Viessmann VITOVENT 300 Quick start guide

VIESMANN VITOVENT 300
Domestic ventilation system
Domestic ventilation system with heat recovery, for ventilating
domestic homes subject to demand using purified and pre-
heated outside air.
5724 798 GB 5/2010
Technical guide

Index
1. Principles 1. 1 Heat demand .............................................................................................................. 5
1. 2 Controlled domestic ventilation ................................................................................... 5
2. Product information 2. 1 Product description ..................................................................................................... 6
■Benefits ................................................................................................................... 7
■Delivered condition ................................................................................................. 7
2. 2 Specification ............................................................................................................... 8
■Specification ............................................................................................................ 8
■ Dimensions ............................................................................................................. 10
■ Fan curves .............................................................................................................. 11
3. Installation accessories for out-
side air/expelled air
3. 1 Outside air .................................................................................................................. 12
■ External wall connection ......................................................................................... 12
■ Pre/reheater bank ................................................................................................... 13
■ Outside air filter box ................................................................................................ 14
■ Summer cassette .................................................................................................... 14
3. 2 Expelled air ................................................................................................................. 15
■ External wall connection ......................................................................................... 15
■ Expelled air roof outlet ............................................................................................ 15
4. Installation accessories for venti-
lation air/extract air, metal duct
system
4. 1 Ventilation air apertures .............................................................................................. 15
■ Ventilation air valve for wall installation, DN 100 .................................................... 15
■ Ventilation valves for ceiling installation .................................................................. 16
■ Slotted outlet with connecting chamber, system 100 .............................................. 16
■ Floor outlet, system 100 .......................................................................................... 17
4. 2 Extract air apertures ................................................................................................... 17
■ Extract air valves ..................................................................................................... 17
■ Extract air filter ........................................................................................................ 18
■ Kitchen extract air valve .......................................................................................... 18
4. 3 Air distribution boxes .................................................................................................. 19
■ Part no. 9542 586 ................................................................................................... 19
■ Part no. 9562 050 ................................................................................................... 19
■ Pressure drop, air distribution box .......................................................................... 20
4. 4 Flat duct ...................................................................................................................... 20
■ Flexible flat duct, system 100 and 150 .................................................................... 20
■ Rigid flat duct, system 150 ...................................................................................... 21
■ Connection piece .................................................................................................... 21
■ Flat duct pressure drop ........................................................................................... 21
■ Flow velocity, flat duct ............................................................................................. 22
4. 5 Flat duct: Tees, bends, reducer .................................................................................. 22
■ Tee, broad side ....................................................................................................... 22
■ Tee, narrow side ..................................................................................................... 22
■ Bend 90° broad side, 2 sections ............................................................................. 22
■ Bend 90° broad side, 3 sections ............................................................................. 23
■ Bend 90° narrow side, 3 sections ........................................................................... 23
■ Reducer .................................................................................................................. 23
4. 6 Adaptors — round to flat ............................................................................................. 24
■ Adaptor — round to flat ........................................................................................... 24
■ Diverter — round to flat ........................................................................................... 24
■ Branch (tee) — round to flat .................................................................................... 24
4. 7 Silencers ..................................................................................................................... 25
■ Silencer, round, flexible ........................................................................................... 25
■ Attenuation characteristics of silencers, round ....................................................... 25
■ Silencer, flat, flexible ............................................................................................... 25
■ Silencer, flat, crush-resistant version, system 100 .................................................. 26
■ Attenuation characteristics of silencers, flat ............................................................ 26
4. 8 Pipes ........................................................................................................................... 27
■ Flexible pipe with thermal insulation ....................................................................... 27
■ Flexible pipe with thermal insulation ....................................................................... 27
■ Connection piece .................................................................................................... 27
■ Folded spiral-seam tube ......................................................................................... 27
■ Pressure drop, pipes ............................................................................................... 28
■ Flow velocity ........................................................................................................... 29
Index
2VIESMANN VITOVENT 300
5724 798 GB

4. 9 Pipes: Tee, bends, reducers ....................................................................................... 29
■ Tee .......................................................................................................................... 29
■ Tee with reducer ..................................................................................................... 29
■ Bend 90° ................................................................................................................. 30
■ Bend 45° ................................................................................................................. 30
■ Reducer 160/125 .................................................................................................... 30
■ Reducer 125/100 .................................................................................................... 30
■ Reducer 180/160 .................................................................................................... 30
5. Installation accessories for venti-
lation air/extract air, plastic duct
system
5. 1 Ventilation air apertures .............................................................................................. 31
■ Ventilation air valve DN 125 with diverter for wall and ceiling installation ............... 31
■ Floor outlet with grate ............................................................................................. 31
5. 2 Extract air apertures ................................................................................................... 32
■ Extract air valve DN 125 with diverter ..................................................................... 32
5. 3 Air distribution boxes .................................................................................................. 32
■ Restrictor ................................................................................................................. 33
5. 4 Flat duct, system 100 .................................................................................................. 34
■ Flat duct .................................................................................................................. 34
■ Connection piece .................................................................................................... 34
5. 5 Flat duct: Bends .......................................................................................................... 34
■ Bend 90°, broad side .............................................................................................. 34
■ Bend 90°, narrow side ............................................................................................. 34
5. 6 Lip seal ....................................................................................................................... 35
■ Part no: 7440 213 ................................................................................................... 35
5. 7 Locking cap ................................................................................................................. 35
■ Part no: 7440 217 ................................................................................................... 35
6. Design information 6. 1 Positioning .................................................................................................................. 35
■ Application .............................................................................................................. 35
■ Fire protection ......................................................................................................... 35
■ Airtight building ....................................................................................................... 35
■ Installation room requirements ................................................................................ 35
■ Installation options .................................................................................................. 36
■ Open flue combustion equipment and ventilation equipment ................................. 38
■ Extractor hoods, tumble dryers and Vitovent .......................................................... 38
6. 2 Electrical connection ................................................................................................... 38
6. 3 Condensate drain ....................................................................................................... 38
6. 4 Operating mode .......................................................................................................... 39
■ Air flow rate ............................................................................................................. 39
■ Operation with heat recovery .................................................................................. 40
■ Operation without heat recovery (e.g. in summer) .................................................. 41
■ Ice guard ................................................................................................................. 41
6. 5 Duct system ................................................................................................................ 43
■ Example of routing ducts behind suspended ceilings ............................................. 43
■ Outside air supply and expelled air aperture .......................................................... 43
■ Ventilation air and extract air duct ........................................................................... 44
■ Flat duct system ...................................................................................................... 45
■ Sound insulation and silencer ................................................................................. 46
■ Thermal insulation for the duct system ................................................................... 46
7. Sizing 7. 1 Overview of engineering procedure ............................................................................ 46
7. 2 Separating the rooms into those to be ventilated and those from which air should be
extracted ..................................................................................................................... 47
■Example: Detached house, total available area 138.9 m2 ...................................... 48
7. 3 Calculating the air flow rates ....................................................................................... 49
■ Calculating air flow rates for the example on page 48 ............................................ 49
7. 4 Selecting the Vitovent ................................................................................................. 50
7. 5 Determining the number of ventilation and extract air apertures per room ................. 50
7. 6 Determining the installation location of the Vitovent and the duct system .................. 51
■ Installation location of the Vitovent and the duct system for example on
page 48 ................................................................................................................... 51
7. 7 Identifying part sections, ventilation and extract air apertures .................................... 52
■ Identifying part sections, ventilation and extract air apertures for example on page
48 ........................................................................................................................... 53
7. 8 Calculating the external pressure drop ....................................................................... 54
■ Calculation of the external pressure drop for a metal duct system for example on
page 48 ................................................................................................................... 54
7. 9 Calculating the external pressure drop for a plastic duct system ............................... 55
7.10 Overview of components ............................................................................................ 56
■ System illustration, metal duct system .................................................................... 56
■ System illustration, plastic duct system .................................................................. 59
Index (cont.)
VITOVENT 300 VIESMANN 3
5724 798 GB

8. Control unit / Remote control 8. 1 Construction and function ........................................................................................... 60
■ Time switch ............................................................................................................. 60
■ Operating programs ................................................................................................ 60
■ Bypass .................................................................................................................... 61
8. 2 Specification, remote control ...................................................................................... 61
9. Appendix 9. 1 Form for designing air flow rate patterns for the Vitovent 300 .................................... 62
9. 2 Form for designing the Vitovent 300 sections ............................................................. 63
9. 3 Form for determining the total pressure drop ............................................................. 64
9. 4 Checklist for a quotation request for the Vitovent 300 ................................................ 65
9. 5 Symbols ...................................................................................................................... 71
9. 6 Regulations and Directives ......................................................................................... 71
9. 7 Glossary ...................................................................................................................... 71
10. Keyword index .............................................................................................................................................. 72
Index (cont.)
4VIESMANN VITOVENT 300
5724 798 GB

1.1 Heat demand
160
50
15 15
50
80
15
40
50
15
35
35
15
25
10
5
40
80
120
160
200
240
Heat demand in kWh/(m² x a)
210 130 90 70 40
Heat recovery proportion
Ventilation heat demand
(losses through air changes)
Transmission heat demand
(losses through the building envelope)
Heat demand for DHW heating
A B C D E
Development of heat demand subject to building standard (detached house, 3 to 4 occupants, 150 m2 living space, A/V = 0.84)
AExisting buildings
BBuildings from 1984
CBuildings from 1995
DLow energy house (LEH)
EPassive house
In recent years, the building sector has made significant progress in
the area of energy savings. For example, the annual heat demand for
an existing detached house is approx. 200 kWh/(m2 × p.a.). For a
comparable new house, built in accordance with the Energy Saving
Ordinance (EnEV) [Germany], this demand drops to approx.
70 kWh/(m2 × p.a.).
The heat demand of domestic accommodation is essentially the result
of the transmission and ventilation heat demand. The significant reduc-
tion of the heat demand is achieved by rigorous thermal insulation and
therefore a noticeably reduced transmission heat demand.
The lower the transmission heat demand the higher the ventilation heat
demand as a percentage of the total heat demand of the building.
Assuming that, in an existing house, the ventilation heat demand rep-
resents approx. 25 % of the total heat demand, then that proportion
rises for a building constructed in accordance with the WSchV 1995
[Germany] to around 50 % of total demand.
It is therefore logical that comprehensive thermal insulation starts with
a reduction of the ventilation heat demand. This requires a particularly
airtight method of construction. However, this will reduce the level of
air changes that is essential for comfort and health as well as for the
prevention of building damage.
1.2 Controlled domestic ventilation
To keep the ventilation heat demand as low as possible, whilst afford-
ing optimum air changes, it would seem sensible to employ mechanical
systems for room ventilation. These systems are designed to support
occupants in their endeavour to ventilate in an energy efficient manner.
Advanced ventilation systems avoid the need for windows to be
opened and prevent uncontrolled heat losses, especially during the
heating season.
Principles
VITOVENT 300 VIESMANN 5
5724 798 GB

2.1 Product description
AExpelled air
BSolar collector
COutside air
DVitovent 300
EBedroom
FBathroom/WC
GKitchen
HLiving room
KSolar-Divicon
LHeat pump with integral DHW cylinder, e.g. Vitocal 343-G
MCellar
Fresh outside air is induced through a weather grille and an outside
air duct. Upon entry into the ventilation system, this air is initially fil-
tered, cleaned and then preheated by a countercurrent heat
exchanger. Then the preheated outside air is channelled through a
duct system to the rooms to be ventilated.
The extract air is withdrawn through a duct system from the areas
where steam and odours are created (kitchen, bathroom, WC) and
channelled to the ventilation equipment. Here, to protect the heat
exchanger, the extract air is purified. Afterwards, the extract air pre-
heats the cooler outside air in the countercurrent heat exchanger and
is discharged from the building via the expelled air duct.
The constant flow rate control ensures a defined, constant flow rate on
the ventilation and extract air side, independent of static air distribution
pressure.
Subject to demand, various operating programs can be selected man-
ually or programmed at the remote control.
The ventilation equipment must be switched on permanently to enable
all unwanted humidity to be removed from low energy houses.
Shutting down the system creates a risk of condensation inside the
ventilation equipment and on the building substance (moisture dam-
age).
Only for Vitovent 300 for max. air flow rate 300 m3/h or 400 m3/h
The integral bypass damper automatically switches between the oper-
ating modes with or without heat recovery. This changeover is made
subject to temperature (for further details, see page 61).
The automatic function of the bypass damper can be switched ON or
OFF by remote control.
Product information
6VIESMANN VITOVENT 300
5724 798 GB

Benefits
AExtract air
BOutside air
CFilter mat – outside air (bypass mode, only for Vitovent 300 for
max. air flow rate 300 m3/h or 400 m3/h)
DExpelled air
EVentilation air
FRadial DC fan – ventilation air
GCountercurrent heat exchanger
HFilter mat – extract air
KRadial DC fan – expelled air
LFilter mat – outside air
■ Ensures comfortable and healthy ambient conditions.
■ Saves heating energy.
■ Convenient operation of the Vitovent 300 via remote control.
■ Heat recovery in excess of 90 % reduces the ventilation heat
demand to a minimum and thus lowers heating costs.
■ Economical DC motors with a constant flow rate and balance control
maintain a constant air flow, independent of the static pressure.
■ Filtering the outside air — important for those suffering from aller-
gies.
■ Reduced odour nuisance.
■ Balanced humidity management prevents building damage.
■ Closed windows — improved security against burglary and noise
protection.
■Only for Vitovent with max. air flow rate up to 300 m3/h or 400 m3/h:
Integral, temperature controlled bypass circumvents the heat recov-
ery in summer (100 %) and enables ventilation with cool night air.
Delivered condition
Compact ventilation appliance.
■Air flow rate up to 180 m3/h:
Part no. 7373 372
■Air flow rate up to 300 m3/h:
Part no. 7373 373
■Air flow rate up to 400 m3/h:
Part no. 7373 374
■ Casing made from white powder-coated sheet steel, with sound and
thermal insulation.
■ Including remote control with time switch, program selector and filter
change indicator.
■ Countercurrent heat exchanger, made from PETG plastic for heat
recovery.
■ Two DC fans with constant flow rate and balancing control.
■ Four available connectors, without thermal bridges:
–Air flow rate up to 180 m3/h:
DN 125
–Air flow rate up to 300 m3/h:
DN 160
–Air flow rate up to 400 m3/h:
DN 180
■ Quick-change filter frame (incl. 1 set replacement filter mats).
■ Outside air filter F6, extract air filter G4 (to DIN EN 779).
■ Connecting cable with safety plug.
■Only Vitovent 300 for max. air flow rate 300 m3/h or 400 m3/h:
Internal temperature controlled bypass damper.
Product information (cont.)
VITOVENT 300 VIESMANN 7
5724 798 GB

2.2 Specification
Specification
Vitovent 300 for max. air flow rate m3/h 180 300 400
Setting range, air flow rate (variable)
Reduced ventilation m3/h 50 to 170 50 to 290 50 to 390
Nominal ventilation (standard ventilation) m3/h 50 to 175 50 to 295 50 to 395
Maximum ventilation m3/h 50 to 180 50 to 300 50 to 400
Max. air flow rate m3/h 180 300 400
External pressure drop at max. air flow rate Pa 200 100 100
Factory settings
Reduced ventilation
– Air flow rate m3/h 75 100 100
– External pressure drop Pa 20 25 17
Standard ventilation
– Air flow rate m3/h 100 150 200
– External pressure drop Pa 80 66 59
Maximum ventilation
– Air flow rate m3/h 150 225 300
– External pressure drop Pa 140 138 128
Casing
Material
Colour
Sound and thermal insulation
Sheet steel
White
EPP/EPS plastic mouldings
Dimensions excluding connectors
Length (depth) mm 310 436 436
Width mm 560 675 675
Height mm 600 747 747
Weight kg 25 31 32
Radial DC fans
With constant flow rate control, inlet on one side only, with for-
ward curved impeller vanes
Quantity 2
Filter to DIN EN 779
Ventilation air Filter class F6
Extract air Filter class G4
Countercurrent heat exchanger
Heat recovery level % up to 92 up to 91 up to 91
Material PETG plastic
Rated voltage V / Hz 230/50
Max. power consumption W 132 174 300
Power consumption with factory settings
Power consumption Vitovent 300 for max. air flow rate 180 m3/h
Operating mode Reduced ventila-
tion
Standard ventila-
tion
Maximum ventila-
tion
Air flow rate m3/h 75 100 150
External pressure drop Pa 18 to 40 30 to 69 60 to 150
Power consumption for both fans together W 24 to 26 30 to 42 62 to 86
Power consumption Vitovent 300 for max. air flow rate 300 m3/h
Operating mode Reduced ventila-
tion
Standard ventila-
tion
Maximum ventila-
tion
Air flow rate m3/h 100 150 225
External pressure drop Pa 15 to 31 31 to 66 64 to 138
Power consumption for both fans together W 18 to 20 32 to 38 70 to 90
Power consumption Vitovent 300 for max. air flow rate 400 m3/h
Operating mode Reduced ventila-
tion
Standard ventila-
tion
Maximum ventila-
tion
Air flow rate m3/h 100 200 300
External pressure drop Pa 8 to 17 31 to 59 67 to 128
Power consumption for both fans together W 20 to 21 53 to 60 121 to 149
Product information (cont.)
8VIESMANN VITOVENT 300
5724 798 GB

Sound power level
Note
Measurement taken approx. 1.5 m from the ventilation appliance, to
DIN 45635-01-KL1 or DIN 45635-02-KL1.
Different values may result in the installation areas (due to specific
room conditions). Consequently, the measurement to DIN cannot
replace the correct engineering of the overall system.
Sound power level Vitovent 300 for max. air flow rate 180 m3/h
Air flow rate and pressure drop in the air
duct system
Sound power level
[dB(A)]
75 m3/h and 20 Pa 29.0
100 m3/h and 40 Pa 35.5
150 m3/h and 80 Pa 45.0
180 m3/h and 160 Pa 49.0
Sound power level Vitovent 300 for max. air flow rate 300 m3/h
Air flow rate and pressure drop in the air
duct system
Sound power level
[dB(A)]
100 m3/h and 20 Pa < 25.0
150 m3/h and 40 Pa < 33.5
200 m3/h and 40 Pa 40.5
225 m3/h and 80 Pa 44.0
300 m3/h and 80 Pa 48.5
Sound power level Vitovent 300 for max. air flow rate 400 m3/h
Air flow rate and pressure drop in the air
duct system
Sound power level
[dB(A)]
100 m3/h and 20 Pa < 30.5
150 m3/h and 40 Pa 36.0
200 m3/h and 40 Pa 39.5
225 m3/h and 80 Pa 43.5
300 m3/h and 80 Pa 49.5
400 m3/h and 160 Pa 55.0
Sound power level subject to the operating mode
Sound power level Vitovent 300 for max. air flow rate 180 m3/h
Operating
mode
Flow rate
[m3/h]
Pressure
drop air duct
system [Pa]
Sound power level [dB]
at octave centre frequency [Hz] Total
63 125 250 500 1000 2000 4000 8000
Ventilation air
connector
Reduced venti-
lation
75 40 45.8 45.3 43.1 46.8 46.5 37.2 28.7 19.8 49
Standard venti-
lation
100 80 53.1 51.8 49.7 54.3 52.9 45.0 37.9 30.9 56
Maximum ven-
tilation
150 160 60.2 61.4 59.6 62.7 63.5 55.7 48.9 43.4 66
Extract air
connector
Reduced venti-
lation
75 40 43.3 35.9 33.2 31.2 22.6 15.4 8.5 9.0 31
Standard venti-
lation
100 80 50.7 41.5 38.5 37.4 29.1 22.2 15.5 9.2 37
Maximum ven-
tilation
150 160 58.0 51.2 46.4 45.3 39.2 32.5 26.4 12.7 45.5
Sound power level Vitovent 300 for max. air flow rate 300 m3/h
Operating
mode
Flow rate
[m3/h]
Pressure
drop air duct
system [Pa]
Sound power level [dB]
at octave centre frequency [Hz] Total
63 125 250 500 1000 2000 4000 8000
Ventilation air
connector
Reduced venti-
lation
100 20 44.9 39.4 39.0 39.8 39.2 29.3 21.6 15.1 42
Standard venti-
lation
150 40 48.9 48.6 46.6 49.7 49.5 40.3 35.3 27.2 52
Maximum ven-
tilation
225 80 55.0 57.7 56.4 60.1 58.7 52.0 47.5 41.7 62
Extract air
connector
Reduced venti-
lation
100 20 39.3 30.2 20.7 21.0 13.6 4.8 6.1 13.4 < 22
Standard venti-
lation
150 40 45.4 38.3 28.6 29.1 23.8 13.9 10.3 14.2 < 30
Maximum ven-
tilation
225 80 49.3 47.3 39.6 38.5 33.0 25.6 21.9 15.6 39
Product information (cont.)
VITOVENT 300 VIESMANN 9
5724 798 GB

Sound power level Vitovent 300 for max. air flow rate 400 m3/h
Operating
mode
Flow rate
[m3/h]
Pressure
drop air duct
system [Pa]
Sound power level [dB]
at octave centre frequency [Hz] Total
63 125 250 500 1000 2000 4000 8000
Ventilation air
connector
Reduced venti-
lation
100 40 50.0 51.8 48.2 48.6 49.3 40.9 34.2 23.9 51.5
Standard venti-
lation
200 80 59.1 63.6 59.5 58.1 57.5 52.5 48.3 41.1 61.5
Maximum ven-
tilation
300 80 64.3 67.4 65.4 63.8 62.4 59.5 55.2 50.2 67.0
Extract air
connector
Reduced venti-
lation
100 40 39.0 37.0 24.4 26.3 18.1 9.4 8.9 16.0 < 26.5
Standard venti-
lation
200 80 47.7 51.8 36.4 35.3 32.1 25.1 19.2 14.3 38.0
Maximum ven-
tilation
300 80 51.8 55.7 46.1 42.9 38.0 33.6 28.6 21.5 44.5
Note
Higher pressure drop in the air duct system raises the sound power level, since the fan speed is adjusted accordingly.
Dimensions
Dimensions Vitovent 300 for max. air flow rate 180 m3/h
560
310
20
168 125
50
600
77
213
75
79
AVentilation air (DN 125)
BExtract air (DN 125)
COutside air (DN 125)
DExpelled air (DN 125)
ECondensate drain
(hose connection internal Ø 12 mm)
FHeight of the adjustable feet
Product information (cont.)
10 VIESMANN VITOVENT 300
5724 798 GB