Viessmann VITOCELL 300B Istruzioni operative

Service instructions

for contractors

VIESMANN

Vitocell 300-B

Type EVBA-A

DHW cylinder, 300 and 500 l

Vitocell 300-V/W

Type EVIA-A

DHW cylinder, 160 to 500 l

For applicability, see the last page

VITOCELL 300-B

VITOCELL 300-V/W

5791 764 GB 3/2017 Please keep safe.

Please follow these safety instructions closely to

prevent accidents and material losses.

Safety instructions explained

Danger

This symbol warns against the risk of injury.

!Please note

This symbol warns against the risk of material

losses and environmental pollution.

Note

Details identified by the word "Note" contain additional

information.

Target group

These instructions are exclusively intended for quali-

fied contractors.

■Work on electrical equipment may only be carried

out by a qualified electrician.

■The system must be commissioned by the system

installer or a qualified person authorised by the

installer.

Regulations to be observed

■National installation regulations

■Statutory regulations for the prevention of accidents

■Statutory regulations for environmental protection

■Codes of practice of the relevant trade associations

■All relevant safety regulations as defined by DIN, EN,

DVGW, VDE and locally applicable standards

aÖNORM, EN and ÖVE

cSEV, SUVA, SVTI, SWKI and SVGW

Working on the system

■Isolate the system from the power supply (e.g. by

removing the separate fuse or by means of a mains

isolator) and check that it is no longer live.

■Safeguard the system against reconnection.

!Please note

Electronic assemblies can be damaged by elec-

trostatic discharge.

Prior to commencing any work, touch earthed

objects such as heating or water pipes to dis-

charge static loads.

Danger

Hot surfaces can cause burns.

■Before maintenance and service work, switch

OFF the appliance and let it cool down.

■Never touch the hot surfaces of uninsulated

pipes and fittings.

Repair work

!Please note

Repairing components that fulfil a safety func-

tion can compromise the safe operation of the

system.

Replace faulty components only with genuine

Viessmann spare parts.

Safety instructions

5791 764 GB

Auxiliary components, spare and wearing parts

!Please note

Spare and wearing parts that have not been tes-

ted together with the system can compromise its

function. Installing non-authorised components

and making non-approved modifications or con-

versions can compromise safety and may inva-

lidate our warranty.

For replacements, use only original spare parts

supplied or approved by Viessmann.

Safety instructions

Safety instructions (cont.)

5791 764 GB

1. Information Symbols ................................................................................................. 5

Intended use .......................................................................................... 5

Product information ................................................................................ 6

Inspection and maintenance .................................................................. 6

2. Commissioning, inspec-

tion, maintenance

Steps - commissioning, inspection and maintenance ............................ 7

3. Parts lists Vitocell

300-V/W, 160 and 200 l

Overview of assemblies ......................................................................... 11

DHW cylinder ......................................................................................... 12

4. Parts lists Vitocell

300-B/V/W, 300 l

Overview of assemblies ......................................................................... 15

Vitocell 300-B DHW cylinder .................................................................. 16

Vitocell 300-V/W DHW cylinder ............................................................. 18

Immersion heater flange ........................................................................ 20

5. Parts lists Vitocell 300-B/V,

500 l

Overview of assemblies ......................................................................... 23

Vitocell 300-B cylinder body .................................................................. 24

Vitocell 300-V cylinder body .................................................................. 26

Vitocell 300-B/V thermal insulation ........................................................ 28

Immersion heater flange ........................................................................ 30

6. Commissioning/service

reports

................................................................................................................ 32

7. Specification ................................................................................................................ 33

8. Appendix Final decommissioning and disposal ..................................................... 35

9. Certificates Declaration of conformity ....................................................................... 36

■Vitocell 300-B and Vitocell 300-V/W ................................................... 36

Index

5791 764 GB

Symbol Meaning

Reference to other document containing

further information

Step in a diagram:

The numbers correspond to the order in

which the steps are carried out.

Warning of material losses and environ-

mental pollution

Live electrical area

Pay particular attention.

■Component must audibly click into place.

■Acoustic signal

■Fit new component.

■In conjunction with a tool: Clean the sur-

face.

Dispose of component correctly.

Dispose of component at a suitable collec-

tion point. Do not dispose of component in

domestic waste.

The steps in connection with commissioning, inspec-

tion and maintenance are found in the "Commission-

ing, inspection and maintenance" section and identified

as follows:

Symbol Meaning

Steps required during commissioning

Not required during commissioning

Steps required during inspection

Not required during inspection

Steps required during maintenance

Not required during maintenance

Intended use

The appliance is only intended to be installed and

operated in sealed unvented systems that comply with

EN 12828 / DIN 1988, or solar thermal systems that

comply with EN 12977, with due attention paid to the

associated installation, service and operating instruc-

tions. DHW cylinders are only designed to store and

heat water of potable water quality. Heating water buf-

fer cylinders are only designed to hold fill water of pot-

able water quality. Only operate solar collectors with

the heat transfer medium approved by the manufac-

turer.

Intended use presupposes that a fixed installation in

conjunction with permissible, system-specific compo-

nents has been carried out.

Commercial or industrial usage for a purpose other

than heating the building or DHW shall be deemed

inappropriate.

Any usage beyond this must be approved by the man-

ufacturer for the individual case.

Incorrect usage or operation of the appliance (e.g. the

appliance being opened by the system user) is prohibi-

ted and results in an exclusion of liability.

Incorrect usage also occurs if the components in the

system are modified from their intended use (e.g.

through direct DHW heating in the collector).

Adhere to statutory regulations, especially concerning

the hygiene of potable water.

Information

Symbols

5791 764 GB

Information

Vitocell 300-B, type EVBA-A

Stainless steel DHW cylinder with internal indirect coil

for DHW heating in conjunction with solar thermal sys-

tems, floorstanding and wall mounted boilers and/or

heat pumps for dual mode operation.

Capacity: 300 and 500 l

Vitocell 300-V/W, type EVIA-A

Stainless steel DHW cylinder with internal indirect coil

for DHW heating in conjunction with floorstanding and

wall mounted boilers.

Capacity: 160, 200, 300 and 500 l

Vitocell 300-B and Vitocell 300-V/W

■An immersion heater can be used for 300 and 500 l

cylinder capacities.

■Suitable for systems to DIN 1988, EN 12 828 and

DIN 4753

Inspection and maintenance

DIN 1988 requires a visual inspection and (if neces-

sary) cleaning no later than 2 years after the cylinder

has been commissioned, and thereafter according to

requirements.

Information

Product information

5791 764 GB

Information

Commissioning steps

Inspection steps

Maintenance steps Page

•1. Filling the DHW cylinder...................................................................................................... 8

• • 2. Shutting down the system

• • 3. Checking the sensor wells for leaks

• • 4. Checking the safety valve function

• • 5. Cleaning the inside of the DHW cylinder........................................................................... 8

• • 6. Returning the DHW cylinder to use.................................................................................... 9

• • 7. Checking connections and sensor wells for tightness on the water side

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance

5791 764 GB

1. Fill the DHW cylinder on the DHW side.

Note

If the DHW cylinder is pressurised, retighten the

flange cover with a torque of 40 Nm.

The cylinder cap does not need to be retightened.

2. Check the fittings on the heating water and DHW

sides for leaks and retighten if required.

3. Check the function of the safety valves according

to the manufacturer's instructions.

Shutting down the system

Checking the sensor wells for leaks

Checking the safety valve function

Cleaning the inside of the DHW cylinder

D E

Fig. 1

01. Drain the DHW cylinder on the DHW side.

02. Remove top panel A and cover B (for 300 and

500 l).

03. Remove thermal insulation C.

For 160 to 300 l: Flange insulation

For 500 l: Upper thermal insulation mat

04. Pull out thermometer sensor D (where installed),

disconnecting the spring clip to do so.

05. Pull out high limit safety cut-out sensor E, remov-

ing the clamping bracket with wing screw to do so.

06. Remove flange cover F (for 300 and 500 l) and

cylinder cap G with stainless steel circular blank

H and gaskets K.

07. To prevent cleaning agents and contaminants

entering the pipework, separate the DHW cylinder

from the pipework.

08. Remove loose deposits with a high pressure

cleaner.

!Please note

Pointed or sharp cleaning tools will damage

the cylinder interior.

Only use plastic tools to clean the inside.

Commissioning, inspection, maintenance

Filling the DHW cylinder

5791 764 GB

09. Use a chemical cleaning agent to remove hard

deposits that cannot be removed with a high pres-

sure cleaner.

!Please note

Cleaning agents containing hydrochloric

acid will attack the DHW cylinder material.

Use cleaning agents suitable for stainless

steel only.

Danger

Cleaning agent residues can result in poi-

soning.

Always observe the information provided by

the cleaning agent manufacturer.

10. Fully drain all cleaning agent.

11. Flush the DHW cylinder thoroughly after clean-

ing.

Returning the DHW cylinder to use

D E

Fig. 2

1. Reconnect the DHW cylinder to the pipework.

2. Insert new gaskets K to flange cover F (for 300

and 500 l) and on cylinder cap G.

3. Mount flange cover F (for 300 and 500 l) and cyl-

inder cap G with stainless steel circular blank H

and tighten to required torque.

■Cylinder cap: 160 Nm

■Flange cover: 40 Nm

4. Fill the DHW cylinder on the DHW side.

5. When the DHW cylinder is pressurised, retighten

the screws on flange cover F to a torque of

40 Nm.

6. Mount thermometer sensor D (where installed)

and high limit safety cut-out sensor E, thermal

insulation C, cover B, and top panel A.

Checking connections and sensor wells for tightness on the water side

Commissioning, inspection, maintenance

Cleaning the inside of the DHW cylinder (cont.)

5791 764 GB

Commissioning, inspection, maintenance

Checking connections and sensor wells for tightness on the water side

5791 764 GB

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