Viessmann VITOCELL 100-U Istruzioni operative

VIESMANN

Service instructions

for contractors

Vitocell 100-U

Type CVU

Dual-mode DHW cylinder with Solar-Set

Vitocell 100-W

Type CVU

Dual-mode DHW cylinder with Solar-Set

VITOCELL 100-U

VITOCELL 100-W

5692 747 GB 8/2007 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

designed for qualified personnel.

&Work on gas equipment must only

be carried out by a qualified gas fit-

ter.

&Work on electrical equipment must

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

Observe the following when working

on this system

&all legal instructions regarding the

prevention of accidents,

&all legal instructions regarding

environmental protection,

&theCodeofPracticeofrelevant

trade associations,

&all current safety regulations as

defined by DIN, EN, DVGW, TRGI,

TRF, VDE and all locally applicable

standards.

If you smell gas

Danger

Escaping gas can lead to

explosions which may result in

serious injury.

&Never smoke. Prevent naked

flames and sparks. Never

switch lights or electrical

appliances ON or OFF.

&Close the gas shut-off valve.

&Open windows and doors.

&Remove all people from the

danger zone.

&Notify your gas or electricity

supplier from outside the

building.

&Shut off the electricity supply

to the building from a safe

place (outside the building).

If you smell flue gas

Danger

Flue gas can lead to life-threa-

tening poisoning.

&Shut down the heating sys-

tem.

&Ventilate the boiler room.

&Closealldoorsleadingtothe

living space.

Safety instructions

5692 747 GB

Workingonthesystem

&When using gas as fuel, also close

the main gas shut-off valve and

safeguard against unauthorised

reopening.

&Isolate the system from the power

supply and check that it is no longer

'live', e.g. by removing a separate

fuse or by means of a main isolator.

&Safeguard the system against

unauthorised reconnection.

!Please note

Electronic modules can be

damaged by electro-static dis-

charges.

Touch earthed objects, such as

heating or water pipes, to dis-

charge static loads.

Repair work

!Please note

Repairing components which

fulfil a safety function can com-

promise the safe operation of

your heating system.

Replace faulty components

only with original Viessmann

spare parts.

Ancillary components, spare and

wearing parts

!Please note

Spare and wearing parts which

have not been tested together

with the heating system can

compromise its function. Instal-

ling non-authorised compo-

nents and non-approved

modifications/conversion can

compromise safety and may

invalidate our warranty.

For replacements, use only ori-

ginal spare parts from

Viessmann or those which are

approved by Viessmann.

Safety instructions (cont.)

Safety instructions

5692 747 GB

Commissioning, inspection, maintenance

Steps - commissioning, inspection and maintenance................................... 5

Further details regarding the individual steps .............................................. 6

Parts list .................................................................................................... 12

Commissioning/service reports............................................................... 14

Specification............................................................................................. 15

Accessories

Accessory specification .............................................................................. 17

Certificates

Declaration of conformity ............................................................................ 18

Index

5692 747 GB

For further information regarding the individual steps, see the page indicated

Commissioning steps

Inspection steps

Maintenance steps Page

!!!



••• 1. Control principles................................................................. 6

•2. Filling the DHW cylinder..................................................... 6

•• 3. Inspection and maintenance ............................................ 7

•• 4. Shutting down the system

•• 5. Checking the function of all safety valves

•• 6. Testing the anode earth current with an anode

tester.......................................................................................... 7

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

•• 8. Checking and replacing the magnesium anode (if

required)................................................................................... 9

•• 9. Returning the DHW cylinder into use ............................ 10

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

Steps - commissioning, inspection and maintenance

Commissioning, inspection, maintenance

5692 747 GB

Control principles

Setting of ball valves

One ball valve each in the heating

water flow (solar) and in the heating

water return (solar) within the Solar-

Set:

&Laterally to the pipe run:

–open

&Acrossthepiperun:

–closed

&Diagonally 45 ° to the pipe run

–Check valve open

–The diagonal position 45 ° (clock-

wise or anti-clockwise) is only

required for filling and draining the

system.

Vitosol service instructions

Venting the heating water flow (solar) (HVs)

Ventingviatheairventvalveonthe

vent pot.

Adjusting the flow rate

Adjustment via flow meter on the

heating water return (solar).

Flushing &filling

Implementation via a flush & fill valve

on the heating water return (solar).

Note

Optional connection of a manual solar

fill pump (accessories for solar heat-

ing systems) to raise the pressure

after venting.

Filling the DHW cylinder

1. Fill the DHW cylinder from the

DHW side.

Note

When the DHW cylinder is pres-

surised, re-torque the flange lid

withatorqueof25Nm.

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 manufacturer's

instructions.

Further details regarding the individual steps

Commissioning, inspection, maintenance

5692 747 GB

Inspection and maintenance

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 accord-

ing to requirements.

Note

We additionally recommend that the

function of the magnesium anode is

checked annually. This function check

can be made without interrupting the

operation, by measuring the earth cur-

rent with an anode tester (see

page 7).

Testing the anode earth current with an anode tester

Further details regarding the individual steps (cont.)

Commissioning, inspection, maintenance

5692 747 GB

1. Remove lid Aand flange insula-

tion B.

2. Remove upper thermometer

sensor C.

3. Pull earth cable Eoff tab D.

4. Connect the tester in series

between earth cable Eand con-

nection tap D.

&The anode is OK if the indicated

current is > 0.3 mA.

&Visually inspect the anode, if the

current measures < 0.3 mA or if

there is no current at all (see

page 9).

Cleaning the inside of the DHW cylinder

1. Drain the DHW cylinder from the

DHW side.

2. Remove flange lid A.

Note

Thesystemcanonlybecleaned

via the upper flange aperture.

3. Disconnect the DHW cylinder from

the pipe system to prevent cleaning

agent and contamination from

entering the pipework.

4. Remove loose deposits with a high

pressure cleaner.

!Please note

Pointed objects or those

with sharp edges will

damage the internal cylinder

wall.

Only use plastic tools to

clean the inside.

Further details regarding the individual steps (cont.)

Commissioning, inspection, maintenance

5692 747 GB

5. Werecommendtoemployacon-

tractor to remove stubborn depos-

its. Use a chemical cleaning agent

to remove hard deposits that can-

notberemovedwithahighpres-

sure cleaner.*1.

!Please note

Cleaning agents containing

hydrochloric acid attack the

material of the DHW cylin-

der.

Never use such cleaning

agents.

Danger

Cleaning agent residues can

lead to poisoning.

Always observe the details

provided by the manufac-

turer of the cleaning agent.

6. Fully drain any cleaning agent.

7. Thoroughly flush the DHW cylin-

der after cleaning.

Checking and replacing the magnesium anode (if required)

Check the magnesium anode.

We recommend you replace the mag-

nesium anode if it has been reduced

down to 710-15 mm.

Note

A chain anode is available (upon

request) where space is restricted.

Further details regarding the individual steps (cont.)

Commissioning, inspection, maintenance

5692 747 GB

*1Manufacturer: Grünbeck Wasseraufbereiter GmbH, Industriestraße 1, D-89420 Höch-

städt

Returning the DHW cylinder into use

1. Reconnect the DHW cylinder to the

pipework.

2. Insert new gasket Aunderneath

flange lid B.

3. Remove the flange lid with earth

cable Cand tighten the screws

with a maximum torque of 25 Nm.

4. Push earth lead Conto tab D.

5. Fill the DHW cylinder from the

DHW side and then retighten the

flangelidwithatorqueof 25Nm.

6. Remove upper thermometer

sensor E.

Further details regarding the individual steps (cont.)

Commissioning, inspection, maintenance

5692 747 GB

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