Viessmann Vitodens 222-F Quick guide

Installation and service instructions
for contractors
VIESMANN
Vitodens 222-F
Type B2TB, 1.8 to 35.0 kW
Gas condensing storage combi boiler
Natural gas and LPG version
VITODENS 222-F
5778705 GB 3/2019 Please keep safe.

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 gas installations may only be carried out by
a registered gas fitter.
■Work on electrical equipment may only be carried
out by a qualified electrician.
■The system must be commissioned by the system
installer or a qualified person authorised by the
installer.
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
Safety instructions for working on the system
Working on the system
■Where gas is used as the fuel, close the main gas
shut-off valve and safeguard it against unintentional
reopening.
■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 suitable personal protective equipment when
carrying out any work.
Danger
Hot surfaces and fluids can lead to burns or
scalding.
■Before maintenance and service work, switch
OFF the appliance and let it cool down.
■Never touch hot surfaces on the boiler, burner,
flue system or pipework.
!Please note
Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing 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 func-
tion can compromise the safe operation of the
system.
Replace faulty components only with genuine
Viessmann spare parts.
Auxiliary components, spare and wearing parts
!Please note
Spare and wearing parts that have not been tes-
ted together with the system can compromise its
function. Installing non-authorised components
and making non-approved modifications or con-
versions can compromise safety and may inva-
lidate our warranty.
For replacements, use only original spare parts
supplied or approved by Viessmann.
Safety instructions
Safety instructions
5778705

3
Safety instructions for operating the system
If you smell gas
Danger
Escaping gas can lead to explosions which may
result in serious injury.
■Do not smoke. Prevent naked flames and
sparks. Never 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.
■Have the power supply to the building shut off
from a safe place (outside the building).
If you smell flue gas
Danger
Flue gas can lead to life threatening poisoning.
■Shut down the heating system.
■Ventilate the installation site.
■Close doors to living spaces to prevent flue
gases from spreading.
What to do if water escapes from the appliance
Danger
If water escapes from the appliance there is a
risk of electrocution.
Switch OFF the heating system at the external
isolator (e.g. fuse box, domestic distribution
board).
Danger
If water escapes from the appliance there is a
risk of scalding.
Never touch hot heating water.
Condensate
Danger
Contact with condensate can be harmful to
health.
Never let condensate touch your skin or eyes
and do not swallow it.
Flue systems and combustion air
Ensure that flue systems are clear and cannot be
sealed, for instance due to accumulation of conden-
sate or other external causes.
Ensure an adequate supply of combustion air.
Inform system users that subsequent modifications to
the building characteristics are not permissible (e.g.
cable/pipework routing, cladding or partitions).
Danger
Leaking or blocked flue systems, or an inade-
quate supply of combustion air can cause life
threatening poisoning from carbon monoxide in
the flue gas.
Ensure the flue system is in good working order.
Vents for supplying combustion air must be non-
sealable.
Extractors
Operating appliances that exhaust air to the outside
(extractor hoods, extractors, air conditioning units, etc.)
can create negative pressure. If the boiler is operated
at the same time, this can lead to a reverse flow of flue
gas.
Danger
The simultaneous operation of the boiler and
appliances that exhausts air to the outside can
result in life threatening poisoning due to a
reverse flow of flue gas.
Fit an interlock circuit or take suitable steps to
ensure an adequate supply of combustion air.
Safety instructions
Safety instructions (cont.)
5778705

4
1. Information Disposal of packaging ............................................................................ 6
System examples .................................................................................. 6
Symbols ................................................................................................. 6
Intended use .......................................................................................... 7
Product information ................................................................................ 7
■Vitodens 222-F, type B2TB ................................................................. 7
Spare parts lists ..................................................................................... 7
2. Preparing for installation Preparing for boiler installation .............................................................. 8
■Safety assembly to DIN 1988 and EN 806 on the cold water connec-
tion ...................................................................................................... 10
3. Installing the boiler Removing the front panels ..................................................................... 11
Siting and levelling the boiler ................................................................. 12
Connections on the heating water and DHW side ................................. 13
■Connection on the DHW side ............................................................. 13
Condensate connection ......................................................................... 13
Flue gas connection ............................................................................... 14
Gas connection ...................................................................................... 15
Opening the control unit enclosure ........................................................ 16
Electrical connections ............................................................................ 16
■Routing the power cable ..................................................................... 17
■Outside temperature sensor ! .......................................................... 18
■Connecting the Vitoconnect 100, type OPTO1 cable (accessories) ... 19
■External demand via switching contact .............................................. 19
■External demand via 0 – 10 V input .................................................... 20
■External blocking via switching contact .............................................. 20
■Power supply for accessories at plug lH (230 V ~) ............................ 21
■Power supply fÖ ................................................................................. 22
■Routing connecting cables ................................................................. 23
Closing the control unit enclosure .......................................................... 24
Fitting the front panels ........................................................................... 25
4. Commissioning, inspec-
tion, maintenance
Steps - commissioning, inspection and maintenance ............................ 26
5. Parameter level 1 Calling up parameter level 1 .................................................................. 54
General .................................................................................................. 54
Boiler ...................................................................................................... 56
DHW ...................................................................................................... 56
Heating circuit 1, heating circuit 2, heating circuit 3 ............................... 57
6. Parameter level 2 Calling up parameter level 2 .................................................................. 62
General .................................................................................................. 62
Boiler ...................................................................................................... 69
DHW ...................................................................................................... 72
Heating circuit 1, heating circuit 2, heating circuit 3 ............................... 74
7. Diagnosis and service
scans
Calling up the service menu .................................................................. 82
Leaving the service menu ...................................................................... 82
Change passwords ................................................................................ 82
Resetting all passwords to their delivered condition .............................. 83
Diagnosis ............................................................................................... 83
■Scanning operating data ..................................................................... 83
■Calling up device status ...................................................................... 83
■Brief scan ............................................................................................ 84
Checking outputs (actuator test) ............................................................ 85
8. Troubleshooting Fault display ........................................................................................... 87
Fault codes ............................................................................................ 87
Index
Index
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5
Maintenance .......................................................................................... 94
■Putting the control unit into the service position ................................. 94
■Draining the boiler on the heating water side ..................................... 95
■Checking the outside temperature sensor .......................................... 96
■Checking the boiler water temperature sensor, cylinder temperature
sensor or flow temperature sensor of low loss header ....................... 97
■Checking the outlet temperature sensor ............................................. 98
■Checking the plate heat exchanger .................................................... 99
■Checking the flue gas temperature sensor ......................................... 99
■Checking the temperature limiter ........................................................100
■Checking the fuse ...............................................................................101
■Mixer extension kit .............................................................................. 101
■Checking the Vitotronic 200-H (accessories) ......................................102
9. Function description Control unit ............................................................................................ 103
■Heating mode ..................................................................................... 103
■Heating the DHW loading cylinder from cold ...................................... 103
■Reheating when DHW is drawn off .....................................................103
■Boosting DHW heating ....................................................................... 103
Internal extensions .................................................................................104
■Internal extensions (accessories) ....................................................... 104
External extensions (accessories) ......................................................... 106
■AM1 extension ....................................................................................106
■EA1 extension .................................................................................... 107
Control functions ....................................................................................108
■External operating program changeover ............................................ 108
■External blocking ................................................................................ 109
■External demand ................................................................................ 109
■Venting program ................................................................................. 109
■Fill program .........................................................................................109
■Screed drying ..................................................................................... 110
■Raising the reduced room temperature .............................................. 111
■Reducing the heat-up time ................................................................. 112
Assigning heating circuits to the remote control .................................... 113
Vitocom 100, type GSM: Entering PIN code via Vitotronic .................... 114
Hydronic balancing ................................................................................ 114
Electronic combustion control unit ......................................................... 114
10. Connection and wiring dia-
gram
Connection and wiring diagram – internal connections ......................... 116
Connection and wiring diagram – external connections ........................ 117
11. Commissioning/service
reports
................................................................................................................ 119
12. Specification ................................................................................................................120
13. Certificates Declaration of Conformity ...................................................................... 122
Manufacturer's declaration .................................................................... 122
14. Keyword index ................................................................................................................123
Index
Index (cont.)
5778705

6
Please dispose of packaging waste in line with statu-
tory regulations.
System examples
Available system examples: See www.viessmann-
schemes.com.
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.
Information
Disposal of packaging
5778705
Information

7
The steps in connection with commissioning, inspec-
tion and maintenance are found in the "Commission-
ing, inspection and maintenance" section and identified
as follows:
Symbol Meaning
Steps required during commissioning
Not required during commissioning
Symbol Meaning
Steps required during inspection
Not required during inspection
Steps required during maintenance
Not required during maintenance
Intended use
The appliance is intended solely for installation and
operation in sealed unvented heating systems that
comply with EN 12828, with due attention paid to the
associated installation, service and operating instruc-
tions. It is only designed for heating up heating water
that is of potable water quality.
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 in each individual case.
Incorrect usage or operation of the appliance (e.g. the
appliance being opened by the system user) is prohibi-
ted and will result in an exclusion of liability. Incorrect
usage also occurs if the components in the heating
system are modified from their intended use (e.g. if the
flue gas and ventilation air paths are sealed).
Product information
Vitodens 222-F, type B2TB
Gas condensing storage combi boiler with Inox-Radial
heat exchanger and the following integrated compo-
nents:
■Modulating MatriX cylinder burner for natural gas
and LPG
■Hydraulics with 3-way diverter valve and variable
speed high efficiency circulation pump
■Vitotronic 200 for weather-compensated operation
with touch user interface
■Integral diaphragm expansion vessel (12 l capacity)
Preset for operation with natural gas E and
natural gas LL. For conversion to LPG P (possible
without conversion kit), see "Commissioning, inspec-
tion and maintenance".
The Vitodens 222-F may only be delivered to countries
listed on the type plate. For deliveries to other coun-
tries, approved contractors must arrange individual
approval on their own initiative and in accordance with
the law of the country in question.
Spare parts lists
Information about spare parts can be found on the
Viessmann spare parts app.
Information
Symbols (cont.)
5778705
Information

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 need to be installed from the
back of the boiler (e.g. connection sets).
Preparing connections on site:
connection set installation instructions
or
assembly kit installation instructions
Note
Fit safety equipment in accordance with the national
regulations.
!Please note
Avoid damaging the appliance.
Connect all pipework free of load and torque
stress.
The following diagram shows sample connection sets
for installation on finished walls, with connection 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
A
C
D
F
E
B
E
F
B
A
D
C
K
G
H
G
Ø 60,5+0,8
Ø 96-0,5
Fig. 1
q
50
595
50
600
55
220
330
G
C
A
B
F
D
E
Fig. 2
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 facing backwards into the wall
HCondensate drain to the side
KWiring area
Rated heating output 13, 19, 26
kW
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 +7 mm on
account of the adjustable feet.
Preparing for installation
Preparing for boiler installation
5778705
Installation

9
1. Prepare the connections on the heating water side.
Thoroughly flush the heating system.
Note
Should an additional expansion vessel be required
on site, connect this vessel in the heating return.
M
L
>200
N
Fig. 3
LTrap air vent valve
MCondensate drain hose
NCable retainer
2. Prepare the connections on the DHW side. Install
the safety assembly (accessories or on-site provi-
sion) in the cold water line to DIN 1988 and
EN 806 (see page 10).
Recommendation:
install the safety valve above the DHW cylinder to
protect it against contamination, scaling and high
temperatures.
c: according to W3 "Principles for creating pota-
ble water installations", safety valves must be
drained directly via a visible unrestricted drain or
via a short outlet line to the drain network.
3. Prepare the condensate connection to the on-site
drain line or trap:
■Drain towards the back:
see dimensions for condensate hose M and
position G in diagram on page 8.
■Drain towards the side aperture:
see position H in diagram on page 8.
Note
Do not connect the DHW cylinder safety valve to
hose L. Do not change the position of hose L
(used for ventilation).
Route the condensate hose with a U-bend. Con-
nect it with a fall to the on-site drain line or a trap.
4. Prepare the gas connection according to TRGI or
TRF [or local regulations].
5. Prepare electrical connections.
■The appliance is delivered fitted with an approx.
1.5 m long power cable. Route the cable out-
wards through the cable holder in area N. Max.
MCB/fuse rating 16 A, 230 V~, 50 Hz (duct rout-
ing, see page 17).
■Accessory cables: 0.75 mm² flexible cable with
required number of cores for external connec-
tions
Preparing for installation
Preparing for boiler installation (cont.)
5778705
Installation

10
Safety assembly to DIN 1988 and EN 806 on the cold water connection
C
F
B
D E GH D
K
D H L M D N K
A
O
Fig. 4
ASafety assembly (accessories for connection sets
for unfinished walls)
BSafety valve
CVisible discharge pipe outlet point (tundish)
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 connection set (accesso-
ries)
Preparing for installation
Preparing for boiler installation (cont.)
5778705
Installation

11
1.
4.
2x
3.
2.
5.
Fig. 5
Installing the boiler
Removing the front panels
5778705
Installation

12
1.
2.
SW17
Fig. 6
Note
Position the appliance and accessories so that they
are flush with the wall.
Installing the boiler
Siting and levelling the boiler
5778705
Installation

13
A
B
D
E
E
D
B
A
A B D E
C
C
C
Fig. 7 Shown with connection sets for finished walls
(accessories)
AHeating flow R¾
BDHW R½
CDHW circulation R½ (separate accessories)
DCold water R½
EHeating return R¾
Connection on the DHW side
The DHW expansion vessel, available as an acces-
sory, is installed in the cold water supply inside the
boiler.
Separate installation instructions
Condensate connection
M
L
>200
Fig. 8
1. Route condensate hose M to the back (drain in
wall G) or to side aperture H (see page 8).
Note
Pull the condensate hose far enough out of the
boiler so that no unnecessary bends are created
inside the boiler.
2. Route condensate hose M as a U-bend and con-
nect with a constant fall and a pipe vent to the pub-
lic sewage system or to a neutralising system.
If necessary, connect to an on-site trap. Ensure
this connection is secure.
Note
Do not connect the DHW cylinder safety valve to
hose L. Do not change the position of hose L
(used for ventilation).
Installing the boiler
Connections on the heating water and DHW side
5778705
Installation

14
■The condensate pipe is connected to the discharge
pipe of the safety valve. The supplied condensate
hose meets the temperature requirements for CE
certification.
■We recommend connecting the condensate pipe
internally to the domestic waste water system, either
directly or via a tundish.
■If the condensate pipe is routed outside the building,
use a pipe with min. 7 30 mm and protect the pipe
from frost. Avoid long external pipe runs.
!Please note
A frozen condensate pipe can result in faults
and damage to the boiler.
Always protect condensate pipes against frost.
■Observe local building regulations.
Observe local waste water regulations.
Note
Fill the trap with water before commissioning.
Flue gas connection
Note
■The "System certification" and "Skoberne GmbH flue
system" labels 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 Building Regulations Part L and BS 5440
[GB only].
Connecting the balanced flue pipe
Flue system installation instructions.
Connecting several Vitodens to a shared flue sys-
tem
If connecting several Vitodens to a shared flue system,
install a back draught safety device in each boiler.
■Multiple vertical connections:
Back draught safety device available as separate
accessory
■Flue gas cascade:
Back draught safety device in standard delivery for
the flue gas cascade (accessories)
Install the back draught safety device:
Back draught safety device installation instruc-
tions
Change control unit to operation with a shared flue
system:
■In the commissioning assistant, select the "Multiple
connections" setting under "Flue system".
or
■Set parameter/code 7E:1 in the "General" group.
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.
■Inspection port covers checked for secure and tight
seating.
■Apertures for ensuring sufficient combustion air sup-
ply are open and cannot be closed off.
■Applicable regulations on installing and commission-
ing flue systems have been followed.
Danger
Leaking or blocked flue systems or an insuffi-
cient supply of combustion air cause life threat-
ening poisoning due to carbon monoxide in the
flue gas.
Ensure the flue system functions correctly. Aper-
tures for combustion air supply must not be able
to be closed off.
Prevent condensate drainage via a wind protec-
tor.
Installing the boiler
Condensate connection (cont.)
5778705
Installation

15
A
AA
Fig. 9
1. Seal gas shut-off valve A to the gas connection.
Information on operation with LPG
Install an external safety solenoid valve if the boiler
is installed below ground level.
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 constit-
uents (e.g. nitrides, sulphides) can cause material
damage.
Remove leak detection agent residues after test-
ing.
!Please note
Excessive test pressure will damage the
boiler and the gas train.
Max. test pressure 150 mbar (15 kPa). If a
higher pressure is required for tightness
tests, disconnect the boiler and the gas train
from the main supply pipe (undo the fitting).
3. Purge the gas line.
Conversion to alternative gas types:
See page 35.
Installing the boiler
Gas connection
5778705
Installation

16
2x
4x
4.
3.
5.
2.
1.
Fig. 10
Electrical connections
!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.
Installing the boiler
Opening the control unit enclosure
5778705
Installation

17
Routing the power cable
C
B
A
230 V~
Fig. 11
Note
The power cable (already connected to the control
unit) is packed in the appliance behind the control unit.
ALON communication module (accessories)
BMain PCB
CInternal extension (accessories)
Installing the boiler
Electrical connections (cont.)
5778705
Installation

18
L N
230V~ 230V~
96 40
1LN
145
21
40962035100
2 1 3 2 15 4 21
X21
20
21
A
Fig. 12
Connections to 230 V~ plugs
fÖ Power cable already connected.
lH ■Power supply for accessories
■External demand/blocking
Connections to LV plugs
X3 Plug X3 can be removed to facilitate installation.
!Outside temperature sensor
?Flow temperature sensor for low loss header
(accessories)
ARadio clock receiver
X14 aVG KM-BUS subscriber (accessories)
■Vitotrol 200-A or Vitotrol 300-A remote control
■Vitocom 100, type GSM
■Mixer extension kit
■AM1 extension
■EA1 extension
■Wireless base station
■KM-BUS distributor
X21 CO limiter (accessories)
Information on connecting accessories
When connecting accessories observe the sep-
arate installation instructions provided with
them.
Outside temperature sensor !
Fitting location for outside temperature sensor
■North or north-westerly wall, 2 to 2.5 m above
ground level; in multi storey buildings, in the upper
half of the second floor
■Not above windows, doors or vents
■Not immediately below balconies or gutters
■Never render over.
Outside temperature sensor connection
2-core lead, length max. 35 m with a cross-section of
1.5 mm2
Installing the boiler
Electrical connections (cont.)
5778705
Installation

19
Connecting the Vitoconnect 100, type OPTO1 cable (accessories)
1.
2.
3.
Fig. 13
Installing the Vitoconnect 100
Vitoconnect 100 installation and commissioning
instructions
External demand via switching contact
Connection options:
■EA1 extension (accessory, see separate installation
instructions)
■Plug lH
When the contact is closed, burner operation is load-
dependent. The boiler water is heated to the value set
in parameter "9b" in the "General" group. The boiler
water temperature is limited by this set value and the
electronic maximum limit (parameter "06" in the
"Boiler" group).
!Please note
Live contacts lead to short circuits or phase fail-
ure.
The external connection must be potential-free
and meet the requirements of protection class II.
Installing the boiler
Electrical connections (cont.)
5778705
Installation

20
Plug lH EA1 extension
A
lH
N
?
1L
AFloating contact (when connecting, remove jumper
– if installed – between L and 1)
B
[{S
DE [{D DE
[{A
DE
A
AFloating contact
BEA1 extension
Parameter settings
■"4b:1" in the "General" group
■Effect of the function on the relevant heating circuit
pump:
Parameter "d7" in the "Heating circuit" group
■Effect of the function on the circulation pump for cylin-
der heating (if installed):
Parameter "5F" in the "DHW" group
Parameter settings
■Set "3A" (DE1), "3b" (DE2) or "3C" (DE3) in the
"General" group to 2
■Effect of the function on the relevant heating circuit
pump:
Parameter "d7" in the "Heating circuit" group
■Effect of the function on the circulation pump for cylin-
der heating (if installed):
Parameter "5F" in the "DHW" group
External demand via 0 – 10 V input
Connection at 0 – 10 V input at EA1 extension.
Ensure DC separation between the earth conductor
and the negative pole of the on-site power source.
U
+
LNL
N
fÖ
SP
aBJ
Ö
[{{]
0-10V f-]
A
+ -
Fig. 14
0 to 1 V No specification for set boiler water
temperature
1 V Set value 10 °C
10 V Set value 100 °C
External blocking via switching contact
Connection options:
■Plug lH
■EA1 extension (accessory, see separate installation
instructions)
When the contact is closed, the burner is switched off.
The heating circuit pump and (if installed) circulation
pump for cylinder heating are switched according to
the following parameter settings.
!Please note
Live contacts lead to short circuits or phase fail-
ure.
The external connection must be potential-free
and meet the requirements of protection class II.
Installing the boiler
Electrical connections (cont.)
5778705
Installation