Viessmann Vitodens 300 User manual

File in: Vitotec folder, register7
VITODENS 300
Gas fired condensing boiler
4.5 to 66.0kW
as multi−boiler system up to 264kW
Vitodens300
TypeWB3A
Gas fired wall mounted condensing boiler,
with modulating MatriX−compact gas burner,
for open or balanced flue operation
For natural gas and LPG
Datasheet
Part nos. and prices: see price list
5822304 GB5/2004

Product information
2VITODENS 300
VITODENS 300
The combination of top technology:
The modulating MatriXcompact gas
burner and the proven stainless steel
InoxRadial heating surface guarantee a
standard efficiency up to 109%. This
reduces heating costs and protects the
environment.
Like all wall mounted condensing boilers
from Viessmann, Vitodens300 too is
equipped with a stainless steel
InoxRadial heating surface. And it
incorporates all advantages of the heat
transfer principle, of its design and its
high self−cleaning effect.
With its modulation range of 1:4, the
MatriXcompact gas burner saves in
terms of energy consumption and
emissions. Its extremely clean
combustion lets it perform substantially
better than the limits set for the "Blue
Angel".
Vitodens300 is equipped with automatic
flue gas adaptation. This constantly
adapts to changing conditions, for
example weather changes. And that
ensures permanently good combustion.
The MatriX−compact gas burner with its
quite combustion and the modulating,
electronic BUS−controlled pump
operating with reduced flow noise,
ensure a pleasantly quiet operation.
The combi version of Vitodens300 is
equipped with a comfort plate heat
exchanger. This delivers DHW at a
constant outlet temperaturewithout
delay.
Benefits at a glance
HGas fired condensing boiler as wall
mounted model, 4.5 to 66kW.
HStandard efficiency: up to 109%.
HThe stainless steel InoxRadial heating
surface ensures high operational
reliability and a long service life.
HMatriXcompact gas burner,
modulation range 1:4.
HThe emissions fall substantially below
the limits set for the "Blue Angel"
certificate of environmental excellence.
HLow power consumption through
governed AC fan and heating circuit
pump.
HAs a condensing combination boiler:
High DHW convenience as a result of its
integrated DHW Quick−System and
comfort controli.e. instant hot water
at a constant temperature.
HVitotronic control units for room
temperature−dependent or weather−
compensated mode, with integral
diagnostic system and Optolink laptop
interface; capable of communicating
with Vitodata.
With the Vitotronic333 cascade control
unit, rated outputs up to 264kW are
feasible.
HParticularly easy to install, maintain and
service, due to modular design
generous wiring chamber.
HAutomatic flue gas adaptation ensures
permanently high efficiency.
HParticularly quiet operation.
HSpace saving, because clearances at the
boiler sides are no longer required.
HVitodens300 with 4.5 to 12.0kW
automatically regulates to achieve
optimum combustion values. The gas
family or type require no selection.
HFlexible connections to adapt third
party boiler installations enable easy
replacement of alternative makes.
Vitodens300
49 and 66kW
Tested quality
VDE designation approval applied
for.
CE designation in accordance with
current EC Directives.
Clean combustion. Performs significantly
better than the limits set by the "Blue
Angel" certificate of environmental
excellence to RALUZ61.
5822304 GB

Product information
Cut−away illustration
VITODENS 300 3
Modulating MatriX
compact burner
for extremely
clean combustion
InoxRadial heating surfaces
made from stainless steel
for high operational reliability,
long service life and
high output on the
smallest footprint
Integral, variable speed
heating circuit pump
Standby plate
heat exchanger
(for combi boilers)
Gas and water connections
Digital boiler control unit
Vitodens300
12 to 35kW
5822304 GB

Vitodens300
4VITODENS 300
Specification
Gas fired boiler, seriesB and C,
CategoryI2ELL (natural gas version)
CategoryII2ELL3P (LPG version)
Gas fired boiler Gas fired
combination boiler
Rated output range*1
TV/TR=50/30ºC
TV/TR=80/60ºC
kW
kW
4.512.0/16.0*2,*3
411
6.626.0
623.7
8.735.0
832
12.249.0
1144.6
16.666.0
1560.1
6.626.0
623.7
Rated thermal load kW 4.216.7 6.324.7 8.333.3 11.546.3 15.662.2 6.324.7
Product ID CE0085BO 0338
Gas supply pressure
Natural gas
LPG
mbar
mbar
20
50
20
50
20
50
20
50
20
50
Max. permiss. gas supply pressure*4
Natural gas
LPG
mbar
mbar
25.0
57.5
25.0
57.5
25.0
57.5
25.0
57.5
25.0
57.5
Max. power consumption
(incl. circulation pump for 4 to
35kW)
W 120 120 85 85 120
Weight kg 50 52 90 90 55
Capacity heat exchanger litres 5.0 5.6 9.5 9.5 5.0
Heating water volume flow
at 200mbar residual head
l/h 1050 1380 *5 *5 1050
Max. volume flow
(limits for the use of a low loss header)
l/h 1400 1600 3500 3500 1400
Rated circulation water volume
at DT=20K
l/h 1032 1376 1892 2580 1032
Permiss. operating pressure bar 3 3 3 3 3
Connections
Boiler flow and return
Safety valve
G(male thread)
R(female thread)
G(male thread)
¾"
¾"

¾"
¾"

1½"

1"
1½"

1"
¾"
¾"

Dimensions
Length
Width
Height
Height incl. flue pipe bend (accessory)
Height with DHW cylinder installed
below the boiler
mm
mm
mm
mm
mm
380
480
850
1066
1925
380
480
850
1066
1925
550
600
900
1200

550
600
900
1200

380
480
850
1066

Gas connection R(male thread) ½" ½" ¾" ¾" ½"
Standby instantaneous water heater*6
Capacity DHW
Capacity Heating water
litres
litres










1.00
0.70
Hot and cold water connections G(male thread)      ½"
Permissible operating pressure
(DHW side)
Outlet temperature (adjustable)
Continuous DHW output
for DHW temperature rise
from 10 to 45ºC
Drawing rate
bar
ºC
kW
l/h
litres/min

























10
3857
24
590
38
*1Details toEN677.
*2Rated output for DHW heating.
*3Available from October2004. Specification on request.
*4If the gas supply pressure is higher than the maximum permitted value, a separate gas governor must be installed upstream of the
system.
*5Heating circuit pump available as accessory.
*6Minimum pressure of the cold water connection 1bar.
5822304 GB

Vitodens300
VITODENS 300 5
Gas fired boiler Gas fired boiler Gas fired
combination boiler
Rated output range
TV/TR=50/30ºC
TV/TR=80/60ºC
kW
kW
4.512.0/16.0*1
411
6.626.0
623.7
8.735.0
832
12.249.0
1144.6
16.666.0
1560.1
6.626.0
623.7
Connection values
relative to max. output
with gas with HuB
Natural gasE 9.45kWh/m3m3/h
34.01MJ/m3
Natural gasLL 8.13kWh/m3m3/h
29.25MJ/m3
LPG 12.79kWh/m3kg/h
46.04MJ/m3
2.65
3.08
1.94
3.52
4.10
2.59
4.90
5.64
3.62
6.69
7.77
4.94
2.65
3.08
1.94
Flue gas values*2
Flue gas value group to G635/G636 G52/G51 G52/G51 G52/G51 G52/G51 G52/G51
Temperature (at a return
temperature of 30ºC)
 at rated output
 at partial load
Temperature (at a return
temperature of 60ºC)
Mass flow rate
 for natural gas
 at rated output
 at partial load
 for LPG
 at rated output
 at partial load
Available draught
ºC
ºC
ºC
kg/h
kg/h
kg/h
kg/h
Pa
mbar
45
35
70
47.3
11.8
46.4
11.5
100
1.0
45
35
70
63.2
15.7
61.0
15.4
100
1.0
35
33
65
81.2
21.1
78.2
18.0
100
1.0
40
35
70
110.6
27.7
106.7
26.6
100
1.0
45
35
70
47.3
11.8
48.4
11.5
100
1.0
Standard efficiency
at
T
V/TR=40/30ºC
T
V/TR=75/60ºC
%
%
109
104
109
104
109
104
109
104
109
104
Average condensate volume
for natural gas and
T
V/TR=50/30ºC
T
V/TR=80/60ºC
litres/day
litres/day
1113
810
1517
1012
1419
1115
2328
1822
1113
810
Internal diameter of pipe to
expansion vessel
safety valve
DN
DN
20
15
20
15
20
20
20
20
20
15
Condensate connection Hose coupling
∅mm 2024 2024 2024 2024 2024
Flue outlet Internal ∅mm 80 80 100 100 80
Ventilation pipe External ∅mm 125 125 150 150 125
*1Rated output for DHW heating.
*2Calculation values for sizing the flue gas system to EN13384.
Flue gas temperatures measured as gross values at 20ºC combustion air temperature.
The details for partial load refer to an output of 30% of rated output. Calculate the flue gas mass flow rate accordingly when the
partial load differs from that stated above (subject to the burner mode).
The flue gas temperature at a return temperature of 30ºC is decisive for sizing the flue gas system.
The flue gas temperature at a return temperature of 60ºC is used to determine the application range of flue pipes with maximum
permissible operating temperatures.
"For the specification of DHW cylinders and Viessmann system design components, see separate datasheets.
5822304 GB

Vitodens300
110
110
OKFF
+15 − 0
1925 (OKFF recommendation)
380
(length)
850 (height)
876
902
177
240
302
370
480 (width)
240
OKFF
+15 − 0
1925 (OKFF recommendation)
850 (height)
850
861
177
240
302
370
480 (width)
240
137
2062
150
ADG ADG
HV GA HR
SRL/
KW
SVL/
WW
E
SIV
HV GA HR
SRL/
KW
SVL/
WW
E
SIV
KAS
1020
65
ATR
Finished wall
6VITODENS 300
Vitodens300, 12.0 to 35.0kW
Installation on finished walls Installation on unfinished walls
*1Obligatory in conjunction with DHW cylinders installed below the boiler. Otherwise, recommendation only.
Key to symbols
ADG Expansion vessel G¾"
ATR Drain funnel connection
E Drain
GA Gas connection
HR Heating return
HV Heating flow
KAS Boiler adaptor
OKFF Top edge finished floor
SIV Safety valve
Gas fired combination boilers only:
KW Cold water G½"
WW Hot water G½"
Gas fired boilers only:
SRL Cylinder returnG¾"
SVL Cylinder flowG¾"
Note
Prior to the boiler installation, prepare the connections Route the required electrical supply cables
on site. on site and into the boiler at the points indicated (see page17).
5822304 GB

Vitodens300
75
212
50
OKFF
ATR
GA
550 (length)
1925 (OKFF recommendation)
300
HV GA HR
SRLSVL
187
300
413
525
600 (width)
900 (height)
1012
1113
119 7
600
300
approx. 984
44
1030
ADG
KAS
SIV
VITODENS 300 7
Vitodens300 from 49kW
Key to symbols
ADG Expansion vessel (G1")
ATR Drain funnel connection
GA Gas connection
HR Heating return
HV Heating flow
KAS Boiler adaptor
OKFF Top edge finished floor
SIV Safety valve
SRL Cylinder returnG1½"
SVL Cylinder flowG1½"
Multi−boiler systems
For details regarding multi−boiler
systems, see Vitodens Technical Guide
and price list.
Note
Prior to the boiler installation, prepare the connections Route the required electrical supply cables.
on site and into the boiler at the points indicated (see page17).
5822304 GB

Specification  circulation pumps and heads
Residual head in mbar
0
kPa
0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400
Volume flow in litres/h
50
100
150
200
250
300
350
400
450
0
10
20
30
40
K
M
LH
ABC
D
EG
F
8VITODENS 300
Specification  circulation pumps and heads
Vitodens300, 4.5 to 12.0kW on request
Variable speed heating circuit pump
The pump speed and therefore the flow
rate is relayed to the pump, and is set by
the control unit subject to outside
temperature and switching times for the
central heating or reduced mode via an
internal data BUS.
Individually match the minimum and
maximum speed plus the speed during
reduced mode to the existing heating
system using the control unit codes.
In the delivered condition, the minimum
pump capacity (code addressE7) is set to
30%, and the maximum pump capacity
(code addressE6) to 50% for 26kW or to
70% for 35kW.
Using the diagram, the flow rate can be
adjusted to the respective system
conditions.
Matching the flow rate of the circulation
pump to the individual system conditions
reduces the power consumption of the
heating system.
Vitodens300, 6.6 to 35.0kW
Circulation pump VIUPE 60BUS
Rated voltage
Rated current
Power
consumption
V ~
Amax.
Amin.
Wmax.
Wmin.
Was delivered condition
W 26kW
W 35kW
230
0.45
0.21
100
50
65
80
Residual head of the integral circulation pump
Curve Capacity
Circulation pump
Setting
Code address E6
A
B
C
D
E
F
G
H
30%
40%
50%
60%
70%
80%
90%
100%
E6:030
E6:040
E6:050
E6:060
E6:070
E6:080
E6:090
E6:100
Example
HVitodens300, 6.6 to 26.0kW
HDesign temperatures 75/55ºC
HRadiator heating system,
heat demand 20kW
¢Volume flow 860litres/hK
HPressure drop 150mbarL
HDesign pointM
Optimum pump curve according to diagram:
C=code addressE6:050.
5822304 GB

Specification  circulation pumps and heads
0
0 200 400 600 800 1000
Volume flow in litres/h
1200 1400 1600 1800 2000 2200 2400 2600
100
200
300
400
500
600
700
Residual height in mbar
0
kPa
B C D E F G H
K
70
60
50
40
30
20
10 A
VITODENS 300 9
Vitodens300 from 49kW
Circulation pump VIRS7BUS
variable speed, ready to plug in
for installation into the boiler or as
external pump for pipe installation.
Rated voltage
Rated current
Condenser
Power
consumption
V ~
Amax.
Amin.
mF
Wmax.
Wmin.
Was delivered condition
230
0.55
0.37
3.5
126
42
93
Residual head of the circulation pump
Curve Capacity
Circulation pump
Setting
Code addressE6
A
B
C
D
E
F
G
H
K
30%
40%
50%
60%
65%
70%
80%
90%
100%
E6:030
E6:040
E6:050
E6:060
E6:065
E6:070
E6:080
E6:090
E6:100
5822304 GB
130
"

Specification  circulation pumps and heads
0 500 1000 1500
0
100
200
300
400
500
600
700
800
900
1000
Pressure drop on the water side in mbar
0
10
20
30
40
50
60
70
80
90
100
kPa
2000 2500 3000 3500
Flow rate in litres/h
B
A
10 VITODENS 300
Pressure drop (primary circuit)
For the design of an on−site heating circuit pump.
AVitodens300 to 35.0kW
BVitodens300 from 49.0kW
5822304 GB

DHW cylinder
0246
0
1
2
3
4
5
6
Head in m
Capacity in m3/h
VITODENS 300 11
DHW heating with DHW cylinder
Vitodens300 gas fired boiler up to 35.0kW
DHW cylinder, see separate datasheet.
Vitodens300 gas fired boiler from 49.0kW
This boiler may be combined with DHW
cylinders from Viessmann (see
register17), subject to their respective
specification.
Vertical DHW cylinder, available in white
as VitocellV100 to 300litres, as
VitocellV300 (type EVA) to 200litres and
VitocellB100 with 300litres (product
description with supplement W).
All other DHW cylinders are available in
Vitosilver.
Cylinder loading pump
Part no.
Pump type
Voltage
Rated current
Condenser
Power
consumption
Connection
Connecting cable
V ~
A
mF
W
R(fem. thr.)
m
7339468
VIRS30/
61
230
0.63
3.6
110140
1¼"
4.7
Connection diagram for DHW cylinder
Vitodens300 to 35.0kW Vitodens300 from 49.0kW
Including connection set and integral DHW circulation pump With external DHW circulation pump (accessory)
(via three−way valve)
5822304 GB
SVL
SRL
HV
HR SVL
HR
HV
SRL

Installation in unfinished buildings (on finished walls)
12 VITODENS 300
Pre−installation in unfinished buildings for Vitodens300 (up to 35kW) installation directly to the
wallinstallation on finished walls
Required accessories for installations
without DHW cylinder
Installation template
incl. fixing parts, valves and gas stop cock
Rp½" with integral thermal safety
shut−off valve
Additional requirements when
connecting a DHW cylinder
Connection set for DHW cylinders
Note
Ensure a clearance of 700mm in front of
Vitodens or the DHW cylinder for
maintenance purposes.
Maintenance spaces to the l.h. or r.h. side
of Vitodens are not required.
Illustration: Gas fired combination boiler connection
Key to symbols
E Drain
GA Gas connection Rp½"
HR Heating return Rp¾"
HV Heating flow Rp¾"
OKFF Top edge finished floor
Only for gas fired combination boilers
KW Cold water G½"
WW Hot water G½"
Only for gas fired boilers
SRL Cylinder return G¾"
SVL Cylinder flow G¾"
*1Obligatory in conjunction with DHW
cylinders installed below the boiler.
Otherwise, recommendation only.
AInstallation template
BVitodens
CArea for electrical supply cables.
Allow all cables to protrude approx.
1200mm from the wall.
DWall mounted DHW cylinder
(if installed)
5822304 GB
E
HR
SRL/KW
GA
SVL/WW
HV
D
A B C

Installation in unfinished buildings (on unfinished walls)
VITODENS 300 13
Pre−installation in unfinished buildings for Vitodens300 (up to 35kW) installation directly to the
wallinstallation on unfinished walls
Required accessories for installations
without DHW cylinder
Installation template
incl. fixing parts, valves and gas stop cock
R½" with integral thermal safety shut−off
valve
Additional requirements when
connecting a DHW cylinder
Connection set for DHW cylinders
Note
Ensure a clearance of 700mm in front of
Vitodens or the DHW cylinder for
maintenance purposes.
Maintenance spaces to the l.h. or r.h. side
of Vitodens are not required.
Illustration: Gas fired combination boiler connection
Key to symbols
ATR Drain funnel connection R1"
E Drain
GA Gas connection R½"
HR Heating return G¾"
HV Heating flow G¾"
OKFF Top edge finished floor
Only for gas fired combination boilers
KW Cold water G½"
WW Hot water G½"
Only for gas fired boilers
SRL Cylinder return G¾"
SVL Cylinder flow G¾"
*1Obligatory in conjunction with DHW
cylinders installed below the boiler.
Otherwise, recommendation only.
AInstallation template
BVitodens
CArea for electrical supply cables.
Allow all cables to protrude approx.
1200mm from the wall.
5822304 GB
ABC
HR
HV
GA
SRL/KW
E
SVL/WW
ATR

Installation in unfinished buildings (mounting frame)
14 VITODENS 300
Pre−installation of Vitodens300 (up to 35kW) in unfinished buildings with mounting frame
Mounting frame
With diaphragm expansion vessel
(nominal capacity 11litres), valves,
fixings parts and gas angle valve G¾"
incl. thermal safety shut−off valve
Hfor gas fired combination boiler
for installation on finished walls
with solder fittings
with compression fittings
for installation on unfinished walls
Hfor gas fired boiler
for installation on finished walls
with solder fittings
with compression fittings
for installation on unfinished walls
All valves are located under the boiler
cover.
Please note
Ensure a clearance of 700mm in front of
Vitodens300 or the DHW cylinder for
maintenance purposes.
Maintenance spaces to the l.h. or r.h. side
of Vitodens300 are not required.
The mounting frame must not be
plastered over.
Key to symbols
E Drain
GA Gas connection R½"
HR Heating return G¾"
HV Heating flow G¾"
OKFF Top edge finished floor
Gas fired combination boilers only:
KW Cold water G½"
WW Hot water G½"
Gas fired boilers only:
SRL Cylinder return G¾"
SVL Cylinder flow G¾"
*1Compulsory in conjunction with DHW
cylinders installed below the boiler.
Otherwise, recommendation only.
AMounting frame Vitodens300
BBoiler top edge
CArea for electrical supply cables
Allow all cables to protrude approx.
1200mm from the wall.
5822304 GB
E
HR
SRL/KW
GA
SVL/WW
HV
A B
C

Installation in unfinished buildings
VITODENS 300 15
Pre−installation in unfinished buildings for Vitodens300 (from 49kW) installation directly to the wall
An installation template is supplied with
Vitodens300 for the location of fixing
holes for the wall mounting frame and
the location of the flue pipe on the wall.
Make the connection to the heating
circuits on site (maintenance valves and
connection fittings available as
accessories).
Suitable shut−off valves and the gas valve
can be ordered separately (see price list).
Note
Ensure a clearance of 700mm in front of
Vitodens300 for maintenance purposes.
Maintenance spaces to the l.h. or r.h. side
of Vitodens300 are not required.
AReference point Vitoplus300 top edge
BInstallation template Vitodens300
CArea for electrical supply cables
Allow all cables to protrude approx.
1200mm from the wall.
DWall mounting frame
*1Recommendation.
5822304 GB
AD
C
B

Installation in unfinished buildings
16 VITODENS 300
Installation on a wall mounting frame
Self−supporting mounting frame for
Vitodens300 to 35.0kW
for Vitodens and wall mounted DHW
cylinder (80litres capacity).
Suitable for wall mounting, for
self−supporting installation or for
covering with various materials.
Incl. valves and gas angle valve G¾" with
thermal safety shut−off valve.
Hfor gas fired combination boiler
with compression fittings
Hfor gas fired boiler
with compression fittings
ASelf−supporting mounting frame for
Vitodens incl. mounting bracket
BCeiling mounting extension
(Vitodens)
CSelf−supporting mounting frame for
wall mounted DHW cylinders incl.
ceiling fixing extension
DWall mounted DHW cylinder
(80litres capacity)
EVitodens
FMounting bracket for gas fired
combination boiler
GMounting bracket for gas fired boiler
Information regarding Vitodens300
from 49.0kW
Vitodens300 with 49.0 and 66.0kW can
also be fitted to the self−supporting
mounting frame.
The boiler stands 20mm proud on both
sides of the self−supporting mounting
frame.
The mounting bracket cannot be used,
and the DHW cylinders to be hung
alongside the boiler are unsuitable for
Vitodens300 with 49.0 and 66.0kW.
5822304 GB
D
E
C
B
A
FG

Electrical connection
VITODENS 300 17
Electrical connection
Observe the requirements of your local
electricity supply company and VDE (or
local) regulations when making the mains
power connection.
The mains power cable must be
protected by a fuse with a maximum
rating of 16A.
Connect the mains (230V~, 50Hz) via a
permanent connection.
Connect the supply cables and
accessories at the terminals inside the
boiler.
Mains electrical connection of
accessories
The accessory mains supply can be
connected directly to the control unit.
This connection is controlled with the
system ON/OFF switch (max. 4A).
Where the boiler is installed in a wet area,
the mains connection of accessories must
not be carried out at the control unit.
Let cables inside the marked area
(see fig.) protrude 1200mm from the
wall.
Use the following cables:
NYMJ3×1.5mm2for mains power
cables.
NYM with the required number of
conductors for the external connections.
2core cables for
HExternal extensionH1 or H2
HOutside temperature sensor
HVitotronic050 (LON)
HExtension kit for heating circuit with
mixer (KM BUS)
HCentral fault message (in conjunction
with internal extension)
HVitotrol100, typeUTD
HVitotrol200
HVitotrol300.
3core cable for
HVitotrol100, typeUTA
HDHW circulation pump
HMains connection accessories.
Interlock switch
Install an interlock for open flue operation
if an extraction device (e.g. cooker hood)
is fitted in the room providing the boiler
ventilation.
For this, the internal extensionH2
(accessory) can be used. This switches
the extract fans OFF via the adaptor when
the burner is started.
Vitodens300, 6.6 to 35.0kW
AReference point Vitodens top edge
BArea for electrical supply cables
Vitodens300, from 49.0kW
5822304 GB
A
73050
215100
B
265
740
70
90
A
B

Vitodens300 as replacement for third party boilers
18 VITODENS 300
Vitodens300 (6.6 to 35kW) as replacement for third party boilers
Using an adaptor, Vitodens may be
connected to the water connections of
CerastarZR/ZWR and
ThermoblockVC/VCW.
For modernisation, adaptors with primary
and secondary water connections and
fixing parts are offered as accessories for
replacing the following third party boilers
with Vitodens (see price list).
Replacing these devices with Vitodens
will not lead to a higher installation effort
than for the original equipment.
Generally, where a gas fired wall
mounted boiler is replaced by a
Vitodens300 gas fired condensing boiler,
the flue pipe must also be replaced with a
system which is suitable for condensing
operation (see price list for flue gas
systems for Vitodens).
Match up the flue gas connections on site.
Replacing CerastarZR/ZWR
Open flue operation Balanced flue operation
Existing water connections have identical dimensions.
Installation on unfinished walls Installation on finished walls
Gas fired boiler Gas fired boiler
Gas fired combination boiler Gas fired combination boiler
Standard delivery (incl. mounting rail)
5822304 GB
112
11 2 3
850
133 990
dimensions
Cerastar
990
94
112
850
1084
110 2
842
388
Vitodens
115
dimensions
Cerastar
115
115
115
115

Vitodens300 as replacement for third party boilers
Existin
g
water connections have identical dimensions.
119
120
974
45
96
1019
200
855
182
120
1062
46
Thermoblock
dimensions
110
11
08
200
a
b
987
388
Vitodens
c
Thermoblock
dimensions
VITODENS 300 19
Replacing ThermoblockVC/VCW
Open flue operation Balanced flue operation
Dimension Installation on
unfinished walls
Installation on
finished walls
amm
bmm
cmm
1053
908
66
1092
947
105
Installation on unfinished walls Installation on finished walls
Gas fired boiler Gas fired boiler
Gas fired combination boiler Gas fired combination boiler
Standard delivery (incl. mounting rail)
5822304 GB
c
c
c
c

Vitotronic100 for constant temperature operation
20 VITODENS 300
Vitotronic100, typeHC1, for constant temperature operation
Integrated in Vitodens
HElectronic boiler control unit for
operating Vitodens at a constant boiler
water temperature
HA Vitotrol100, typeUTA or UTD is
required for room temperature−
dependent operation (according
toEnEV [Germany])
HIntegrated diagnostic system
HIntegral cylinder thermostat
Structure and functions
Construction
The control unit comprises a basic unit,
electronic modules and a programming
unit.
The control unit contains the following:
System ON/OFF switch, digital display,
control thermostat, temperature limiter,
keys for
HOperating mode
HBoiler water and DHW temperature
HEmissions test function,
burner fault indication, burner fault reset,
integral diagnostic system and fuses.
Control characteristics
PI characteristics with modulating output.
Specification
Rated voltage: 230V~
Rated frequency: 50Hz
Rated current: 6A
Safety class: I
Protection: IPX4D to EN60529,
safeguard through
design/installation
Function: Type1B to EN607301
Permissible
ambient temperature
Hduring operation: 0 to +40ºC
Use in living space
and boiler rooms
(standard ambient
conditions)
Hin storage
and transport: 20 to +65ºC
Electronic control
thermostat
setting: 74ºC (change not
possible)
Electronic temp.
limiter setting
(heating mode): 81ºC (change not
possible)
Temperature
limiter setting: 100ºC (change not
possible)
DHW temperature
setting range
HGas fired
combi boiler: 10 to 57ºC
HGas fired boiler: 10 to 60ºC
Summer mode
Heating programw
The burner starts only when the cylinder
needs reloading or when DHW is drawn
from a combi boiler.
Boiler temperature sensor
The boiler temperature sensor is
connected to the control unit and built
into the boiler.
Permiss. ambient
temperature
Hin operation: 20 to +130ºC
Hin storage
and transport: 20 to +170ºC
Frost protection
The frost protection function is active in
all heating programs.
The burner is switched ON when the
boiler water temperature reaches 5ºC and
will be switched OFF again, when the
boiler water temperature reaches 15ºC.
The circulation pump will be switched ON
simultaneously with the burner and
switched OFF after a delay.
To protect the system from frost, the
circulation pump may be started at
certain intervals (up to 24 times per day)
for periods of approx. 10minutes.
Cylinder temperature sensor
Standard delivery for
HConnection set for wall mounted DHW
cylinders (80litres) (order separately)
HConnection set for DHW cylinders
installed below the boiler
(120 or 150litres) (order separately)
HConnection set for DHW cylinders
installed adjacent to the boiler
(160, 200 or 300litres) or alternative
DHW cylinders (order separately)
HOrder the cylinder temperature sensor
for Vitodens300 from 49kW separately
(see page21).
Cable length approx. 3.75m, wired ready
to plug in
Protection: IP 32
Permiss. ambient
temperature
Hin operation: 20 to +90ºC
Hin storage
and transport: 20 to +70ºC
Programming unit
HDisplay
HDisplay of temperatures and faults
HCoding display
5822304 GB