Viessmann Vitovent 300-W User manual

Installation instructions
for contractors
VIESMANN
Vitovent 300-W
Mechanical ventilation system with heat recovery
for a maximum air flow rate of 300 m3/h and 400 m3/h
VITOVENT 300-W
5793 589 GB 9/2015 Dispose after installation.

2
Please follow these safety instructions closely to
prevent accidents and material losses.
Safety instructions explained
Danger
This symbol warns against the risk of injury.
!Please note
This symbol warns against the risk of material
losses and environmental pollution.
Note
Details identified by the word "Note" contain additional
information.
Target group
These instructions are exclusively intended for author-
ised contractors.
■Work on electrical equipment must only be carried
out by a qualified electrician.
Regulations to be observed
■National installation regulations
■Statutory regulations for the prevention of accidents
■Statutory regulations for the protection of the envi-
ronment
■Codes of practice of the relevant trade associations
■All relevant safety regulations as defined by DIN, EN,
DVGW, VDE and locally applicable standards
aÖNORM, EN and ÖVE
cSEV, SUVA, SVTI, SWKI and SVGW
Working on the system
■Isolate the system from the power supply (e.g. by
removing the separate fuse or by means of a mains
isolator) and check that it is no longer 'live'.
■Safeguard the system against reconnection.
Safety instructions
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1. Information ................................................................................................................ 4
2. Preparing for installation Passive house use ................................................................................. 6
Air distribution/ductwork ......................................................................... 6
■Supply air and extract air ducts .......................................................... 6
■Supply air/extract air valves ................................................................ 8
■Air routing between rooms .................................................................. 8
■Preventing flow noise and pressure drop ........................................... 8
■Thermal insulation of the ductwork ..................................................... 10
Siting ...................................................................................................... 10
■Installation requirements .................................................................... 10
■Dimensions ......................................................................................... 12
Protecting the mechanical ventilation system ........................................ 13
3. Installation sequence Installing the Vitovent ............................................................................. 14
■Wall mounting ..................................................................................... 14
■Floorstanding installation .................................................................... 14
Connecting the condensate drain .......................................................... 14
Outdoor air/exhaust air ductwork ........................................................... 16
■System diagram .................................................................................. 17
■Exterior wall connection ...................................................................... 19
■Roof outlet .......................................................................................... 21
■Outdoor and exhaust air add-on ......................................................... 22
Supply air/extract air ductwork: plastic .................................................. 24
■System diagram .................................................................................. 24
■Restrictors for adjusting the air flow rate ............................................ 25
■Connecting the air distribution box ..................................................... 25
■Connecting the diverter ...................................................................... 27
■Fitting the floor vent ............................................................................ 29
Supply air/extract air ductwork: metal .................................................... 30
■System diagram .................................................................................. 30
■Fitting the slotted vent ........................................................................ 32
■Fitting the floor vent ............................................................................ 33
Supply air/extract air valves ................................................................... 34
■Installation versions, supply air/extract air valves ............................... 34
■Fitting metal supply air/extract air valves ............................................ 35
■Fitting plastic supply air/extract air valves .......................................... 35
■Fitting the kitchen extract air valve ..................................................... 36
Electrical connections ............................................................................ 36
■Fitting and connecting the remote control .......................................... 38
■Connecting air pressure switch and sensors ...................................... 39
■CO2/humidity sensor (accessories) .................................................... 39
■Connecting an external electric preheater coil ................................... 39
■Power supply ...................................................................................... 39
Commissioning and adjustment ............................................................. 40
4. Keyword index ................................................................................................................ 41
Index
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Disposal of packaging
Please dispose of packaging waste in line with statu-
tory regulations.
DE: Use the disposal system organised by
Viessmann.
AT: Use the ARA statutory disposal system (Altstoff
Recycling Austria AG, licence number 5766).
CH: Packaging waste is disposed of by the HVAC
contractor.
Symbols
Symbol Meaning
Reference to other document containing
further information
1.
Step in a diagram:
The numbers correspond to the order in
which the steps are carried out.
Warning of material losses and environ-
mental pollution
Live electrical area
Pay particular attention.
■Component must audibly click into place.
or
■Acoustic signal
■Fit new component.
or
■In conjunction with a tool: Clean the sur-
face.
Dispose of component correctly.
Dispose of component at a suitable collec-
tion point. Do not dispose of component in
domestic waste.
Intended use
The appliance is only intended to be installed and
operated in ventilation systems that comply with
EN 1946-6, with due attention paid to the associated
installation, service and operating instructions. It is
only designed for the controlled mechanical ventilation
of living spaces.
Intended use presupposes that a fixed installation in
conjunction with permissible, system-specific compo-
nents has been carried out.
Commercial or industrial usage for a purpose other
than mechanical ventilation of living spaces shall be
deemed inappropriate.
Information
5793 589 GB

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Any usage beyond this must be approved by the man-
ufacturer for the individual case.
Incorrect usage or operation of the appliance (e.g. the
appliance being opened by the system user) is prohibi-
ted and results in an exclusion of liability. Incorrect
usage also occurs if the components in the ventilation
system are modified from their intended function.
Note
The appliance is intended exclusively for domestic
use, i.e. even users who have not had any instruction
are able to operate the appliance safely.
Information (cont.)
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Vitovent 300-W meets the requirements for passive
house use.
Air distribution/ductwork
Supply air and extract air ducts
The air is distributed from the ventilation unit to the liv-
ing spaces (supply air) or from the wet areas to the
ventilation unit (extract air) via air distribution boxes
with flat ducts, connection elements, silencers, supply
air and extract air vents.
■Position the air distribution boxes near the ventilation
unit.
■Route the supply air and extract air ducts from the
relevant air distribution boxes to the individual
rooms.
Installation information
■In order to avoid complicated duct runs, install the
ventilation ductwork prior to installing the central
heating, water and waste water services.
■Ducts must not sag, to prevent condensate accumu-
lating.
■Contaminants must be kept out of the ductwork.
Example of duct routing in the case of suspended ceilings
Plastic ductwork (flat)
H
K
C
F
M
A
DE
BL
P
LM
G
R
R
N
Fig. 1
ABedroom
BLiving room
CKitchen
DWC
EBathroom
FExtract air
GSupply air
HOutdoor air
KExhaust air
LAir distribution box
MFlat duct
NVitovent 300-W
PEPP pipe
RDiverter
Passive house use
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■Secure components with butt straps, perforated
straps (on site) or mounting brackets (accessory).
■Join all components with a lip seal to make them air-
tight.
Metal ductwork (flat)
K
H
N
C
L
M
F
B
L
M
G
A
DE
Fig. 2
ABedroom
BLiving room
CKitchen
DWC
EBathroom
FExtract air
GSupply air
HOutdoor air
KExhaust air
LAir distribution box
MFlat duct
NVitovent 300-W
■Secure components with plastic-coated perforated
straps (on site) and seal joints with shrink tape.
■Join all components with connection pieces or
female connections.
■Use reducers in accordance with the required flow
rate and the building characteristics.
■Secure EPP pipes on the connectors of the ventila-
tion unit to the wall using mounting brackets so that
the pipes cannot be removed without tools.
■If flexible system 150 flat ducts are routed within the
insulation layer below the screed (e.g. as the supply
duct for the air distribution box), protect these with
on-site cover panels against deformation by concen-
trated loads (impact protection).
■Thermally insulate all ductwork in unheated areas
with vapour diffusion-proof material.
Air distribution/ductwork (cont.)
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Supply air/extract air valves
■Arrange the supply air and extract air valves in the
room geometry so that the air is routed as directly as
possible between rooms that are ventilated and
those from which air is extracted. At the same time,
ensure as broad a flow pattern as possible through
the entire room.
■Max. distance to the ceiling in the case of wall
mounting: 300 mm
Air routing between rooms
■Create an interconnected room air supply between
the rooms to be ventilated and those from which air
is to be extracted.
■For this, a gap under doors into the apartment is suf-
ficient. The correlation between gap height and air
flow rate is shown in DIN 1946-6 (see technical
guide).
■Where internal doors are tightly sealed, provide on-
site noise attenuated overflow vents in the internal
walls or in part of the door.
Preventing flow noise and pressure drop
■Install air distribution boxes close to the ventilation
unit.
Maximum length of supply air and extract air ducts
between the ventilation unit and the air distribution
box: 5 m
■Symmetrical layout of the supply air and extract air
ducts
■Short runs, few bends
■In areas where greater attenuation is required, install
one silencer (accessories) each in the supply and
extract air ducts between the air distribution box and
ventilation unit.
■Only for plastic modular ductwork (flat/round):
–In areas where greater attenuation is required, pro-
vide additional silencers between adjacent living
and sleeping accommodation and toilets.
–To reduce the pressure drop in ducts, fit central ris-
ers/downpipes with EPP pipe DN 160 or DN 180
where appropriate.
Measures against structure-borne noise
No additional measures are required if the ventilation
unit is mounted on concrete or screed floors and on
solid walls, since the Vitovent is equipped with sound-
absorbing adjustable feet and rubber washers to coun-
teract structure-borne noise transmission.
When a unit is installed on wooden ceilings, we recom-
mend additional isolation against vibration by means of
a concrete plate or anti-vibration mounts.
Never position the ventilation unit in the centre of a
ceiling if the ceiling is constructed with wooden beams.
Note
This also applies when utilising a mounting plinth
(accessories).
Air distribution/ductwork (cont.)
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Silencers
Silencer, round, flexible
1100
a
b
Fig. 3
Connection Dimensions in mm
a b
DN 125 125 224
DN 160 160 200
DN 180 180 224
Silencer, flat, flexible, system 100/150
110
51
a
500
b
Fig. 4
System Dimensions in mm
a b
100 128 202
150 207 304
Silencer, flat, crush-resistant version, system 100
51
360
60
500
128
Fig. 5
Air distribution/ductwork (cont.)
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Thermal insulation of the ductwork
■Thermally insulate the outdoor air and exhaust air
ducts to prevent the formation of condensate, as
specified by DIN 1946-6; these must also have an
external vapour barrier.
■Heat losses from the ductwork must be kept to a
minimum to ensure optimum heat recovery.
Thermally insulate all ductwork in unheated areas in
line with DIN 1946-6.
Insulation measures:
■Insulate in accordance with current engineering
standards.
■Seal joints.
■Avoid gaps.
■Isolate ceiling and wall ducts with insulation strips.
■Suitable insulation material could be, for example,
Armaflex.
Note
No additional thermal insulation is required for EPP
pipes or bends.
Siting
Installation requirements
■Preferably install the ventilation unit inside the air-
tight and thermally insulated building envelope.
!Please note
The installation room must be dry and free
from the risk of frost.
Ensure ambient temperatures between 2 and
35 °C.
■The Vitovent 300-W can be floorstanding or wall
mounted.
■Keep ductwork to the extract air and, where appro-
priate, supply air areas short.
■Thermally insulate supply air and extract air ducts
that are routed through unheated areas of the build-
ing with vapour diffusion-proof materials (not applica-
ble to EPP pipes or bends).
■A mains power socket is required for the power sup-
ply.
■Install the remote control in a central location, e.g.
living room, kitchen or hallway.
Install a 2-core control cable for connecting the
remote control to the ventilation unit (0.5 mm2, max.
length 50 m).
■Connect the condensate drain to a waste water pipe.
■The ventilation unit must be accessible for mainte-
nance purposes.
Possible installation sites:
■Separate plant room, storage area or utility room on
the ground floor
■Cellar
■Thermally insulated long pane attic room
Open flue combustion equipment and Vitovent
Danger
The simultaneous operation of open flue com-
bustion equipment (e.g. an open fireplace) and
the Vitovent in a space with combustion air inter-
connection results in dangerous negative pres-
sure in the interior. Negative pressure can result
in flue gas re-entering the room.
In order to prevent health risks, observe the fol-
lowing:
■Never operate the Vitovent simultaneously with
open flue combustion equipment (e.g. open fire-
place).
■Only operate combustion equipment in room sealed
mode with a separate combustion air supply. We rec-
ommend combustion equipment that has general
building approval as room sealed combustion equip-
ment of the Deutsches Institut für Bautechnik (DIBt)
[Germany].
■Keep doors to boiler rooms that are not part of the
combustion air interconnection with the living space
airtight and shut.
Air distribution/ductwork (cont.)
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Information regarding the operation of the Vitovent
in conjunction with open flue combustion equip-
ment
■On-site safety equipment must be installed that will
switch off the ventilation unit when there is negative
pressure inside the room.
■The relevant flue gas inspector must give his/her
approval [check local regulations].
■Frost protection for the countercurrent heat
exchanger is ensured by means of the integral pre-
heater coil. For operation with even lower outside
temperatures, provide an additional external electric
preheater coil (accessories) or a geothermal heat
exchanger (on site) in the outdoor air duct.
Extractor hoods, extracting tumble dryers and the
Vitovent
!Please note
The simultaneous operation of extractor hoods
or extracting tumble dryers and the ventilation
unit in interconnected rooms results in negative
pressure inside the room.
Never link extractor hoods or extracting tumble
dryers into the ventilation unit ductwork.
Set up kitchen extractor hoods as recirculating
extractors, which is more energy efficient.
Never connect existing extractor hoods to the extract
air duct of the mechanical ventilation system for the
following reasons:
■Hygiene, contamination:
grease deposits in the extract air system
■Noise from the supply air valves:
Extractor hoods operate with a substantially greater
air flow rate (> 300 m3/h) than the ventilation unit.
The generated negative pressure creates a "short
circuit" inside the system, as the amount of differen-
tial air must be made up by the ventilation ductwork.
Connect extractor hoods via a coaxial exhaust air sys-
tem to enable the differential air volume to be replen-
ished.
Provide an interlock for the extractor when using an
extractor hood in conjunction with open flue combus-
tion equipment: See chapter "Open flue combustion
equipment and Vitovent"
Siting (cont.)
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Dimensions
537
137
388
138
677
280
540
30
344
50
A
B
CD
EE
843
Fig. 6
Ventilation unit with a maximum air flow rate of 300 m3/h 400 m3/h
ASupply air DN 160 DN 180
BExtract air DN 160 DN 180
COutdoor air DN 160 DN 180
DExhaust air DN 160 DN 180
ECondensate drain connector
Note
Fit the connection piece supplied (see page 16) to connect the
condensate pipe DN 32 (on site).
Male 1¼Male 1¼
Siting (cont.)
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Minimum clearances
A
500
0 0
0
Fig. 7
AVitovent 300-W
Protecting the mechanical ventilation system
!Please note
Dust entering the ventilation unit and the duct-
work can result in faulty operation of the
mechanical ventilation system.
Prevent the ingress of dust whilst building work
is in progress by the following measures:
■Following the installation, close all supply air and
extract air vents, for example with self-adhesive foil.
■Only start the ventilation unit after all other construc-
tion work inside the building has been completed.
Siting (cont.)
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Wall mounting
A
390
142.5
3.
142.5
4.
1.
2.
3x
Fig. 8
ARubber washers as anti-vibration measure
Floorstanding installation
1. In order to safeguard that the condensate can drain
off freely, site the Vitovent on a mounting plinth
(accessories). Vibrations are isolated by means of
adjustable anti-vibration feet.
2. Level the Vitovent horizontally.
Connecting the condensate drain
Heat recovery generates condensate in the counter-
current heat exchanger. !Please note Condensate must be able to drain freely.
Route all condensate pipes with a steady fall.
Never use sagging hoses.
Installing the Vitovent
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Note
■Should the condensate drain run through unheated
rooms, protect it from frost in such areas (e.g. ther-
mal insulation or ribbon heater).
■Because of the risk of backpressure, connecting the
condensate drain to downpipes is not permissible.
Maintenance-free waterless trap (accessories)
A
B
C
D
Fig. 9
AVitovent 300-W
BCondensate drain connector 1¼ male thread
CWaterless trap
DWaste water pipe DN 40, e.g. HT pipe (on site)
with fall
Connecting the condensate drain (cont.)
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Trap with stench trap (on site)
60
A
B
C
D
Fig. 10
AVitovent 300-W
BCondensate drain connector 1¼ male thread
CConnection piece outside diameter 32 mm (sup-
plied)
DTrap with stench trap (on site)
Note
Secure pipe connections with PVC adhesive.
Outdoor air/exhaust air ductwork
Push EPP pipes onto the respective Vitovent connec-
tors (possibly fit check valves on site).
Connecting the condensate drain (cont.)
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System diagram
1
8
9
3
6
3
7
4
4
4
5
3
2
3
Fig. 11
Outdoor air/exhaust air ductwork (cont.)
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Outdoor air/exhaust air ductwork
Pos. Component System/DN
1Vitovent 300-W 300 m3/h: DN 160
400 m3/h: DN 180
2Exterior wall outlet
■With weather grille and insulating sleeve
or
■With bird guard
or
■Outdoor and exhaust air add-on
Note
Can also be used as exhaust air vent.
DN 160
DN 180
3Pipe with female connection (EPP)
or
Flexible pipe
DN 160
DN 180
4Female connection (EPP) DN 160
DN 180
5Mounting bracket DN 160
DN 180
690° bend with female connection (EPP), can be split into 2 x
45° bends
DN 160
DN 180
7Electric preheater coil DN 160
DN 180
8Roof outlet
■Made from stainless steel with a removable cowl
or
■Made from painted sheet steel
Note
Can also be used as outdoor air vent.
DN 160
DN 180
9Silencer, round, flexible DN 160
DN 180
Further components (not shown)
Outdoor air filter box (with F7 filter) DN 160
Reducer DN 180/DN 160
Outdoor air/exhaust air ductwork (cont.)
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Exterior wall connection
Exterior wall duct with weather grille
A
2.
3.
4.
300
1.
Fig. 12
AEPP pipe sleeve
Outdoor air/exhaust air ductwork (cont.)
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A
8.
5.
6.
B
2x
7.
Fig. 13
AEPP pipe sleeve
BMounting ring, sealing level
Note on step 5:
Seal mounting ring sealing level B with suitable adhe-
sive tape towards the sealing level.
Note
Thermally insulate the outdoor air duct from the exte-
rior wall connection to the Vitovent in vapour diffusion-
proof material.
Exterior wall duct with bird guard
A
a
1.
2.
Fig. 14
AEPP pipe
EPP pipe Dimension a in mm
DN 125 155
DN 190 190
DN 180 210
Outdoor air/exhaust air ductwork (cont.)
5793 589 GB