Viessmann Vitocell 200 Cylinder User guide

Design, Installation,
User & Servicing
Instructions
An unvented hot water storage
appliance complying with the
requirements of Building Regulations
Approved Document G3 and
manufactured in accordance with
BS EN 12897, the specication for
unvented water storage vessels.
In the interest of continuously
improving the Vitocell 200 Cylinder
range, Viessmann reserve the right to
modify the product without notice, and
in these circumstances this booklet,
which is accurate at the time of printing,
should be disregarded.

Page 2
Section Page
DESIGN
Description 3
Technical Data 6
System Details 8
INSTALLATION
Installation 10
Commissioning 20
USER INSTRUCTIONS 21
SERVICING
Servicing and Maintenance 22
Fault Finding 23
Spare Parts List 26
ADDENDIX
Addendix A 27
Addendix B 28
Notes 29
BENCHMARK
Commissioning Checklist 30
Service Record 31
ISSUE 22: JANUARY 2016
These instructions should be read in conjunction with the installation/servicing
instructions issued by the manufacturer of the heat source being used.
Any installation must be in accordance with the relevant requirements of the Gas
Safety Regulations, Building Regulations, I.E.E. Wiring Regulations and the Water Fitting
Regulations (England and Wales) or Water Byelaws (Scotland). It should be read in
accordance with the relevant recommendations of the following:
BS 6798; BS EN 12828, BS EN 12831, BS EN 14336; BS 5546;
BS 5440:1; BS 5440:2; CP 331:3
BS EN 806-1 to 5, BS EN 8558:2011: BS EN 1458-1:2011 and BS 7593:2006
Viessmann Vitocell 200 Cylinder is covered by Section G3 of the Building Regulations
(England and Wales) Technical Standard P3 (Scotland) and Building Regulation P5
(Northern Ireland. Compliance can be achieved via a Competent Person Self Certication
Scheme or noticaton of installation to the Local Authority Building Control Department.
It must be installed by a competent person as dened by the relevant regulations.
Manufacturers notes must NOT be taken as over-riding statutory obligations.
This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge unless
they have been given supervision or instruction concerning use of the appliance by
a person responsible for their safety. Children should be supervised at all times to
ensure they do not play with the appliance.
This information is provided to assist generally in the selection of equipment.
Responsibility for selection and specication of our equipment must however remain
that of our customer and any experts or consultants concerned with the installation(s).
Please note: that we do not therefore accept any responsibility for matters of design
selection or specication, for the eectiveness of an installation or system containing
one of our products unless specically requested to do so in writing.
All goods are sold subject to our conditions of sale which are set out at the rear of this
specication. In the interest of continuously improving the Viessmann Vitocell 200
Cylinder range, Viessmann Limited reserve the right to modify the product without
notice, and in these circumstances this booklet, which is accurate at the time of printing,
should be disregarded. An updated set of instructions will be produced and supplied
with new appliances and will be made available for other appliances on request.
This product is approved by Advantica where it is sold as a package with a
Viessmann boiler.
ViessmannVitocell 200 cylinders are produced under an ISO 9001:2008 Quality
Management System approved by BSI.
Benchmark places responsibilities on both manufacturers and installers.The purpose is to
ensure that customers are provided with the correct equipment for their needs, that it is
installed, commissioned and serviced in accordance with the manufacturers instructions
by competent persons and that it meets the requirements of the appropriate Building
Regulations. The Benchmark Checklist can be used to demonstrate compliance with
Building Regulations and should be provided to the customer for future reference.
Installers are required to carry out installation, commissioning and servicing work in
accordance with the Benchmark Code of Practice which is available from the Heating
and Hot Water Industry Council who manage and promote the Scheme. Visit www.
centralheating.co.uk for more information.
CONTENTS

Page 3
DESCRIPTION
DESIGN
Supplied By: Viessmann Ltd
Maximum inlet pressure to
Pressure reducing valve 12 bar
Operating pressure (PRV setting) 3 bar
Expansion vessel charge pressure 3 bar
Expansion relief valve setting 4.5 bar
Opening pressure of P & T Relief Valve 6 bar
Opening temperature of P & T Relief Valve 92-95°C
Energy cut-out thermostat setting 85°C
Max. working pressure - Primary heat exchanger (Indirect models) 6 bar
Max. working pressure - Solar heat exchanger (Solar models) 10 bar
Immersion heater rating 3kW, 240V AC
All cylinders are manufactured in accordance with the requirements of BS EN 12897
The tundish must be positioned so that it is visible to the occupant and is away from
electrical devices.
Components supplied with Viessmann Vitocell 200 cylinders
• Cold water inlet PRV combination valve/expansion relief
• Pressure and temperature relief valve
• Tundish
• 3kW Immersion heater including control and cut out thermostats
• Expansion vessel/mounting bracket/exible hose
• Cylinder temperature sensor and retaining clip (ZK00539)
• Technical/user product literature
Optional Extras
• Control thermostat
• Energy cut-out thermostat
• Energy cut-out motorised valve
(Note: Please refer to tables 1 and 2 on pages 6-9 to conrm the quantity of immersion
heaters supplied with the unit)
In any situation where the volume of heated pipework (eg. secondary circulation pipes
or manifold pipework for multiple units) exceeds 10 litres, then an additional expansion
vessel must be tted to accommodate the extra expansion volume.
Handling Before Installation
Viessmann Vitocell 200 Cylinder must be handled with care and stored the correct
way up in a dry place. Any manual handling/lifting operations will need to comply
with the requirements of the Manual Handling Operations Regulations issued by the
H.S.E. The appliance can be moved using a sack truck on the rear face although care
should be taken and the route should be even. In apartment buildings containing a
number of storeys we would recommend that the appliances are moved vertically
in a mechanical lift. If it is proposed to use a crane, expert advice should be obtained
regarding the need for slings, lifting beams etc.
A specic manual handling assessment is shown in Appendix B at the rear of this
manual.
Maintenance
Modifications should not be made to this
product. Replacement parts, including immersion
heaters, should be purchased from Viessmann
Limited, or agents approved by them. Unvented
hot water storage vessels need regular routine
checks, and these are detailed below. It is for
this reason that this manual must always be left
with the Viessmann Vitocell 200 Cylinder.
It is essential that these checks be carried out
at the time of boiler maintenance by a qualied
installer:
1. Manually open the relief valves in turn, and
check that water is discharged from the
valves and runs freely through the tundish
and out at the discharge point. Ensure that
the valves re-seat satisfactorily. (Note - the
water may be very hot).
2. It is important to check that the discharge
pipework is carrying the water away
adequately. Check for blockages etc. if it is
not.
3. Turn the mains water o and remove and
clean the strainer element in the Pressure
Reducing Valve.
4. Check the charge pressure in the expansion
vessel and repressurise if required
5. Re-ll the system and ensure that all relief
valves have re-seated.
6. The Benchmark Service Record should be
updated at each service.
7. Check the water pressure downstream of the
combination valve is 3 bar in static condition.
8. Check and if necessary, descale the heat
exchanger in hard water areas ie. above
200ppm (mg/l).
Note:
The cylinder is factory tted with a temperature
& pressure relief valve that must not be used for
any other purpose or removed.
The cylinder is factory tted with immersion
heaters with thermal cut outs. Immersions
without thermal cut outs must not be tted.

Page 4
DESIGN
DESCRIPTION
Introduction
Viessmann Vitocell 200 Cylinder is a range
of unvented hot water storage cylinders,
manufactured in the latest high quality duplex
stainless steel. They are designed to provide
mains pressure hot water and are supplied as a
package which complies with Section G3 of the
Building Regulations. The appliance is extremely
well insulated using high density HCFC free foam
insulation with an ozone depleting potential
(ODP) of zero and a global warming potential
(GWP) of 1. It is tted with all necessary safety
devices and supplied with all the necessary
control devices to make installation on site as
easy as possible.
ViessmannVitocell 200 Cylinder is available
in two basic variants:
1. Viessmann Vitocell 200-V Cylinder - For
use with gas or oil boilers (Figure 1). Vitocell
200 Cylinders must not be used with solid
fuel boilers or steam as the energy source.
2. ViessmannVitocell 200-B Solar Cylinder
- For providing hot water by solar gains
and gas or oil boilers (Figure 2). Unvented
cylinders must not be used with solid fuel
boilers or steam as the energy source.
Viessmann Vitocell 200-V Cylinder
Viessmann Vitocell 200-V Cylinder is an
unvented hot water storage cylinder and is
provided with a high eciency internal primary
coil which is designed for use with a gas or oil
boiler and is suitable for both open vented and
sealed pumped primary systems.
When used with a sealed heating system the
boiler must incorporate its own energy cut-out
overheat thermostat.
Viessmann Vitocell 200-V Cylinder models are
listed in Table 1 on Page 6 & 7.
Pipework is not supplied by manufacturer,
but to be supplied and tted by installer.
Viessmann Vitocell 200-V Cylinder
Figure 1

Page 5
DESIGN
DESCRIPTION
Pipework is not supplied by manufacturer,
but to be supplied and tted by installer.
Viessmann Vitocell 200-B Solar Cylinder
Viessmann Vitocell 200-B Solar Cylinder is an
unvented hot water storage cylinder and is
provided with a high eciency internal primary
coil which is designed for use with a gas or oil
boiler and is suitable for both open vented and
sealed pumped primary systems.
When used with a sealed heating system the
boiler must incorporate its own energy cut-out
overheat thermostat.
A high eciency second solar coil is positioned
below the primary coil to ensure maximum
benet of solar gain energy.
ViessmannVitocell 200-B Solar Cylinder models
are listed in Table 1 on Page 6 & 7.
Note:
The cold supply elbow c/w drain tapping
must be tted as shown in gs 1, 2, 3 and 4.
A exible hose can then be connected to the
drain tapping and, providing the hose runs
below the lowest level of the cylinder, then
all the water contents can be drained out by
syphonic action. (The cold feed pipe dips
internally to the base of the cylinder.)
Viessmann Vitocell 200-B Solar Cylinder
Figure 2

Page 6
DESIGN
TECHNICAL DATA
A
C
Vitocell 200-V
D
H
F
E
I
J
B
G
D
Vitocell 200-B Solar
N
G
P
I
E
K
J
A
B
M
L
C
Table 1
Model
Product Stock Code
Energy Eciency Class
Heat Loss
Capacity (Total Volume)
Weight - Empty
Weight - Full
Pressure Regulator 3 bar inlet
group c/w balance cold supply,
expansion vessel connection and
expansion valve set at 4.5 bar
Expansion Vessel size.
Pre-charged to 3 bar
Overall Height
Overall Diameter
Pressure & Temperature
Relief Valve 6bar 95°C
22mm Secondary
Return Tapping
On Peak Immersion
Heater - High Level
Cold Feed 22mm
Compression Connection
O Peak Immersion
Heater - Low Level
Volume of On Peak Water
Heated
Dual Control & Overheat Stat
Extra Stat Pocket
For Boiler Use If Required
22mm Primary Return
Compression Connection
22mm Primary Flow Compression
Connection
22mm Solar Return
Compression Connection
22mm Solar Flow
Compression Connection
Dual Control & Overheat Stat
Solar Pocket Solar Pocket
kW Rating of Primary Coil
Surface Area of
Primary Heater Coil
Pressure Loss Across
Primary Heater Coil
Surface Area of
Solar Heater Coil
Pressure Loss Across Solar Heater
Coil
Heat Up Time from 15°C to 60°C
(applies to Primary Heat Source only)
Dedicated Solar Volume
Watts Litres kg kg bar Litres A=mm mm B=mm C=mm D=mm E=mm F=mm Litres G=mm H=mm I=mm J=mm K=mm L=mm M=mm N=mm P=mm kW m2bar m2bar min Litres
Vitocell 200-V
90 7572707 B 35 90 19 109 3 12 745 550 490 n/a 352 367 n/a 40 367 367 223 312 n/a n/a n/a n/a n/a 16.5 0.59 0.165 n/a n/a 17 n/a
120 7572708 B 44 120 22 142 3 12 930 550 678 n/a 352 367 n/a 67 367 367 223 312 n/a n/a n/a n/a n/a 18 0.59 0.165 n/a n/a 21 n/a
150 7572709 B 51 150 26 176 3 18 1120 550 865 n/a 392 442 n/a 92 407 407 223 392 n/a n/a n/a n/a n/a 18.5 0.68 0.191 n/a n/a 25 n/a
180 7572710 B 54 180 28 208 3 18 1305 550 1053 n/a 432 442 n/a 116 447 447 223 392 n/a n/a n/a n/a n/a 19 0.78 0.216 n/a n/a 30 n/a
210 7572711 C 65 210 33 243 3 24 1495 550 1241 1127 432 442 n/a 145 482 482 223 392 n/a n/a n/a n/a n/a 25.6 1.37 0.297 n/a n/a 32 n/a
250 7572712 C 75 250 38 288 3 24 1745 550 1491 1377 927 522 512 109 577 577 223 472 n/a n/a n/a n/a n/a 27.1 1.37 0.297 n/a n/a 36 n/a
300 7572713 C 85 300 44 344 3 35 1992 550 1720 1577 1077 522 512 130 677 677 223 522 n/a n/a n/a n/a n/a 24.9 1.37 0.297 n/a n/a 38 n/a
Vitocell 200-B Solar
210 7572714 C 65 210 35 245 3 24 1495 550 1240 1127 723 437 n/a 95 888 n/a 758 1018 223 352 419 1000 233 18.5 0.68 0.191 0.680 0.191 35 101
250 7572715 C 75 250 40 290 3 24 1745 550 1491 1377 785 522 n/a 115 970 n/a 820 1120 223 472 539 1180 294 19 0.78 0.216 0.970 0.241 38 107
300 7572716 C 85 300 46 346 3 35 1992 550 1720 1577 910 522 n/a 140 1095 n/a 945 1245 223 472 539 1367 300 20.5 0.78 0.216 0.970 0.241 41 125

Page 7
DESIGN
TECHNICAL DATA
4
0
,0
0
º
4
5
,
00º
3
5
,00º
2
5,
0
0
º
1
5
,
0
0
º
NOTES
1. Not all models - see table 1.
2. Recovery times based on Primary
Coil/I.H. duty (ie. assumes the boiler
output is adequate).
3. All connections are supplied with
compression fittings for direct
connection to copper pipework.
4. The diagrams shown are generic.
For exact product specification
refer to the table eg. the number
of immersion heaters varies
depending on model.
5. Heat up and recovery times based
on 0.25 l/s primary ow rate and at
82°C ow temperature.
Table 1
Model
Product Stock Code
Energy Eciency Class
Heat Loss
Capacity (Total Volume)
Weight - Empty
Weight - Full
Pressure Regulator 3 bar inlet
group c/w balance cold supply,
expansion vessel connection and
expansion valve set at 4.5 bar
Expansion Vessel size.
Pre-charged to 3 bar
Overall Height
Overall Diameter
Pressure & Temperature
Relief Valve 6bar 95°C
22mm Secondary
Return Tapping
On Peak Immersion
Heater - High Level
Cold Feed 22mm
Compression Connection
O Peak Immersion
Heater - Low Level
Volume of On Peak Water
Heated
Dual Control & Overheat Stat
Extra Stat Pocket
For Boiler Use If Required
22mm Primary Return
Compression Connection
22mm Primary Flow Compression
Connection
22mm Solar Return
Compression Connection
22mm Solar Flow
Compression Connection
Dual Control & Overheat Stat
Solar Pocket Solar Pocket
kW Rating of Primary Coil
Surface Area of
Primary Heater Coil
Pressure Loss Across
Primary Heater Coil
Surface Area of
Solar Heater Coil
Pressure Loss Across Solar Heater
Coil
Heat Up Time from 15°C to 60°C
(applies to Primary Heat Source only)
Dedicated Solar Volume
Watts Litres kg kg bar Litres A=mm mm B=mm C=mm D=mm E=mm F=mm Litres G=mm H=mm I=mm J=mm K=mm L=mm M=mm N=mm P=mm kW m2bar m2bar min Litres
Vitocell 200-V
90 7572707 B 35 90 19 109 3 12 745 550 490 n/a 352 367 n/a 40 367 367 223 312 n/a n/a n/a n/a n/a 16.5 0.59 0.165 n/a n/a 17 n/a
120 7572708 B 44 120 22 142 3 12 930 550 678 n/a 352 367 n/a 67 367 367 223 312 n/a n/a n/a n/a n/a 18 0.59 0.165 n/a n/a 21 n/a
150 7572709 B 51 150 26 176 3 18 1120 550 865 n/a 392 442 n/a 92 407 407 223 392 n/a n/a n/a n/a n/a 18.5 0.68 0.191 n/a n/a 25 n/a
180 7572710 B 54 180 28 208 3 18 1305 550 1053 n/a 432 442 n/a 116 447 447 223 392 n/a n/a n/a n/a n/a 19 0.78 0.216 n/a n/a 30 n/a
210 7572711 C 65 210 33 243 3 24 1495 550 1241 1127 432 442 n/a 145 482 482 223 392 n/a n/a n/a n/a n/a 25.6 1.37 0.297 n/a n/a 32 n/a
250 7572712 C 75 250 38 288 3 24 1745 550 1491 1377 927 522 512 109 577 577 223 472 n/a n/a n/a n/a n/a 27.1 1.37 0.297 n/a n/a 36 n/a
300 7572713 C 85 300 44 344 3 35 1992 550 1720 1577 1077 522 512 130 677 677 223 522 n/a n/a n/a n/a n/a 24.9 1.37 0.297 n/a n/a 38 n/a
Vitocell 200-B Solar
210 7572714 C 65 210 35 245 3 24 1495 550 1240 1127 723 437 n/a 95 888 n/a 758 1018 223 352 419 1000 233 18.5 0.68 0.191 0.680 0.191 35 101
250 7572715 C 75 250 40 290 3 24 1745 550 1491 1377 785 522 n/a 115 970 n/a 820 1120 223 472 539 1180 294 19 0.78 0.216 0.970 0.241 38 107
300 7572716 C 85 300 46 346 3 35 1992 550 1720 1577 910 522 n/a 140 1095 n/a 945 1245 223 472 539 1367 300 20.5 0.78 0.216 0.970 0.241 41 125

Page 8
DESIGN
SYSTEM DETAILS
Viessmann Vitocell 200-V Cylinder
Basic Appliance
1. Hot water draw o (22mm) compression
2. Temperature& pressurerelief valve92-95°/6bar
3. Hot water secondary return 22mm
(not tted to smaller sizes, see table 1)
4. Immersion heater 1¾” BSP 3kW
5. 22mm cold supply compression
6. Immersion heater 1¾” BSP 3kW
7. Dual control/overheat stat pocket (22mm)
8. Boiler control sensor pocket (spare)
9. Primary return (22mm)
10. Primary ow (22mm))
Part G3 loose components supplied in a
separate box
A. Combination inlet group incorporating
pressure reducing valve, strainer, check
valve, balanced cold take off point,
expansion relief valve and expansion vessel
connection points.
B. Potable expansion vessels c/w exible hose
and wall bracket
C. Tundish
D. Wiring junction box for primary system
E. Cylinder temperature sensor and xing clip
(part number ZK00539)
Optional components available
A. Dual control thermostat and combined
overheat thermostat
B. Two port (22mm) zone valve for
primary circuit
1
2
3
4
7
5
6
9
8
10
Typical arrangement of component kit shown tted to the appliance for clarity
Pipework to be supplied and tted by installer.

Page 9
DESIGN
SYSTEM DETAILS
7
9
3
11
6
12
12
1
2
8
4
5
10
Viessmann Vitocell 200-B Solar Cylinder
Basic Appliance
1. Hot water draw o (22mm) compression
2. Temperature& pressurerelief valve92-95°/6bar
3. Hot water secondary return 22mm
(not tted to smaller sizes, see table 1)
4. Immersion heater 1¾” BSP 3kW
5. 22mm cold supply
6. Dual control/Overheat stat pocket (solar)
7. Primary return (22mm)
8. Primary ow (22mm)
9. Dual control/Overheat stat pocket (boiler)
10. Solar coil return to panel collector (22mm)
compression
11.
Solar coil ow from panel (22mm) compression
12. Solar thermostat pocket
Part G3 loose components supplied in a
separate box
A. Combination inlet group incorporating
pressure reducing valve, strainer, check valve,
balanced cold take o point, expansion relief
valve and expansion vessel connection points.
B. Potable expansion vessels c/w exible hose
and wall bracket
C. Tundish
D. Wiring junction box for primary system
E. Cylinder temperature sensor and xing clip
(part number ZK00539)
Optional components available
A. Dual control thermostat and combined
overheat thermostat (x2)
B. Two port (22mm) zone valve for
primary circuit
Typical arrangement of component kit shown tted to the appliance for clarity
Pipework to be supplied and tted by installer.

Page 10
INSTALLATION
INSTALLATION
General Design Considerations
The cupboard footprint needs to be at least 650mm square for units.
The base chosen for the cylinder should be level and capable of supporting the weight
of the unit when full of water as shown in General Data. The discharge pipework for
the safety valves must have a minimum fall of 1 : 40 from the unit to a safe discharge
point. All exposed pipework and ttings on the cylinder should be insulated, and the
unit should NOT be xed in a location where the contents could freeze.
In new systems, pipes should be insulated to comply with building regs, the maximum
permissible heat loss is indicated in the table opposite, and labelled accordingly as follows:
i. Primary circulation pipes for domestic hot water circuits should be insulated
throughout their length, subject only to practical constraints imposed by the need
to penetrate joists and other structural elements.
ii. All pipes connected to hot water storage vessels, including the vent pipe, should
be insulated for at least 1 metre from their points of connection to the cylinder (or
they should be insulated up to the point where they become concealed).
In replacement systems, whenever a boiler or hot water storage vessel is replaced in
an existing system, any pipes that are exposed as part of the work or are otherwise
accessible should be insulated as recommended for new systems, or to some lesser
standard where practical constraints dictate.
The pipe connecting the boiler ow to the appliance must not be less than 22mm
copper or equivalent.
Further guidance on converting heat loss limits to insulation thickness for specic
thermal conductivities is available inTIMSA“HVAC guidance for achieving compliance
with Part L of the Building Regulations”.
Model Selection Guide
Max hot water demand
Max number
of bed spaces
(Bedrooms)
Litres
1 shower room Bedsit (0) 90
1 bathroom 2 (2) 120
1 bathroom 4 (3) 120
1 bathroom + separate shower room 6 (4) 150
1 bathroom + 2 separate shower rooms or 2
bathrooms 7 (5) 180
2 bathrooms + separate shower room 7 (5) 210
2 bathrooms + 2 separate shower rooms 7 (5) 250
3 bathrooms + 2 separate showers rooms 9 (6) 300
Solar Model Selection Guide
Max hot water demand Bedrooms Litres
1 bathroom + 1 shower room 1-3 210
1 bathroom + 2 shower rooms 2-4 250
2 bathrooms + 1 shower room 3-4 300
Insulation of pipework
Pipe outside
diameter
Maximum
heat loss
15mm 7.89W/m
22mm 9.12W/m
28mm 10.07W/m
35mm 11.08W/m
Mains Water Supply
Existing properties with a 15mm supply will be
satisfactory provided the local mains pressure
is good, but should be confined to single
bathroom properties. For new properties where
simultaneous demand is required to more than
one bathroom or a bathroom and one or more
en-suites, the communication and service
pipe into the dwelling should be a minimum
of 22mm (usually in the form of a 25mm MDPE
supply). The optimum performance is achieved
if the inet pressure is 3 bar dynamic. However,
the ViessmannVitocell 200 cylinder will function
with lower inlet pressures, but this will reduce the
performance. For optimum performance, 30L per
minute incoming mains ow should be present,
however the Viessmann Vitocell will work at lower
ow rates, although performance will be aected.
Normally Viessmann Vitocell 200 Cylinder
provides well in excess of 40 litres/min in most
conditions. Flow rates for ALL mains pressure
systems are subject to district pressures and
system dynamic loss. Particularly on larger
properties with more than one bathroom, the
pipe sizes should be calculated in accordance
with BS EN 806-3:2006 and BS 8558:2011.
Model Selection
The suggested model sizes are based on
typical hot water usage. For high specication
dwellings an increase of one model size should
be considered.