Viessmann VITOCELL 100-U Manuale utente

Installation instructions

for contractors

VIESMANN

Vitocell 100-U

Type CVUB

Dual mode DHW cylinder with Solar-Set

Vitocell 100-W

Type CVUB/CVUB-A

Dual mode DHW cylinder with Solar-Set

VITOCELL 100-U

VITOCELL 100-W

5838620 GB 2/2019 Dispose after installation.

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.

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.

■Wear protective clothing.

!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 which are wet, damp or covered in fluids

containing glycol present a risk of injury through

slipping and falling.

■When carrying out installation and mainte-

nance work, ensure that the floor is kept clean

and dry.

■Wear non-slip shoes.

Danger

Breathing in or swallowing broken-off fragments

of insulating material may result in death by

asphyxiation.

■Do not allow children to play in the installation

room.

■Clean the installation room after installation

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

5838620

1. Information Disposal of packaging ............................................................................ 4

Symbols ................................................................................................. 4

Intended use .......................................................................................... 4

Product information ................................................................................ 5

2. Installation information Preparing for installation ........................................................................ 6

■Connections ........................................................................................ 6

■Siting information ................................................................................ 6

3. Installation sequence Solar-Set ................................................................................................ 7

■Solar-Set fixings ................................................................................. 7

■Fitting the Solar-Set ............................................................................ 7

Hydraulic connection (on the solar side) ................................................ 8

■Lower heating water connections (solar) ............................................ 8

■Upper heating water connections (solar) ............................................ 12

Safety assembly .................................................................................... 12

Thermometer sensors ............................................................................ 13

Cylinder temperature sensor of the boiler control unit ........................... 14

Connecting the solar control unit ........................................................... 14

Closing the Solar-Set ............................................................................. 15

Checking the anode connection and fitting the cover ............................ 16

Connecting the heating water side and solar side ................................. 16

■System examples ............................................................................... 17

Connections on the DHW side ............................................................... 17

■Safety valve ........................................................................................ 18

Installing the high limit safety cut-out (STB) .......................................... 19

■Electrical connections ......................................................................... 19

■Setting the response temperature ...................................................... 20

■Resetting the high limit safety cut-out (STB) ...................................... 20

Connecting the equipotential bonding ................................................... 20

Commissioning ...................................................................................... 20

4. Specification ................................................................................................................ 21

Index

5838620

Please dispose of packaging waste in line with statu-

tory regulations.

Symbols

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.

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.

Disposal of packaging

5838620

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.

Product information

Enamelled DHW cylinder with internal indirect coil for

DHW heating in conjunction with solar thermal sys-

tems, as well as floorstanding and wall mounted boil-

ers in dual mode operation.

■DHW cylinder, fully equipped with Solar-Set, com-

prising:

–Solar-Divicon

–Vitosolic 100, type SD1 or SDIO/SM1A electronics

module

–Pre-assembled pipework

■For cylinder capacity and weight, see page 21.

■Suitable for systems conforming to DIN 1988,

EN 12828 and DIN 4753

■Vitocell 100-W: In white, otherwise identical to

Vitocell 100-U

Intended use (cont.)

5838620

Connections

Fig. 1

AThermometer sensor connection

BMagnesium anode with earth cable

CHeating water return, solar (lower indirect coil, col-

lector connection)

DDHW to pipework

EHeating water flow, solar (lower indirect coil, col-

lector connection)

FSensor well for cylinder temperature sensor of the

boiler control unit

GHeating water flow, boiler (upper indirect coil)

HDHW circulation

KHeating water return, boiler (upper indirect coil)

LCold water/drain outlet

MHeating water return, solar (lower indirect coil, con-

nection to heat exchanger)/sensor well for cylinder

temperature sensor, solar

NSensor well for lower thermometer

OHeating water flow, solar (lower indirect coil, con-

nection to heat exchanger)

Siting information

!Please note

The thermal insulation must not be able to come

into contact with naked flames.

Exercise caution when welding and soldering.

!Please note

To prevent material losses, site the DHW cylin-

der in a room free from the risk of frost and

draughts.

When not in use, the DHW cylinder must be

drained if there is a risk of frost.

Use the adjustable feet to level the DHW cylinder.

Note

Never extend the adjustable feet beyond a total length

of 35 mm.

Preparing for installation

5838620

Solar-Set fixings

Fig. 2

Insert the supplied screws together with washers

(h = 3 mm) approx. half way into the DHW cylinder.

Fitting the Solar-Set

Fig. 3

1. Hook the base support for the Solar-Set onto the 3

screws.

2. Tighten all screws with a torque of 10 Nm.

3. Remove the foam transport packing and cable ties

for securing the pump and pipes from within the

Solar-Set.

4. Bend down the two sheet metal transport brackets.

5. Align the solar lines with the pipe clips.

Solar-Set

5838620

Lower heating water connections (solar)

Note

If a heat meter is installed, continue to page 9

Fig. 4

AHeating water return, solar

BHeating water flow, solar

1. Secure solar heating water flow line B using the

flat gasket and union nut provided. Torque: 50 Nm.

2. Secure solar heating water return line A using the

flat gasket and union nut provided. Torque: 50 Nm.

Cylinder temperature sensor of the Solar-Set

Note

The cylinder temperature sensor is already factory-fit-

ted.

Fig. 5

AHeating water return, solar

1. Insert the sensor well and locking ring into the

solar elbow.

2. Tighten the union nut onto the solar elbow, with a

torque of 20 Nm.

Note

Counterhold mating part with a spanner.

3. Insert the cylinder temperature sensor into the

solar elbow as far as it will go and fasten with the

strain relief screw.

Hydraulic connection (on the solar side)

5838620

Heat meter (if installed)

Fig. 6

1. Disconnect the return pipe.

2. Disconnect the flow solar elbow.

450

154

238

Fig. 7

Trim the return pipe and insulation.

Hydraulic connection (on the solar side) (cont.)

5838620

Fig. 8

1. Fit the flow sensor to the return pipe.

Note

The arrow on the flow sensor must point upwards.

2. Fit the return pipe.

Hydraulic connection (on the solar side) (cont.)

5838620

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