Viessmann VITOCELL 100-V User manual

Installation instructions
for contractors
VIESMANN
Vitocell 100-V
Type CVA, CVAA, CVAA-A
DHW cylinder, 160 to 950 l
Vitocell 100-W
Type CVA, CVAA, CVAA-A
DHW cylinder, 160 to 300 l
VITOCELL 100-V
VITOCELL 100-W
5813557 GB 8/2018 Dispose after installation.

2
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
■All relevant safety regulations as defined by DIN, EN,
DVGW, VDE and locally applicable standards
aÖNORM, EN and ÖVE
cSEV, SUVA, SVTI, SWKI and SVGW
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.
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
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1. Information Disposal of packaging ............................................................................ 4
Symbols ................................................................................................. 4
Intended use .......................................................................................... 5
Product information ................................................................................ 5
2. Installation information Preparing for installation ........................................................................ 6
■Connections ........................................................................................ 6
■Siting information ................................................................................ 6
3. Installation sequence Siting DHW cylinders (up to 300 l) ......................................................... 8
■Fitting the cylinder temperature sensor and thermometer sensor (if
supplied) ............................................................................................. 8
■Checking the anode connection, fitting the fascia and cover, affixing
the type plate ...................................................................................... 9
Siting DHW cylinders (500 l) .................................................................. 10
■Fitting the thermal insulation and checking the anode connection ..... 10
Siting DHW cylinders (750 to 950 l) ....................................................... 11
■Siting the DHW cylinder and checking the anode connection ............ 11
■Fitting the thermometer sensor (if supplied) and cylinder tempera-
ture sensor .......................................................................................... 12
Thermal insulation (500 to 950 l) ........................................................... 13
■Fitting the thermal insulation jacket .................................................... 13
■Fitting the thermometer (if supplied), thermometer sensor and cover
strips ................................................................................................... 14
■Fitting the cover .................................................................................. 15
500 l DHW cylinders .............................................................................. 16
■Fitting the cylinder temperature sensor or temperature controller ...... 16
Preparing a multi cylinder bank ............................................................. 16
Connections on the heating water side .................................................. 17
Connections on the DHW side ............................................................... 18
■DHW circulation pipe for cylinder banks ............................................. 19
Connecting the equipotential bonding ................................................... 20
Commissioning ...................................................................................... 20
4. Specification ................................................................................................................ 21
Index
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Please dispose of packaging waste in line with statu-
tory regulations.
DE: Use the disposal system organised by
Viessmann.
AT: Use the ARA statutory disposal system (Altstoff
Recycling Austria AG, licence number 5766).
CH: Packaging waste is disposed of by the HVAC
contractor.
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.
Disposal of packaging
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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.
Product information
Enamelled DHW cylinder with internal indirect coil for
DHW heating in conjunction with floorstanding boilers,
wall mounted boilers and/or immersion heaters (300 to
950 l capacity).
■For cylinder capacity and weight, see page 21.
■Suitable for systems conforming to DIN 1988,
EN 12828 and DIN 4753.
Intended use
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Connections
A
B
C
D
E
F
G
Fig. 1 160 to 500 l capacity
AMagnesium anode with earth cable
BDHW
CDHW circulation
DCylinder temperature sensor
EHeating water flow
FHeating water return
GCold water and drain outlet
A
B
C
D
E
F
G
Fig. 2 750 and 950 l capacity
ADHW
BMagnesium anode with earth cable
CDHW circulation
DHeating water flow
EClamping device for cylinder temperature sensor
FHeating water return
GCold water and drain outlet
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.
■750 and 950 l capacity:
For replacing the magnesium anodes, ensure a
clearance of at least 850 mm in front of the DHW
cylinder.
■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
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Siting 300 l or larger DHW cylinders with immersion heater
a
Fig. 3
Immersion heater installation instructions
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
500 l 6 kW min. 650
750 l, 950 l 6 kW min. 650
750 l, 950 l 12 kW min. 950
Siting 300 l DHW cylinders with heating lance
585
Fig. 4
Preparing for installation (cont.)
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Fitting the cylinder temperature sensor and thermometer sensor (if supplied)
8.
2.
6.
5.
3.
4.
1.
7.
8.
Fig. 5
■300 l: 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 together with the sensor as
far as they will go into the sensor well.
■Insert the thermometer sensor as far as it will go into
the clamping bracket on the flange cover.
Siting DHW cylinders (up to 300 l)
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Checking the anode connection, fitting the fascia and cover, affixing the type plate
3.
4.
2.
A B
1.
Fig. 6
AMagnesium anode
BEarth cable
Note
Guide the thermometer lead through the groove in the
flange insulation.
Siting DHW cylinders (up to 300 l) (cont.)
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Fitting the thermal insulation and checking the anode connection
2.
A B
3.
1.
Fig. 7
AMagnesium anode
BEarth cable
Siting DHW cylinders (500 l)
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Siting the DHW cylinder and checking the anode connection
1.
A
3.
3x
2.
A
B
B
A
Fig. 8
AMagnesium anode
BEarth cable
Note
Check that the earth cable is connected to the magne-
sium anode.
■Insert the adjustable feet into the legs as far as they
will go and use them to level the DHW cylinder.
■Never extend the adjustable feet beyond a total
length of 35 mm.
Siting DHW cylinders (750 to 950 l)
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Fitting the thermometer sensor (if supplied) and cylinder temperature sensor
1.
3.
B
4.
6.
5.
7.
2.
A
Fig. 9
AThermometer (part of standard delivery)
1. Guide the thermometer sensor through the cover
strip and insert the thermometer.
Note
If no thermometer is being installed, seal the hole
with a cover (pipe collar).
2. Guide the thermometer sensor through the lifting
eye and insert it as far as it will go into the clamp-
ing bracket on the flange.
Note
The cover strip is held in its vertical position by the
unwound capillaries. This is necessary for the rest
of the installation.
3. Route the cylinder temperature sensor to the back
of the DHW cylinder.
4. Release the nuts.
5. Push the clamping device onto the threaded studs
and align.
6. Tighten the nuts.
7. Push the cylinder temperature sensor as far as it
will go into clamping device B.
Note
Never wrap insulating tape around the sensors.
Siting DHW cylinders (750 to 950 l) (cont.)
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Fitting the thermal insulation jacket
1. 6x
2.
6x
4. 6x
3.
6x
Fig. 10
Note
■Ensure that no fleece remnants enter the DHW cylin-
der through the cylinder connections.
■This work requires 2 people.
1. At the back of the cylinder: Attach 6 clip fasteners
to the edges of the right and left sections of the
thermal insulation jacket and place it around the
cylinder body.
Note
Leave the clip fasteners in the first notch.
2. At the front of the cylinder: Attach 6 clip fasteners
to the edges of the right and left sections of the
thermal insulation jacket.
3. Push the clip fasteners at the back of the cylinder
as close together as possible.
4. Push the clip fasteners at the front of the cylinder
as close together as possible.
Thermal insulation (500 to 950 l)
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Fitting the thermometer (if supplied), thermometer sensor and cover strips
A
7.
1.
5.
6.
3.
2.
4.
Fig. 11
AType plate (self-adhesive)
1. Fit the thermal insulation jacket evenly around the
cylinder body by patting it.
2. For 500 l: Guide the thermometer lead through the
front cover strip and thermal insulation jacket.
Note
If no thermometer is being installed, seal the hole
with a cover (pipe collar).
3. For 500 l: Insert the thermometer sensor as far as
it will go into the clamping bracket.
4. Fit the flange cover.
5. Fit the front cover strip.
6. Fit the back cover strip.
7. Affix the type plate.
Thermal insulation (500 to 950 l) (cont.)
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Fitting the cover
1.
2.
A
3.
Fig. 12
AViessmann logo
Thermal insulation (500 to 950 l) (cont.)
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Fitting the cylinder temperature sensor or temperature controller
4.
1.
2.
3.
Fig. 13
■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.
Preparing a multi cylinder bank
300 and 500 l:
Dimensions of the connections of Viessmann headers (accessories)
Capacity per cylinder l 300 500
Number of cylinders 2 2 3
Connections
■Heating water flow and return DN 50 50 50
■Cold water, DHW R 1¼1¼1½
DHW circulation R 1 1 1
500 l DHW cylinders
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300 and 500 l cylinder bank
ZZZ
HV
KW
HR
WW
ELV TR
EV
Fig. 14
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
750 and 950 l:
Install headers on site.
■Install the temperature controller in the final cylinder,
as viewed from the heating water flow.
■Connect the cold water supply opposite the DHW
connection.
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.
Connections on the heating water side
■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
Preparing a multi cylinder bank (cont.)
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UP
HV
HR
STS
RV
Fig. 15
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).
From 750 l: To left of heating water flow when
seen from connection side
UP Circulation pump
1. In the case of heating water flow temperatures in
excess of 95 °C and cylinder capacity from 160 to
300 l: Remove the pipe collars from the pipe out-
lets 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 TR/STB (temperature limiter and
high limit safety cut-out).
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.
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. 16
AInternal indirect coil for connection to the heat gen-
erator
BDiaphragm expansion vessel
CDrain outlet
DDHW circulation pipe
EDHW
FSpring-loaded check valve
GDHW circulation pump
HVisible discharge pipe outlet point (tundish)
KSafety valve
LShut-off valve
MFlow regulating valve
Connections on the heating water side (cont.)
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NPressure gauge connection
ONon-return valve
PDrain outlet
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 1000 l at least R ¾ (DN 20); max. heat
input 150 kW
■Above 1000 to 5000 l at least R 1 (DN 25); max. heat
input 250 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. Never seal off the safety
valve discharge pipe. Ensure that any expelled water
is safely and visibly drained into a drainage system.
Position a sign close to the safety valve discharge
pipe, or ideally on the safety valve itself, with the fol-
lowing inscription: "For safety reasons, water may be
discharged from the discharge pipe during heating.
Never seal." Install the safety valve above the top edge
of the DHW cylinder.
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:
WW
KW
Z
ZP
Fig. 17
ASpring-loaded check valve
KW Cold water
WW DHW
Z DHW circulation pipe
CP DHW circulation pump
Connections on the DHW side (cont.)
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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. 18
ASpring-loaded check valve
KW Cold water
WW DHW
Z DHW circulation pipe
CP DHW circulation pump
Connecting the equipotential bonding
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.
Commissioning
Service instructions
Connections on the DHW side (cont.)
5813557