Viessmann VITOCELL 100-U User manual

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.

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
■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
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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
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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.
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
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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.)
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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
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Solar-Set fixings
2.
1.
Fig. 2
Insert the supplied screws together with washers
(h = 3 mm) approx. half way into the DHW cylinder.
Fitting the Solar-Set
3x
1.
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
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Lower heating water connections (solar)
Note
If a heat meter is installed, continue to page 9
1.
2.
B
A
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.
1.
3.
2.
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)
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Heat meter (if installed)
1.
2.
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.)
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2.
1.
1.
2.
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.)
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