Viessmann Vitocell 100-b Operating instructions

Service instructions

for contractors

VIESMANN

Vitocell 100-B

Type CVBA

Dual mode DHW cylinder with Solar-Divicon

Vitocell 100-W

Type CVBA

Dual mode DHW cylinder with Solar-Divicon

VITOCELL 100-B

VITOCELL 100-W

5838648 GB 2/2019 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

■Relevant country-specific safety regulations

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.

Danger

Floors that are wet, damp or wetted with glycol

based liquids can cause injury due to slipping

and falling.

■Keep the floor clean and dry during installation

and maintenance work.

■Wear non-slip shoes.

Danger

Broken-off fragments of insulation material can

cause death by suffocation if inhaled or swal-

lowed.

■Do not let children play in the installation

room.

■Keep the installation room clean after installa-

tion and maintenance work.

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

5838648

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.)

5838648

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

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

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

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

2. Operating principles Ball valve positions ................................................................................ 7

Venting the solar heating water flow (HFs) ............................................ 7

Setting the flow rate on the solar side .................................................... 7

Flushing and filling ................................................................................. 7

High limit safety cut-out (HLSC) ............................................................ 7

3. Commissioning, inspec-

tion, maintenance

Steps - commissioning, inspection and maintenance ............................ 8

4. Displays and troubleshoot-

ing

LED at the high efficiency circulation pump ........................................... 13

5. Commissioning/service

reports

................................................................................................................ 14

6. Specification ................................................................................................................ 15

7. Disposal Final decommissioning and disposal ..................................................... 17

8. Declaration of Conformity ................................................................................................................ 18

9. Keyword index ................................................................................................................ 19

Index

5838648

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

5838648

Information

DIN 1988 requires a visual inspection and (if required)

cleaning no later than two years after the cylinder has

been taken into use and thereafter according to

requirements.

Note

In addition, we recommend an annual visual inspection

of the protective magnesium anode (see page 11).

Spare parts lists

Information about spare parts can be found on the

Viessmann spare parts app.

Information

Inspection and maintenance

5838648

Information

Ball valve in the solar heating water flow and in the

solar heating water return inside the Solar-Divicon:

■In line with the pipe run:

–Open

■Perpendicular to the pipe run:

–Closed

■At 45° angle to the pipe run:

–Check valve open

–The 45° angle (towards the right or left) is only

required for filling and draining the system.

Vitosol service instructions

Venting the solar heating water flow (HFs)

Vent at the air vent valve on the air trap.

Setting the flow rate on the solar side

With a 3-stage solar circuit pump: Adjust via the flow

meter at the solar heating water return.

With a high efficiency solar circuit pump: Fully open

the ball valve of the flow meter. The flow rate is elec-

tronically controlled.

Flushing and filling

Use the fill valve on the solar heating water return. Note

Optional connection of a manual solar fill pump (solar

thermal accessory) to raise the pressure after venting.

High limit safety cut-out (HLSC)

Setting the response temperature

Note

The rotary selector is located in the enclosure.

°C

120

110

Fig. 1

1. Open the casing.

2. At the setting scale, select 95 °C.

Resetting the high limit safety cut-out

Note

The water temperature must have dropped by at least

20 K.

Fig. 2

Press reset button A.

Operating principles

Ball valve positions

5838648

Operation

Commissioning steps

Inspection steps

Maintenance steps Page

•1. Filling the DHW cylinder...................................................................................................... 9

• • 2. Shutting down the system

• • 3. Checking the safety valve function

• • 4. Testing the anode earth current with an anode tester...................................................... 9

• • 5. Cleaning the inside of the DHW cylinder........................................................................... 9

• • 6. Checking and replacing the protective magnesium anode (if required)......................... 11

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

• • 8. Checking the connections on the water side for tightness

•9. Replacing the Vitosolic 100 or the SDIO/SM1A electronics module............................... 12

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance

5838648

1. Fill the DHW cylinder on the DHW side.

Note

If the DHW cylinder is pressurised, tighten the

flange cover with a torque of 25 Nm.

2. Check the fittings on the heating water and DHW

sides for leaks and tighten if required.

3. Check the function of the safety valves according

to the manufacturer's instructions.

Shutting down the system

Checking the safety valve function

Testing the anode earth current with an anode tester

Fig. 3

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.

■The protective magnesium anode is OK if there

is a current > 0.3 mA.

■If there is a current of < 0.3 mA or no current at

all, inspect the protective magnesium anode vis-

ually (see page 11).

Cleaning the inside of the DHW cylinder

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.

Commissioning, inspection, maintenance

Filling the DHW cylinder

5838648

Fig. 4

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.

2. Remove cover A, flange insulation B and flange

cover E.

3. Disconnect the DHW cylinder from the pipework to

prevent cleaning agents and contaminants from

entering the pipework.

4. Remove loose deposits with a pressure cleaner.

!Please note

Pointed or sharp cleaning tools will damage

the cylinder interior.

Only use plastic tools to clean the inside.

5. 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.

6. Fully drain all cleaning agent.

7. Flush the DHW cylinder thoroughly after cleaning.

Commissioning, inspection, maintenance

Cleaning the inside of the DHW cylinder (cont.)

5838648

Fig. 5

Check protective magnesium anode F.

If the protective magnesium anode has degraded to

7 10 to 15 mm, we recommend replacing it.

Returning the DHW cylinder to use

Fig. 6

1. Reconnect the DHW cylinder to the pipework.

2. Insert new gasket G under flange cover E.

3. Mount flange cover E with earth cable C and

tighten the screws with a maximum torque of

25 Nm.

4. Push earth cable C onto tab D.

5. Fill the DHW cylinder from the DHW side, then

tighten flange cover E with a torque of 25 Nm.

6. Mount flange insulation B and cover A.

Commissioning, inspection, maintenance

Checking and replacing the protective magnesium anode (if required)

5838648

Replacing the Vitosolic 100 or the SDIO/SM1A electronics module

1. Remove thermal insulation towards the front.

2. Remove the Vitosolic 100 towards the front.

Extract SDIO/SM1A electronics module towards

the front.

3. Open the control unit enclosure and disconnect the

cables/leads.

Vitosolic 100 & SDIO/SM1A electronics

module installation and service instructions

4. Install the new control unit in reverse order.

5. Adjust the Vitosolic 100 to suit the respective

pump.

Vitosolic 100 & SDIO/SM1A electronics

module installation and service instructions

Commissioning, inspection, maintenance

Checking the connections on the water side for tightness

5838648

LED Meaning Cause Remedy

Illuminates green Circulation pump in opera-

tion

— —

Flashes green in short in-

tervals

Circulation pump in stand-

— —

Fault indications

■Flashes red and green

alternately

Circulation pump is ready

for operation but not run-

ning.

Note

The circulation pump

starts automatically after

the cause of the fault has

been removed.

■Undervoltage (< 160 V~)

■Overvoltage (> 253 V~)

Check power supply

(195 V~ < U < 253 V~)

Motor temperature too

high

Check ambient and heat

transfer medium tempera-

tures

■Flashes red Circulation pump switched

off (blocked)

Circulation pump does not

start automatically.

Replacing the circulation

pump

■LED off —No power. Check connecting cable.

LED faulty Check whether the circula-

tion pump is running.

PCB faulty Replacing the circulation

pump

Displays and troubleshooting

LED at the high efficiency circulation pump

5838648

Diagnosis