Viessmann VITOCELL 100-B Istruzioni operative

Service instructions

for contractors

VIESMANN

Vitocell 100-B

Type CVE

DHW cylinder

VITOCELL 100-B

5677415 GB 9/2019 Please keep safe.

Please follow these safety instruc-

tions 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 environmen-

tal pollution.

Note

Details identified by the word "Note"

contain additional information.

Target group

These instructions are exclusively inten-

ded for qualified 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 per-

son 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

■Relevant country-specific safety regu-

lations

Working on the system

■Isolate the system from the power sup-

ply (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 recon-

nection.

!Please note

Electronic assemblies can be dam-

aged by electrostatic discharge.

Prior to commencing any work,

touch earthed objects such as heat-

ing or water pipes to discharge

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.

Safety instructions

5677415

Danger

Floors that are wet or damp with

water or glycol based liquids can

cause injury due to slipping and fall-

ing.

■Keep the floor clean and dry dur-

ing installation and maintenance

work.

■Wear non-slip shoes.

Danger

Broken-off fragments of insulation

material can cause death by suffo-

cation if inhaled or swallowed.

■Do not let children play in the

installation room.

■Keep the installation room clean

after installation and maintenance

work.

Repair work

!Please note

Repairing components that fulfil a

safety function can compromise the

safe operation of the system.

Replace faulty components only

with genuine Viessmann spare

parts.

Auxiliary components, spare and wearing parts

!Please note

Spare and wearing parts that have

not been tested together with the

system can compromise its func-

tion. Installing non-authorised com-

ponents and making non-approved

modifications or conversions can

compromise safety and may invalid-

ate our warranty.

For replacements, use only original

spare parts supplied or approved by

Viessmann.

Safety instructions

Safety instructions (cont.)

5677415

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

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

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

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

System examples .................................................................................. 6

Spare parts lists ..................................................................................... 6

2. Commissioning, inspec-

tion, maintenance

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

3. Connection and wiring dia-

gram

Immersion heater EHT ........................................................................... 14

4. Commissioning/service

reports

................................................................................................................ 15

5. Specification ................................................................................................................ 16

6. Disposal Final decommissioning and disposal ..................................................... 17

7. Certificates Declaration of conformity ....................................................................... 18

Index

5677415

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

5677415

Information

Vertical DHW cylinder made from steel with Cerapro-

tect enamel coating.

With immersion heater EHE for heating with surplus

electricity and with indirect coil for reheating by the

boiler.

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.

Note

In addition, we recommend an annual visual inspection

of the protective magnesium anode (see page 10).

System examples

Available system examples: See www.viessmann-

schemes.com.

Spare parts lists

Information about spare parts can be found on the

Viessmann spare parts app.

Information

Product information

5677415

Information

Commissioning steps

Inspection steps

Maintenance steps Page

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

• • 2. Draining the DHW cylinder on the DHW side (if required)............................................. 8

• • 3. Shutting down the system

• • 4. Checking the function of safety valves

• • 5. Checking the anode earth current with an anode tester................................................ 8

•6. Cleaning and descaling the inside of the DHW cylinder................................................ 9

• • 7. Checking and replacing the protective magnesium anode (if required)....................... 10

• • 8. Returning the DHW cylinder to use.................................................................................. 11

• • 9. Checking the connections on the water side for leaks

• • 10. Removing the cap from the immersion heater................................................................ 12

•11. Resetting the high limit safety cut-out............................................................................. 12

•12. Replacing the TR/HLSC combination device................................................................... 12

•13. Replacing the heating element of the immersion heater................................................ 13

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance

5677415

1. Fill the DHW cylinder on the DHW side.

Note

When the DHW cylinder is pressurised, tighten the

screws in the flange cover. Max. torque: 25 Nm

2. Check the fittings on the heating water and DHW

side for leaks and tighten if required.

3. Check the function of the safety valves according

to the manufacturer's instructions.

Draining the DHW cylinder on the DHW side (if required)

1. Shut off the cold water supply.

2. Open the DHW draw-off points (to release the

pressure).

3. Drain the DHW cylinder from the drain valve in the

cold water supply.

Shutting down the system

Checking the function of safety valves

Checking the anode earth current with an anode tester

C D

Fig. 1

1. Remove cover A and flange insulation B.

2. Disconnect earth cable C from tab D.

3. Connect tester in series across earth cable C and

tab D.

■If a current of > 0.3 mA can be measured, the

protective magnesium anode is OK.

■If a current of < 0.3 mA or no current at all can be

measured, inspect the protective magnesium

anode visually (see page 10).

Commissioning, inspection, maintenance

Filling the DHW cylinder

5677415

Danger

Unchecked leakage of DHW or heating water

can result in scalding and structural damage.

Only open the DHW and heating water connec-

tions after the DHW cylinder has been depres-

surised.

1. Drain the DHW cylinder on the DHW side.

!Please note

Material losses may result from draining with

a vacuum pump when the air vent valve is

closed.

Open the air vent valve during draining.

Fig. 2

2. Remove cover A, flange insulation B and flange

cover C. Dispose of gasket D.

Commissioning, inspection, maintenance

Cleaning and descaling the inside of the DHW cylinder

5677415

Fig. 3

3. Remove cap E, flange cover F and gasket G.

Dispose of gasket G.

4. Disconnect the DHW cylinder from the pipework to

prevent cleaning agents and contaminants from

entering the pipework.

5. Remove loose deposits with a pressure cleaner.

!Please note

Pointed or sharp cleaning tools will damage

the cylinder interior.

Only use plastic cleaning equipment to clean

the inside.

6. Use a chemical cleaning agent to remove hard

deposits that cannot be removed with a pressure

cleaner.

!Please note

Cleaning agents containing hydrochloric acid

will attack the DHW cylinder material.

Never use such cleaning agents.

Danger

Cleaning agent residues can cause poison-

ing.

Always observe the information provided by

the cleaning agent manufacturer.

7. Fully drain all cleaning agent.

8. Flush the DHW cylinder thoroughly after cleaning.

Checking and replacing the protective magnesium anode (if required)

Fig. 4

Check protective magnesium anode E.

If the 7 is ≤ 10 − 15 mm, replace the protective mag-

nesium anode.

Commissioning, inspection, maintenance

Cleaning and descaling the inside of the DHW… (cont.)

5677415

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