Viessmann VITOCELL 300B Bedienungsanleitung
Installation instructions
for contractors
VIESMANN
Vitocell 300-B
Type EVBA-A
Dual mode DHW cylinder, 300 and 500 l
VITOCELL 300-B
5791 772 GB 1/2017 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 772 GB
3
1. Information Disposal of packaging ............................................................................ 4
Symbols ................................................................................................. 4
Intended use .......................................................................................... 5
Product information ................................................................................ 5
2. Preparing for installation Connections ........................................................................................... 6
Siting information ................................................................................... 6
■Siting the DHW cylinder with immersion heater ................................. 7
3. Installation sequence 300 l capacity ......................................................................................... 8
■Installing leads for the thermometer sensor and temperature control-
ler sensor ............................................................................................ 8
■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
Fitting the cylinder temperature sensor for solar operation ................... 15
Connections on the heating water side .................................................. 15
■Heating DHW by solar collectors ........................................................ 17
■Heating DHW by a heat pump ............................................................ 18
Connections on the DHW side ............................................................... 19
■Safety valve ........................................................................................ 19
Connecting the equipotential bonding ................................................... 20
Commissioning ...................................................................................... 20
4. Specification ................................................................................................................ 21
Index
5791 772 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 772 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 solar thermal sys-
tems, floorstanding and wall mounted boilers and/or
heat pumps for dual mode operation.
■Capacity: 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 772 GB
6
A
B
C
EF
K
L
G
D
H
Fig. 1 300 litres
ATemperature controller (upper indirect coil)
(below the thermal insulation)
BCylinder temperature sensor and safety limiter
(below the thermal insulation)
CDHW
DHeating water flow*1 (upper indirect coil)
EDHW circulation
FHeating water return (upper indirect coil)
GCylinder temperature sensor or temperature con-
troller and thermometer sensor (lower indirect
coil)*2
HHeating water flow*3 (lower indirect coil)
KHeating water return and cylinder temperature
sensor for solar operation*2*3
LCold water
A
D
G
H
K
F
B
C
E
Fig. 2 500 litres
ADHW
BClamp (behind the thermal insulation) for cylinder
temperature sensor or temperature controller
(upper indirect coil)
CHeating water flow*1 (upper indirect coil)
DDHW circulation
EHeating water return (upper indirect coil)
FClamp (behind the thermal insulation) for cylinder
temperature sensor or temperature controller and
thermometer sensor (lower indirect coil)*2
GHeating water flow*3 (lower indirect coil)
HHeating water return and cylinder temperature
sensor for solar operation*2*3
KCold water
Cylinder capaci-
ty
Maximum connectable heat
pump output (upper and lower
indirect coils linked in series):
300 l 12 kW
500 l 15 kW
Siting information
!Please note
The thermal insulation must not come into con-
tact with naked flames.
Exercise caution when welding and brazing.
*1 The upper indirect coil is designed for connection to a boiler.
*2 Recommended positioning of the cylinder temperature sensor for solar operation:
With threaded elbow (accessories) in the heating water return.
*3 The lower indirect coil is designed for connection to solar collectors.
Connections
5791 772 GB
7
!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.
■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.
Siting 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.
Siting information (cont.)
5791 772 GB
8
Installing leads for the thermometer sensor and temperature controller sensor
2.
8.
C
8.
2.
3.
4.
5.
6.
B
7.
1.
A
Fig. 4
AType plate
1. Remove top panel, thermal insulation, and parts for
flange cover installation.
2. Route the sensor lead of the lower thermometer
downwards through the opening in the thermal
insulation and the cable channel.
3. Push the sensor lead through the strain relief
sleeve and route to the sensor well.
4. Fit the strain relief sleeve to the sensor well.
5. Push the cylinder temperature sensor into the sen-
sor well as far as it will go.
Note
Never wrap insulating tape around the sensor.
6. Secure sensor lead with strain relief sleeve.
7. 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
clamping bracket, and secure with wing screw.
8. Remount the flange insulation and top panel.
300 l capacity
5791 772 GB
9
9. Affix type plate C.
Installing the sensor well and the cylinder temperature sensor
Note
The sensor retainer is in the sensor well.
4.
2.
3.
1.
Fig. 5
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.
300 l capacity (cont.)
5791 772 GB
10
Fitting the flange cover
2.
1.
Fig. 6
300 l capacity (cont.)
5791 772 GB
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