 Nm)
• 7836178: 40 lb.in (4.5 Nm)
• 7869894: 40 lb.in (4.5 Nm)