Viessmann Vitodens 222-F Guide rapide
Installation and service
instructions
for contractors
VIESMANN
Vitodens 222-F
Type FS2B
Compact gas condensing boiler
4.8 to 35 kW natural gas and LPG version
For applicability, see the last page
VITODENS 222-F
5457 552 GB 2/2010 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
designed for qualified personnel.
■ Work on gas equipment must only be
carried out by a qualified 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
■ all legal instructions regarding the pre-
vention of accidents,
■ all legal instructions regarding envi-
ronmental protection,
■ the Code of Practice of relevant trade
associations,
■ all current safety regulations as
defined by DIN, EN, DVGW, TRGI,
TRF, VDE and all locally applicable
standards,
■ Gas Safety (Installation & Use) Regu-
lations
– the appropriate Building Regulation
either the Building regulations, the
Building Regulation (Scotland),
Building Regulations (Northern Ire-
land),
– the Water Fittings Regulation or
Water Bylaws in Scotland,
– the current I.E.E. Wiring Regula-
tions.
If you smell gas
Danger
Escaping gas can lead to explo-
sions which may result in serious
injury.
■ Never 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.
■ Remove all people from the
danger zone.
■ Notify your gas or electricity
supplier from outside the build-
ing.
■ Shut off the electricity supply to
the building from a safe place
(outside the building).
Safety instructions
Safety instructions
5457 552 GB
3
If you smell flue gas
Danger
Flue gas can lead to life-threat-
ening poisoning.
■ Shut down the heating system.
■ Ventilate the boiler room.
■ Close all doors leading to the
living space.
Working on the system
■ When using gas as fuel, also close the
main gas shut-off valve and safeguard
against unauthorised reopening.
■ Isolate the system from the power sup-
ply and check that it is no longer 'live',
e.g. by removing a separate fuse or by
means of a main isolator.
■ Safeguard the system against unau-
thorised reconnection.
!Please note
Electronic modules can be dam-
aged by electro-static dis-
charges.
Touch earthed objects, such as
heating or water pipes, to dis-
charge static loads.
Repair work
!Please note
Repairing components which ful-
fil a safety function can compro-
mise the safe operation of your
heating system.
Replace faulty components only
with original Viessmann spare
parts.
Ancillary components, spare and
wearing parts
!Please note
Spare and wearing parts which
have not been tested together
with the heating system can com-
promise its function. Installing
non-authorised components and
non-approved modifications/con-
version can compromise safety
and may invalidate our warranty.
For replacements, use only orig-
inal spare parts from Viessmann
or those which are approved by
Viessmann.
Safety instructions
Safety instructions (cont.)
5457 552 GB
4
Installation instructions
Preparing for installation
Product information.............................................................................................. 6
Preparing for installation....................................................................................... 6
Installation sequence
Installing the boiler............................................................................................... 11
Opening the control unit casing............................................................................ 14
Electrical connections........................................................................................... 15
Closing the control unit casing............................................................................. 19
Service instructions
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance.......................................... 21
Further details regarding the individual steps....................................................... 23
Code 1
Calling up coding level 1...................................................................................... 61
General/Group "1"................................................................................................ 62
Boiler/Group "2".................................................................................................... 64
DHW/Group "3".................................................................................................... 65
Heating circuit 1, heating circuit 2, heating circuit 3/Group "5"............................. 65
Code 2
Calling up coding level 2...................................................................................... 72
General/Group "1"................................................................................................ 73
Boiler/Group "2".................................................................................................... 81
DHW/Group "3".................................................................................................... 82
Heating circuit 1, heating circuit 2, heating circuit 3/Group "5"............................. 84
Diagnosis and service scans
Calling up the service menu................................................................................. 94
Diagnosis.............................................................................................................. 94
Checking outputs (relay test)................................................................................ 99
Troubleshooting
Fault display......................................................................................................... 102
Fault codes........................................................................................................... 104
Repairs................................................................................................................. 115
Function description
Constant temperature control unit........................................................................ 126
Index
Index
5457 552 GB
5
Weather-compensated control unit...................................................................... 127
Internal extensions............................................................................................... 130
External extensions (accessories)........................................................................ 132
Control functions.................................................................................................. 136
Assigning the heating circuits to the remote control............................................. 144
Electronic combustion controller.......................................................................... 144
Designs
Internal connection diagram................................................................................. 146
External connection diagram................................................................................ 147
Parts lists............................................................................................................ 149
Commissioning/service reports........................................................................ 157
Specification....................................................................................................... 158
Certificates
Declaration of conformity...................................................................................... 159
Manufacturer's certificate according to the 1st BImSchV [Germany]................... 160
Keyword index.................................................................................................... 161
Index
Index (cont.)
5457 552 GB
6
Vitodens 222-F, FS2B
Set up for operation with natural gas E and LL.
For conversion to LPG P (without conversion kit), see page 29.
The Vitodens 222-F should generally only be delivered to those countries specified
on the type plate. For deliveries to alternative countries, an approved contractor, on
his own initiative, must arrange individual approval in accordance with the law of the
land.
Preparing for installation
Preparing the boiler installation
Use a connection set, available as an accessory, to make the connection on the gas
and water sides. The following overview shows sample connection sets for installa-
tion on finished walls to the top or side.
!Please note
To prevent equipment damage,
install all pipework free of load and torque stresses.
Preparing the connections on site:
Connection set installation instructions
Preparing for installation
Product information
5457 552 GB
7
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
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
KCable entry area
Rated output range 4.8 to 19 kW 6.5 to 26 kW 8.8 to 35 kW
a (mm) 745 745 945
b (mm) 750 750 950
c (mm) 972 972 1172
Preparing for installation
Preparing for installation (cont.)
5457 552 GB
Installation
8
Rated output range 4.8 to 19 kW 6.5 to 26 kW 8.8 to 35 kW
d (mm) 1027 1027 1227
e (mm) 1082 1082 1302
f (mm) 1137 1137 1337
g (mm) 1191 1191 1391
h (mm) 1247 1247 1447
k (mm) 1302 1302 1562
l (mm) 1437 1437 1637
m (mm) 1466 1466 1666
n (mm) 1465 1465 1665
p (mm) 1526 1526 1726
q (mm) 201 224 224
Note
The adjustable feet give all height meas-
urements a tolerance of +15 mm.
1. Prepare the heating water connec-
tions.
Flush the heating system thor-
oughly.
Note
Should an additional diaphragm
expansion vessel be required on site,
connect that vessel into the heating
return.
Preparing for installation
Preparing for installation (cont.)
5457 552 GB
9
M
L
2. Prepare the DHW connections.
Install the safety assembly (acces-
sory or on-site provision) in accord-
ance with DIN 1988 in the cold water
line (see page 10).
Recommendation:
Install the safety valve above the
DHW cylinder to protect it against
contamination, scaling and high tem-
peratures.
Connect the drain hose to conden-
sate collector L. Remove plug from
condensate collector.
3. Route condensate hose M to the
back (drain in wall G) or to the side
aperture H (see page 6).
Route condensate hose with a U-
bend and connect to on-site drain line
or siphon.
4. Prepare the gas connection accord-
ing to TRGI or TRF or all local regu-
lations.
5. Prepare the electrical connections.
■ Power supply cable: NYM-
J 3 x 1.5 mm2, fuse max. 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" (see
page 7) to protrude 2000 mm from
the wall.
Preparing for installation
Preparing for installation (cont.)
5457 552 GB
Installation
10
Safety assembly to DIN 1988
ASafety assembly to DIN 1988
(accessory to connection sets for
unfinished walls)
BSafety valve
CVisible blow-off line outlet
DShut-off valve
EFlow regulating valve (installation
recommended)
FPressure gauge connector
GNon-return valve
HDrain
KCold water
LDrinking water filter
MPressure reducer to DIN 1988-2,
issue Dec. 1988
NNon-return valve/pipe separator
OCold water connection at connec-
tion set (accessory)
Preparing for installation
Preparing for installation (cont.)
5457 552 GB
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18
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