VIESSMANN Vitodens 200-W WB2B Gas Valve Installation Guide

: June 13, 2024
: VIESSMANN

Table of Contents

VIESSMANN Vitodens 200-W WB2B Gas Valve
Product Information
Installation Instructions for use by heating contractor
Safety and Installation Requirements
Read User Manual Online (PDF format)
Download This Manual (PDF format)

VIESSMANN Vitodens 200-W WB2B Gas Valve

Product Information

The Gas Valve for Vito dens 200-W, WB2B is a crucial component of the hot water boiler system. It is designed to regulate the flow of gas into the burner assembly, ensuring safe and efficient operation of the heating system. This gas valve is manufactured by Viessmann, a reputable company known for producing high-quality heating equipment.

Installation Instructions for use by heating contractor

Gas Valve
for Vitodens 200-W, WB2B
Part Number: 7836324

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.

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.

Refer to the Installation and Start-up/Service Instructions applicable to this boiler.

Accessing the Burner Assembly

With the electrical power and fuel supply off, open the control cover and switch the ON/OFF “8“ boiler control switch to OFF.
Remove the front enclosure panel.

For more details refer to the Installation and Start-up/Service Instructions applicable to this boiler.

Vitodens 200-W, WB2B 19, 26, 35

Legend

Tightening torque of fasteners:

C 22 lb.ft (30 Nm)
F 35 lb.in. (4 Nm)

WARNING

Gas leaks can lead to explosions. Check the gas pipe seals to ensure that there are no leaks.

Remove the Ventura extension A and gasket B.
Loosen the gas connection pipe C.
Remove the two 4 mm Allen screws F and remove gas valve E.
Remove, using pliers, and discard shipping plug in replacement gas valve outlet (location G) before installing orifice.
Remove, using pliers, orifice G out of gas valve being replaced and insert into new gas valve.
Note: Refer to ‘Identification of the Fixed Gas Orifice’ Chart

MPORTANT

Install new gas connection pipe gasket D and profile gasket H as supplied.

Set adjusting screw on gas valve to:
for natural gas or
for liquid propane gas
Reassemble as per steps 3 through 1 respectively and torque fasteners.
Install the front enclose panel.
Place the boiler back in operation.

Refer to the Installation and Service Instructions applicable to this boiler.

Identification of the Fixed Gas Orifice

WB2B Boiler Size 19, 26, 35

Color|

black

---|---
Stamped No. A| 0 6
D1| 3.20 mm
D2| 4.20 mm

Legend

Tightening torque of fasteners:

C 22 lb.ft (30 Nm)
F 35 lb.in. (4 Nm)

WARNING

Gas leaks can lead to explosions. Check the gas pipe seals to ensure that there are no leaks.

Remove the Ventura extension A and gasket B.
Loosen the gas connection pipe C.
Remove the two 4 mm Allen screws F and remove gas valve E.
Remove, using pliers, and discard shipping plug in replacement gas valve outlet (location G) before installing orifice.
Remove, using pliers, orifice G out of gas valve being replaced and insert into new gas valve.
Note: Refer to ‘Identification of the Fixed Gas Orifice’ Chart

MPORTANT

Install new gas connection pipe gasket D and profile gasket H as supplied.

Set adjusting screw on gas valve to:
for natural gas or
for liquid propane gas
Reassemble as per steps 3 through 1 respectively and torque fasteners.
Install the front enclose panel.
Place the boiler back in operation.

Refer to the Installation and Service Instructions applicable to this boiler.

Identification of the Fixed Gas Orifice

WB2B Boiler Size 19, 26, 35

Color|

black

---|---
Stamped No. A| 0 6
D1| 3.20 mm
D2| 4.20 mm

VIESSMAN- Vitodens-200-W-WB2B-Gas-Valve-04

Legend

Tightening torque of fasteners:

C 22 lb.ft (30 Nm)
F 35 lb.in. (4 Nm)

WARNING

Gas leaks can lead to explosions. Check the gas pipe seals to ensure that there are no leaks.

Remove the Ventura extension A and gasket B.
Loosen the gas connection pipe C.
Remove the two 4 mm Allen screws F and remove gas valve E.
Remove, using pliers, and discard shipping plug in replacement gas valve outlet (location G) before installing orifice.
Remove, using pliers, orifice G out of gas valve being replaced and insert into new gas valve.
Note: Refer to ‘Identification of the Fixed Gas Orifice’ Chart

MPORTANT

Install new gas connection pipe gasket D and profile gasket H as supplied.