Viessmann VITOCELL 300W User manual

Installation instructions
for contractors
VIESMANN
Vitocell 300-V/W
Type EVIA-A
DHW cylinder with internal indirect coil
160 to 500 l
VITOCELL 300-V/W
5791 762 GB 3/2017 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
5791 762 GB

3
1. Information Disposal of packaging ............................................................................ 4
Symbols ................................................................................................. 4
Intended use .......................................................................................... 5
Product information ................................................................................ 5
2. Preparing for installation Connections ........................................................................................... 6
Information on transport and siting ........................................................ 6
■300 and 500 l capacity: Setting up the DHW cylinder with immersion
heater ................................................................................................. 7
3. Installation sequence 160, 200, 300 l capacity ......................................................................... 8
■Installing the temperature controller sensor ....................................... 8
Affixing the type plate ............................................................................ 9
300 l capacity ......................................................................................... 9
■Installing the sensor well and the cylinder temperature sensor .......... 9
■Fitting the flange cover ....................................................................... 10
500 l capacity ......................................................................................... 11
■Siting the DHW cylinder and fitting the thermal insulation mat at the
bottom ................................................................................................. 11
■Fitting the thermometer sensor (if supplied) and cylinder tempera-
ture sensor .......................................................................................... 12
■Fitting the thermal insulation jacket .................................................... 13
■Fitting the cover strips ........................................................................ 14
■Fitting the cover .................................................................................. 15
Connections on the heating water side .................................................. 15
Connections on the DHW side ............................................................... 16
■Safety valve ........................................................................................ 17
■Connecting the DHW circulation pipe for cylinder banks .................... 17
Connecting the equipotential bonding ................................................... 19
Commissioning ...................................................................................... 19
4. Specification ................................................................................................................ 20
Index
5791 762 GB

4
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
5791 762 GB

5
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
Stainless steel DHW cylinder with internal indirect coil
for DHW heating in conjunction with floorstanding and
wall mounted boilers.
■Capacity: 160, 200, 300 and 500 l
■300 and 500 l: An immersion heater can be used.
■Suitable for systems conforming to DIN 1988,
EN 12828 and DIN 4753
Intended use
5791 762 GB

6
C
D
F
G
H
E
A
B
Fig. 1 160, 200, 300 litres
ACylinder temperature sensor (160 and 200 l, below
the thermal insulation)
BHigh limit safety cut-out (below the thermal insula-
tion)
CDHW
DDHW circulation
ECylinder temperature sensor or temperature con-
troller (300 l)
FHeating water flow
GHeating water return
HCold water
A
B
D
E
F
C
Fig. 2 500 litres
ADHW
BDHW circulation
CClamp (behind the thermal insulation) for cylinder
temperature sensor or temperature controller
DHeating water flow
EHeating water return
FCold water
Information on transport and siting
Note
■Use a transport aid (accessories).
■Transport the appliance with a sufficient number of
persons. Note the weight of the cylinder (see
page 20).
!Please note
To prevent material losses, install the DHW cyl-
inder in a room free from draughts and risk of
frost.
When not in use, the DHW cylinder must be
drained if there is a risk of frost.
!Please note
The thermal insulation must not come into con-
tact with naked flames.
Exercise caution when welding and brazing.
■Minimum wall clearance: 500 mm.
■Provide adequate clearance from the wall to allow for
operation of the temperature controller (if installed).
■Use the adjustable feet to level the DHW cylinder.
Note
Never extend the adjustable feet beyond a total length
of 35 mm.
Connections
5791 762 GB

7
300 and 500 l capacity: Setting up the DHW cylinder with immersion heater
a
Fig. 3
Immersion heater installation instructions
Maintain the minimum clearance.
Cylinder capacity Dim. a
300 l 730 mm
500 l 670 mm
Note
The unheated length of any threaded immersion
heater installed on site must be at least 100 mm.
Information on transport and siting (cont.)
5791 762 GB

8
Installing the temperature controller sensor
7.
2.
3.
4.
5.
1.
A
B
6.
Fig. 4
Note for cylinders with 300 l capacity
Following step 1, remove the parts for flange cover
installation.
Note on steps 2 to 5
For 160 and 200 l capacities only.
Note on step 6
If a high limit safety cut-out is installed:
■Cut out opening A on flange insulation.
■Push high limit safety cut-out sensor B into clamp-
ing bracket, and secure with wing screw.
160, 200, 300 l capacity
5791 762 GB

9
A
Fig. 5
AType plate
300 l capacity
Installing the sensor well and the cylinder temperature sensor
Note
The sensor retainer is in the sensor well.
4.
2.
3.
1.
Fig. 6
1. Extract the sensor retainer.
2. Fit the sensor to the outside of the sensor retainer
contact spring (not in the groove).
Note
■The sensor must sit flush with the front of the
spring.
■Never wrap insulating tape around the sensor.
3. Insert the sensor retainer with sensor into the sen-
sor well as far as it will go.
Affixing the type plate
5791 762 GB

10
Fitting the flange cover
2.
1.
Fig. 7
300 l capacity (cont.)
5791 762 GB

11
Siting the DHW cylinder and fitting the thermal insulation mat at the bottom
1.
A
2.
Fig. 8
AType plate
500 l capacity
5791 762 GB

12
Fitting the thermometer sensor (if supplied) and cylinder temperature sensor
1.
4.
3.
2.
A
5.
7.
6.
8.
Fig. 9
1. Guide the thermometer sensor through the cover
strip and insert the thermometer.
Note
The cover strip is held in its vertical position by the
straight capillaries. This is necessary for the rest of
the installation.
2. Insert the upper thermometer sensor as far as it
will go into the hole in the cylinder cap.
3. Use clips to secure the thermometer sensor
against being pulled out.
4. Route the bottom thermometer sensor capillaries
to the back of the cylinder body.
5. Screw the nuts onto the threaded studs. Do not
tighten.
6. Slot the clamps onto the threaded studs and align.
7. Tighten the nuts.
8. Depending on where the sensor is being fitted:
Insert the thermometer sensors and cylinder
temperature sensors into clamp A as far as they
will go.
Note
■Never wrap insulating tape around the sensors.
■When the thermal insulation is being fitted, the
cylinder temperature sensor leads are routed
outwards through the apertures (slots) in the rear
cover strip.
500 l capacity (cont.)
5791 762 GB

13
Fitting the thermal insulation jacket
Note
■Ensure that no fleece remnants enter the DHW cylin-
der through the cylinder connections.
■2 people are required for the following work.
1. 6x
2.
6x
4. 6x
6x 3.
Fig. 10
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. Place the thermal insula-
tion jacket 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.
500 l capacity (cont.)
5791 762 GB

14
Fitting the cover strips
A
4.
1.
3.
2.
Fig. 11
ADHW cylinder type plate
1. Fit the thermal insulation jacket evenly around the
cylinder body by patting it.
2. Mount the front cover strip and flange cover.
3. Fit the rear cover strip.
4. Affix the type plate.
500 l capacity (cont.)
5791 762 GB

15
Fitting the cover
A
1.
2.
Fig. 12
ACap with Viessmann logo
Note
The soft side of the thermal insulation must rest
against the cylinder body.
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.
■For 160, 200 and 300 l and heating water flow tem-
peratures above 95 °C:
Remove the pipe collars from the pipe outlets on the
heating water side (pipe collars have l.h. threads).
!Please note
The internal indirect coil is installed with gas-
kets.
■Temperatures > 150 °C at the connections will
damage the gaskets.
Maintain a safe distance when soldering and
welding.
■Realigning the connector will damage the gas-
kets.
Individual cylinder
Permissible temperature 160 °C
Permissible operating
pressure
10 bar (1.0 MPa)
Test pressure 16 bar (1.6 MPa)
500 l capacity (cont.)
5791 762 GB

16
KW
WW
4
1
2
35
Fig. 13
1Heating water return
2Heating water flow
3Spring-loaded check valve
4Cylinder temperature sensor or temperature con-
troller and high limit safety cut-out (if required)
5Circulation pump
KW Cold water
WW DHW
1. Install the heat supply control unit.
2. Install the flow line with a rise and fit an air vent
valve at the highest point.
3. Only for heating water flow temperatures in excess
of 110 °C:
Install an additional type-tested high limit safety
cut-out if the system does not already have one.
For this, use a TR/HLSC combination device (tem-
perature limiter and high limit safety cut-out).
Note
For connections, see page 6.
Connections on the DHW side
■For connections on the DHW side, observe
DIN 1988 and DIN 4753.
c: SVGW regulations
■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.
!Please note
The internal indirect coil is installed with gas-
kets.
■Temperatures > 150 °C at the connections will
damage the gaskets.
Maintain a safe distance when soldering and
welding.
■Realigning the connector will damage the gas-
kets.
Permissible temperature 95 °C
Permissible operating
pressure 10 bar (1 MPa)
Test pressure 16 bar (1.6 MPa)
Connections on the heating water side (cont.)
5791 762 GB

17
EG
D
C
A
B
KNL TSO
P
K R K POMK
H
F
Fig. 14
AExpansion vessel
BDrain outlet
CDHW circulation pipe
DDHW
ESpring-loaded check valve
FDHW circulation pump
GVisible discharge pipe outlet point (tundish)
HSafety valve
KShut-off valve
LFlow regulating valve
MPressure gauge connection
NNon-return valve
ODrain outlet
PCold water
RDrinking water filter
SPressure reducer
TNon-return valve/pipe separator
Safety valve
The system must be equipped with a type-tested dia-
phragm safety valve as protection against overpres-
sure.
Permissible operating pressure: 10 bar (1 MPa).
Diameter of safety valve connection:
■For 160 and 200 l cylinder capacity: R ½ (DN 15),
max. heat input 75 kW
■For 300 l to 1000 l cylinder capacity: R ¾ (DN 20),
max. heat input 150 kW
■For 1000 l to 5000 l cylinder capacity: R 1 (DN 25),
max. heat input 250 kW
If the heat input of the DHW cylinder exceeds the max-
imum heat input associated with the respective
capacity, select a sufficiently capable safety valve for
the heat input (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 following 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.
Connecting the DHW circulation pipe for cylinder banks
Note
Always install cylinder banks with connected DHW cir-
culation.
Connections on the DHW side (cont.)
5791 762 GB

18
Notes on the diagrams below
■Headers D for DHW must be approved for drinking
water.
■Install the temperature controller in the final cylinder,
as viewed from the heating water flow.
■The "DHW" connection can, contrary to the dia-
grams, also be connected on the same side as the
heating water flow, and the "cold water" connection
can be implemented on the same side as the heating
water return. This ensures that every cylinder is
heated and that water is drawn off from every cylin-
der equally.
In conjunction with boilers or district heating systems without heating water return temperature limiting
facility and a DHW circulation pipe
C
Z
HV
D
E
E
D
Z Z
ELV
TR
HR
B
A
EV
WW
KW
Fig. 15
ADHW circulation pipe
BDHW circulation pump
CSpring-loaded check valve
DHeader on the DHW side (stainless steel)
EHeader on the heating water side (steel)
ELV Air vent valve
EV Drain valve
HR Heating water return
HV Heating water flow
KW Cold water
WW DHW
TR Temperature controller
Z DHW circulation
In conjunction with district heating systems with a return temperature limiting facility on the heating
water side and/or in conjunction with several DHW circulation pipes
WW
KW
C
HV ELV
TR
HR
EV
B
AD
E
E
D
Z Z Z
Fig. 16
ADHW circulation pipe
BDHW circulation pump
CSpring-loaded check valve
DHeader on the DHW side (stainless steel)
EHeader on the heating water side (steel)
ELV Air vent valve
EV Drain valve
HR Heating water return
HV Heating water flow
KW Cold water
WW DHW
Connections on the DHW side (cont.)
5791 762 GB

19
TR Temperature controller
Z DHW circulation
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.)
5791 762 GB

20
Cylinder capacity l 160 200 300 500
DIN registration number Applied for
Standby heat loss kWh/24
h
0.90 0.91 1.06 1.37
Dimensions
Length (Ø) a
■Incl. thermal insulation mm 581 581 667 1022
■Excl. thermal insulation mm – – – 715
Width b
■Incl. thermal insulation mm 605 605 744 1084
■Excl. thermal insulation mm – – – 954
Height d
■Incl. thermal insulation mm 1189 1409 1734 1852
■Excl. thermal insulation mm – – – 1667
Height when tilted
■Incl. thermal insulation mm 1260 1460 1825 –
■Excl. thermal insulation mm – – – 1690
Weight incl. thermal insulation kg 59.3 70.0 104.5 110.1
Connections (male thread)
Heating water flow and return G ¾ ¾ 1 1
Cold water, DHW G ¾ ¾ 1 1¼
DHW circulation G ¾ ¾ 1 1
Viessmann Limited
Hortonwood 30, Telford
Shropshire, TF1 7YP, GB
Telephone: [phone]
Fax: [phone]
E-mail: [email protected]
Viessmann Werke GmbH & Co. KG
D-35107 Allendorf
Telephone: [phone]
Fax: [phone]
www.viessmann.com
5791 762 GB Subject to technical modifications.
Specification