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 5/2013 Dispose after installation.

2
Please follow these safety instructions closely to prevent accidents and mate-
rial losses.
Safety instructions explained
Danger
This symbol warns against the
risk of injury.
!Please note
This symbol warns against the
risk of material losses and envi-
ronmental pollution.
Note
Details identified by the word "Note" con-
tain additional information.
Target group
These instructions are exclusively inten-
ded for qualified contractors.
■ Work on electrical equipment must
only be carried out by qualified electri-
cians.
Regulations
Observe the following when working on
this system:
■ National installation regulations
■ Statutory regulations regarding the
prevention of accidents
■ Statutory regulations regarding envi-
ronmental protection
■ The Code of Practice of relevant trade
associations
■ All current safety regulations as
defined by DIN, EN, DVGW, VDE and
all locally applicable standards
aÖNORM, EN and ÖVE
cSEV, SUVA, SVTI, SWKI and
SVGW
Working on the system
■ Isolate the system from the power sup-
ply (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 recon-
nection.
Safety instructions
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Preparing for installation
Intended use......................................................................................................... 5
Passive house use............................................................................................... 5
Air distribution/ductwork....................................................................................... 6
■Supply air and extract air ducts......................................................................... 6
■Supply air/extract air valvesSupply air/extract air valves.............................. 9
■Air routing between rooms................................................................................ 9
■Preventing flow noise and pressure drop.......................................................... 10
■ Thermal insulation of the ductwork................................................................... 12
Siting.................................................................................................................... 13
■ Siting requirements........................................................................................... 13
■ Dimensions....................................................................................................... 15
Protecting the mechanical ventilation system...................................................... 17
Installation sequence
Installing the Vitovent........................................................................................... 18
■ Wall mounting................................................................................................... 18
■ Floorstanding installation.................................................................................. 19
Connecting the condensate drain......................................................................... 19
Outdoor air/exhaust air ductwork......................................................................... 22
■ System diagram................................................................................................ 23
■ Exterior wall connection.................................................................................... 25
■ Roof outlet......................................................................................................... 29
■ Outdoor air and exhaust air extension.............................................................. 30
Supply air/extract air ductwork: Plastic................................................................. 31
■ System diagram................................................................................................ 32
■ Restrictors for adjusting the air flow rate........................................................... 34
■ Connecting the air distribution box.................................................................... 34
■ Connecting the diverter..................................................................................... 36
■ Fitting the floor vent.......................................................................................... 38
Supply air/extract air ductwork: Metal.................................................................. 39
■ System diagram................................................................................................ 39
■ Fitting the slotted vent....................................................................................... 42
■ Fitting the floor vent.......................................................................................... 43
Supply air/extract air valves................................................................................. 44
■ Installation versions, supply air/extract air valves............................................. 44
■ Fitting metal supply air/extract air valves.......................................................... 45
■ Fitting plastic supply air/extract air valves......................................................... 46
■ Fitting the kitchen extract air valve.................................................................... 47
Index
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Electrical connections........................................................................................... 48
■ Terminal overview............................................................................................. 49
■ Fitting and connecting the remote control......................................................... 50
■ Connecting air pressure switch and sensors.................................................... 52
■ Connecting an external electric preheater coil.................................................. 52
■ Power supply.................................................................................................... 52
Commissioning and adjustment........................................................................... 53
Keyword index.................................................................................................... 54
Index (cont.)
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The appliance is only intended to be
installed and operated in ventilation sys-
tems 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 liv-
ing spaces.
Intended use presupposes that a fixed
installation in conjunction with permissi-
ble, system-specific components has
been carried out.
Commercial or industrial usage for a pur-
pose other than mechanical ventilation
of living spaces shall be deemed inap-
propriate.
Any usage beyond this must be
approved by the manufacturer for the
individual case.
Incorrect usage or operation of the appli-
ance (e.g. the appliance being opened
by the system user) is prohibited and
results in an exclusion of liability. Incor-
rect 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 oper-
ate the appliance safely.
Passive house use
Vitovent 300-W meets the requirements
for passive house use.
Intended use
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Supply air and extract air ducts
The air is distributed from the ventilation
unit to the living spaces (supply air) or
from the wet areas to the ventilation unit
(extract air) via air distribution boxes with
flat ducts, connection elements, silenc-
ers, 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 con-
densate accumulating.
■ Contaminants must be kept out of the
ductwork.
Air distribution/ductwork
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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
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
■ Secure components with butt straps,
perforated straps (on site) or mounting
brackets (accessory).
■ Join all components with a lip seal to
make them airtight.
Air distribution/ductwork (cont.)
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Metal ductwork (flat)
K
H
N
C
L
M
F
B
L
M
G
A
DE
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 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 ventilation unit to the wall using
mounting brackets, so that the pipes
cannot be removed without tools.
Air distribution/ductwork (cont.)
5793 589 GB

9
■ If flexible System 150 flat ducts are
routed within the insulation layer below
the screed, e.g. as the supply pipe for
the air distribution box, protect these
with cover panels (on-site provision)
against deformation by concentrated
loads (impact protection).
■ Thermally insulate all ductwork in
unheated areas with vapour diffusion-
proof material.
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 comprehen-
sive 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 ven-
tilated and those from which air is to be
extracted.
■ For this, a gap under doors into the
apartment is sufficient. 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 attenu-
ated overflow vents in the internal
walls or in part of the door.
Air distribution/ductwork (cont.)
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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 ventila-
tion unit and the air distribution box:
5 m
■ Symmetrical layout of the supply air
and extract air lines.
■ Short runs, few bends.
■ Install one silencer (accessory) each
in the supply and extract air ducts
between the air distribution box and
ventilation unit.
■ Only for metal ductworks (flat):
– In areas where greater attenuation
is required, provide additional
silencers between adjacent living
and sleeping accommodation and
toilets.
– To reduce the pressure drop in
ducts, implement central risers 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 con-
crete or screed floors and on solid walls,
since the Vitovent is equipped with
sound-absorbing adjustable feet and
rubber washers to counteract structure-
borne noise transmission.
When a unit is installed on wooden ceil-
ings, we recommend 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 con-
structed with wooden beams.
Note
This also applies when utilising a mount-
ing plinth (accessory).
Air distribution/ductwork (cont.)
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Silencers
Silencer, round, flexible
1100
a
b
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
System Dimensions in mm
a b
100 128 202
150 207 304
Air distribution/ductwork (cont.)
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Silencer, flat, crush-resistant version, system 100
51
360
60
500
128
Thermal insulation of the ductwork
■Thermally insulate the outdoor air
and exhaust air lines to prevent the
formation of condensate; these must
also have an external vapour barrier,
as specified by DIN 1946-6.
■ Heat losses from the ductwork must
be kept to a minimum to ensure opti-
mum heat recovery with the Vitovent.
Thermally insulate all ductwork in
unheated areas in line with
DIN 1946-6 using vapour diffusion-
proof material.
Insulation measures:
■ Insulate in accordance with current
engineering standards.
■ Seal joints with adhesive tape.
■ Avoid gaps.
■ Isolate ceiling and wall outlets with
insulation strips.
■ Suitable insulation material could be,
for example, Armaflex.
Note
No additional thermal insulation is
required for EPP pipes or bends.
Air distribution/ductwork (cont.)
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Siting requirements
■ Preferably install the ventilation unit
inside the airtight and thermally insu-
lated 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 floorstand-
ing or wall mounted.
■ Keep ductwork to the extract air and,
where appropriate, supply air areas
short.
■ Thermally insulate supply air and
extract air ducts that are routed
through unheated areas of the building
with vapour diffusion-proof materials
(not applicable to EPP pipes or
bends).
■ A mains power socket is required for
the power supply.
■ Install the remote control in a central
location, e.g. living room, kitchen or
hallway.
Install a 2-core control cable for con-
necting the remote control to the ven-
tilation unit (0.5 mm2, max. length
50 m).
■ Connect the condensate drain to a
waste water pipe.
■ The ventilation unit must be accessible
for maintenance 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 combustion equipment
(e.g. an open fireplace) and the
Vitovent in a space with combus-
tion air interconnection results in
dangerous negative pressure
inside the room. Negative pres-
sure can result in flue gas re-
entering the room.
In order to prevent health risks,
observe the following:
■Never operate the Vitovent simultane-
ously with open flue combustion
equipment (e.g. open fireplace).
■ Only operate combustion equipment
in balanced flue mode with a separate
combustion air supply. We recom-
mend combustion equipment that has
general building approval as bal-
anced flue combustion equipment of
the Deutsches Institut für Bautechnik
(DIBt) [Germany].
■ Keep doors to boiler rooms where the
combustion air supply is not intercon-
nected with the living space airtight
and shut.
Siting
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Information regarding the operation
of the Vitovent in conjunction with
open flue combustion equipment
■ The installation of an air pressure
switch (accessory) that stops the ven-
tilation unit in the case of negative
pressure inside the room, is compul-
sory.
■ The relevant flue gas inspectorate
must give their approval [check local
regulations].
■ Frost protection for the countercurrent
heat exchanger down to –10 °C is
ensured by means of the integral pre-
heater coil. For operation with even
lower outside temperatures, provide
an additional electrical preheater coil
(accessory) 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 Vitovent in
interconnected rooms results in
negative pressure inside the
room.
Never link extractor hoods or
extracting tumble dryers into the
Vitovent ductwork.
Set up kitchen extractor hoods as recir-
culating extractors, which is more
energy efficient.
Never connect existing extractor
hoods to the extract air duct of the
mechanical ventilation system for the fol-
lowing reasons:
■ Hygiene, contamination:
Grease deposits in the extract air sys-
tem.
■ Noise from the supply air valves:
Extractor hoods operate with a sub-
stantially greater air flow rate
(> 300 m3/h) than the ventilation unit.
The generated negative pressure cre-
ates a "short circuit" inside the system,
as the amount of differential air must
largely be made up by the ventilation
ductwork.
Connect extractor hoods via a coaxial
exhaust air system to enable the relevant
differential air volume to be made up.
In the case of extractor hoods, provide
an interlock system for the extractor
hood in connection with open flue com-
bustion equipment (see chapter "Open
flue combustion equipment and the
Vitovent").
Siting (cont.)
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Dimensions
537
137
388
138
677
280
540
30
344
50
A
B
CD
EE
843
Siting (cont.)
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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 21) to connect the condensate pipe
DN 32 (on site).
1¼ male thread1¼ male thread
Minimum clearances
A
500
0 0
0
AVitovent 300-W
Siting (cont.)
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!Please note
Dust entering the ventilation unit
and the ductwork can result in
faulty operation of the mechani-
cal ventilation system.
Prevent the ingress of dust whilst
building work is in progress by the
following measures:
■ Following the installation, close all
ventilation air and extract air vents, for
example with self-adhesive foil.
■ Only start the ventilation unit after all
other construction work inside the
building has been completed.
Protecting the mechanical ventilation system
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Wall mounting
A
390
142.5
3.
142.5
4.
1.
2.
3x
ARubber washers as anti-vibration
measure
Installing the Vitovent
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Floorstanding installation
1. In order to safeguard that the con-
densate can drain off freely, site the
Vitovent on a mounting plinth (acces-
sory). 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 countercurrent heat exchanger.
!Please note
Condensate must be able to
drain freely.
Route all condensate pipes with
a steady fall. Never use sagging
hoses.
Note
■ If the condensate drain runs through
unheated rooms, protect it from frost in
such areas (e.g. thermal insulation or
supplementary heating facility).
■ Because of the risk of backpressure,
connecting the condensate drain to
downpipes is not permissible.
Installing the Vitovent (cont.)
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Maintenance-free dry siphon (accessory)
A
B
C
D
AVitovent 300-W
BCondensate drain connector
1¼ male thread
CDry siphon
DWaste water pipe DN 40, e.g. HT
pipe (on site) with fall
Connecting the condensate drain (cont.)
5793 589 GB