Viessmann VITODENS 200 WB2A Note de version

VITODENS 200 WB2A

INSTALLATION & SERVICING INSTRUCTIONS

Fully automatic fan assisted balanced flue condensing

Combination & System boiler for use with Natural Gas or Propane.

Section 1

General Information

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Section 2

Technical Specifications

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Section 3

Installation Requirements

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20

Section 4

Installation Procedure

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-35

Section 5

Commissioning and Testing

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36-43

Section 6

Routine Servicing Instructions

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44-49

Section 7

Internal Wiring

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Section 8

Fault Finding

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51-52

Section 9

Replacement of Parts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53-69

Section 10

Replacement Parts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70-73

Section 11

Index

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74-75

Benchmark Booklet

Service Interval Record

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76-79

Contents

Appliance gas council numbers: 47-819-06 Vitodens 200 WB2A 26kW Combi

41-819-11 Vitodens 200 WB2A 26kW System

The Vitodens 200 is a fully automatic, wall hung, fan assisted balanced flue condensing system and

combination boiler for use with Natural Gas (G20) or Propane (G31). The appliance incorporates a

microprocessor based fully modulating gas control system with direct burner ignition.

The appliance features an attractive white enamelled casing with an inset control panel behind a drop

down door.

The Vitodens 200 provides central heating output between 8.0 kW (27,300Btu/h) and 24.7 kW

(84,300Btu/h) and instantaneous hot water at outputs between 8.0 kW (27,300 Btu/h) and 27.4 kW

(93,550 Btu/h). If required, the heat output can be range rated to suit the system requirements.

Heat output is controlled according to demand (in both domestic hot water and central heating mode)

by the modulating gas control. The appliance always gives priority to domestic hot water supply.

The appliance is designed for use with sealed primary water systems (only) and incorporates a

circulation pump, diverter valve assembly, pressure gauge, flow switch, DHW plate heat exchanger,

safety valve and CH expansion vessel. A separate DHW expansion vessel is not required.

Isolation valves are supplied for the heating service connections, a filling loop is included and an

automatic heating bypass is fitted to maintain an adequate flow rate through the boiler. Note that if

thermostatic radiator valves are installed we recommend that one radiator is fitted with lockshield

valves (normally in the bathroom).

If desired, the mounting bracket may be fitted and the system pipework and flue system completed

and pre-filled prior to the boiler being fitted.

Internal frost protection and an electronic control unit is fitted as standard equipment and the boiler

may be used with any suitable room thermostat and/or time clock in addition to the optional controls

available from Viessmann.

The boiler is supplied with a standard concentric air and flue duct system 125mm diameter (5 in),

which is suitable for a wall thickness of up to 360 mm (14 in) for a rear flue or 345 mm (13 3/5 in) for

a side flue with minimum clearances. The duct assembly is connected to the boiler by a

multidirectional turret, which can exit the boiler in any horizontal direction. Extension ducts may be

fitted up to a total length of 10 m (393 in).

A vertical outlet kit is also available for installation where an outside wall is not accessible and it is

necessary to fit the duct through the roof.

The appliance incorporates an electronic fault diagnosis system and display to facilitate rapid

identification of any fault conditions.

1 General Information

1.1 Appliance Description

Mode Rate Output Input

KW Btu/h Net Gross

Central Heating Max 24.7 84,300 25.7 87,700 28.5 97,100

Min 8.0 27,300 8.4 28,660 9.3 31,800

Domestic Hot Water Max 27.4 93,550 29.5 100,650 32.74 111,700

Min 8.0 27,300 8.4 28,660 9.3 31,800

2.1.1 Thermal Performance Details

2.1.2 General Performance Details

The Vitodens 200 is certified to comply with the requirements of EN 483 and EN 625 for use in

GB and IE (Great Britain and Ireland) using gas category 2H (G20 with a governed gas supply at

20 mbar (8 in.wg) inlet pressure) or 3P (G31 with a supply pressure of 37mb(14.5in wg)).

The appliance classification is either C13 or C33 depending upon whether a horizontal or vertical

flue terminal is used.

1 General Information

2 Technical Specifications

1.2 Certification Details

2.1 Performance Data

(Combi only)

Boiler Model

Maximum gas rate (after 10mins operation i.e. hot) (DHW)

Domestic hot water flow rate

Design domestic hot water performance (specific rate)

Domestic hot water temperature range

Maximum mains water inlet pressure

Minimum mains water inlet pressure for operation

Minimum mains water inlet pressure for max output

Combi

3.1m_/h (110 ft_/h)

4-14l/min (0.88 – 3.1 gpm)

13.1l/min

38 – 57°C

10 bar (145psi)

1.0 bar (14.5psi)

2.0 bar (29psi)

System

2.7m3/h (96ft3/h)

2.2 General Specifications

2 Technical Specifications

2.3 Overall Appliance Dimensions

Boiler Model Combi System

Main burner gas restrictor 6.2mm 6.2mm

Total water capacity (Including expansion Vessel) 11litres 10.5litres

Minimum CH system pressure (static head) – Cold 0.8 bar (11.6psi) 0.8 bar (11.6psi)

Maximum CH system pressure (static head) – Hot 3 bar (43psi) 3 bar (43psi)

Empty weight 54kg 52kg

Electrical supply 230V – 50Hz 230V – 50Hz

Internal fuses 6.3A 6.3A

Maximum power consumption 165w 165w

Maximum CH flow temperature 74°C 74°C

Integral expansion vessel capacity 10 Litres 10 Litres

Integral expansion vessel pre-charge pressure 0.75 bar (11psi) 0.75 bar (11psi)

2.5.1 Concentric Horizontal Flue Systems

Standard horizontal flue kit: The appliance is supplied complete with a standard concentric

horizontal balanced flue terminal assembly suitable for flue lengths of up to 620 mm (24.4 in)

from the centre of the flue outlet which equates to wall thicknesses of up to 380 mm (15 in) for

rear flues or 370 mm (14.6 in) for side flues with minimum clearances.

Extension ducts can be used to increase the straight flue length up to 10 m (393 in) and include

two 87° elbows or three 45°elbows. An extra 87° elbow can be used but this reduces the

maximum permissible length by 1m (40 in). An extra 45° elbow can be used but this reduces the

maximum permissible length by 0.5 m (20 in).

Right hand side 10mm (3/8in) 10mm (3/8in)

Left hand side 10mm (3/8in) 10mm (3/8in)

Top (above casing) 350mm (14in) 350mm (14in)

Front 450mm (18in) 450mm (18in)

The following minimum clearances must be maintained for installing and servicing the appliance.

Connection Sizes Combi System

Gas Rc 1/2 (Female) Rc 1/2 (Female

Central heating flow Rc 3/4 (Female) Rc 3/4 (Female)

Central heating return Rc 3/4 (Female) Rc 3/4 (Female)

Domestic water inlet Rc 1/2 (Female) _

Domestic water outlet Rc 1/2 (Female) _

Pressure relief valve outlet Rc 3/4 (Female) Rc 3/4 (Female)

Condensate connection 19mm (Female) Flexible 19mm (Female) Flexible

2 Technical Specifications

2.4 Minimum Installation Clearances

2.5 Flue System Specifications

2.5.2 Concentric Vertical Flue Systems

The vertical flue kit (optional extra) with extensions may be used to provide a straight

length of up to10 m (393 in) and include two 87° elbows or three 45° elbows.

An extra 87° elbow can be used but this reduces the maximum permissible length by 1 m

(40 in). An extra 45° elbow can be used but this reduces the maximum permissible length

by 0.5 m (20 in).

Refer to figure 2/A to determine which option kits are required before commencing the

installation. Installation instructions for installing the appliance with a standard flue and

straight extension ducts are included in the main text of these instructions.

Figure 2/A shows the optional flue systems available for use with the Vitodens 200.

2 Technical Specifications

CONCENTRIC HORIZONTAL

CONCENTRIC VERTICAL

2.6 Hydraulic Circuit

Figure 2/B: Hydraulic Circuit

2 Technical Specifications

Figure 2/C: Sectional Diagram (Combi Boiler Illustrated)

2.7 Sectional Diagram

2 Technical Specifications

GAS SAFETY (INSTALLATION AND USE) REGULATIONS (CURRENT ISSUE)

It is the law that all gas appliances are installed by a registered person, in accordance with the

above regulations. Failure to install appliances correctly could lead to prosecution. It is in your

own interest and that of safety, to ensure that the law is complied with.

In addition to the above regulations, this appliance must be installed in accordance with the

current IEE Wiring Regulations for electrical installation (BS 7671), local Building Regulations, the

Building Standards (Scotland) (Consolidation) Regulations, bye laws of the local water

undertaking and Health and Safety Document No. 635 ‘The Electricity at Work regulations 1989’.

It should also be in accordance with the relevant recommendations in the current editions of the

following British Standards and Codes of Practice: BS 5449, BS 5546, BS 5440:1, BS 5440:2, BS

6798, BS 7593, BS 6891 and IGE/UP/7.

IMPORTANT NOTES:

Please be advised that NO asbestos, mercury or CFC’s have been, nor will be, used in this

product

Manufacturers instructions must not be taken in any way as overriding statutory

obligations.

3 Installation Requirements

3.1 Statutory Requirements

a) The boiler is not suitable for external installation. The position selected for

installation should be within the building, unless otherwise protected by a

suitable enclosure and MUST allow adequate space for installation, servicing

and operation of the appliance and for air circulation around it. (Refer to

sections 2.4 and 3.4).

b) This position MUST allow for a suitable flue system and terminal position.

(Refer to sections 2.5 and 3.3). The combination boiler must be installed on

a flat vertical wall capable of supporting the weight of the appliance and any

ancillary equipment when full.

c) Due consideration should be given to the routing of the condensate drain

from the chosen position.

The following limitations MUST be observed when siting the boiler:

3.2 Boiler Position

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