Viessmann Vitodens 242-F Quick start guide

VIESMANN VITODENS
Gas condensing boiler
3.8 to 35.0 kW
VITODENS 222-F Type FS2B
Gas condensing storage combi boiler,
4.8 to 35.0 kW,
for natural gas and LPG
VITODENS 242-F Type FB2B
Compact Energy Tower for combined gas condensing/
solar thermal systems,
4.8 to 26.0 kW,
for natural gas and LPG
VITODENS 333-F Type FS3B and FR3B
Gas condensing storage combi boiler,
3.8 to 26.0 kW,
for natural gas and LPG
5822 431 GB 5/2010
Technical guide

Index
1. Vitodens 222-F, type FS2B 1.1 Product description ....................................................................................................... 4
1.2 Specification ................................................................................................................. 6
2. Vitodens 242-F, type FB2B 2.1 Product description ....................................................................................................... 13
2.2 Specification ................................................................................................................. 15
3. Vitodens 333-F, type FS3B 3.1 Product description ....................................................................................................... 20
3.2 Specification ................................................................................................................. 22
4. Vitodens 333-F, type FR3B 4.1 Product description ....................................................................................................... 27
4.2 Specification ................................................................................................................. 29
5. Installation accessories 5.1 Installation accessories Vitodens 222-F and Vitodens 333-F ....................................... 34
5.2 Installation accessories Vitodens 242-F ....................................................................... 41
6. Design information 6.1 Positioning, installation ................................................................................................. 47
■ Installation conditions for open flue operation (appliance type B) ............................. 47
■ Installation conditions for balanced flue operation (appliance type C) ...................... 47
■ Operation of the Vitodens in wet areas ..................................................................... 48
■ Electrical connection ................................................................................................. 48
■ Gas connection ......................................................................................................... 48
■ Minimum clearances ................................................................................................. 49
■ Installation Vitodens 222-F and 333-F ...................................................................... 50
■ Installation Vitodens 242-F ....................................................................................... 59
6.2 Decision-making aids regarding DHW heating ............................................................. 66
■ Information about water quality ................................................................................. 66
6.3 Connections on the water side ..................................................................................... 68
■ Connections on the DHW side .................................................................................. 68
6.4 Condensate connection ................................................................................................ 69
■ Condensate drain and neutralisation ........................................................................ 69
6.5 Hydraulic connection .................................................................................................... 70
■ General ..................................................................................................................... 70
■ Expansion vessels for the heating circuit .................................................................. 71
■ Expansion vessel and heat sink for the solar circuit ................................................. 72
■ Low loss header ........................................................................................................ 75
6.6 Sizing the solar thermal system .................................................................................... 75
■ Influence of alignment, inclination and shading ........................................................ 75
■ Solar coverage .......................................................................................................... 76
■ DHW demand of residential units ............................................................................. 76
■ Determining the required collector area .................................................................... 76
■ Sizing aid for the Vitodens 242-F .............................................................................. 77
7. Control units 7.1 Vitotronic 100, type HC1A, for constant temperature operation ................................... 81
■ Structure and functions ............................................................................................. 81
■ Specification, Vitotronic 100 ...................................................................................... 82
7.2 Vitotronic 200, type HO1A, for weather-compensated operation ................................. 82
■ Specification Vitotronic 200, type HO1A ................................................................... 84
■ Solar control module, type SM1 ................................................................................ 84
Index
2VIESMANN VITODENS
5822 431 GB

7.3 Accessories for the Vitotronic ....................................................................................... 85
■ Allocation to control unit types .................................................................................. 85
■ Vitotrol 100, type UTA ............................................................................................... 85
■ Vitotrol 100, type UTDB ............................................................................................ 86
■ External extension H4 ............................................................................................... 86
■ Vitotrol 100, type UTDB-RF ...................................................................................... 87
■ Notes regarding room temperature hook-up (RS function) for remote control units . 87
■ Information regarding the Vitotrol 200A and 300A .................................................... 88
■ Vitotrol 200A ............................................................................................................. 88
■ Vitotrol 300A ............................................................................................................. 88
■ Room temperature sensor ........................................................................................ 89
■ Mounting base for programming unit ........................................................................ 89
■ Radio clock receiver .................................................................................................. 90
■ Vitocom 100, type GSM ............................................................................................ 90
■ Extension kit for one heating circuit with mixer with integral mixer motor ................. 90
■ Extension kit for one heating circuit with mixer for separate mixer motor ................. 91
■ Immersion thermostat ............................................................................................... 92
■ Contact thermostat .................................................................................................... 92
■ LON communication module ..................................................................................... 92
■ Open Therm extension ............................................................................................. 92
■ LON connecting cable for data exchange between control units .............................. 93
■ Extension of the connecting cable ............................................................................ 93
■ Terminator (2 pce.) ................................................................................................... 93
■ KM BUS distributor ................................................................................................... 93
■ Immersion temperature sensor ................................................................................. 93
■ Internal extension H1 ............................................................................................... 94
■ Internal extension H2 ............................................................................................... 94
■ Extension AM1 .......................................................................................................... 94
■ Extension EA1 .......................................................................................................... 95
8. Appendix 8.1 Regulations / Directives ................................................................................................ 95
■ Regulations and Directives ....................................................................................... 95
9. Keyword index .............................................................................................................................................. 97
Index (cont.)
VITODENS VIESMANN 3
5822 431 GB

1.1 Product description
AStainless steel Inox-Radial heat exchanger for high operational
reliability, a long service life and high output in the smallest
space
BModulating MatriX cylinder burner with intelligent Lambda Pro
Control combustion controller for clean combustion and quiet
operation
CIntegral diaphragm expansion vessel
DDigital boiler control unit
EIntegral two-stage circulation pump or variable speed high effi-
ciency DC pump
FDHW primary store
The Vitodens 222-F gas condensing storage combi boiler is designed
specifically for heating system modernisation projects and as a
replacement for older gas boilers with cylinders installed below. With
output ranging up to 35 kW, this heating centre is designed for high
DHW convenience.
The integral primary store with 100 l capacity (up to 26 kW) or 130 l
capacity (35 kW) offers the DHW convenience of a separate DHW
cylinder with approximately twice that volume.
Like all Viessmann storage combi boilers, the Vitodens 222-F gas
condensing storage combi boiler takes up little space: width and depth
correspond to standard kitchen unit dimensions. The proven MatriX
cylinder burner with Lambda Pro Control combustion controller auto-
matically adjusts itself to varying gas qualities and ensures a con-
stantly high seasonal efficiency [to DIN] of 98 % (Hs).
Recommended applications
■ Installations in detached and terraced houses
■ New build (e.g. pre-fabricated houses and housing association
projects): installation in utility rooms and attics
■ Modernisation: replacement of system boilers, floorstanding atmos-
pheric gas boilers and oil/gas boilers with DHW cylinders below.
Benefits at a glance
■ Gas condensing storage combi boiler with integral enamelled pri-
mary store, 4.8 to 35.0 kW
■ Standard seasonal efficiency [to DIN]: up to 98 % (Hs)/109 % (Hi)
■ Enamelled primary store with 100 l capacity (35 kW: 130 l capacity)
■ Durable and efficient through the Inox-Radial heat exchanger
■ Modulating MatriX cylinder burner with a long service life thanks to
stainless steel MatriX mesh – resistant to high temperature loads
■ New Vitotronic control unit that is easy to operate with plain text and
graphic display
■ The programming unit part of the control unit can also be fitted on a
wall mounting base (accessory)
■ Optionally with power-saving high efficiency DC pump (compliant
with energy efficiency label A)
■ Universal connection sets for individual installation flush with the wall
■ No lateral service clearance required
■ DHW expansion vessel and DHW circulation pump can be integra-
ted inside the appliance
Delivered condition
Gas condensing boiler with stainless steel Inox-Radial heat
exchanger, modulating MatriX cylinder burner for natural gas and LPG
to DVGW Code of Practice G260 [Germany], expansion vessel, two-
speed or variable speed high efficiency DC pump and integral DHW
primary store. Fully plumbed and wired.
Colour of the epoxy-coated casing: white.
Packed separately:
Vitotronic 100 for constant temperature mode
or
Vitotronic 200 for weather-compensated operation.
Set up for operation with natural gas. A conversion within the gas group
E/LL is not required. The conversion to LPG is made at the gas valve
(a conversion kit is not required).
Vitodens 222-F, type FS2B
4VIESMANN VITODENS
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5822 431 GB

Accessories required (order separately)
Installation on finished walls
■ Connection set (for upward connection) for installation on finished
walls
or
■ Connection set (for upward connection) with premounting bracket
for installation on finished walls
or
■ Connection set (for connection to the left or right) for installation on
finished walls
or
■ Connection set (for connection to the left or right) with premounting
bracket for installation on finished walls
or
■ Connection set (for downward connection) with premounting bracket
for installation on finished walls
or
■ Assembly kit with mixer
Installation on unfinished walls
■ Connection set for installation on unfinished walls
or
■ Assembly kit with mixer
Approved quality
CE designation according to current EC Directives
Meets the requirements for the "Blue Angel" certificate of environmen-
tal excellence to RAL UZ 61.
Vitodens 222-F, type FS2B (cont.)
VITODENS VIESMANN 5
5822 431 GB
1

1.2 Specification
Gas boiler, types B and C, category II2N3P
Rated output range (details to DIN EN 677)
TV/TR = 50/30 °C kW 4.8-19.0 6.5-26.0 8.8-35.0
TV/TR = 80/60 °C kW 4.3-17.2 5.9-23.7 8.0-31.7
Rated output for DHW heating kW 4.3-17.2 5.9-29.3 8.0-35.0
Rated heat input kW 4.5-17.9 6.2-30.5 8.3-34.9
Product ID CE-0085BU0051
IP rating IP X4D in accordance with DIN EN 60529
Gas supply pressure
Natural gas mbar 20 20 20
LPG mbar 50 50 50
Max. permissible gas supply pressure*1
Natural gas mbar 25.0 25.0 25.0
LPG mbar 57.5 57.5 57.5
Power consumption (in the delivered condition)
– with two-stage circulation pump W 90 105 138
– with variable speed high efficiency DC pump W 62 65 85
Weight kg 129 132 141
Heat exchanger capacity litres 1.8 2.4 2.8
Max. flow rate
(limit for the use of hydraulic separation)
l/h 1200 1400 1600
Nominal circulation water volume
(at TV/TR = 80/60°C)
l/h 739 1018 1361
Expansion vessel
Capacity litres 12 12 12
Pre-charge pressure bar 0.75 0.75 0.75
Permiss. operating pressure (on the heating water
side)
bar 3 3 3
Connections (with connection accessories)
Boiler flow and return R ¾ ¾ ¾
Hot and cold water R ½ ½ ½
DHW circulation R ½ ½ ½
Dimensions
Length mm 595 595 595
Width mm 600 600 600
Height mm 1425 1425 1625
Gas connection (with connection accessories) R ½ ½ ½
DHW primary store
Capacity litres 100 100 130
Permiss. operating pressure (DHW side) bar 10 10 10
Continuous DHW output kW 17.2 29.3 35.0
for heating DHW from 10 to 45 °C l/h 422 720 860
Performance factor NL*2 1.8 3.0 4.8
DHW outlet output
for heating DHW from 10 to 45 °C
litres/10 min 182 230 273
Connection values
in relation to the max. load
with gas
Natural gas E m3/h 1.89 3.23 3.86
Natural gas LL m3/h 2.20 3.75 4.48
LPG P kg/h 1.40 2.39 2.85
*1 If the gas supply pressure is higher than the maximum permitted value, install a separate gas pressure governor upstream of the system.
*2 At 70 °C average boiler water temperature and cylinder storage temperature Tcyl = 60 °C.
The performance factor NL changes with the cylinder storage temperature Tcyl.
Standard values: Tcyl = 60 °C
→
1.0 × NL Tcyl = 55 °C
→
0.75 × NL Tcyl = 50 °C
→
0.55 × NL Tcyl = 45 °C
→
0.3 × NL.
Vitodens 222-F, type FS2B (cont.)
6VIESMANN VITODENS
1
5822 431 GB

Gas boiler, types B and C, category II2N3P
Rated output range (details to DIN EN 677)
TV/TR = 50/30 °C kW 4.8-19.0 6.5-26.0 8.8-35.0
TV/TR = 80/60 °C kW 4.3-17.2 5.9-23.7 8.0-31.7
Flue gas parameters*3
Flue gas value group to G 635/G 636 G52/G51 G52/G51 G52/G51
Temperature (at 30 °C return temperature)
– at rated output °C 45 45 45
– at partial load °C 35 35 35
Temperature (at 60 °C return temperature) °C 68 68 70
Mass flow rate
– for natural gas
– at rated output kg/h 33.3 47.3 70.0
– at partial load kg/h 8.4 11.8 15.7
– for LPG
– at rated output kg/h 32.5 46.4 68.2
– at partial load kg/h 8.2 11.5 15.4
Available draught Pa 250 250 250
mbar 2.5 2.5 2.5
Standard efficiency at
TV/TR = 40/30 °C % up to 98 (Hs)/109 (Hi)
Average condensate volume
for natural gas and
TV/TR = 50/30 °C litres/day 9-11 10-12 11-13
Condensate connection (hose nozzle) Ø mm 20-24 20-24 20-24
Flue gas connection Ø mm 60 60 60
Ventilation air connection Ø mm 100 100 100
*3 Calculation values for sizing the flue system to DIN EN 13384.
Flue gas temperatures measured as gross values at 20 °C combustion air temperature.
The flue gas temperature at a return temperature of 30 °C is significant for the sizing of the flue system.
The flue gas temperature at a return temperature of 60 °C is used to determine the application range of flue pipes with maximum permissible
operating temperatures.
Vitodens 222-F, type FS2B (cont.)
VITODENS VIESMANN 7
5822 431 GB
1

80
224
50
595
50
600
100
569
46
40
50
c
d
a b
140
50
AHeating flow R ¾
BDHW R ½
CGas connection R ½
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
kW
a
mm
b
mm
c
mm
d
mm
4.8 to 19 745 750 1425 1465
6.5 to 26 745 750 1425 1465
8.8 to 35 945 950 1625 1665
Note
The dimensioned drawing shows example fittings for upward connec-
tion and connection to the left/right, for installation on finished walls.
Order the connection sets separately as accessories.
For the dimensions of the individual connection sets, see the technical
guide.
If using the connection set (for downward connection) with a pre-
mounting bracket for installation on finished walls, maintain a wall
clearance of 70 mm.
Vitodens 222-F, type FS2B (cont.)
8VIESMANN VITODENS
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5822 431 GB

Note
The adjustable feet give all height measurements a tolerance of
+15 mm.
Two-stage heating circuit pump in the Vitodens 222-F
Rated boiler output kW 4.8 - 26.0 8.8 - 35.0
Type VI UPSO 15-60 VI UPSO 15-70
Rated voltage V~ 230 230
Power consumption Stage 1 W 60 70
Stage 2 W 70 90
Residual head of the integral circulation pump
Vitodens 222-F, 4.8 - 26.0 kW
Residual head in mbar
0
kPa
0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400
Flow rate in l/h
50
100
150
200
250
300
350
400
0
10
20
30
40
C
B
A
AStage 1
BStage 2
CUpper operational limit
Vitodens 222-F, type FS2B (cont.)
VITODENS VIESMANN 9
5822 431 GB
1

Vitodens 222-F, 8.8 - 35.0 kW
Residual head in mbar
0
kPa
0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400
Flow rate in l/h
50
100
150
200
250
300
350
400
0
10
20
30
40
C
A
B
AStage 1
BStage 2
CUpper operational limit
Variable speed heating circuit pump in the Vitodens 222-F
The integral circulation pump is a highly efficient DC pump with sub-
stantially lower power consumption than conventional pumps.
The pump speed and consequently the pump rate is regulated subject
to the outside temperature and the switching times for heating or
reduced mode. The control unit transmits the current default speed via
an internal data BUS to the circulation pump.
Individually match the minimum and maximum speed plus the speed
for reduced mode to the existing heating system using the control unit
codes.
In the delivered condition, the minimum pump rate (coding address
"E7") is set to 30 %. The maximum pump rate (coding address "E6")
is set to the following values:
Rated output range in kW Speed settings in the
delivered condition in %
4.8-19 55
6.5-26 65
8.8-35 65
Circulation pump VI UPM-15-70 KM
Rated voltage V~ 230
Power consumption max. W 70
min. W 6
Power consumption in
the delivered condition
- 4.8-19 kW W 27
- 6.5-26 kW W 37
- 8.8-35 kW W 37
Vitodens 222-F, type FS2B (cont.)
10 VIESMANN VITODENS
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5822 431 GB

Residual head of the integral circulation pump
Vitodens 222-F, 4.8 - 26.0 kW
Residual head in mbar
0
kPa
0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400
Flow rate in l/h
50
100
150
200
250
300
350
400
0
10
20
30
40
E
A
B C
D
EUpper operational limit
Curve Circulation pump rate Setting code address "E6"
A30 % E6:030
B50 % E6:050
C75 % E6:075
D100 % E6:100
Vitodens 222-F, type FS2B (cont.)
VITODENS VIESMANN 11
5822 431 GB
1

Vitodens 222-F, 8.8 - 35.0 kW
Residual head in mbar
0
kPa
0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400
Flow rate in l/h
100
200
300
0
10
20
30
50
150
250
350
40040
1500
F
BCDE
A
G
GUpper operational limit
Curve Circulation pump rate Setting code address "E6"
A30 % E6:030
B50 % E6:050
C60 % E6:060
D70 % E6:070
E80 % E6:080
F100 % E6:100
Vitodens 222-F, type FS2B (cont.)
12 VIESMANN VITODENS
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5822 431 GB

2.1 Product description
AStainless steel Inox-Radial heat exchanger for high operational
reliability, a long service life and high output in the smallest
space
BModulating MatriX gas burner for extremely clean combustion
CIntegral diaphragm expansion vessel
DDigital boiler control unit
EIntegral solar circuit pump
FDual mode DHW cylinder
The Vitodens 242-F gas condensing storage combi boiler for installa-
tion tight against the wall is affordable, compact, efficient and solar-
compatible. This compact appliance is factory-prepared for the direct
connection of a solar thermal system. The solar control module is
already integrated and is regulated via the Vitotronic control unit.
A convenient DHW supply is ensured by the 170 l dual mode DHW
cylinder. For ease of handling, the Vitodens 242-F can be transported
in two parts.
Recommended applications
■ Installations in detached and terraced houses
■ New build (e.g. pre-fabricated houses and housing association
projects): installation in utility rooms
Benefits at a glance
■ Gas condensing storage combi boiler (4.8 to 26 kW) with integral
solar cylinder
■ Standard seasonal efficiency [to DIN]: up to 98 % (Hs)/109 % (Hi)
■ Durable and efficient through stainless steel Inox-Radial heat
exchanger
■ MatriX cylinder burner with Lambda Pro Control combustion con-
troller for permanently high efficiency and clean combustion
■ Enamelled dual mode primary store with 170 l capacity
■ New control unit that is easy to operate with plain text and graphic
display plus integral solar control module.
■ The programming unit part of the control unit can also be fitted on a
wall mounting base (accessory)
■ Connection sets for individual installation flush with the wall
■ Solar coverage > 50 %
■ Assembly kit with the dimensions and design of the appliance
(accessory) for the connection of one regulated and one unregulated
heating circuit
Delivered condition
Gas condensing boiler with Inox-Radial heat exchanger, MatriX cylin-
der burner for natural gas and LPG to DVGW Code of Practice G260
[Germany], expansion vessel, two-stage heating circuit pump, solar
circuit pump, Vitotronic 200 for weather-compensated operation, solar
control module and integral DHW solar cylinder. Fully plumbed and
wired. Colour of the epoxy-coated casing: white.
Vitodens 242-F, type FB2B
VITODENS VIESMANN 13
5822 431 GB
2

Accessories required (order separately)
Installation on finished walls
■ Connection set (for upward connection) for installation on finished
walls
or
■ Connection set (for upward connection) with premounting bracket
for installation on finished walls
or
■ Connection set (for connection to the left or right) for installation on
finished walls
or
■ Connection set (for connection to the left or right) with premounting
bracket for installation on finished walls
or
■ Connection set (for downward connection) with premounting bracket
for installation on finished walls
or
■ Assembly kit with mixer
Installation on unfinished walls
■ Connection set for installation on unfinished walls
or
■ Assembly kit with mixer
Approved quality
CE designation according to current EC Directives
Meets the requirements for the "Blue Angel" certificate of environmen-
tal excellence to RAL UZ 61.
Vitodens 242-F, type FB2B (cont.)
14 VIESMANN VITODENS
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5822 431 GB

2.2 Specification
Gas boiler, types B and C, category II2N3P
Rated output range (details to DIN EN 677)
TV/TR = 50/30 °C kW 4.8-19.0 6.5-26.0
TV/TR = 80/60 °C kW 4.3-17.2 5.9-23.7
Rated output for DHW heating kW 4.3-17.2 5.9-29.3
Rated heat input kW 4.5-17.9 6.2-30.5
Product ID CE-0085BU0051
IP rating IP X4D in accordance with DIN EN 60529
Gas supply pressure
Natural gas mbar 20 20
LPG mbar 50 50
Max. permissible gas supply pressure*4
Natural gas mbar 25.0 25.0
LPG mbar 57.5 57.5
Power consumption (in the delivered condition) W 90 105
Weight
– Total (with casing) kg 161 165
– Heat cell module kg 42 46
– Cylinder module kg 95 95
Heat exchanger capacity litres 1.8 2.4
Max. flow rate
(limit for the use of hydraulic separation)
l/h 1200 1400
Nominal circulation water volume
(at TV/TR = 80/60°C)
l/h 739 1018
Expansion vessel
Capacity litres 12 12
Pre-charge pressure bar 0.75 0.75
Permiss. operating pressure
– Heating circuit bar 3 3
– Solar circuit bar 6 6
Connections (with connection accessories)
Boiler flow and return R ¾ ¾
Solar flow and return R/Ø mm ¾/22 ¾/22
Hot and cold water R ½ ½
DHW circulation R ½ ½
Dimensions
Length mm 595 595
Width mm 600 600
Height mm 1875 1875
Height when tilted mm 2000 2000
Gas connection (with connection accessories) R ½ ½
DHW cylinder
Capacity litres 170 170
Permiss. operating pressure (DHW side) bar 10 10
Continuous DHW output kW 17.2 29.3
for heating DHW from 10 to 45 °C l/h 422 719
Performance factor NL*5 1.4 2.0
DHW outlet output
for heating DHW from 10 to 45 °C
litres/10 min 164 190
Connection values
in relation to the max. load
with gas
Natural gas E m3/h 1.89 3.23
Natural gas LL m3/h 2.20 3.75
LPG P kg/h 1.40 2.39
*4 If the gas supply pressure is higher than the maximum permitted value, install a separate gas pressure governor upstream of the system.
*5 At 70 °C average boiler water temperature and cylinder storage temperature Tcyl = 60 °C.
The performance factor NL changes with the cylinder storage temperature Tcyl.
Standard values: Tcyl = 60 °C
→
1.0 × NL Tcyl = 55 °C
→
0.75 × NL Tcyl = 50 °C
→
0.55 × NL Tcyl = 45 °C
→
0.3 × NL.
Vitodens 242-F, type FB2B (cont.)
VITODENS VIESMANN 15
5822 431 GB
2

Gas boiler, types B and C, category II2N3P
Rated output range (details to DIN EN 677)
TV/TR = 50/30 °C kW 4.8-19.0 6.5-26.0
TV/TR = 80/60 °C kW 4.3-17.2 5.9-23.7
Flue gas parameters*6
Flue gas value group to G 635/G 636 G52/G51 G52/G51
Temperature (at 30 °C return temperature)
– at rated output °C 45 45
– at partial load °C 35 35
Temperature (at 60 °C return temperature) °C 68 68
Mass flow rate
– for natural gas
– at rated output kg/h 33.3 47.3
– at partial load kg/h 8.4 11.8
– for LPG
– at rated output kg/h 32.5 46.4
– at partial load kg/h 8.2 11.5
Available draught Pa 250 250
mbar 2.5 2.5
Standard efficiency at
TV/TR = 40/30 °C % up to 98 (Hs)/109 (Hi)
Average condensate volume
for natural gas and
TV/TR = 50/30 °C litres/day 9-11 10-12
Condensate connection (hose nozzle) Ø mm 20-24 20-24
Flue gas connection Ø mm 60 60
Ventilation air connection Ø mm 100 100
*6 Calculation values for sizing the flue system to DIN EN 13384.
Flue gas temperatures measured as gross values at 20 °C combustion air temperature.
The flue gas temperature at a return temperature of 30 °C is significant for the sizing of the flue system.
The flue gas temperature at a return temperature of 60 °C is used to determine the application range of flue pipes with maximum permissible
operating temperatures.
Vitodens 242-F, type FB2B (cont.)
16 VIESMANN VITODENS
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5822 431 GB

224
50
595
50
600
65
1915
100
719
46
40
50
1875
1085 1100
140
60
K
C
F
D
A
B
E
G
H
A
HB
D
F
E
G
C
G
E
CB
F
D
M
K
L
K
H
A
ASolar return R¾/Ø22 mm
BHeating flow R ¾
CDHW R ½
DGas connection R ½
EDHW circulation R ½ (separate accessory)
FCold water R ½
GHeating return R ¾
HSolar flow R¾/Ø22 mm
KCondensate drain to the back into the wall
LSide condensate drain
MCable entry area
Vitodens 242-F, type FB2B (cont.)
VITODENS VIESMANN 17
5822 431 GB
2

Note
The dimensioned drawing shows example fittings for upward connec-
tion and connection to the left/right, for installation on finished walls.
Order the connection sets separately as accessories.
For the dimensions of the individual connection sets, see the technical
guide.
If using the connection set (for downward connection) with a pre-
mounting bracket for installation on finished walls, maintain a wall
clearance of 70 mm.
Note
The adjustable feet give all height measurements a tolerance of
+15 mm.
Two-stage heating circuit pump in the Vitodens 242-F
Rated boiler output kW 4.8 - 26.0
Type VI UPSO 15-60
Rated voltage V~ 230
Power consumption Stage 1 W 60
Stage 2 W 70
Residual head of the integral circulation pump
Residual head in mbar
0
kPa
0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400
Flow rate in l/h
50
100
150
200
250
300
350
400
0
10
20
30
40
C
B
A
AStage 1
BStage 2
CUpper operational limit
Three-stage solar circuit pump
Type VI Solar 15-60
Rated voltage V~ 230
Power consumption Stage 1 W 50
Stage 2 W 65
Stage 3 W 80
Vitodens 242-F, type FB2B (cont.)
18 VIESMANN VITODENS
2
5822 431 GB

Residual head of the integral solar circuit pump
100
Residual head in mbar
00 500
Flow rate in l/h
200
600
800
300
400
500
700
1000 1500
10
0
20
60
80
30
40
50
70
kPa
A B C
AStage 1
BStage 2
CStage 3
Handling the Vitodens 242-F in tight spaces
If required the heat cell and cylinder can be separated for easier han-
dling at the installation location.
For the weight of the individual parts, see the specification.
600
810
1310
Vitodens 242-F, type FB2B (cont.)
VITODENS VIESMANN 19
5822 431 GB
2

3.1 Product description
AStainless steel Inox-Radial heat exchanger for high operational
reliability, a long service life and high output in the smallest
space
BModulating MatriX gas burner for extremely clean combustion
CIntegral diaphragm expansion vessel
DDigital boiler control unit
EIntegral, variable speed high efficiency DC pump
FStainless steel DHW primary store
The Vitodens 333-F storage combi boiler combines the benefits of the
Vitodens 300-W with the high DHW convenience of a separate DHW
cylinder.
With the MatriX gas burner and the stainless steel Inox-Radial heat
exchanger, the Vitodens 333-F offers top technology for many years
of energy efficiency and high heating and DHW convenience. The
Lambda Pro Control and SMART modules, well-known from the
Vitodens 300-W, plus the variable speed high efficiency DC pump,
ensure permanently high efficiency, reliable operation and low power
consumption.
The integral stainless steel 100 l litre primary store offers the same
DHW convenience as a separate DHW cylinder approximately twice
the size.
Recommended applications
■ Installations in detached and terraced houses
■ New build (e.g. pre-fabricated houses and housing association
projects): installation in utility rooms and attics
■ Modernisation: replacement of system boilers, floorstanding atmos-
pheric gas boilers and oil/gas boilers with DHW cylinders below.
Benefits at a glance
■ Gas condensing storage combi boiler with integral stainless steel
primary store, 3.8 to 26.0 kW
■ Standard seasonal efficiency [to DIN]: up to 98 % (Hs)/109 % (Hi)
■ Durable and efficient through the Inox-Radial heat exchanger
■ MatriX gas burner with long service life thanks to stainless steel
MatriX mesh – resistant to high temperature loads
■ Stainless steel primary store with 100 l capacity (NL value up to 2.4)
■ Energy saving high efficiency DC pump (in accordance with Energy
Label A)
■ New Vitotronic control unit that is easy to operate with plain text and
graphic display
■ The programming unit part of the control unit can also be fitted on a
wall mounting base (accessory)
■ Lambda Pro Control combustion controller for all gas types – saving
fees by extending the inspection intervals to up to five years [in Ger-
many]
■ Universal connection sets for individual installation flush with the wall
■ DHW expansion vessel and DHW circulation pump can be integra-
ted inside the appliance
■ Assembly kit with the dimensions and design of the appliance
(accessory) for the connection of one regulated and one unregulated
heating circuit
Delivered condition
Gas condensing boiler with Inox-Radial heat exchanger, modulating
MatriX gas burner for natural gas and LPG to DVGW Code of Practice
G260 [Germany], expansion vessel, variable speed high efficiency DC
pump and integral stainless steel DHW primary store. Fully plumbed
and wired.
Colour of the epoxy-coated casing: white.
Packed separately:
Vitotronic 100 for constant temperature mode
or
Vitotronic 200 for weather-compensated operation.
Vitodens 333-F, type FS3B
20 VIESMANN VITODENS
3
5822 431 GB