Viessmann Vitodens 200-W System Mode d’emploi

Vitodens 200-W & Vitodens 222-F

Heat Exchanger Replacement Instructions

5834 998 - 03 01/2019

For use by heating contractor

For use with: Vitodens 200-W, B2HB 19, 26, 35

Vitodens 222-F, B2TB 19, 35

Vitodens 222-FVitodens 200-W

5834 998 - 03

Ensure that main power to the equipment being serviced is off.

Ensure that 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. When replacing parts, use

original Viessmann or Viessmann approved replacement parts.

Safety and Installation Requirements

Please ensure that these instructions are read and understood before

starting any service work. Failure to comply with these instructions

may cause product/property damage, severe personal injury and/or

loss of life.

Working on the equipment

The installation, adjustment, service and maintenance of this product

must be performed by a licensed professional heating contractor

who is qualified and experienced in the installation, service, and

maintenance of hot water boilers. There are no user serviceable parts

on the boiler, burner or control.

Heat Exchanger Replacement

For more details refer to the Installation and Service

Instructions applicable to this boiler.

Installation Instructions

for use by heating contractor

HViessmann Vitodens Service Tool (PN 9537070)

HAdjustable Wrench (10”)

HSide Cutters

HNeedle Nose Pliers or Linesman Pliers

HFlat Head Screw Driver

HUtility Knife

Cleaning supplies

HRags

Special items

HApproved leak detection fluid for natural gas and liquid propane gas

HFlue Gas Analyzer

Necessary Tools

5834 998 - 03

Removing the Front Covers (B2HB 19, 26 and 35)

For more details refer to the Service

Instructions applicable to this boiler.

Removing the Front Covers (B2TB 19 and 35)

Removing the front panels

1. Remove the front upper panel.

2. Tilt the lower front panel.

3. Loosen the retaining screw.

4. Remove the lower front panel.

5. Slide both sides of the programming unit cover closed.

6. Release the hinged hooks located on both sides of the control unit.

7. To open hinged cover, lift cover and then fold down the control

unit.

8. Remove boiler inner cover.

Removing the front panels

1. Remove the external accessories connection box cover.

2. Loosen the screws at the bottom of the boiler as shown

(do not remove completely).

3. Slide out and remove front enclosure panel.

4. Slide both sides of the programming unit cover closed.

5. Release the hinged hooks located on both sides of the control unit.

6. To open hinged cover, lift cover and then fold down the control

unit.

For more details refer to the Service

Instructions applicable to this boiler.

Prior to removing any panels ensure that gas and power is shut off.

IMPORTANT

Prior to removing any panels ensure that gas and power is shut off.

IMPORTANT

5834 998 - 03

Note: For Vitodens 200-W, B2HB and Vitodens 222-F, B2TB,

Drain water from the heat exchanger through the sediment faucet drain valve. For Vitodens 222-F, B2TB

the sediment faucet is located down stream of the boiler pump.

Discontent the wiring from the burner, heat exchanger and fan as indicated below:

Legend

APlug #15 (flue gas temp sensor)

BPlug #47 & spade terminal (fixed high limit)

C Plug #3 has 2x connections (boiler supply temp sensor)

DPlug for ionization electrode

EPlug for spade terminal ground wire

FWhite Plug (without identifying number)

GPlug #54 (ignition transformer)

HPlug #35 (gas valve)

IPlug #190 (gas valve modulation coil)

JPlug #100 (radial fan motor)

KPlug #100A (radial fan motor control)

LWhite Plugs (ignition electrode wires from transformer)

5834 998 - 03

Note: For Vitodens 200-W, B2HB and Vitodens 222-F, B2TB,

Disconnect the venting system.

5834 998 - 03 6

Note: For Vitodens 200-W, B2HB and Vitodens 222-F, B2TB,

Using the T-20 Torx bit or 7 mm nut driver, remove the 4x nuts 1 which secure the vent pipe adaptor 2

to the boiler cabinet. Carefully remove the vent pipe adaptor 2.

Using the T-20 Torx bit, remove the 2x screws (or nuts) holding the flue gas channel 3to the boiler cabinet.

5834 998 - 03 7

Note: For Vitodens 200-W, B2HB and Vitodens 222-F, B2TB,

For units found with additional sealing ring (adaptor piece);

remove and dispose of them (this rework kit resolves this design).

Dispose of this

adaptor piece

5834 998 - 03 8

Note: For Vitodens 200-W, B2HB and Vitodens 222-F, B2TB,

Disconnect from plug #15 and carefully remove the flue gas sensor from the flue gas channel.

(Do not use tools to pull out the sensor as it could damage it)

5834 998 - 03

Note: For Vitodens 200-W, B2HB and Vitodens 222-F, B2TB,

Using an adjustable wrench, disconnect the gas supply pipe from the gas valve.

Remove and discard the old green gas valve gasket.

5834 998 - 03

Note: For Vitodens 200-W, B2HB and Vitodens 222-F, B2TB,

Using the T-30 Torx bit, loosen and remove the 4x bolts from the burner door assembly.

Carefully remove burner door assembly and store in a safe place.

CAUTION

To avoid damage to the burner, do not lay burner on its cylindrical

burner tube or touch the burner tube mesh.

Failure to heed this caution may cause damage to the burner tube,

which may lead to improper operation.

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