Disassemble Burner And Check Burner Gasket; Visually Check The Exterior Of The Burner Mesh Assembly; Replace Burner Mesh Assembly - Viessmann VITODENS 200 Start-Up/Service Instructions

Start-up and Service

Disassemble Burner and Check Burner Gasket

Visually Check the Exterior of the Burner Mesh Assembly

Replace Burner Mesh Assembly

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1. Remove burner cover panel (if still installed) as per
the removal and reinstallation instructions on page
6 in this manual, and reinstall panel upon completion
of service work.
2. Switch off the heating system switch on the control
unit and the power supply.
3. Close gas shutoff valve and secure.
4. Disconnect electrical cables from fan motor A,
differential air pressure sensor B, combination gas
valve C, ionization electrode D, ignition transformer
E and grounding F.
5. Remove two screws G to disconnect gas line from
gas valve.
6. Loosen six hexagon socket head cap screws H and
remove burner.
7. Check burner gaskets for damage (see Parts List) and
replace if required.
CAUTION
Do not lay burner on burner mesh assembly (wire mesh)!
To check the exterior of the burner mesh assembly for
physical damages, such as dents, corrosion and/or
abnormally large holes:
1. Remove burner cover panel, if still installed (see
page 6). Reinstall panel upon completion of service
work.
IMPORTANT
Do not replace gasket D when visually inspecting the
exterior of the mesh assembly.
(if wire mesh is damaged)
1. Remove electrodes A.
2. Turn thermal insulation ring B clockwise and remove.
3. Unsrew the eight Torx screws and remove burner
mesh assembly and assembly gasket .
4. Remove existing burner mesh assembly gasket E.
5. Fit new burner mesh assembly with the new gasket
and tighten with the eight Torx screws.
Tighten to a torque of 3.3 lb.ft. / 4.5 Nm.
Vitodens 200 WB2 Service