Viessmann VITOCELL 100-V Quick guide

Installation and service instructions
for contractors
VIESMANN
Vitocell 100-V
Type CVAA, CVAB-A
DHW cylinders, 160 l to 300 l
Vitocell 100-W
Type CVAA, CVAB-A
DHW cylinders, 160 l to 300 l
VITOCELL 100-V
VITOCELL 100-W
6150608 GB 3/2020 Please keep safe.

2
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
Safety instructions
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3
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.)
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4
1. Information Disposal of packaging ............................................................................ 5
Symbols ................................................................................................. 5
Intended use .......................................................................................... 5
Product information ................................................................................ 6
■Vitocell 100-V/100-W, types CVAA, CVAB-A ...................................... 6
Inspection and maintenance .................................................................. 6
System examples .................................................................................. 6
Spare parts lists ..................................................................................... 6
2. Preparing for installation Unpacking and handling ........................................................................ 7
Connections ........................................................................................... 8
Siting information ................................................................................... 8
■Siting the DHW cylinder with immersion heater (300 l) ...................... 9
■Siting the DHW cylinder with heating lance (300 l) ............................. 9
3. Installation sequence DHW cylinders, 160 and 200 l ............................................................... 10
■Fitting the cylinder temperature sensor and thermometer sensor (if
supplied) ............................................................................................. 10
■Checking the anode connection, fitting the fascia and cover, affixing
the type plate ...................................................................................... 11
DHW cylinder, 300 l ............................................................................... 12
■Fitting the cylinder temperature sensor and thermometer sensor (if
supplied) ............................................................................................. 12
■Checking the anode connection, fitting the fascia and cover, affixing
the type plate ...................................................................................... 13
Preparing a multi cylinder bank ............................................................. 14
Connections on the heating water side .................................................. 15
Connections on the DHW side ............................................................... 15
■DHW circulation pipe for cylinder banks ............................................. 17
Connecting the equipotential bonding ................................................... 18
4. Commissioning, inspec-
tion, maintenance
Steps - commissioning, inspection and maintenance ............................ 19
5. Commissioning/service
reports
................................................................................................................ 23
6. Specification ................................................................................................................ 24
7. Disposal Final decommissioning and disposal ..................................................... 25
8. Certificates Declaration of conformity ....................................................................... 26
Index
Index
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5
Please dispose of packaging waste in line with statu-
tory regulations.
Symbols
Symbol Meaning
Reference to other document containing
further information
1.
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.
or
■Acoustic signal
■Fit new component.
or
■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.
Information
Disposal of packaging
6150608
Information

6
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
Vitocell 100-V/100-W, types CVAA, CVAB-A
Vertical DHW cylinder with internal indirect coil. Cylin-
der and internal indirect coil made from steel, corrosion
protection through Ceraprotect enamel coating and
protective magnesium anode. The DHW cylinders fea-
ture all-round thermal insulation enclosed within an
epoxy-coated sheet steel casing.
Suitable for systems conforming to DIN 1988,
EN 12828 and DIN 4753.
Vitocell 100-V: Vitosilver
Vitocell 100-W: White
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
We recommend checking the function of the protective
magnesium anode annually. This check can be carried
out without interrupting operation. The earth current is
tested with an anode tester (see page 20 20).
System examples
Available system examples: See www.viessmann-
schemes.com.
Spare parts lists
Information about spare parts can be found at
www.viessmann.com/etapp or in the Viessmann
spare part app.
Information
Intended use (cont.)
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Information

7
2.
1.
4x
5.
8.
9.
6.
7.
3.
4.
Fig. 1
Preparing for installation
Unpacking and handling
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Installation

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A
B
C
D
E
F
G
Fig. 2 160 to 200 l capacity
AProtective magnesium anode with earth cable
BDHW
CDHW circulation
DClamping device for cylinder temperature sensor
EHeating water flow
FHeating water return
GCold water and drain
A
B
C
D
E
F
G
Fig. 3 300 l capacity
AProtective magnesium anode with earth cable
BDHW
CDHW circulation
DSensor well for cylinder temperature sensor
EHeating water flow
FHeating water return
GCold water and drain
Siting information
!Please note
The thermal insulation must not come into con-
tact with naked flames.
Exercise caution when welding and brazing.
!Please note
To prevent material losses, site the DHW cylin-
der in a room free from the risk of frost and
draughts.
Alternatively, drain the DHW cylinder when not
in use and there is a risk of frost.
■Allow an adequate distance from the wall to enable
the temperature controller (if supplied) to be oper-
ated.
■Use the adjustable feet to level the DHW cylinder.
Note
Only use one or two of the adjustable feet to level the
DHW cylinder. At least one of the adjustable feet must
remain fully screwed in.
≤35
Fig. 4
Never extend the adjustable feet beyond a total length
of 35 mm.
Preparing for installation
Connections
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Installation

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Siting the DHW cylinder with immersion heater (300 l)
a
Fig. 5
Immersion heater installation instructions
Note
Maintain the minimum clearance.
Note
The unheated length of any threaded immersion
heater installed on site must be at least 100 mm.
The threaded immersion heater must be suitable for
installation in enamelled DHW cylinders.
Cylinder capacity Output of im-
mersion
heater
Dim. a
in mm
300 l 6 kW min. 685
Siting the DHW cylinder with heating lance (300 l)
585
Fig. 6
Preparing for installation
Siting information (cont.)
6150608
Installation

10
Fitting the cylinder temperature sensor and thermometer sensor (if supplied)
3.
4.
6.
1.
2.
5.
Fig. 7
1. Insert the cylinder temperature sensor as far as it
will go into the opening of the clamping device.
2. Hand-tighten the cylinder temperature sensor with
the screw provided. When doing so, hold the cylin-
der temperature sensor in place in the sensor ter-
minal until the screw is screwed in.
!Please note
Overtightening the fixing screw may damage
the cylinder temperature sensor.
Torque: Max. 2 Nm
4. Clamp the thermometer sensor in the clamping
bracket.
5. Guide the thermometer cable through the groove in
the thermal insulation and the hole in the sheet
steel casing.
6. Secure the thermometer (accessory) to the wall.
Installation instructions for wall thermometer
Installation sequence
DHW cylinders, 160 and 200 l
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Installation

11
Checking the anode connection, fitting the fascia and cover, affixing the type plate
1.
2.
A B
C
D
3.
Fig. 8
AProtective magnesium anode
BEarth cable
DType plate
Note
The recess C in the top cover is intended for the ther-
mometer cable.
Installation sequence
DHW cylinders, 160 and 200 l (cont.)
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Installation

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Fitting the cylinder temperature sensor and thermometer sensor (if supplied)
8.
2.
6.
5.
3.
4.
1.
7.
8.
Fig. 9
■Sensor retainer is supplied with the fascia.
■Secure the sensor on the outside of the sensor
retainer contact spring (not in the groove) so that it is
flush with the front of the spring.
■Never wrap insulating tape around the sensor.
■Insert the sensor retainer with sensor into the sensor
well as far as it will go.
■Insert the thermometer sensor as far as it will go into
the clamping bracket on the flange cover.
Installation sequence
DHW cylinder, 300 l
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Installation

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Checking the anode connection, fitting the fascia and cover, affixing the type plate
3.
4.
2.
A B
1.
Fig. 10
AProtective magnesium anode
BEarth cable
Note
Route the thermometer lead through the groove in the
EPS flange insulation.
Installation sequence
DHW cylinder, 300 l (cont.)
6150608
Installation

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300 l:
Dimensions of the connections of Viessmann headers (accessories)
Capacity per cylinder l 300
Number of cylinders 2
Connections
■Heating water flow and return DN 50
■Cold water, DHW R 1¼
DHW circulation R 1
Cylinder bank, 300 l
ZZ
HV
KW
HR
WW
ELV TR
EV
Fig. 11
ELV Air vent valve
EV Drain valve
HR Heating water return
HV Heating water flow
KW Cold water
TR Temperature controller
WW DHW
Z DHW circulation
Note
The "DHW" connection can also be made on the same
side as the heating water flow. The "cold water" con-
nection can be made on the same side as the heating
water return. This ensures that every cylinder is heated
and that water is drawn off from every cylinder equally.
Installation sequence
Preparing a multi cylinder bank
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Installation

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■Connect all pipework with detachable fittings.
■Seal any connections that are not required with red
brass caps.
■Adjust the temperature controller and high limit
safety cut-out so that the DHW temperature in the
DHW cylinder does not exceed 95 °C.
Individual cylinder Cylinder bank with Viessmann header
Permissible heating water flow tempera-
ture
160 °C 120 °C 160 °C
Permissible operating pressure
■Heating water side 25 bar
2.5 MPa
18 bar
1.8 MPa
16 bar
1.6 MPa
■DHW side 10 bar
1 MPa
10 bar
1 MPa
10 bar
1 MPa
Test pressure
■Heating water side 40 bar
4 MPa
■DHW side 16 bar
1.6 MPa
Permissible DHW temperature 95 °C
UP
HV
HR
STS
RV
Fig. 12
HR Heating water return
HV Heating water flow
RV Spring-loaded check valve
STS Cylinder temperature sensor or temperature con-
troller and high limit safety cut-out (if required).
UP Circulation pump
1. For heating water flow temperatures in excess of
95 °C and cylinder capacity from 160 to 300 l:
Remove the pipe collars from the pipe outlets on
the heating water side.
Note
Pipe collars have l.h. threads.
2. Install the heat supply control unit.
Note
One temperature controller in one of the cylinders
is sufficient for cylinder banks. A water temperature
controller may also be used instead of the temper-
ature controller.
3. Install the flow line with a rise and fit an air vent
valve at the highest point.
4. Only for heating water flow temperatures above
110 °C: If the system does not already have one,
also install a type-tested high limit safety cut-out.
For this, use a temperature limiter and high limit
safety cut-out (TR/STB).
Connections on the DHW side
■For connections on the DHW side, observe
DIN 1988 and DIN 4753.
■Connect all pipework with detachable fittings.
■Seal any connections that are not required with red
brass caps.
■Equip the DHW circulation pipe with a DHW circula-
tion pump, check valve and time switch.
■Connect the DHW circulation pump either to the
boiler control unit or via a time switch.
Installation sequence
Connections on the heating water side
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Installation

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Permissible operating
pressure 10 bar (1 MPa)
Test pressure 16 bar (1.6 MPa)
Permissible tempera-
ture 95 °C
L
P
S
TU
L R
L
M
N
O
P
L
R
E
H
G
F
A
A
D
B
C
K
Fig. 13
AInternal indirect coil for connection to the heat gen-
erator
BDiaphragm expansion vessel
CDrain
DDHW circulation pipe
EDHW
FSpring-loaded check valve
GDHW circulation pump
HVisible discharge pipe outlet point
KSafety valve
LShut-off valve
MFlow regulating valve
NPressure gauge connector
ONon-return valve
PDrain
RCold water
SDrinking water filter
TPressure reducer
UNon-return valve/pipe separator
Safety valve
The system must be equipped with a type-tested dia-
phragm safety valve as protection against overpres-
sure.
Permiss. operating pressure: 10 bar (1 MPa).
The connection diameter of the safety valve must be
as follows:
■For 160 and 200 l at least R ½ (DN 15); max. heat
input 75 kW
■Above 200 to 300 l at least R ¾ (DN 20); max. heat
input 150 kW
Select a safety valve with a higher rating if the heat
input of the DHW cylinder is greater than the maximum
heat input assigned to the capacity. (See DIN 4753-1,
issue 3/88, section 6.3.1).
Install the safety valve in the cold water line. Ensure it
cannot be shut off from the DHW cylinder. There must
be no constrictions in the pipework between the safety
valve and the DHW cylinder.
!Please note
Never seal off the safety valve discharge pipe.
The overpressure can damage the system.
Ensure that any expelled water is safely and
visibly drained into a drainage system.
Position a sign close to the safety valve dis-
charge pipe, or ideally on the safety valve itself,
with the following inscription: "For safety rea-
sons, water may be discharged from the dis-
charge pipe during heating! Never seal."
Install the safety valve above the top edge of the DHW
cylinder.
Installation sequence
Connections on the DHW side (cont.)
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Installation

17
DHW circulation pipe for cylinder banks
Note
Always implement the cylinder banks with connected
DHW circulation.
Connect the DHW circulation pipe when linking several
cylinders in conjunction with boilers or district heating
systems without a heating water return temperature
limiting facility and a DHW circulation pipe:
A
WW
KW
Z
ZP
Fig. 14
ASpring-loaded check valve
KW Cold water
WW DHW
Z DHW circulation pipe
ZP DHW circulation pump
Connect the DHW circulation pipe when connecting
several cylinders in conjunction with district heating
systems with a heating water return temperature limit-
ing facility and/or several DHW circulation pipes:
WW
KW
ZP
Z
ZP
A
A
Fig. 15
ASpring-loaded check valve
KW Cold water
WW DHW
Z DHW circulation pipe
ZP DHW circulation pump
Installation sequence
Connections on the DHW side (cont.)
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Installation

18
Connect the equipotential bonding in accordance with
the requirements stipulated by your local power supply
utility and VDE [or local] regulations.
CH: Connect the equipotential bonding in accordance
with the technical requirements stipulated by your local
power supply utility and SEV regulations.
Installation sequence
Connecting the equipotential bonding
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Installation

19
Commissioning steps
Inspection steps
Maintenance steps Page
•1. Filling the DHW cylinder...................................................................................................... 20
• • 2. Shutting down the system
••• 3. Checking the safety valve function
• • 4. Checking the anode earth current with an anode tester.................................................. 20
• • 5. Cleaning the inside of the DHW cylinder........................................................................... 21
• • 6. Checking and replacing the protective magnesium anode.............................................. 21
••• 7. Commissioning the DHW cylinder...................................................................................... 22
••• 8. Checking the connections on the water side for tightness
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance
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20
1. Fill the DHW cylinder on the DHW side.
Note
If the DHW cylinder is pressurised, retighten the
flange cover with a torque of 25 Nm.
2. Check the fittings for leaks on the heating water
and DHW sides, and at the immersion heater or
heating lance (if installed), and retighten 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
Checking the anode earth current with an anode tester
Checking the anode earth current
EDC
300 l
A
B
Fig. 16
1. Remove top cover A (300 l version with screw)
and thermal insulation (fleece or EPS flange insu-
lation) B. Remove the thermometer sensor (if fit-
ted).
2. Disconnect earth cable C from tab D.
3. Connect tester in series across tab D and earth
cable C:
■Current > 0.3 mA:
Protective magnesium anode is in working order.
■Current < 0.3 mA:
Visual inspection of the protective magnesium
anode
(see page 21).
Commissioning, inspection, maintenance
Filling the DHW cylinder
6150608