Viessmann Vitodens 222-F B2TA series Quick guide

Installation and service
instructions
for contractors
VIESMANN
Vitodens 222-F
Type B2TA, 3.2 to 35 kW
Gas condensing storage combi boiler
g: Gas council no.
41-819-15; 41-819-16; 41-819-17
Natural gas and LPG version
For applicability, see the last page
VITODENS 222-F
5773 216 GB 12/2012 Please keep safe.

2
Please follow these safety instructions closely to prevent accidents and mate-
rial 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 envi-
ronmental pollution.
Note
Details identified by the word "Note" con-
tain additional information.
Target group
These instructions are exclusively inten-
ded for qualified contractors.
■ Work on gas installations must only be
carried out by a registered gas fitter.
■ Work on electrical equipment must
only be carried out by a qualified elec-
trician.
■ The system must be commissioned by
the system installer or a qualified per-
son authorised by the installer.
Regulations
Observe the following when working on
this system:
■ Statutory regulations regarding the
prevention of accidents
■ Statutory regulations regarding envi-
ronmental protection
■ Codes of practice of the relevant trade
associations
■ All current safety regulations as
defined by DIN, EN, DVGW, TRGI,
TRF, VDE and all locally applicable
standards
aÖNORM, EN, ÖVGW-TR Gas,
ÖVGW-TRF and ÖVE
cSEV, SUVA, SVGW, SVTI,
SWKI, VKF and EKAS guideline
1942: LPG, part 2
If you smell gas
Danger
Escaping gas can lead to explo-
sions which may result in serious
injury.
■ Do not smoke. Prevent naked
flames and sparks. Do not
switch lights or electrical appli-
ances on or off.
■ Close the gas shut-off valve.
■ Open windows and doors.
■ Evacuate any people from the
danger zone.
■ Notify your gas or electricity
supply utility from outside the
building.
■ Shut off the electricity supply to
the building from a safe place
(outside the building).
Safety instructions
Safety instructions
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3
If you smell flue gas
Danger
Flue gas can lead to life-threat-
ening poisoning.
■ Shut down the heating system.
■ Ventilate the installation site.
■ Close all doors in the living
space.
Flue systems and combustion air
Ensure that flue systems are clear and
cannot be sealed, for instance due to
accumulation of condensate or other
causes. Ensure a sufficient supply of
combustion air.
Instruct system users that subsequent
modifications to the building characteris-
tics are not permissible (e.g. cable/pipe-
work routing, cladding or partitions).
Danger
Life-threatening poisoning
caused by carbon monoxide in
the flue gas occurs as a result of
leaking or blocked flue systems
or an insufficient supply of com-
bustion air.
Ensure the flue system is in
proper working order. It must not
be possible to close apertures for
interconnected combustion air
supply.
Extractors
Operating appliances that extract air to
the outside (cooker hoods, extractors, air
conditioning units, etc.) can create neg-
ative pressure. If the boiler is operated at
the same time, this can lead to reverse
flow of the flue gas.
Danger
The simultaneous operation of
the boiler and appliances that
extract air to the outside can
result in life threatening poison-
ing due to reverse flow of the flue
gas.
Fit an interlock circuit or take suit-
able steps to ensure a sufficient
supply of combustion air.
Working on the system
■ Where gas is used as the fuel, close
the main gas shut-off valve and safe-
guard it against unintentional reopen-
ing.
■ Isolate the system from the power sup-
ply (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 recon-
nection.
!Please note
Electronic assemblies can be
damaged by electrostatic dis-
charge.
Prior to commencing any work,
touch earthed objects, such as
heating or water pipes to dis-
charge static loads.
Repair work
!Please note
Repairing components that fulfil a
safety function can compromise
the safe operation of your sys-
tem.
Defective components must be
replaced with genuine
Viessmann spare parts.
Safety instructions
Safety instructions (cont.)
5773 216 GB

4
Auxiliary components, spare and
wearing parts
!Please note
Spare and wearing parts that
have not been tested together
with the system can compromise
its function. Installing non-author-
ised components and making
non-approved modifications or
conversions can compromise
safety and may invalidate our
warranty.
For replacements, use only orig-
inal spare parts supplied or
approved by Viessmann.
Safety instructions
Safety instructions (cont.)
5773 216 GB

5
Installation instructions
Preparing for installation
Intended use......................................................................................................... 7
Product information.............................................................................................. 7
Preparing for boiler installation............................................................................. 8
Installing the boiler
Removing the front panels................................................................................... 12
Siting and levelling the boiler................................................................................ 13
Connections on the heating water and the DHW side.......................................... 14
Condensate connection........................................................................................ 15
Flue gas connection............................................................................................. 16
Gas connection.................................................................................................... 17
Opening the control unit casing............................................................................ 19
Electrical connections........................................................................................... 20
Closing the control unit casing............................................................................. 29
Fitting the front panels.......................................................................................... 31
Service instructions
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance.......................................... 32
Further details regarding the individual steps....................................................... 35
Code 1
Calling up coding level 1...................................................................................... 77
"General"/group 1................................................................................................. 78
"Boiler"/group 2.................................................................................................... 80
"DHW"/group 3..................................................................................................... 81
"Heating circuit ..."/group 5................................................................................... 81
Code 2
Calling up coding level 2...................................................................................... 89
"General"/group 1................................................................................................. 90
"Boiler"/group 2.................................................................................................... 97
"DHW"/group 3..................................................................................................... 99
"Heating circuit ..."/group 5................................................................................... 101
Diagnosis and service scans
Service menu....................................................................................................... 111
Diagnosis.............................................................................................................. 112
Checking outputs (actuator test).......................................................................... 118
Index
Index
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6
Troubleshooting
Fault display......................................................................................................... 120
Fault codes........................................................................................................... 122
Repair................................................................................................................... 137
Function description
Constant temperature control unit........................................................................ 149
Weather-compensated control unit...................................................................... 150
Internal extensions............................................................................................... 152
External extensions (accessories)........................................................................ 154
Control functions.................................................................................................. 158
Allocating heating circuits to the remote control................................................... 166
Electronic combustion control unit........................................................................ 166
Designs
Internal connection diagram................................................................................. 168
External connection diagram................................................................................ 169
Parts lists
Ordering individual parts...................................................................................... 171
Overview of the assemblies................................................................................. 172
Casing.................................................................................................................. 173
Hydraulics............................................................................................................. 175
Primary store........................................................................................................ 178
Heat cell............................................................................................................... 180
Control unit........................................................................................................... 183
Miscellaneous....................................................................................................... 185
Commissioning/service reports........................................................................ 187
Specification....................................................................................................... 188
Certificates
Declaration of conformity...................................................................................... 190
Manufacturer's certificate according to the 1st BImSchV [Germany]................... 191
Keyword index.................................................................................................... 192
Index
Index (cont.)
5773 216 GB

7
The appliance is only intended to be
installed and operated in sealed unven-
ted heating systems that comply with
EN 12828, with due attention paid to the
associated installation, service and
operating instructions. It is only designed
for the heating of water that is of potable
water quality.
Intended usage presupposes that a fixed
installation in conjunction with permissi-
ble, system-specific components has
been carried out.
Commercial or industrial usage for a pur-
pose other than heating the building or
DHW does not comply with regulations.
Any usage beyond this must be
approved by the manufacturer for the
individual case.
Incorrect usage or operation of the appli-
ance (e.g. the appliance being opened
by the system user) is prohibited and
results in an exclusion of liability. Incor-
rect usage also occurs if the components
in the heating system are modified from
their intended function (e.g. if the flue
gas and ventilation air paths are
sealed).
Product information
Vitodens 222-F, type B2TA
Preset for operation with natural gas E
and natural gas LL.
For conversion to LPG P (without con-
version kit), see page 44.
In principle the Vitodens 222-F may only
be delivered to countries listed on the
type plate. For deliveries to alternative
countries, an approved contractor must
arrange individual approval on his own
initiative and in accordance with the law
of the country in question.
Preparing for installation
Intended use
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Installation

8
Use a connection set or connection kit,
available as an accessory, to make the
connection on the gas and water sides.
Fitting accessories
Fit all accessories that are installed from
the back of the boiler (e.g. connection
sets).
Preparing the connections on
site:
Connection set installation
instructions.
Or
Assembly kit installation instruc-
tions.
!Please note
Avoid device damage.
Connect all pipework free of load
and torque stress.
The following diagram shows sample
connection sets for installation on fin-
ished walls to the top or side.
100
569
46
40
50
c
d
e
f
g
h
k
l
m
n
p
a b
140
50
320
361
398
410
80
Preparing for installation
Preparing for boiler installation
5773 216 GB

9
q
50
595
50
600
55
220
330
G
C
A
B
F
D
E
AHeating flow R ¾
BDHW R ½
CGas connection R ¾
DCold water R ½
EHeating return R ¾
FDHW circulation R ½ (separate
accessory)
GCondensate drain to the back into
the wall
HSide condensate drain
KWiring area
Rated heating
output range
3.2 to
26 kW
5.2 to
35 kW
a (mm) 745 945
b (mm) 750 950
c (mm) 972 1172
d (mm) 1027 1227
e (mm) 1082 1302
f (mm) 1137 1337
g (mm) 1191 1391
h (mm) 1247 1447
k (mm) 1302 1562
l (mm) 1437 1637
m (mm) 1466 1666
n (mm) 1465 1665
p (mm) 1526 1726
q (mm) 201 224
Note
All height dimensions have a tolerance
of +15 mm due to the adjustable feet.
1. Prepare the heating water connec-
tions.
Thoroughly flush the heating sys-
tem.
Note
Should an additional expansion ves-
sel be required on site, connect this
vessel in the heating return.
Preparing for installation
Preparing for boiler installation (cont.)
5773 216 GB
Installation

10
M
L
>200
2. Prepare the connections on the DHW
side. Install the safety assembly
(accessory or on-site provision) in
accordance with DIN 1988 and
EN 806 in the cold water line (see
page 11).
Recommendation:
Install the safety valve above the
DHW cylinder to protect it against
contamination, scaling and high tem-
peratures.
3. Prepare the condensate connection
to the on-site drain line or siphon:
■ Drain towards the back:
See dimensions for condensate
hose M and position G in dia-
gram on page 8.
■ Drain towards the side aperture:
See position H in diagram on
page 8.
4. Prepare the gas connection accord-
ing to TRGI or TRF [or local regula-
tions].
5. Prepare the electrical connections.
■Power cable: NYM-J 3 x 1.5 mm2,
max. fuse rating 16 A,
230 V/50 Hz.
■ Accessory cables: NYM with the
required number of conductors for
the external connections.
■Allow all cables in area K in the
diagram on page 8 to protrude
approx. 2000 mm from the wall.
Preparing for installation
Preparing for boiler installation (cont.)
5773 216 GB

11
Safety assembly in accordance with DIN 1988 and EN 806 to the
cold water connection
ASafety assembly (accessory for the
connection sets on unfinished
walls)
BSafety valve
CVisible discharge pipe outlet point
DShut-off valve
EFlow regulating valve (installation
recommended)
FPressure gauge connection
GNon-return valve
HDrain
KCold water
LDrinking water filter
MPressure reducer to DIN 1988-2,
Dec. 1988 issue
NNon-return valve/pipe separator
OCold water connection at connec-
tion set (accessories)
Preparing for installation
Preparing for boiler installation (cont.)
5773 216 GB
Installation

12
2.
5.
1.
4.
2x
3.
Installing the boiler
Removing the front panels
5773 216 GB

13
1.
2.
SW17
Installing the boiler
Siting and levelling the boiler
5773 216 GB
Installation

14
Shown with connection sets for finished walls (accessories)
AHeating flow R¾
BDHW R½
CDHW circulation R½ (separate
accessory)
DCold water R½
EHeating return R¾
Connection on the domestic hot water side
The DHW expansion vessel, available
as an accessory, is installed in the cold
water supply inside the boiler.
Separate installation instructions
Installing the boiler
Connections on the heating water and the DHW side
5773 216 GB

15
M
L
>200
1. If a DHW safety valve is connected,
connect hose L to the safety valve
drain.
Note
If no DHW safety valve is connected,
do not change the position of hose
L (serves as a vent).
2. Route condensate hose M to the
back (drain in wall G) or to side aper-
ture H (see page 8).
Note
Pull the condensate hose far enough
out of the boiler that no unnecessary
bends are created inside the boiler.
3. Route condensate hose M as a U-
bend and connect with a constant fall
and a pipe vent to the public sewage
system or to a neutralising system.
If necessary, connect to an on-site
siphon. Ensure this connection is
secure.
Only g
■ The condensate pipe is connected
with the discharge pipe of the safety
valve. The condensate hose supplied
meets the temperature requirements
that are part of the CE certification.
■ We recommend the internal connec-
tion of the condensate pipe to the
domestic drain, either directly or via a
tundish.
■ If the condensate pipe is routed out-
side the building, use a pipe with at
least 7 30 mm and protect this pipe
from frost. Avoid long external pipe-
lines.
!Please note
Frozen condensate pipes can
result in faults and damage to
the boiler.
Always insulate condensate
pipes against frost.
■ Observe local building regulations.
Installing the boiler
Condensate connection
5773 216 GB
Installation

16
Observe the local waste water regula-
tions.
Note
Fill the siphon with water before com-
missioning.
Flue gas connection
Note
■ The labels "System certificate" and
"Skoberne GmbH flue system"
enclosed with the technical documen-
tation may only be used in conjunction
with the Viessmann flue system made
by Skoberne.
■ During installation and positioning of
the flue system, observe Part L and
BS 5440 building regulations
(only
g
)
Connecting the balanced flue
Flue system installation instruc-
tions
Do not carry out commissioning until
the following conditions are met:
■ Free passage through the flue gas
pipes.
■ Flue system with positive pressure is
gas-tight.
■ Apertures for ensuring sufficient com-
bustion air supply are open and cannot
be closed off.
■ Applicable regulations on installing
and commissioning flue systems have
been followed.
Danger
Leaking or blocked flue systems
or an insufficient supply of com-
bustion air cause life threatening
poisoning due to carbon monox-
ide in the flue gas.
Ensure the flue system functions
correctly. Apertures for combus-
tion air supply must not be able to
be closed off.
Installing the boiler
Condensate connection (cont.)
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17
Information on operation with LPG
We recommend the installation of an
external safety solenoid valve when
installing the boiler in rooms below
ground level.
1. Seal gas shut-off valve A to the gas
connection.
2. Carry out a tightness test.
Note
Only use suitable and approved leak
detection agents (EN 14291) and
devices for the tightness test. Leak
detection agents with unsuitable con-
stituents (e.g. nitrites, sulphides) can
cause material damage.
Remove residues of the leak detec-
tion agent after testing.
Installing the boiler
Gas connection
5773 216 GB
Installation

18
!Please note
Excessive test pressure may
damage the boiler and the gas
valve.
Max. test pressure 150 mbar
(15 kPa). Where higher pres-
sure is required for tightness
tests, disconnect the boiler
and the gas valves from the
gas supply pipe (undo the fit-
ting).
3. Vent the gas line.
Conversion to other gas types:
See page 44.
Installing the boiler
Gas connection (cont.)
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19
2x
4x
4.
3.
5.
2.
1.
Installing the boiler
Opening the control unit casing
5773 216 GB
Installation

20
!Please note
Electronic assemblies can be
damaged by electrostatic dis-
charge.
Before beginning work, touch
earthed objects, such as heating
or water pipes, to discharge static
loads.
L N
230V~ 230V~
96 40
1LN
2 1
145
2
1
32 15 4
145
40962035100 21
A
B
ARadio clock receiver BJumper
Installing the boiler
Electrical connections
5773 216 GB